@import url('https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@300;400;500;600;700;800&display=swap');

:root {
    /* Light Mode Variables */
    --primary: #475BE8;
    --primary-soft: rgba(71, 91, 232, 0.1);
    --primary-gradient: linear-gradient(135deg, #475BE8 0%, #2F41C7 100%);
    --bg-main: #F4F7FE;
    --panel-white: #FFFFFF;
    --text-heading: #11142D;
    --text-body: #808191;
    --success: #2ED480;
    --danger: #F45252;
    --border-light: #E4E4E4;
    --radius-xl: 30px;
    --radius-lg: 18px;
    --radius-md: 12px;
    --shadow-premium: 0px 20px 50px rgba(0, 0, 0, 0.05);
    --shadow-glow: 0px 10px 30px rgba(71, 91, 232, 0.15);
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --acadly-logo: #475BE8;
}

/* Dark Mode Variables */
[data-theme="dark"] {
    --bg-main: #0B1437;
    --panel-white: #111C44;
    --text-heading: #FFFFFF;
    --text-body: #A3AED0;
    --border-light: rgba(255, 255, 255, 0.1);
    --shadow-premium: 0px 20px 50px rgba(0, 0, 0, 0.3);
    --primary-soft: rgba(71, 91, 232, 0.2);
    --primary: #707EFA;
    --acadly-logo: #FFFFFF;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    font-family: 'Plus Jakarta Sans', sans-serif;
}

body {
    background-color: var(--bg-main);
    color: var(--text-heading);
    line-height: 1.6;
    min-height: 100vh;
    transition: background-color 0.3s ease, color 0.3s ease;
}

/* Background Accents */
body::before {
    content: '';
    position: fixed;
    top: -10%;
    right: -10%;
    width: 40%;
    height: 40%;
    background: radial-gradient(circle, rgba(71, 91, 232, 0.05) 0%, transparent 70%);
    z-index: -1;
}

/* Auth Cards Redesign */
.centered-body {
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 24px;
    min-height: 100vh;
}

.auth-card {
    background: var(--panel-white);
    padding: 4rem 3rem;
    border-radius: var(--radius-xl);
    width: 100%;
    max-width: 480px;
    box-shadow: var(--shadow-premium);
    border: 1px solid var(--border-light);
    text-align: center;
}

.auth-card h1 {
    font-size: 2.75rem;
    font-weight: 800;
    letter-spacing: -0.03em;
    color: var(--acadly-logo);
    margin-bottom: 0.5rem;
}

.auth-card p {
    color: var(--text-body);
    margin-bottom: 3rem;
    font-weight: 500;
}

/* Advanced Inputs */
.form-group {
    margin-bottom: 1.5rem;
    text-align: left;
}

label {
    font-size: 0.85rem;
    font-weight: 700;
    color: var(--text-heading);
    margin-bottom: 10px;
    display: block;
    margin-left: 5px;
}

input, textarea {
    width: 100%;
    padding: 16px 20px;
    background: var(--bg-main);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-md);
    font-size: 1rem;
    transition: var(--transition);
    color: var(--text-heading);
    font-weight: 500;
}

input:focus, textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0px 10px 25px rgba(71, 91, 232, 0.06);
}

/* Premium Buttons */
.btn {
    padding: 16px 30px;
    border-radius: var(--radius-md);
    font-weight: 700;
    font-size: 1rem;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    border: none;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
}

.btn-primary {
    background: var(--primary-gradient);
    color: white;
    box-shadow: var(--shadow-glow);
}

.btn-primary:hover:not(:disabled) {
    transform: translateY(-4px);
    box-shadow: 0px 15px 40px rgba(71, 91, 232, 0.25);
}

.btn-primary:disabled {
    background: #D1D1D1;
    cursor: not-allowed;
    box-shadow: none;
}

.btn-secondary {
    background: var(--primary-soft);
    color: var(--primary);
}

[data-theme="dark"] .btn-secondary {
    background: rgba(255, 255, 255, 0.05);
    color: #FFFFFF;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.btn-secondary:hover {
    background: rgba(71, 91, 232, 0.15);
    transform: translateY(-2px);
}

.btn-danger {
    background: #FFF0F0;
    color: var(--danger);
}

[data-theme="dark"] .btn-danger {
    background: rgba(244, 82, 82, 0.1);
    color: #FF8080;
}

.btn-danger:hover:not(:disabled) {
    background: var(--danger);
    color: white;
    transform: translateY(-2px);
}

/* Header Glassmorphism */
header {
    background: var(--panel-white);
    backdrop-filter: blur(20px);
    padding: 1.25rem 5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid var(--border-light);
    position: sticky;
    top: 0;
    z-index: 1000;
}

header h1 {
    font-size: 1.75rem;
    font-weight: 800;
    color: var(--acadly-logo);
}

.user-info {
    display: flex;
    align-items: center;
    gap: 20px;
}

.logout-btn {
    padding: 10px 20px !important;
    font-size: 0.9rem !important;
}

/* Theme Toggle Button */
.theme-toggle-btn {
    background: var(--primary-soft);
    border: 1px solid var(--border-light);
    width: 42px;
    height: 42px;
    border-radius: 12px;
    cursor: pointer;
    font-size: 1.2rem;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}

[data-theme="dark"] .theme-toggle-btn {
    background: rgba(255, 255, 255, 0.05);
    color: #FFFFFF;
}

.theme-toggle-btn:hover {
    transform: scale(1.1);
    background: var(--border-light);
}

/* Sidebar & Dashboard Layout */
main.dashboard-container {
    max-width: 1440px;
    margin: 3.5rem auto;
    display: grid;
    grid-template-columns: 280px 1fr;
    gap: 35px;
    padding: 0 5rem;
}

.panel {
    background: var(--panel-white);
    padding: 2.5rem;
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-premium);
    border: 1px solid var(--border-light);
}

.panel h2 {
    font-size: 1.6rem;
    font-weight: 800;
    margin-bottom: 2rem;
}

/* Navigation Buttons */
#dashboard-nav {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.nav-btn {
    width: 100%;
    padding: 16px 20px;
    border: none;
    border-radius: var(--radius-md);
    background: transparent;
    color: var(--text-body);
    font-size: 1rem;
    font-weight: 600;
    text-align: left;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 12px;
}

.nav-btn.active {
    background: var(--primary-soft);
    color: var(--primary);
}

/* QR Section */
.qr-section {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    width: 100%;
}

.session-controls {
    display: flex;
    flex-direction: row;
    gap: 16px;
    width: 100%;
    max-width: 500px;
    margin: 0;
    justify-content: flex-start;
}

#qrcode-wrapper {
    background: #FFFFFF;
    padding: 2rem;
    border-radius: var(--radius-xl);
    box-shadow: 0px 10px 40px rgba(0, 0, 0, 0.05);
    margin: 2rem 0;
    border: 1px solid var(--border-light);
    align-self: center;
}

/* Stats */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
    margin-top: 2.5rem;
    width: 100%;
}

.stat-card {
    background: var(--bg-main);
    padding: 2rem 1.5rem;
    border-radius: var(--radius-lg);
    text-align: center;
    border: 1px solid var(--border-light);
}

.stat-value {
    font-size: 2.75rem;
    font-weight: 800;
    color: var(--primary);
}

/* History Cards */
.history-card {
    margin-bottom: 16px;
    padding: 1.5rem 2rem;
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-light);
    background: var(--panel-white);
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: var(--transition);
    position: relative;
}

.history-card:hover {
    transform: scale(1.01);
    box-shadow: var(--shadow-premium);
    border-color: var(--primary);
}

.delete-history-btn {
    padding: 8px 18px !important;
    font-size: 0.75rem !important;
    background: #FFF0F0 !important;
    color: var(--danger) !important;
    border-radius: 10px !important;
    font-weight: 800 !important;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    transition: var(--transition) !important;
}

.delete-history-btn:hover {
    background: var(--danger) !important;
    color: white !important;
    transform: translateY(-2px);
}

.flagged-list {
    list-style: none;
    padding: 0;
}

.flagged-item {
    padding: 1rem 1.5rem;
    border-radius: var(--radius-md);
    border: 1px solid var(--border-light);
    margin-bottom: 12px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    background-color: var(--panel-white);
    transition: var(--transition);
}

.flagged-item:hover {
    transform: translateY(-2px);
    box-shadow: 0px 8px 25px rgba(0, 0, 0, 0.05);
    border-color: var(--primary);
}

.status-tag {
    padding: 8px 18px;
    border-radius: 10px;
    font-size: 0.75rem;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.status-tag.present { background: #E9FBF3; color: var(--success); }
.status-tag.manual { background: #F0F2FF; color: var(--primary); }

/* Tabs */
.tab-pane {
    display: none;
}
.tab-pane.active {
    display: block;
    animation: fadeIn 0.4s ease;
}

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

@media (max-width: 1200px) {
    main.dashboard-container { grid-template-columns: 1fr; }
    header { padding: 1rem 2rem; }
}