/* 
 * VR Education Discovery - Main Stylesheet
 * Premium Design with Glassmorphism & High Contrast
 */

:root {
    /* Color Palette - Premium Tech */
    --primary: #6366f1;
    /* Indigo 500 */
    --primary-dark: #4f46e5;
    /* Indigo 600 */
    --primary-light: #818cf8;
    /* Indigo 400 */
    --secondary: #ec4899;
    /* Pink 500 */
    --accent: #06b6d4;
    /* Cyan 500 */

    --bg-dark: #0f172a;
    /* Slate 900 */
    --bg-card: rgba(30, 41, 59, 0.7);
    /* Slate 800 + Alpha */
    --bg-overlay: rgba(15, 23, 42, 0.9);

    --text-main: #f8fafc;
    /* Slate 50 */
    --text-muted: #94a3b8;
    /* Slate 400 */

    --border: rgba(148, 163, 184, 0.1);

    /* Spacing & Radius */
    --radius-lg: 16px;
    --radius-md: 8px;
    --radius-sm: 4px;

    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 20px 25px -5px rgba(0, 0, 0, 0.2), 0 10px 10px -5px rgba(0, 0, 0, 0.1);
    --shadow-glow: 0 0 15px rgba(99, 102, 241, 0.3);
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: 'Outfit', sans-serif;
    background-color: var(--bg-dark);
    color: var(--text-main);
    line-height: 1.6;
    overflow-x: hidden;
    min-height: 100vh;
    background-image:
        radial-gradient(circle at 15% 50%, rgba(99, 102, 241, 0.15) 0%, transparent 25%),
        radial-gradient(circle at 85% 30%, rgba(236, 72, 153, 0.15) 0%, transparent 25%);
}

/* =========================================
   Typography
   ========================================= */
h1,
h2,
h3,
h4 {
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 1rem;
    color: #fff;
}

h1 {
    font-size: 2.5rem;
    letter-spacing: -0.02em;
}

h2 {
    font-size: 1.8rem;
}

h3 {
    font-size: 1.4rem;
    color: var(--primary-light);
}

p {
    margin-bottom: 1.5rem;
    color: var(--text-muted);
}

/* =========================================
   Components
   ========================================= */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.75rem 1.5rem;
    border-radius: var(--radius-md);
    font-weight: 600;
    text-decoration: none;
    transition: all 0.2s ease;
    border: none;
    cursor: pointer;
    font-size: 1rem;
}

.btn-block {
    width: 100%;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: white;
    box-shadow: var(--shadow-glow);
}

.btn-primary:hover {
    transform: translateY(-1px);
    box-shadow: 0 0 20px rgba(99, 102, 241, 0.5);
}

.btn-primary:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.05);
    color: var(--text-main);
    border: 1px solid var(--border);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.1);
}

.toast {
    position: fixed;
    top: 20px;
    right: 20px;
    background: var(--bg-card);
    padding: 1rem 1.5rem;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--border);
    backdrop-filter: blur(10px);
    z-index: 9999;
    transform: translateX(120%);
    transition: transform 0.3s ease;
}

.toast.show {
    transform: translateX(0);
}

.toast.success {
    border-left: 4px solid #10b981;
}

.toast.error {
    border-left: 4px solid #ef4444;
}

/* =========================================
   Layout: Landing Page
   ========================================= */
.landing-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.landing-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 4rem;
}

.logo {
    height: 40px;
}

.hero-section {
    text-align: center;
    flex-grow: 1;
}

.hero-section h1 {
    font-size: 3.5rem;
    background: linear-gradient(to right, #fff, var(--primary-light));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: 0.5rem;
}

.subtitle {
    font-size: 1.25rem;
    max-width: 600px;
    margin: 0 auto 3rem;
}

.action-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    max-width: 900px;
    margin: 0 auto;
}

.card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 2rem;
    text-align: left;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    backdrop-filter: blur(10px);
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-glow);
    border-color: rgba(99, 102, 241, 0.3);
}

.card-icon {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.form-group {
    margin-bottom: 1rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-size: 0.9rem;
    color: var(--text-muted);
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 0.75rem;
    background: rgba(0, 0, 0, 0.2);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    color: #fff;
    font-family: inherit;
    font-size: 1rem;
    transition: border-color 0.2s;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 2px rgba(99, 102, 241, 0.2);
}

/* =========================================
   Tooltips
   ========================================= */
.form-label-wrapper {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 0.5rem;
}

.form-tooltip {
    position: relative;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 18px;
    height: 18px;
    background: rgba(255, 255, 255, 0.1);
    color: var(--text-muted);
    border-radius: 50%;
    font-size: 0.75rem;
    cursor: help;
    transition: all 0.2s;
}

.form-tooltip:hover {
    background: var(--primary);
    color: white;
}

.tooltip-content {
    position: absolute;
    bottom: 140%;
    left: 50%;
    transform: translateX(-50%);
    width: 250px;
    background: var(--bg-dark);
    color: #fff;
    padding: 0.75rem;
    border-radius: var(--radius-sm);
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--border);
    font-size: 0.85rem;
    font-weight: 400;
    line-height: 1.4;
    visibility: hidden;
    opacity: 0;
    transition: all 0.2s;
    z-index: 50;
    pointer-events: none;
    text-align: center;
}

.tooltip-content::after {
    content: '';
    position: absolute;
    top: 100%;
    left: 50%;
    margin-left: -6px;
    border-width: 6px;
    border-style: solid;
    border-color: var(--bg-dark) transparent transparent transparent;
}

.form-tooltip:hover .tooltip-content {
    visibility: visible;
    opacity: 1;
    transform: translateX(-50%) translateY(-5px);
}

/* =========================================
   Layout: Form Wizard
   ========================================= */
.progress-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: 70px;
    background: rgba(15, 23, 42, 0.85);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border);
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 2rem;
}

.progress-container {
    flex-grow: 1;
    max-width: 600px;
    margin-right: 2rem;
}

.progress-info {
    display: flex;
    justify-content: space-between;
    font-size: 0.85rem;
    margin-bottom: 4px;
    color: var(--text-muted);
    font-weight: 500;
}

.progress-bar-track {
    height: 6px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 3px;
    overflow: hidden;
}

.progress-bar-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--primary), var(--secondary));
    width: 0%;
    transition: width 0.5s ease;
}

.user-controls {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.user-email {
    font-size: 0.9rem;
    color: var(--text-main);
}

.btn-logout {
    font-size: 0.8rem;
    color: var(--text-muted);
    text-decoration: none;
    padding: 0.4rem 0.8rem;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    transition: all 0.2s;
}

.btn-logout:hover {
    border-color: var(--text-muted);
    color: #fff;
}

.main-container {
    display: flex;
    min-height: 100vh;
    padding-top: 70px;
    /* Offset for fixed header */
}

.form-sidebar {
    width: 280px;
    background: rgba(15, 23, 42, 0.5);
    border-right: 1px solid var(--border);
    padding: 2rem;
    display: none;
    /* Hidden on mobile by default */
}

@media (min-width: 1024px) {
    .form-sidebar {
        display: block;
        position: fixed;
        bottom: 0;
        top: 70px;
    }

    .form-content {
        margin-left: 280px;
    }
}

.step-nav {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.step-item {
    display: flex;
    align-items: center;
    padding: 0.75rem 1rem;
    border-radius: var(--radius-md);
    cursor: pointer;
    color: var(--text-muted);
    transition: all 0.2s;
}

.step-item.active {
    background: rgba(99, 102, 241, 0.1);
    color: var(--primary-light);
    font-weight: 600;
}

.step-item.completed {
    color: #10b981;
}

.step-item.disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.step-num {
    width: 24px;
    height: 24px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.8rem;
    margin-right: 10px;
}

.active .step-num {
    background: var(--primary);
    color: white;
}

.completed .step-num {
    background: #10b981;
    color: white;
}

.form-content {
    flex-grow: 1;
    padding: 3rem 2rem;
    max-width: 900px;
    margin: 0 auto;
    width: 100%;
}

.form-section {
    display: none;
    animation: fadeIn 0.4s ease;
}

.form-section.active {
    display: block;
}

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

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.grid-2 {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
}

.grid-3 {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    gap: 1.5rem;
}

@media (max-width: 768px) {

    .grid-2,
    .grid-3 {
        grid-template-columns: 1fr;
    }

    .landing-header {
        flex-direction: column;
        gap: 1rem;
    }
}

.form-actions {
    margin-top: 3rem;
    display: flex;
    justify-content: space-between;
    border-top: 1px solid var(--border);
    padding-top: 2rem;
}

.autosave-status {
    position: fixed;
    bottom: 20px;
    right: 20px;
    font-size: 0.8rem;
    color: var(--text-muted);
    background: rgba(0, 0, 0, 0.5);
    padding: 5px 10px;
    border-radius: 4px;
    opacity: 0;
    transition: opacity 0.3s;
}

.autosave-status.show {
    opacity: 1;
}