/* 
   AP Mastery - Style inspired by giancarlosucks.lol 
   High-contrast, brutalist aesthetic.
*/

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

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

:root {
    --bg: #f8f9fc;
    --surface: #ffffff;
    --surface2: #f1f3f9;
    --border: #e2e8f0;
    --border2: #cbd5e1;
    --text: #1e293b;
    --muted: #64748b;
    --dim: #94a3b8;
    --accent: #3b82f6;
    
    /* Compatibility variables */
    --white: #ffffff;
    --gray-50: #f9fafb;
    --gray-100: #f3f4f6;
    --gray-200: #e5e7eb;
    --gray-300: #d1d5db;
    --gray-400: #9ca3af;
    --gray-500: #64748b; /* Mapped to var(--muted) */
    --gray-600: #4b5563;
    --gray-700: #374151;
    --gray-800: #1f2937;
    --gray-900: #1e293b; /* Mapped to var(--text) */
    
    /* Legacy color mappings */
    --primary-blue: #3b82f6;
    --primary-dark: #1d4ed8;
    --danger-red: #ef4444;
    --success-green: #22c55e;
    
    /* Functional colors */
    --primary: var(--accent);
    --success: #4ec97b;
    --danger: #ff6b6b;
    --warning: #ffcc33;
    
    /* Shadows */
    --shadow-sm: 0 4px 12px rgba(0,0,0,0.1);
    --shadow-lg: 0 8px 32px rgba(0,0,0,0.15);
    
    --border-radius: 12px;
}

html { 
    scroll-behavior: smooth; 
}

body {
    background: var(--bg);
    color: var(--text);
    font-family: 'Barlow', sans-serif;
    font-size: 16px;
    line-height: 1.5;
    min-height: 100vh;
}

/* Typography */
h1, h2, h3, h4, .brand-font {
    font-family: 'Barlow Condensed', sans-serif;
    text-transform: uppercase;
    letter-spacing: -0.01em;
    font-weight: 800;
    color: var(--text);
}

/* Header */
.header {
    background: var(--bg);
    padding: 3rem 2rem 2rem;
    text-align: center;
    position: relative;
    overflow: hidden;
    border-bottom: 1px solid var(--border);
}

.header::before {
    content: '';
    position: absolute;
    top: -50px; left: 50%;
    transform: translateX(-50%);
    width: 600px; height: 300px;
    background: radial-gradient(ellipse at center, rgba(143,166,200,0.05) 0%, transparent 70%);
    pointer-events: none;
}

.logo h1 {
    font-size: clamp(3rem, 10vw, 5rem);
    line-height: 0.85;
    margin-bottom: 0.5rem;
}

.logo span {
    font-family: 'Barlow Condensed', sans-serif;
    color: var(--accent);
    font-size: 0.9rem;
    font-weight: 700;
    letter-spacing: 0.3em;
    text-transform: uppercase;
}

/* Layout */
.container {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

.main {
    flex: 1;
    max-width: 900px;
    width: 100%;
    margin: 0 auto;
    padding: 2.5rem 1.5rem;
}

/* Sections */
.hero-section {
    text-align: center;
    margin-bottom: 3rem;
}

.hero-section h2 {
    font-size: clamp(2rem, 6vw, 3.5rem);
    margin-bottom: 1rem;
    line-height: 0.9;
}

.hero-section p {
    color: var(--muted);
    font-size: 1.1rem;
    max-width: 600px;
    margin: 0 auto;
}

/* Cards & Containers */
.auth-container, .card, .form-container {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 14px;
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: transform 0.2s, border-color 0.2s;
}

.card {
    padding: 1.5rem;
}

.card:hover {
    border-color: var(--border2);
    transform: translateY(-2px);
}

/* Tabs */
.auth-tabs {
    display: flex;
    background: var(--surface2);
    border-bottom: 1px solid var(--border);
}

.tab {
    flex: 1;
    padding: 1.25rem;
    border: none;
    background: none;
    cursor: pointer;
    font-family: 'Barlow Condensed', sans-serif;
    font-weight: 700;
    font-size: 1rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--muted);
    transition: all 0.2s;
}

.tab.active {
    background: var(--surface);
    color: var(--accent);
    box-shadow: inset 0 -3px 0 var(--accent);
}

.tab:hover:not(.active) {
    color: var(--text);
    background: rgba(255,255,255,0.03);
}

/* Forms */
.form-container {
    padding: 2rem;
    display: none;
}

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

.auth-form {
    display: none;
}

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

.form-switch {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 2rem;
    background: var(--surface2);
    padding: 0.3rem;
    border-radius: 10px;
}

.switch-btn {
    flex: 1;
    padding: 0.75rem;
    border: none;
    background: none;
    cursor: pointer;
    font-family: 'Barlow Condensed', sans-serif;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--muted);
    border-radius: 8px;
    transition: all 0.2s;
}

.switch-btn.active {
    background: var(--accent);
    color: var(--bg);
}

.auth-form h3 {
    margin-bottom: 1.5rem;
    font-size: 1.75rem;
    text-align: center;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    font-family: 'Barlow Condensed', sans-serif;
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--muted);
    margin-bottom: 0.5rem;
}

.form-group input {
    width: 100%;
    background: var(--surface);
    border: 1px solid var(--border2);
    border-radius: 8px;
    padding: 0.85rem 1rem;
    color: var(--text);
    font-family: 'Barlow', sans-serif;
    font-size: 1rem;
    transition: border-color 0.2s, box-shadow 0.2s;
}

.form-group input:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(143, 166, 200, 0.1);
}

.form-group small {
    display: block;
    margin-top: 0.5rem;
    font-size: 0.8rem;
    color: var(--dim);
}

/* Buttons */
.btn-primary {
    width: 100%;
    padding: 1rem;
    background: transparent;
    border: 2px solid var(--accent);
    color: var(--accent);
    font-family: 'Barlow Condensed', sans-serif;
    font-weight: 800;
    font-size: 1.1rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    border-radius: 10px;
    cursor: pointer;
    transition: all 0.2s;
    margin-top: 0.5rem;
}

.btn-primary:hover {
    background: var(--accent);
    color: var(--bg);
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(143, 166, 200, 0.3);
}

.btn-primary:active {
    transform: translateY(0);
}

.btn-primary:disabled {
    border-color: var(--dim);
    color: var(--dim);
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
}

.btn-secondary {
    width: 100%;
    padding: 1rem;
    background: var(--surface2);
    border: 2px solid var(--border2);
    color: var(--text);
    font-family: 'Barlow Condensed', sans-serif;
    font-weight: 800;
    font-size: 1.1rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    border-radius: 10px;
    cursor: pointer;
    transition: all 0.2s;
    margin-top: 0.5rem;
}

.btn-secondary:hover {
    background: var(--border);
    border-color: var(--border2);
    transform: translateY(-2px);
}

.btn-secondary:active {
    transform: translateY(0);
}

.btn-secondary:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none;
}

.btn-google {
    width: 100%;
    padding: 0.85rem;
    background: #ffffff;
    border: 1px solid var(--border2);
    color: var(--text);
    font-family: 'Barlow Condensed', sans-serif;
    font-weight: 700;
    font-size: 1rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    border-radius: 10px;
    cursor: pointer;
    transition: all 0.2s;
    margin-top: 1rem;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
}

.btn-google:hover {
    background: var(--surface2);
    border-color: var(--dim);
}

.btn-google img {
    width: 18px;
    height: 18px;
}

/* Features */
.features-section {
    margin-top: 4rem;
}

.features-section h3 {
    text-align: center;
    margin-bottom: 2rem;
    font-size: 1.5rem;
    letter-spacing: 0.2em;
    color: var(--muted);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
}

.feature {
    background: var(--surface);
    border: 1px solid var(--border);
    padding: 1.5rem;
    border-radius: 14px;
    text-align: center;
}

.feature h4 {
    color: var(--accent);
    font-size: 1.25rem;
    margin-bottom: 0.75rem;
}

.feature p {
    font-size: 0.9rem;
    color: var(--muted);
}

/* Footer */
.footer {
    text-align: center;
    padding: 3rem 1.5rem;
    border-top: 1px solid var(--border);
    background: var(--bg);
}

.footer p {
    font-family: 'Barlow Condensed', sans-serif;
    font-size: 0.7rem;
    font-weight: 700;
    letter-spacing: 0.3em;
    text-transform: uppercase;
    color: var(--muted);
}

/* Loading Overlay */
.loading-overlay {
    position: fixed;
    top: 0; left: 0;
    width: 100%; height: 100%;
    background: rgba(7, 7, 15, 0.9);
    display: none;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    z-index: 9999;
}

.loading-overlay.active {
    display: flex;
}

.spinner {
    width: 40px;
    height: 40px;
    border: 3px solid var(--border2);
    border-top-color: var(--accent);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
    margin-bottom: 1.5rem;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* Toast Notifications */
.toast-container {
    position: fixed;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
    z-index: 10000;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    width: calc(100% - 3rem);
    max-width: 400px;
}

.toast {
    background: var(--surface2);
    border: 1px solid var(--border2);
    color: var(--text);
    padding: 1rem 1.25rem;
    border-radius: 12px;
    font-size: 0.9rem;
    box-shadow: var(--shadow-lg);
    animation: toastSlideUp 0.4s cubic-bezier(0.34, 1.5, 0.64, 1);
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

@keyframes toastSlideUp {
    from { transform: translateY(100px); opacity: 0; }
    to { transform: translateY(0); opacity: 1; }
}

.toast.success { border-left: 4px solid var(--success); }
.toast.error { border-left: 4px solid var(--danger); }

/* Progress Components */
.progress-bar {
    height: 6px;
    background: var(--dim);
    border-radius: 3px;
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    background: var(--accent);
    transition: width 0.6s cubic-bezier(0.34, 1.2, 0.64, 1);
}

.progress-fill.success { background: var(--success); }

/* Status Badges */
.status-badge {
    display: inline-block;
    padding: 0.2rem 0.6rem;
    border-radius: 4px;
    font-family: 'Barlow Condensed', sans-serif;
    font-size: 0.65rem;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

.status-badge.locked { background: var(--surface2); color: var(--dim); }
.status-badge.available { background: var(--dim); color: var(--accent); }
.status-badge.passed { background: var(--success); color: var(--bg); }

/* Tables */
.table-wrap {
    overflow-x: auto;
    border: 1px solid var(--border);
    border-radius: 14px;
    background: var(--surface);
}

table {
    width: 100%;
    border-collapse: collapse;
}

th {
    padding: 1rem;
    font-family: 'Barlow Condensed', sans-serif;
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--muted);
    border-bottom: 1px solid var(--border);
    text-align: left;
}

td {
    padding: 1rem;
    border-bottom: 1px solid var(--border);
    color: var(--text);
}

tr:last-child td {
    border-bottom: none;
}

tr:hover {
    background: rgba(255, 255, 255, 0.02);
}

/* Utilities */
.hidden { display: none !important; }
.text-center { text-align: center; }
.mb-4 { margin-bottom: 1.5rem; }
.mt-4 { margin-top: 1.5rem; }

/* Responsive */
@media (max-width: 640px) {
    .header { padding: 2rem 1rem; }
    .logo h1 { font-size: 3rem; }
    .main { padding: 1.5rem 1rem; }
    .hero-section h2 { font-size: 2rem; }
}