/* ==================== RESET & BASE ====================*/
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: 'Manrope', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background: #121318;
    color: #e8e9f3;
    line-height: 1.6;
    letter-spacing: 0.3px;
    overflow-x: hidden;
}

html.light {
    background: linear-gradient(165deg, #e8ecf4 0%, #dde3ef 30%, #e4eaf5 60%, #edf1f8 100%) !important;
    color: #1e293b !important;
    --surface: #ffffff;
    --surface-bright: #f8faff;
    --surface-container-lowest: #f1f5fb;
    --surface-container-low: #f5f8fc;
    --surface-container: #ffffff;
    --surface-container-high: #f0f4fa;
    --primary: #0891b2;
    --primary-dim: #0e7490;
    --accent: #7c3aed;
    --ok: #059669;
    --warn: #d97706;
    --error: #dc2626;
}

/* ==================== COLORS & SURFACES ====================*/
:root {
    --primary: #00f5ff;
    --primary-dim: #00d4dd;
    --primary-fixed: #00f5ff;
    --primary-fixed-dim: #00d4dd;
    --primary-container: #00f5ff;
    --on-primary-fixed: #002021;
    --secondary: #ecb1ff;
    --secondary-dim: #d05bff;
    --secondary-fixed: #f9d8ff;
    --secondary-fixed-dim: #d05bff;
    --secondary-container: #d05bff;
    --surface: #121318;
    --surface-bright: #1a1b21;
    --surface-container-lowest: #0f1014;
    --surface-container-low: #1a1b21;
    --surface-container: #1e1f25;
    --surface-container-high: #28292f;
    --surface-container-highest: #34343a;
    --surface-variant: #3a3f47;
    --outline: #8a8c96;
    --outline-variant: #3a494a;
    --background: #0a0b0f;
    --success: #00d084;
    --warning: #ffa500;
    --error: #ff6b6b;
    --info: #00b4ff;
    --spacing-1: 0.25rem;
    --spacing-2: 0.5rem;
    --spacing-3: 0.75rem;
    --spacing-4: 1rem;
    --spacing-6: 1.5rem;
    --spacing-8: 2rem;
    --spacing-10: 2.5rem;
    --spacing-12: 3rem;
    --spacing-16: 4rem;
    --spacing-20: 5rem;
    --spacing-24: 6rem;
}

/* ==================== TYPOGRAPHY ====================*/
@import url('https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@400;500;600;700&family=Manrope:wght@400;500;600;700&family=JetBrains+Mono:wght@400;500;600;700&display=swap');

h1, h2, h3, h4, h5, h6 {
    font-family: 'Space Grotesk', sans-serif;
    font-weight: 700;
    letter-spacing: 0.5px;
}

h1 { font-size: 2.5rem; line-height: 1.2; }
h2 { font-size: 1.75rem; line-height: 1.3; }
h3 { font-size: 1.25rem; line-height: 1.4; }

.monospace, .terminal-code {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.875rem;
    letter-spacing: 0.5px;
}

.subtitle {
    font-size: 0.875rem;
    color: var(--secondary);
    font-weight: 500;
    letter-spacing: 1px;
    text-transform: uppercase;
}

.page-subtitle {
    font-size: 0.75rem;
    color: var(--outline);
    letter-spacing: 0.5px;
    text-transform: uppercase;
}

/* ==================== BUTTONS ====================*/
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-2);
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: 9999px;
    font-family: 'Manrope', sans-serif;
    font-size: 0.875rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-container) 0%, var(--secondary-container) 100%);
    color: var(--on-primary-fixed);
    box-shadow: 0 0 30px rgba(0, 245, 255, 0.3);
}

.btn-primary:hover {
    box-shadow: 0 0 50px rgba(0, 245, 255, 0.5), 0 0 80px rgba(208, 91, 255, 0.3);
    transform: translateY(-2px);
}

.btn-secondary {
    background: rgba(26, 27, 33, 0.8);
    color: var(--primary);
    border: 1px solid rgba(0, 245, 255, 0.2);
    backdrop-filter: blur(12px);
}

.btn-secondary:hover {
    border-color: rgba(0, 245, 255, 0.5);
    background: rgba(30, 31, 37, 0.9);
}

.btn-sm { padding: 0.5rem 1rem; font-size: 0.75rem; }

.btn-icon {
    width: 40px;
    height: 40px;
    padding: 0;
    border-radius: 50%;
    background: transparent;
    color: var(--outline);
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
}

.btn-icon:hover {
    color: var(--primary);
    background: rgba(0, 245, 255, 0.1);
}

.btn-text {
    background: transparent;
    color: var(--secondary);
    border: none;
    cursor: pointer;
    font-size: 0.875rem;
    padding: 0.5rem 0;
    text-decoration: underline;
    transition: color 0.3s ease;
}

.btn-text:hover { color: var(--primary); }

/* ==================== FORMS ====================*/
.form-group { margin-bottom: var(--spacing-6); }

.form-label {
    display: block;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--secondary);
    margin-bottom: var(--spacing-2);
    letter-spacing: 0.5px;
    text-transform: uppercase;
}

.input-wrapper {
    position: relative;
    display: flex;
    align-items: center;
    background: var(--surface-container-lowest);
    border-radius: 0.5rem;
    border: 1px solid rgba(0, 245, 255, 0.1);
    transition: border-color 0.3s ease, box-shadow 0.3s ease;
    overflow: hidden;
}

.input-wrapper:focus-within {
    border-color: rgba(0, 245, 255, 0.3);
    box-shadow: inset 0 0 20px rgba(0, 245, 255, 0.1);
}

.input-icon {
    position: absolute;
    left: var(--spacing-3);
    color: var(--primary);
    font-size: 1.25rem;
    pointer-events: none;
}

.form-input {
    flex: 1;
    background: transparent;
    border: none;
    color: var(--primary);
    padding: 0.75rem var(--spacing-3) 0.75rem 2.75rem;
    font-family: 'Manrope', sans-serif;
    font-size: 0.875rem;
    outline: none;
}

.form-input::placeholder { color: rgba(232, 233, 243, 0.4); }

.toggle-password {
    background: transparent;
    border: none;
    color: var(--outline);
    cursor: pointer;
    padding: 0 var(--spacing-3);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: color 0.3s ease;
}

.toggle-password:hover { color: var(--primary); }

.form-checkbox {
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
    margin-bottom: var(--spacing-4);
}

.form-checkbox input {
    width: 18px;
    height: 18px;
    cursor: pointer;
    accent-color: var(--primary);
}

.form-checkbox label {
    cursor: pointer;
    font-size: 0.875rem;
    color: var(--outline);
}

/* ==================== CARDS ====================*/
.card {
    background: var(--surface-container);
    border-radius: 0.75rem;
    padding: var(--spacing-6);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    border: 1px solid rgba(0, 245, 255, 0.05);
}

.card:hover {
    background: var(--surface-container-high);
    border-color: rgba(0, 245, 255, 0.1);
}

.card-lg { grid-column: 1 / -1; }

.card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--spacing-4);
    gap: var(--spacing-4);
}

.card-header h2,
.card-header h3 {
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
    margin: 0;
}

.card-header .material-icons {
    color: var(--primary);
    font-size: 1.5rem;
}

.card-stat {
    font-size: 0.875rem;
    color: var(--primary);
    font-weight: 600;
    margin-bottom: var(--spacing-2);
}

.card-description {
    font-size: 0.875rem;
    color: var(--outline);
    margin-bottom: var(--spacing-4);
    line-height: 1.5;
}

.card-info {
    background: rgba(0, 245, 255, 0.05);
    border: 1px solid rgba(0, 245, 255, 0.15);
}

.info-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
    margin-bottom: var(--spacing-2);
}

.info-header .material-icons { color: var(--primary); }

.info-header p {
    margin: 0;
    font-weight: 600;
    color: var(--primary);
}

.info-message {
    font-size: 0.875rem;
    color: var(--outline);
    margin-bottom: var(--spacing-4);
}

/* ==================== BADGES & STATUS ====================*/
.badge {
    display: inline-flex;
    align-items: center;
    padding: 0.25rem 0.75rem;
    border-radius: 9999px;
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.3px;
    text-transform: uppercase;
}

.badge-success { background: rgba(0, 208, 132, 0.15); color: var(--success); }
.badge-warning { background: rgba(255, 165, 0, 0.15); color: var(--warning); }
.badge-error { background: rgba(255, 107, 107, 0.15); color: var(--error); }
.badge-info { background: rgba(0, 180, 255, 0.15); color: var(--info); }

.status-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--primary);
    display: inline-block;
    margin-right: var(--spacing-2);
    animation: pulse 2s infinite;
}

.status-dot.operational { background: var(--success); }

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

/* ==================== TABLES ====================*/
.table-wrapper {
    overflow-x: auto;
    margin-top: var(--spacing-4);
}

.data-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.875rem;
}

.data-table thead { background: var(--surface-container-lowest); }

.data-table th {
    padding: var(--spacing-3) var(--spacing-4);
    text-align: left;
    font-weight: 600;
    color: var(--secondary);
    letter-spacing: 0.3px;
    text-transform: uppercase;
    border-bottom: 1px solid rgba(0, 245, 255, 0.1);
}

.data-table td {
    padding: var(--spacing-3) var(--spacing-4);
    border-bottom: 1px solid rgba(0, 245, 255, 0.05);
    color: var(--outline);
}

.data-table tr:hover { background: rgba(0, 245, 255, 0.02); }

/* ==================== LOGIN PAGE ====================*/
.login-page {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    background: linear-gradient(135deg, #0a0b0f 0%, #1a1b21 100%);
    position: relative;
    overflow: hidden;
}

.login-container {
    position: relative;
    z-index: 10;
    width: 100%;
    max-width: 420px;
    padding: var(--spacing-6);
}

.login-card {
    background: var(--surface-container);
    border: 1px solid rgba(0, 245, 255, 0.1);
    border-radius: 1rem;
    padding: var(--spacing-8);
    backdrop-filter: blur(20px);
}

.login-header {
    text-align: center;
    margin-bottom: var(--spacing-8);
}

.login-header .logo {
    width: 60px;
    height: 60px;
    margin: 0 auto var(--spacing-4);
    border-radius: 50%;
    background: rgba(0, 245, 255, 0.1);
    padding: var(--spacing-2);
}

.login-header h1 {
    margin-bottom: var(--spacing-1);
    font-size: 1.75rem;
}

.status-bar {
    display: flex;
    justify-content: space-between;
    margin-bottom: var(--spacing-6);
    padding: var(--spacing-3) var(--spacing-4);
    background: rgba(0, 245, 255, 0.05);
    border: 1px solid rgba(0, 245, 255, 0.1);
    border-radius: 0.5rem;
    font-size: 0.75rem;
    color: var(--primary);
    letter-spacing: 0.5px;
}

.status-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
}

.login-form { margin-bottom: var(--spacing-6); }

.error-message {
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
    padding: var(--spacing-3) var(--spacing-4);
    background: rgba(255, 107, 107, 0.1);
    border: 1px solid rgba(255, 107, 107, 0.3);
    border-radius: 0.5rem;
    color: var(--error);
    margin-bottom: var(--spacing-4);
    font-size: 0.875rem;
}

.login-footer {
    text-align: center;
    padding-top: var(--spacing-6);
    border-top: 1px solid rgba(0, 245, 255, 0.1);
}

.login-footer p {
    font-size: 0.875rem;
    color: var(--outline);
    margin-bottom: var(--spacing-2);
}

.link-secondary {
    color: var(--secondary);
    text-decoration: none;
    font-weight: 600;
    transition: color 0.3s ease;
}

.link-secondary:hover { color: var(--primary); }

.system-info {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-4);
    margin-top: var(--spacing-6);
    padding-top: var(--spacing-6);
    border-top: 1px solid rgba(0, 245, 255, 0.1);
    font-size: 0.75rem;
}

.info-item {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-1);
}

.info-item .label {
    color: var(--outline);
    letter-spacing: 0.3px;
    text-transform: uppercase;
}

.info-item .value {
    color: var(--primary);
    font-family: 'JetBrains Mono', monospace;
    font-weight: 600;
}

/* ==================== SETUP PAGE ====================*/
.setup-page {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    background: linear-gradient(135deg, #0a0b0f 0%, #1a1b21 100%);
    position: relative;
    overflow: hidden;
    padding: var(--spacing-6);
}

.setup-container {
    position: relative;
    z-index: 10;
    width: 100%;
    max-width: 600px;
}

.setup-card {
    background: var(--surface-container);
    border: 1px solid rgba(0, 245, 255, 0.1);
    border-radius: 1rem;
    padding: var(--spacing-8);
    backdrop-filter: blur(20px);
}

.setup-header {
    text-align: center;
    margin-bottom: var(--spacing-8);
}

.setup-header .logo {
    width: 60px;
    height: 60px;
    margin: 0 auto var(--spacing-4);
    border-radius: 50%;
    background: rgba(0, 245, 255, 0.1);
    padding: var(--spacing-2);
}

.setup-header h1 {
    margin-bottom: var(--spacing-1);
    font-size: 1.75rem;
}

.setup-form { margin-bottom: var(--spacing-6); }

.form-section { margin-bottom: var(--spacing-8); }

.section-title {
    font-size: 1rem;
    font-weight: 600;
    color: var(--primary);
    margin-bottom: var(--spacing-4);
    letter-spacing: 0.3px;
    text-transform: uppercase;
}

.form-actions {
    display: flex;
    gap: var(--spacing-4);
    margin-top: var(--spacing-8);
}

.form-actions .btn { flex: 1; }

.info-box {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-3);
    padding: var(--spacing-4);
    background: rgba(0, 245, 255, 0.05);
    border: 1px solid rgba(0, 245, 255, 0.15);
    border-radius: 0.5rem;
    font-size: 0.875rem;
    color: var(--outline);
}

.info-box .material-icons {
    color: var(--primary);
    flex-shrink: 0;
    margin-top: 2px;
}

/* ==================== ADMIN PAGE ====================*/
.admin-container {
    display: grid;
    grid-template-columns: 280px 1fr;
    min-height: 100vh;
    gap: 0;
}

.sidebar {
    background: var(--surface-container-lowest);
    border-right: 1px solid rgba(0, 245, 255, 0.1);
    padding: var(--spacing-6);
    display: flex;
    flex-direction: column;
    position: fixed;
    left: 0;
    top: 0;
    height: 100vh;
    width: 280px;
    overflow-y: auto;
    z-index: 100;
}

.sidebar-header {
    text-align: center;
    margin-bottom: var(--spacing-8);
}

.sidebar-header .logo {
    width: 50px;
    height: 50px;
    margin: 0 auto var(--spacing-3);
    border-radius: 50%;
    background: rgba(0, 245, 255, 0.1);
    padding: var(--spacing-2);
}

.sidebar-header h1 {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-1);
}

.sidebar-nav {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-2);
}

.nav-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-3);
    padding: var(--spacing-3) var(--spacing-4);
    border-radius: 0.5rem;
    color: var(--outline);
    text-decoration: none;
    font-size: 0.875rem;
    font-weight: 500;
    transition: all 0.3s ease;
    cursor: pointer;
    border: 1px solid transparent;
}

.nav-item:hover {
    color: var(--primary);
    background: rgba(0, 245, 255, 0.05);
    border-color: rgba(0, 245, 255, 0.1);
}

.nav-item.active {
    color: var(--primary);
    background: rgba(0, 245, 255, 0.1);
    border-color: rgba(0, 245, 255, 0.3);
}

.nav-item .material-icons { font-size: 1.25rem; }

.sidebar-footer {
    margin-top: auto;
    padding-top: var(--spacing-6);
    border-top: 1px solid rgba(0, 245, 255, 0.1);
}

.main-content {
    margin-left: 280px;
    display: flex;
    flex-direction: column;
}

.top-bar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-4) var(--spacing-6);
    background: var(--surface-container-low);
    border-bottom: 1px solid rgba(0, 245, 255, 0.1);
    gap: var(--spacing-6);
}

.breadcrumb {
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
    font-size: 0.75rem;
    color: var(--outline);
    letter-spacing: 0.3px;
    text-transform: uppercase;
}

.breadcrumb .material-icons {
    font-size: 1rem;
    color: var(--primary);
}

.top-bar-actions {
    display: flex;
    align-items: center;
    gap: var(--spacing-4);
    margin-left: auto;
}

.user-profile {
    display: flex;
    align-items: center;
    gap: var(--spacing-3);
    padding-left: var(--spacing-4);
    border-left: 1px solid rgba(0, 245, 255, 0.1);
}

.avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: rgba(0, 245, 255, 0.1);
}

.user-info {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-1);
}

.user-name {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--primary);
    margin: 0;
}

.user-role {
    font-size: 0.75rem;
    color: var(--outline);
    margin: 0;
}

.content-area {
    flex: 1;
    padding: var(--spacing-8);
    overflow-y: auto;
}

.page-header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    margin-bottom: var(--spacing-8);
    gap: var(--spacing-6);
}

.page-header h1 { margin-bottom: var(--spacing-2); }

.header-actions { display: flex; gap: var(--spacing-4); }

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-6);
    margin-bottom: var(--spacing-8);
}

.stat-card {
    background: var(--surface-container);
    border: 1px solid rgba(0, 245, 255, 0.1);
    border-radius: 0.75rem;
    padding: var(--spacing-6);
    transition: transform 0.25s ease, box-shadow 0.25s ease;
}

.stat-card:hover {
    background: var(--surface-container-high);
    border-color: rgba(0, 245, 255, 0.3);
}

.stat-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--spacing-4);
}

.stat-icon {
    color: var(--primary);
    font-size: 1.75rem;
}

.stat-badge {
    font-size: 0.75rem;
    color: var(--success);
    background: rgba(0, 208, 132, 0.15);
    padding: 0.25rem 0.75rem;
    border-radius: 9999px;
}

.stat-value {
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: var(--spacing-2);
}

.stat-label {
    font-size: 0.875rem;
    color: var(--outline);
}

.main-grid {
    display: grid;
    grid-template-columns: 1fr 300px;
    gap: var(--spacing-6);
}

.sidebar-cards {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-6);
}

.terminal-code {
    background: var(--surface-container-lowest);
    padding: var(--spacing-3) var(--spacing-4);
    border-radius: 0.5rem;
    color: var(--primary);
    margin: var(--spacing-3) 0;
    border-left: 2px solid var(--primary);
}

.terminal-output {
    font-size: 0.75rem;
    color: var(--success);
    font-family: 'JetBrains Mono', monospace;
    margin: var(--spacing-2) 0;
}

.terminal-status {
    font-size: 0.75rem;
    color: var(--info);
    font-family: 'JetBrains Mono', monospace;
    margin-bottom: var(--spacing-4);
}

.export-options {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-3);
    margin: var(--spacing-4) 0;
}

.checkbox-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-3);
    padding: var(--spacing-3) var(--spacing-4);
    background: var(--surface-container-lowest);
    border-radius: 0.5rem;
    cursor: pointer;
    transition: background-color 0.2s ease, border-color 0.2s ease;
}

.checkbox-item:hover { background: var(--surface-container-low); }

.checkbox-item input {
    width: 18px;
    height: 18px;
    cursor: pointer;
    accent-color: var(--primary);
}

.checkbox-item .material-icons {
    color: var(--primary);
    font-size: 1.25rem;
}

.checkbox-item span {
    flex: 1;
    font-size: 0.875rem;
    color: var(--outline);
}

/* ==================== PROFESSOR PAGE ====================*/
.professor-container {
    display: grid;
    grid-template-columns: 280px 1fr;
    min-height: 100vh;
    gap: 0;
}

.professor-page .main-content {
    margin-left: 280px;
}

.system-load {
    margin-bottom: var(--spacing-8);
    padding: var(--spacing-6);
    background: var(--surface-container);
    border-radius: 0.75rem;
    border: 1px solid rgba(0, 245, 255, 0.05);
}

.load-label {
    font-size: 0.75rem;
    color: var(--secondary);
    font-weight: 600;
    margin-bottom: var(--spacing-2);
    letter-spacing: 0.5px;
    text-transform: uppercase;
}

.load-bar {
    width: 100%;
    height: 8px;
    background: var(--surface-container-lowest);
    border-radius: 9999px;
    overflow: hidden;
    margin-bottom: var(--spacing-2);
}

.load-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--primary) 0%, var(--secondary) 100%);
    border-radius: 9999px;
    transition: width 0.3s ease;
}

.load-value {
    font-size: 0.75rem;
    color: var(--primary);
    font-weight: 600;
    font-family: 'JetBrains Mono', monospace;
}

.professor-grid {
    display: grid;
    grid-template-columns: 1fr 300px;
    gap: var(--spacing-6);
}

.stats-grid-small {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-4);
    margin-top: var(--spacing-4);
}

.stat-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-2);
    padding: var(--spacing-4);
    background: var(--surface-container-lowest);
    border-radius: 0.5rem;
    cursor: pointer;
    transition: transform 0.2s ease;
}

.stat-item:hover {
    background: var(--surface-container-low);
    transform: translateY(-2px);
}

.stat-item .stat-icon {
    color: var(--primary);
    font-size: 1.5rem;
}

.stat-item .stat-label {
    font-size: 0.75rem;
    color: var(--outline);
    text-align: center;
}

.agenda-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-4);
}

.agenda-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-4);
    padding: var(--spacing-4);
    background: var(--surface-container-lowest);
    border-radius: 0.5rem;
    border-left: 3px solid var(--primary);
    transition: background-color 0.2s ease, border-color 0.2s ease;
}

.agenda-item:hover {
    background: var(--surface-container-low);
}

.agenda-time {
    font-size: 0.75rem;
    color: var(--primary);
    font-weight: 600;
    font-family: 'JetBrains Mono', monospace;
    min-width: 100px;
}

.agenda-details {
    flex: 1;
}

.agenda-title {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--primary);
    margin: 0 0 var(--spacing-1) 0;
}

.agenda-class {
    font-size: 0.75rem;
    color: var(--outline);
    margin: 0;
}

.resources-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-3);
}

.resource-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-3);
    padding: var(--spacing-3) var(--spacing-4);
    background: var(--surface-container-lowest);
    border-radius: 0.5rem;
    transition: background-color 0.2s ease, transform 0.2s ease;
}

.resource-item:hover {
    background: var(--surface-container-low);
}

.resource-item .material-icons {
    color: var(--primary);
    font-size: 1.25rem;
}

.resource-item p {
    flex: 1;
    font-size: 0.875rem;
    color: var(--outline);
    margin: 0;
}

/* ==================== EXPIRATION PAGE ====================*/
.expiration-page {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    background: linear-gradient(135deg, #0a0b0f 0%, #1a1b21 100%);
    position: relative;
    overflow: hidden;
    padding: var(--spacing-6);
}

.expiration-container {
    position: relative;
    z-index: 10;
    width: 100%;
    max-width: 600px;
}

.expiration-card {
    background: var(--surface-container);
    border: 1px solid rgba(0, 245, 255, 0.1);
    border-radius: 1rem;
    padding: var(--spacing-8);
    backdrop-filter: blur(20px);
}

.expiration-header {
    text-align: center;
    margin-bottom: var(--spacing-8);
}

.icon-wrapper {
    width: 80px;
    height: 80px;
    margin: 0 auto var(--spacing-4);
    border-radius: 50%;
    background: rgba(255, 107, 107, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
}

.icon-large {
    font-size: 3rem;
    color: var(--error);
}

.expiration-header h1 {
    margin-bottom: var(--spacing-2);
    font-size: 1.75rem;
}

.status-info {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-4);
    margin-bottom: var(--spacing-8);
    padding: var(--spacing-6);
    background: var(--surface-container-lowest);
    border-radius: 0.75rem;
}

.status-item {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-2);
}

.status-item .label {
    font-size: 0.75rem;
    color: var(--outline);
    letter-spacing: 0.3px;
    text-transform: uppercase;
}

.status-item .value {
    font-size: 0.875rem;
    color: var(--primary);
    font-weight: 600;
}

.status-item .value.error {
    color: var(--error);
}

.message-box {
    margin-bottom: var(--spacing-8);
    padding: var(--spacing-6);
    background: rgba(255, 107, 107, 0.05);
    border: 1px solid rgba(255, 107, 107, 0.15);
    border-radius: 0.75rem;
}

.message-box h2 {
    font-size: 1rem;
    margin-bottom: var(--spacing-4);
}

.message-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-3);
}

.message-list li {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-3);
}

/* ==================== RESPONSIVE ====================*/
@media (max-width: 1024px) {
    .main-grid,
    .professor-grid {
        grid-template-columns: 1fr;
    }

    .sidebar-cards {
        flex-direction: row;
        flex-wrap: wrap;
    }
}

@media (max-width: 900px) {
    .admin-container,
    .professor-container {
        grid-template-columns: 1fr;
    }

    .sidebar {
        position: relative;
        width: 100%;
        height: auto;
        border-right: none;
        border-bottom: 1px solid rgba(0, 245, 255, 0.1);
    }

    .main-content,
    .professor-page .main-content {
        margin-left: 0;
    }

    .top-bar {
        flex-direction: column;
        align-items: flex-start;
    }

    .user-profile {
        padding-left: 0;
        border-left: none;
    }

    .page-header {
        flex-direction: column;
        align-items: flex-start;
    }

    .header-actions {
        width: 100%;
        flex-wrap: wrap;
    }
}

@media (max-width: 768px) {
    html { font-size: 15px; }

    .content-area {
        padding: var(--spacing-6);
    }

    .stats-grid {
        grid-template-columns: 1fr;
    }

    .status-bar {
        flex-direction: column;
        gap: var(--spacing-2);
    }

    .form-actions {
        flex-direction: column;
    }

    .system-info,
    .status-info {
        grid-template-columns: 1fr;
    }

    .agenda-item {
        flex-direction: column;
        align-items: flex-start;
    }

    .agenda-time {
        min-width: 0;
    }

    .stats-grid-small {
        grid-template-columns: 1fr;
    }

    .login-card,
    .setup-card,
    .expiration-card {
        padding: var(--spacing-6);
    }

    .card {
        padding: var(--spacing-5);
    }

    .data-table th,
    .data-table td {
        padding: var(--spacing-2) var(--spacing-3);
    }
}

@media (max-width: 520px) {
    html { font-size: 14px; }

    .content-area {
        padding: var(--spacing-4);
    }

    .login-container,
    .setup-container,
    .expiration-container {
        padding: var(--spacing-4);
    }

    .header-actions,
    .top-bar-actions {
        width: 100%;
        justify-content: flex-start;
    }
}

.message-list .material-icons {
    color: var(--error);
    font-size: 1.25rem;
    flex-shrink: 0;
    margin-top: 2px;
}

.message-list p {
    font-size: 0.875rem;
    color: var(--outline);
    margin: 0;
}

.action-buttons {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-4);
    margin-bottom: var(--spacing-8);
}

.action-buttons .btn {
    width: 100%;
}

.contact-info {
    margin-bottom: var(--spacing-8);
    padding: var(--spacing-6);
    background: var(--surface-container-lowest);
    border-radius: 0.75rem;
}

.contact-info h3 {
    font-size: 1rem;
    margin-bottom: var(--spacing-2);
}

.contact-info > p {
    font-size: 0.875rem;
    color: var(--outline);
    margin-bottom: var(--spacing-4);
}

.contact-details {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-3);
}

.contact-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-3);
}

.contact-item .material-icons {
    color: var(--primary);
    font-size: 1.25rem;
}

.contact-item a,
.contact-item span {
    font-size: 0.875rem;
    color: var(--outline);
}

.contact-item a {
    color: var(--secondary);
    text-decoration: none;
    transition: color 0.3s ease;
}

.contact-item a:hover {
    color: var(--primary);
}

.expiration-footer {
    text-align: center;
    padding-top: var(--spacing-6);
    border-top: 1px solid rgba(0, 245, 255, 0.1);
}

/* ==================== EXPORT OPTIONS ====================*/
.export-options {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-3);
    margin: var(--spacing-4) 0;
}

.checkbox-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-3);
    padding: var(--spacing-3) var(--spacing-4);
    background: var(--surface-container-lowest);
    border-radius: 0.5rem;
    cursor: pointer;
    transition: background-color 0.2s ease, border-color 0.2s ease;
}

.checkbox-item:hover {
    background: var(--surface-container-low);
}

.checkbox-item input {
    width: 18px;
    height: 18px;
    cursor: pointer;
    accent-color: var(--primary);
}

.checkbox-item .material-icons {
    color: var(--primary);
    font-size: 1.25rem;
}

.checkbox-item span {
    flex: 1;
    font-size: 0.875rem;
    color: var(--outline);
}

/* ==================== GLOW ELEMENTS ====================*/
.glow-element {
    position: fixed;
    border-radius: 50%;
    pointer-events: none;
    z-index: 1;
}

.glow-1 {
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(0, 245, 255, 0.15) 0%, transparent 70%);
    top: -100px;
    right: -100px;
    animation: float 20s ease-in-out infinite;
}

.glow-2 {
    width: 300px;
    height: 300px;
    background: radial-gradient(circle, rgba(208, 91, 255, 0.1) 0%, transparent 70%);
    bottom: -50px;
    left: -50px;
    animation: float-reverse 25s ease-in-out infinite;
}

@keyframes float {
    0%, 100% {
        transform: translate(0, 0);
    }
    50% {
        transform: translate(30px, -30px);
    }
}

@keyframes float-reverse {
    0%, 100% {
        transform: translate(0, 0);
    }
    50% {
        transform: translate(-30px, 30px);
    }
}

/* ==================== RESPONSIVIDADE ====================*/
@media (max-width: 1024px) {
    .admin-container,
    .professor-container {
        grid-template-columns: 1fr;
    }

    .sidebar {
        position: fixed;
        left: -280px;
        transition: left 0.3s ease;
        z-index: 1000;
    }

    .sidebar.active {
        left: 0;
    }

    .main-content {
        margin-left: 0;
    }

    .main-grid {
        grid-template-columns: 1fr;
    }

    .sidebar-cards {
        grid-template-columns: repeat(2, 1fr);
    }

    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .professor-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .login-container,
    .setup-container,
    .expiration-container {
        max-width: 100%;
    }

    .login-card,
    .setup-card,
    .expiration-card {
        border-radius: 0;
        padding: var(--spacing-6);
    }

    .page-header {
        flex-direction: column;
        align-items: flex-start;
    }

    .header-actions {
        width: 100%;
        flex-direction: column;
    }

    .header-actions .btn {
        width: 100%;
    }

    .stats-grid {
        grid-template-columns: 1fr;
    }

    .status-info {
        grid-template-columns: 1fr;
    }

    .top-bar {
        flex-direction: column;
        gap: var(--spacing-4);
    }

    .top-bar-actions {
        width: 100%;
        justify-content: space-between;
    }

    .user-profile {
        padding-left: 0;
        border-left: none;
    }

    .data-table {
        font-size: 0.75rem;
    }

    .data-table th,
    .data-table td {
        padding: var(--spacing-2) var(--spacing-3);
    }

    .sidebar-cards {
        grid-template-columns: 1fr;
    }

    .action-buttons {
        flex-direction: column;
    }

    .action-buttons .btn {
        width: 100%;
    }
}

@media (max-width: 480px) {
    :root {
        font-size: 14px;
    }

    h1 {
        font-size: 1.75rem;
    }

    h2 {
        font-size: 1.25rem;
    }

    h3 {
        font-size: 1rem;
    }

    .login-card,
    .setup-card,
    .expiration-card {
        padding: var(--spacing-6);
    }

    .btn {
        padding: 0.625rem 1.25rem;
        font-size: 0.75rem;
    }

    .form-group {
        margin-bottom: var(--spacing-4);
    }

    .stats-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-4);
    }

    .stat-card {
        padding: var(--spacing-4);
    }

    .stat-value {
        font-size: 1.5rem;
    }

    .breadcrumb {
        display: none;
    }

    .content-area {
        padding: var(--spacing-4);
    }

    .page-header h1 {
        font-size: 1.25rem;
    }

    .glow-1,
    .glow-2 {
        display: none;
    }
}

/* ==================== DARK MODE TOGGLE ====================*/
/* body.dark-mode removed — use html.dark instead */

html.light {
    background: linear-gradient(165deg, #e8ecf4 0%, #dde3ef 30%, #e4eaf5 60%, #edf1f8 100%) !important;
    color: #1e293b !important;
    --surface: #f4f6fb;
    --surface-bright: #edf1f8;
    --surface-container-lowest: #edf1f8;
    --surface-container-low: #e8ecf4;
    --surface-container: #f0f3f9;
    --surface-container-high: #e4eaf5;
    --primary: #0891b2;
    --primary-dim: #0e7490;
    --accent: #7c3aed;
    --ok: #059669;
    --warn: #d97706;
    --error: #dc2626;    --text: #1e293b;
    --text-muted: #64748b;
    --border: rgba(15, 23, 42, 0.08);
    --border-strong: rgba(15, 23, 42, 0.15);
}
html.light .card {
    background: rgba(244, 246, 251, 0.85);
    border-color: rgba(15, 23, 42, 0.1);
    box-shadow: 0 2px 12px rgba(0, 245, 255, 0.1), 0 0 0 1px rgba(0,245,255,0.08) inset;
}

html.light .card:hover {
    background: rgba(244, 246, 251, 0.95);
    box-shadow: 0 6px 28px rgba(0, 245, 255, 0.2), 0 0 0 1px rgba(0,245,255,0.15) inset;
    border-color: rgba(0, 245, 255, 0.3);
}

html.light .input-wrapper {
    background: rgba(237, 241, 248, 0.6);
    border-color: rgba(15, 23, 42, 0.12);
    box-shadow: 0 2px 8px rgba(0, 245, 255, 0.08), 0 0 0 1px rgba(0,245,255,0.08) inset;
}
html.light .input-wrapper:focus-within {
    box-shadow: 0 0 0 2px rgba(0, 245, 255, 0.3), 0 0 0 1px rgba(0,245,255,0.15) inset;
}

html.light .form-input {
    color: #1e293b;
}

html.light .sidebar {
    background: rgba(240, 243, 249, 0.85);
    border-color: rgba(15, 23, 42, 0.1);
    box-shadow: 2px 0 12px rgba(15, 23, 42, 0.06);
}

html.light .top-bar {
    background: rgba(240, 243, 249, 0.8);
    border-color: rgba(15, 23, 42, 0.08);
    backdrop-filter: blur(14px);
    box-shadow: 0 1px 4px rgba(15, 23, 42, 0.04);
}

/* ==================== ANIMATIONS ====================*/
@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

@keyframes glow {
    0%, 100% {
        box-shadow: 0 0 20px rgba(0, 245, 255, 0.3);
    }
    50% {
        box-shadow: 0 0 40px rgba(0, 245, 255, 0.5);
    }
}

.card {
    animation: slideIn 0.3s ease-out;
}

.btn-primary {
    animation: glow 3s ease-in-out infinite;
}

/* ==================== SCROLLBAR ====================*/
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--surface-container-lowest);
}

::-webkit-scrollbar-thumb {
    background: var(--primary);
    border-radius: 9999px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--secondary);
}

/* ==================== UTILITIES ====================*/
.text-center { text-align: center; }
.text-right { text-align: right; }
.mt-4 { margin-top: var(--spacing-4); }
.mb-4 { margin-bottom: var(--spacing-4); }
.p-4 { padding: var(--spacing-4); }
.hidden { display: none; }
.visible { display: block; }
.flex { display: flex; }
.flex-col { flex-direction: column; }
.gap-4 { gap: var(--spacing-4); }
.rounded { border-radius: 0.5rem; }
.rounded-full { border-radius: 9999px; }
/* ========================================
   ACCESSIBILITY: Reduced Motion
   ======================================== */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

/* ========================================
   PERFORMANCE: Will-change hints
   ======================================== */
.card:hover,
.stat-card:hover {
  will-change: transform;
}

.sidebar {
  will-change: left;
}

.load-fill {
  will-change: width;
}

.agenda-item:hover,
.resource-item:hover {
  will-change: transform;
}

/* ========================================
   ADDITIONAL KEYFRAMES
   ======================================== */
@keyframes shake {
  0%, 100% { transform: translateX(0); }
  20% { transform: translateX(-5px); }
  40% { transform: translateX(5px); }
  60% { transform: translateX(-3px); }
  80% { transform: translateX(3px); }
}

@keyframes slideInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes modalIn {
  from {
    opacity: 0;
    transform: scale(0.95) translateY(10px);
  }
  to {
    opacity: 1;
    transform: scale(1) translateY(0);
  }
}

@keyframes toastSlideIn {
  from {
    opacity: 0;
    transform: translateX(100%);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes toastSlideOut {
  from {
    opacity: 1;
    transform: translateX(0);
  }
  to {
    opacity: 0;
    transform: translateX(100%);
  }
}

@keyframes shimmer {
  0% { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

@keyframes countUp {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}



/* ========================================
   MODAL / DIALOG STYLES
   ======================================== */
.modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(4px);
  z-index: 999;
}

.modal-dialog {
  border: none;
  border-radius: 16px;
  background: var(--surface);
  color: var(--text, #e4e4e7);
  padding: 0;
  max-width: 500px;
  width: 90%;
  box-shadow: 0 25px 60px rgba(0, 0, 0, 0.5);
}

.modal-dialog::backdrop {
  background: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(4px);
}

.modal-dialog[open] {
  animation: modalIn 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.modal-close {
  background: none;
  border: none;
  color: var(--outline, #8a8c96);
  font-size: 24px;
  cursor: pointer;
  padding: 4px 8px;
  border-radius: 8px;
  transition: color 0.2s ease, background-color 0.2s ease;
}

.modal-close:hover {
  color: var(--text, #e4e4e7);
  background-color: var(--surface-container-high, #28292f);
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px 20px;
  border-bottom: 1px solid var(--surface-variant, #3a3f47);
}

.modal-body {
  padding: 20px;
}

/* ========================================
   SKELETON LOADING
   ======================================== */
.skeleton {
  background: linear-gradient(90deg,
    var(--surface-container, #1e1f25) 25%,
    var(--surface-container-high, #28292f) 50%,
    var(--surface-container, #1e1f25) 75%
  );
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
  border-radius: 8px;
}

.skeleton-card {
  height: 200px;
  margin-bottom: 16px;
}

.skeleton-text {
  height: 14px;
  margin-bottom: 8px;
  width: 80%;
}

.skeleton-title {
  height: 24px;
  margin-bottom: 12px;
  width: 50%;
}

/* ========================================
   TOAST NOTIFICATIONS
   ======================================== */
#toast-container {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 10000;
  display: flex;
  flex-direction: column-reverse;
  gap: 8px;
  pointer-events: none;
}

.toast {
  padding: 12px 20px;
  border-radius: 12px;
  background: var(--surface-container-high, #28292f);
  color: var(--text, #e4e4e7);
  border-left: 4px solid var(--primary);
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.3);
  font-size: 14px;
  pointer-events: auto;
  cursor: pointer;
}

.toast.success { border-left-color: #22c55e; }
.toast.error { border-left-color: #ef4444; }
.toast.info { border-left-color: var(--primary); }

/* ========================================
   FOCUS & ACCESSIBILITY
   ======================================== */
:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
  transition: outline-offset 0.2s ease;
}

.skip-link {
  position: absolute;
  top: -40px;
  left: 0;
  background: var(--primary);
  color: var(--surface, #121318);
  padding: 8px 16px;
  z-index: 10001;
  transition: top 0.3s ease;
  text-decoration: none;
  font-weight: 600;
}

.skip-link:focus {
  top: 0;
}


/* ============================================================
   VISUAL OVERHAUL — All missing classes + improvements
   ============================================================ */

/* --- SMOOTH DARK MODE TRANSITION --- */
html {
  transition: background-color 0.4s ease, color 0.4s ease;
}
html * {
  transition-property: background-color, color, border-color, box-shadow, opacity, transform;
  transition-duration: 0.25s;
  transition-timing-function: ease;
}
/* Disable transitions on load to prevent flash */
html:not(.transition-ready) * {
  transition: none !important;
}

/* --- GLASS CARD (main container) --- */
.glass-card {
  background: rgba(30, 30, 35, 0.75);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 1rem;
  transition: transform 0.3s cubic-bezier(0.34, 1.56, 0.64, 1), box-shadow 0.3s ease, border-color 0.3s ease;
}
.glass-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.3), 0 0 20px rgba(0, 245, 255, 0.06);
  border-color: rgba(0, 245, 255, 0.15);
}

/* --- NEO BUTTON (secondary/outline) --- */
.neo-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.65rem 1.25rem;
  border-radius: 0.75rem;
  font-weight: 600;
  font-size: 0.9rem;
  border: 1px solid rgba(0, 245, 255, 0.2);
  background: rgba(0, 245, 255, 0.06);
  color: #00f5ff;
  cursor: pointer;
  position: relative;
  overflow: hidden;
  transition: all 0.25s cubic-bezier(0.34, 1.56, 0.64, 1);
}
.neo-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(0, 245, 255, 0.15);
  border-color: rgba(0, 245, 255, 0.4);
  background: rgba(0, 245, 255, 0.12);
}
.neo-btn:active {
  transform: translateY(0) scale(0.97);
}

/* --- PRIMARY BUTTON --- */
.btn-primary {
  position: relative;
  overflow: hidden;
  transition: all 0.25s cubic-bezier(0.34, 1.56, 0.64, 1);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(0, 245, 255, 0.3);
}
.btn-primary:active {
  transform: translateY(0) scale(0.97);
}

/* --- SECONDARY BUTTON --- */
.btn-secondary {
  position: relative;
  overflow: hidden;
  transition: all 0.25s cubic-bezier(0.34, 1.56, 0.64, 1);
}
.btn-secondary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.2);
}
.btn-secondary:active {
  transform: translateY(0) scale(0.97);
}

/* --- BUTTON RIPPLE EFFECT --- */
.btn-ripple {
  position: absolute;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.35);
  transform: scale(0);
  animation: rippleExpand 0.6s ease-out forwards;
  pointer-events: none;
}
@keyframes rippleExpand {
  to { transform: scale(4); opacity: 0; }
}
.btn-loading {
  pointer-events: none;
  opacity: 0.7;
}
.btn-loading::after {
  content: '';
  display: inline-block;
  width: 1rem;
  height: 1rem;
  border: 2px solid rgba(255,255,255,0.3);
  border-top-color: #fff;
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
  margin-left: 0.5rem;
  vertical-align: middle;
}

/* --- STAT CARD / STAT NUMBER --- */
.stat-number {
  font-size: 2.25rem;
  font-weight: 800;
  line-height: 1;
  font-variant-numeric: tabular-nums;
  background: linear-gradient(135deg, #00f5ff, #7b61ff);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.stat-label {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: rgba(255, 255, 255, 0.5);
  font-weight: 500;
}
html.light .stat-label {
  color: #64748b;
}



/* --- LIGHT MODE: OVERRIDE TAILWIND UTILITY CLASSES --- */
html.light body,
html.light .bg-surface {
    background: linear-gradient(165deg, #e8ecf4 0%, #dde3ef 30%, #e4eaf5 60%, #edf1f8 100%) !important;
    background-color: #e8ecf4 !important;
    background-attachment: fixed !important;
}
html.light .bg-surface-container { background-color: rgba(240, 243, 249, 0.7) !important; }
html.light .bg-surface-container-low { background-color: rgba(237, 241, 248, 0.6) !important; }
html.light .bg-surface-container-high { background-color: rgba(228, 234, 245, 0.7) !important; }
html.light .bg-surface-container-lowest { background-color: rgba(244, 246, 251, 0.65) !important; }

/* Override inline style backgrounds that use dark colors */
html.light body[style*="background"],
html.light body[style*="background-color"] {
    background: linear-gradient(165deg, #e8ecf4 0%, #dde3ef 30%, #e4eaf5 60%, #edf1f8 100%) !important;
    background-color: #e8ecf4 !important;
}


/* --- DARK MODE: LIGHT SHADOWS FOR DEPTH --- */
.dark .glass-card {
  box-shadow: 0 0 0 1px rgba(0, 245, 255, 0.12) inset, 0 2px 8px rgba(0, 0, 0, 0.3), 0 2px 12px rgba(0, 245, 255, 0.06);
}
.dark .glass-card:hover {
  box-shadow: 0 0 0 1px rgba(0, 245, 255, 0.2) inset, 0 4px 16px rgba(0, 0, 0, 0.3), 0 8px 32px rgba(0, 245, 255, 0.12);
}
.dark .card {
  box-shadow: 0 0 0 1px rgba(0, 245, 255, 0.1) inset, 0 1px 8px rgba(0, 245, 255, 0.05);
}
.dark .card:hover {
  box-shadow: 0 0 0 1px rgba(0, 245, 255, 0.15) inset, 0 4px 20px rgba(0, 245, 255, 0.1);
}
.dark .feature-card {
  box-shadow: 0 1px 6px rgba(0, 245, 255, 0.03), 0 0 0 1px rgba(255, 255, 255, 0.03) inset;
}
.dark .feature-card:hover {
  box-shadow: 0 6px 24px rgba(0, 245, 255, 0.1), 0 0 0 1px rgba(0, 245, 255, 0.1) inset;
}
.dark .neo-btn {
  box-shadow: 0 1px 6px rgba(0, 245, 255, 0.04);
}
.dark .neo-btn:hover {
  box-shadow: 0 4px 20px rgba(0, 245, 255, 0.15);
}
.dark .sidebar {
  box-shadow: 2px 0 16px rgba(0, 0, 0, 0.3);
}
.dark .top-bar {
  box-shadow: 0 1px 8px rgba(0, 0, 0, 0.2);
}
.dark details {
  box-shadow: 0 1px 6px rgba(0, 245, 255, 0.03), 0 0 0 1px rgba(255, 255, 255, 0.03) inset;
}
.dark details[open] {
  box-shadow: 0 4px 16px rgba(0, 245, 255, 0.06), 0 0 0 1px rgba(0, 245, 255, 0.06) inset;
}
.dark .data-table tbody tr {
  border-color: rgba(255, 255, 255, 0.04);
}
.dark .data-table tbody tr:hover {
  background: rgba(0, 245, 255, 0.03);
}
.dark .input-wrapper {
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.2), 0 0 0 1px rgba(255, 255, 255, 0.04) inset;
}
.dark .input-wrapper:focus-within {
  box-shadow: 0 0 0 2px rgba(0, 245, 255, 0.2), 0 0 0 1px rgba(255, 255, 255, 0.06) inset;
}


/* --- ENTRANCE ANIMATION (.appear) --- */
.appear {
  opacity: 0;
  transform: translateY(24px);
  animation: entranceStagger 0.55s cubic-bezier(0.22, 1, 0.36, 1) forwards;
}
@keyframes entranceStagger {
  from { opacity: 0; transform: translateY(24px); }
  to { opacity: 1; transform: translateY(0); }
}

/* --- COUNTER ANIMATION --- */
@keyframes countPop {
  0% { transform: scale(0.8); opacity: 0; }
  60% { transform: scale(1.05); }
  100% { transform: scale(1); opacity: 1; }
}
.count-animate {
  animation: countPop 0.4s cubic-bezier(0.34, 1.56, 0.64, 1) forwards;
}

/* --- TOAST NOTIFICATIONS --- */
.toast-container {
  position: fixed;
  top: 1.5rem;
  right: 1.5rem;
  z-index: 9999;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  pointer-events: none;
}
.toast {
  pointer-events: auto;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.85rem 1.25rem;
  border-radius: 0.85rem;
  font-weight: 500;
  font-size: 0.9rem;
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
  animation: toastSlideIn 0.4s cubic-bezier(0.34, 1.56, 0.64, 1) forwards;
  max-width: 380px;
  border: 1px solid rgba(255,255,255,0.1);
}
.toast-success {
  background: rgba(16, 185, 129, 0.9);
  color: #fff;
}
.toast-error {
  background: rgba(239, 68, 68, 0.9);
  color: #fff;
}
.toast-info {
  background: rgba(59, 130, 246, 0.9);
  color: #fff;
}
.toast.removing {
  animation: toastSlideOut 0.3s ease-in forwards;
}
@keyframes toastSlideIn {
  from { opacity: 0; transform: translateX(100px) scale(0.9); }
  to { opacity: 1; transform: translateX(0) scale(1); }
}
@keyframes toastSlideOut {
  from { opacity: 1; transform: translateX(0); }
  to { opacity: 0; transform: translateX(100px); }
}

/* --- MODAL --- */
.modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  z-index: 9998;
  opacity: 0;
  transition: opacity 0.3s ease;
}
.modal-backdrop.active {
  opacity: 1;
}
.modal-content {
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%) scale(0.9);
  z-index: 9999;
  opacity: 0;
  transition: all 0.35s cubic-bezier(0.34, 1.56, 0.64, 1);
  max-width: 90vw;
  max-height: 85vh;
  overflow-y: auto;
}
.modal-content.active {
  opacity: 1;
  transform: translate(-50%, -50%) scale(1);
}

/* --- TABLE ROW HOVER --- */
.data-table tbody tr {
  transition: background-color 0.2s ease;
}
.data-table tbody tr:hover {
  background: rgba(0, 245, 255, 0.08);
}

/* --- NAV ITEM HOVER --- */
.nav-item {
  transition: all 0.2s ease;
  border-left: 3px solid transparent;
}
.nav-item:hover {
  border-left-color: #00f5ff;
  background: rgba(0, 245, 255, 0.08);
}
.nav-item.active {
  border-left-color: #00f5ff;
  background: rgba(0, 245, 255, 0.1);
}

/* --- BADGE PULSE --- */
.badge-live {
  position: relative;
}
.badge-live::after {
  content: '';
  position: absolute;
  top: -2px;
  right: -2px;
  width: 8px;
  height: 8px;
  background: #10b981;
  border-radius: 50%;
  animation: badgePulse 2s ease-in-out infinite;
}
@keyframes badgePulse {
  0%, 100% { box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.5); }
  50% { box-shadow: 0 0 0 6px rgba(16, 185, 129, 0); }
}

/* --- EMPTY STATE --- */
.empty-state {
  text-align: center;
  padding: 3rem 1.5rem;
  opacity: 0.7;
}
.empty-state .material-symbols-outlined {
  font-size: 4rem;
  opacity: 0.3;
}

/* --- SKELETON SHIMMER --- */
.skeleton {
  background: linear-gradient(90deg, rgba(255,255,255,0.04) 25%, rgba(255,255,255,0.08) 50%, rgba(255,255,255,0.04) 75%);
  background-size: 200% 100%;
  animation: shimmer 1.5s ease-in-out infinite;
  border-radius: 0.5rem;
}
html.light .skeleton {
  background: linear-gradient(90deg, rgba(15,23,42,0.04) 25%, rgba(15,23,42,0.08) 50%, rgba(15,23,42,0.04) 75%);
  background-size: 200% 100%;
}

/* --- FORM INPUT FOCUS --- */
input, select, textarea {
  transition: border-color 0.25s ease, box-shadow 0.25s ease, background-color 0.25s ease;
}
input:focus, select:focus, textarea:focus {
  border-color: #00f5ff !important;
  box-shadow: 0 0 0 3px rgba(0, 245, 255, 0.15);
}

/* --- PAGE MAIN FADE IN --- */
main {
  animation: fadeInUp 0.4s ease forwards;
}
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(12px); }
  to { opacity: 1; transform: translateY(0); }
}

/* --- SCROLLBAR --- */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: rgba(255,255,255,0.12); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: rgba(255,255,255,0.2); }
html.light ::-webkit-scrollbar-thumb { background: rgba(15,23,42,0.15); border-radius: 4px; }
html.light ::-webkit-scrollbar-thumb:hover { background: rgba(15,23,42,0.25); }

/* --- LIGHT MODE TEXT READABILITY --- */
html.light, html.light body {
    background: linear-gradient(165deg, #f8faff 0%, #eef2f9 40%, #f0f4fa 100%) !important;
    color: #1e293b;
}
/* --- LIGHT MODE: GLASS-CARD SHADOW + GLOW --- */
html.light .glass-card {
    background: rgba(240, 243, 249, 0.78);
    border-color: rgba(0, 245, 255, 0.2);
    backdrop-filter: blur(18px);
    box-shadow:
        0 0 0 1px rgba(0, 245, 255, 0.18) inset,
        0 2px 8px rgba(15, 23, 42, 0.08),
        0 2px 16px rgba(0, 245, 255, 0.1),
        0 1px 0 rgba(255, 255, 255, 0.6) inset;
}
html.light .glass-card:hover {
    background: rgba(237, 241, 248, 0.85);
    border-color: rgba(0, 245, 255, 0.35);
    box-shadow:
        0 0 0 1px rgba(0, 245, 255, 0.3) inset,
        0 4px 16px rgba(15, 23, 42, 0.1),
        0 8px 40px rgba(0, 245, 255, 0.18),
        0 1px 0 rgba(255, 255, 255, 0.7) inset;
}

html.light .card,
html.light .feature-card {
    color: #1e293b;
    box-shadow:
        0 0 0 1px rgba(0, 245, 255, 0.1) inset,
        0 2px 8px rgba(15, 23, 42, 0.06),
        0 2px 12px rgba(0, 245, 255, 0.06);
}
html.light .card:hover,
html.light .feature-card:hover {
    color: #1e293b;
    box-shadow:
        0 0 0 1px rgba(0, 245, 255, 0.15) inset,
        0 4px 16px rgba(15, 23, 42, 0.08),
        0 6px 28px rgba(0, 245, 255, 0.15);
}
html.light .neo-cta {
    color: #ffffff;
}
html.light h1, html.light h2, html.light h3, html.light h4 {
    color: #0f172a;
}
html.light p, html.light li, html.light td, html.light th {
    color: #334155;
}
html.light span, html.light label {
    color: #475569;
}
html.light .text-on-surface-variant,
html.light .text-muted,
html.light .muted {
    color: #64748b;
}
html.light a {
    color: #0891b2;
}
html.light a:hover {
    color: #0e7490;
}
html.light .btn-primary,
html.light .neo-cta {
    color: #ffffff;
}
html.light .bg-surface,
html.light [style*="background: #121318"] {
    background: linear-gradient(165deg, #f8faff 0%, #eef2f9 40%, #f0f4fa 100%) !important;
}
html.light .stat-number {
    color: #0891b2;
}
html.light .badge,
html.light [class*="badge-"] {
    color: #1e293b;
}
html.light footer,
html.light .footer {
    color: #64748b;
    border-color: rgba(15, 23, 42, 0.06);
}


/* --- TOOLTIP --- */
[data-tooltip] {
  position: relative;
}
[data-tooltip]::after {
  content: attr(data-tooltip);
  position: absolute;
  bottom: 110%;
  left: 50%;
  transform: translateX(-50%) translateY(4px);
  padding: 0.4rem 0.7rem;
  background: #1a1a2e;
  color: #e0e0e0;
  font-size: 0.75rem;
  border-radius: 0.4rem;
  white-space: nowrap;
  opacity: 0;
  pointer-events: none;
  transition: all 0.2s ease;
}
[data-tooltip]:hover::after {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

/* --- STATUS BADGE COLORS --- */
.badge-confirmed {
  background: rgba(16, 185, 129, 0.15);
  color: #10b981;
  border: 1px solid rgba(16, 185, 129, 0.3);
}
.badge-pending {
  background: rgba(245, 158, 11, 0.15);
  color: #f59e0b;
  border: 1px solid rgba(245, 158, 11, 0.3);
}
.badge-cancelled {
  background: rgba(239, 68, 68, 0.15);
  color: #ef4444;
  border: 1px solid rgba(239, 68, 68, 0.3);
}

/* --- CHIPS / TAGS --- */
.chip {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.3rem 0.75rem;
  border-radius: 9999px;
  font-size: 0.8rem;
  font-weight: 500;
  border: 1px solid rgba(255,255,255,0.1);
  background: rgba(255,255,255,0.05);
  cursor: pointer;
  transition: all 0.2s ease;
}
.chip:hover {
  background: rgba(0, 245, 255, 0.1);
  border-color: rgba(0, 245, 255, 0.3);
}
.chip.active {
  background: rgba(0, 245, 255, 0.15);
  border-color: #00f5ff;
  color: #00f5ff;
}