:root {
    --bg-dark: #0d0d14;
    --bg-primary: #12121c;
    --bg-secondary: #1a1a2e;
    --bg-card: #1e1e32;
    --bg-input: #14142a;
    --bg-hover: #252540;
    --border-primary: #2a2a44;
    --border-secondary: #3a3a5a;
    --border-accent: #EF5350;
    --text-primary: #f0f0f5;
    --text-secondary: #b0b0c8;
    --text-muted: #6e6e8a;
    --accent: #EF5350;
    --accent-dark: #C62828;
    --accent-light: #FF8A80;
    --accent-glow: rgba(239, 83, 80, 0.15);
    --accent-glow-strong: rgba(239, 83, 80, 0.3);
    --success: #4CAF50;
    --success-bg: rgba(76, 175, 80, 0.1);
    --danger: #EF5350;
    --info: #42A5F5;
    --warning: #FFD54F;
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 8px 40px rgba(0, 0, 0, 0.5);
    --shadow-glow: 0 0 30px rgba(239, 83, 80, 0.08);
    --transition-fast: 0.15s ease;
    --transition-normal: 0.25s ease;
    --transition-slow: 0.4s ease;
    --font-main: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
    font-family: var(--font-main);
    background: var(--bg-dark);
    min-height: 100vh;
    color: var(--text-primary);
    overflow-x: hidden;
}

.particles {
    position: fixed; top: 0; left: 0; width: 100%; height: 100%;
    pointer-events: none; z-index: 0; overflow: hidden;
}
.particle {
    position: absolute;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(239, 83, 80, 0.3), transparent);
    animation: particleFloat linear infinite;
}
@keyframes particleFloat {
    0% { transform: translateY(100vh) scale(0); opacity: 0; }
    10% { opacity: 1; }
    90% { opacity: 1; }
    100% { transform: translateY(-20vh) scale(1); opacity: 0; }
}

.toast-container {
    position: fixed; top: 20px; right: 20px; z-index: 10000;
    display: flex; flex-direction: column; gap: 10px;
}
.toast {
    padding: 14px 24px; border-radius: var(--radius-md);
    font-size: 14px; font-weight: 500; color: #fff;
    backdrop-filter: blur(10px); animation: toastIn 0.3s ease;
    cursor: pointer; max-width: 400px; box-shadow: var(--shadow-md);
}
.toast-info { background: rgba(66, 165, 245, 0.9); }
.toast-success { background: rgba(76, 175, 80, 0.9); }
.toast-error { background: rgba(239, 83, 80, 0.9); }
.toast-warning { background: rgba(255, 213, 79, 0.9); color: #333; }
.toast.hiding { animation: toastOut 0.3s ease forwards; }
@keyframes toastIn { from { transform: translateX(100%); opacity: 0; } to { transform: translateX(0); opacity: 1; } }
@keyframes toastOut { from { opacity: 1; } to { opacity: 0; transform: translateX(40px); } }

.auth-section {
    min-height: 100vh; display: flex; align-items: center; justify-content: center;
    background: linear-gradient(135deg, #0d0d14 0%, #1a0a0a 30%, #2d1b2e 60%, #1a1a2e 100%);
    position: relative; z-index: 1; padding: 20px;
}
.auth-card {
    background: rgba(30, 30, 50, 0.7); backdrop-filter: blur(20px);
    border: 1px solid rgba(239, 83, 80, 0.15); border-radius: var(--radius-xl);
    padding: 48px 40px; max-width: 440px; width: 100%;
    box-shadow: 0 16px 60px rgba(0, 0, 0, 0.5), 0 0 60px rgba(239, 83, 80, 0.05);
    animation: scaleIn 0.5s ease;
}
.auth-logo { text-align: center; margin-bottom: 32px; }
.auth-logo h1 {
    font-size: 2.2em; font-weight: 800; color: var(--text-primary);
    letter-spacing: -0.5px;
}
.auth-logo h1 span { color: var(--accent); }
.auth-subtitle { color: var(--text-muted); font-size: 14px; margin-top: 6px; letter-spacing: 2px; text-transform: uppercase; }

.auth-form h2 { font-size: 1.4em; margin-bottom: 6px; color: var(--text-primary); }
.auth-desc { color: var(--text-secondary); font-size: 14px; margin-bottom: 24px; }
.input-group { margin-bottom: 20px; }
.input-group label {
    display: block; font-size: 13px; font-weight: 600; color: var(--text-secondary);
    margin-bottom: 6px; text-transform: uppercase; letter-spacing: 0.5px;
}
.input-group input {
    width: 100%; padding: 14px 16px; border: 1px solid var(--border-primary);
    border-radius: var(--radius-md); background: var(--bg-input); color: var(--text-primary);
    font-size: 15px; font-family: var(--font-main); outline: none; transition: all var(--transition-normal);
}
.input-group input:focus {
    border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-glow);
}
.input-group input::placeholder { color: var(--text-muted); }
.input-hint { color: var(--warning); font-size: 12px; margin-top: 6px; line-height: 1.5; }
.auth-error { color: var(--accent); font-size: 13px; margin-bottom: 12px; min-height: 20px; }
.auth-btn {
    width: 100%; padding: 14px; border: none; border-radius: var(--radius-md);
    background: linear-gradient(135deg, var(--accent), var(--accent-dark));
    color: #fff; font-size: 16px; font-weight: 700; cursor: pointer;
    transition: all var(--transition-normal); font-family: var(--font-main);
    text-transform: uppercase; letter-spacing: 1px;
}
.auth-btn:hover { transform: translateY(-2px); box-shadow: 0 8px 30px rgba(239, 83, 80, 0.3); }
.auth-btn:active { transform: translateY(0); }
.auth-btn:disabled { opacity: 0.5; cursor: not-allowed; transform: none; }
.auth-switch { text-align: center; margin-top: 20px; color: var(--text-muted); font-size: 14px; }
.auth-switch a { color: var(--accent); text-decoration: none; font-weight: 600; }
.auth-switch a:hover { text-decoration: underline; }

.verify-timer { text-align: center; color: var(--accent-light); font-size: 14px; margin-bottom: 16px; font-weight: 500; }

.dashboard-section { position: relative; z-index: 1; min-height: 100vh; }

.dashboard-header {
    display: flex; justify-content: space-between; align-items: center;
    padding: 16px 32px;
    background: rgba(18, 18, 28, 0.9); backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-primary);
    position: sticky; top: 0; z-index: 100;
}
.header-title {
    font-size: 1.5em; font-weight: 800; color: var(--text-primary); letter-spacing: -0.5px;
}
.header-title span { color: var(--accent); }
.header-right { display: flex; align-items: center; gap: 12px; }
.user-info { display: flex; align-items: center; gap: 12px; }
.user-email { color: var(--text-secondary); font-size: 13px; }
.settings-btn {
    background: transparent; border: 1px solid var(--border-primary); border-radius: var(--radius-sm);
    padding: 6px 10px; cursor: pointer; font-size: 16px; transition: all var(--transition-fast);
}
.settings-btn:hover { border-color: var(--accent); background: var(--accent-glow); }
.logout-btn {
    padding: 8px 16px; border: 1px solid var(--accent); border-radius: var(--radius-sm);
    background: transparent; color: var(--accent); font-size: 13px; font-weight: 600;
    cursor: pointer; transition: all var(--transition-normal); font-family: var(--font-main);
    text-transform: uppercase; letter-spacing: 0.5px;
}
.logout-btn:hover { background: var(--accent); color: #fff; }

.settings-panel {
    background: var(--bg-card); border-bottom: 1px solid var(--border-primary);
    animation: slideDown 0.3s ease;
}
.settings-content { max-width: 600px; margin: 0 auto; padding: 24px 32px; }
.settings-content h3 { margin-bottom: 16px; font-size: 1.1em; }
.toggle-setting {
    display: flex; align-items: center; justify-content: space-between;
    padding: 12px 0; cursor: pointer; font-size: 14px; color: var(--text-secondary);
}
.toggle-setting input { display: none; }
.toggle-slider {
    width: 48px; height: 26px; background: var(--bg-hover); border-radius: 13px;
    position: relative; transition: all var(--transition-normal); flex-shrink: 0; margin-left: 16px;
}
.toggle-slider::after {
    content: ''; position: absolute; width: 20px; height: 20px; border-radius: 50%;
    background: var(--text-muted); top: 3px; left: 3px; transition: all var(--transition-normal);
}
.toggle-setting input:checked + .toggle-slider { background: var(--accent); }
.toggle-setting input:checked + .toggle-slider::after { left: 25px; background: #fff; }

.hero-section {
    background: linear-gradient(135deg, #1a0a0a 0%, var(--bg-secondary) 50%, #2d1b2e 100%);
    padding: 60px 32px; text-align: center;
    border-bottom: 1px solid var(--border-primary);
}
.hero-content { max-width: 700px; margin: 0 auto; }
.hero-content h2 {
    font-size: 2em; font-weight: 800; color: var(--text-primary);
    margin-bottom: 16px; letter-spacing: -0.5px;
}
.hero-content p { color: var(--text-secondary); font-size: 15px; line-height: 1.7; margin-bottom: 32px; }

.search-counter {
    display: inline-flex; align-items: center; gap: 16px;
    background: rgba(239, 83, 80, 0.08); border: 1px solid rgba(239, 83, 80, 0.2);
    border-radius: var(--radius-lg); padding: 16px 28px;
}
.counter-icon { font-size: 28px; }
.counter-text { text-align: left; }
.counter-label { display: block; font-size: 12px; color: var(--text-muted); text-transform: uppercase; letter-spacing: 1px; font-weight: 600; }
.counter-value { font-size: 18px; font-weight: 700; color: var(--accent); }
.counter-value span { font-size: 20px; }

/* Search section */
.search-section { padding: 40px 32px 32px; max-width: 700px; margin: 0 auto; }
.search-wrapper { position: relative; }
.search-input-container { position: relative; }

#searchInput {
    width: 100%; padding: 18px 24px; font-size: 16px;
    border: 2px solid var(--border-primary); border-radius: var(--radius-lg);
    background: var(--bg-input); color: var(--text-primary);
    font-family: var(--font-main); outline: none; transition: all var(--transition-normal);
}
#searchInput:focus { border-color: var(--accent); box-shadow: 0 0 0 4px var(--accent-glow), var(--shadow-glow); }
#searchInput::placeholder { color: var(--text-muted); }

.autocomplete-results {
    position: absolute; top: calc(100% + 8px); left: 0; right: 0;
    background: var(--bg-card); border: 1px solid var(--border-secondary);
    border-radius: var(--radius-md); box-shadow: var(--shadow-lg);
    display: none; overflow: hidden; z-index: 50; animation: slideDown 0.2s ease;
}
.autocomplete-results.active { display: block; }

.autocomplete-item {
    padding: 14px 20px; display: flex; align-items: center; gap: 14px;
    cursor: pointer; transition: all var(--transition-fast); border-bottom: 1px solid var(--border-primary);
}
.autocomplete-item:last-child { border-bottom: none; }
.autocomplete-item:hover { background: var(--bg-hover); }
.autocomplete-photo {
    width: 48px; height: 48px; border-radius: var(--radius-sm);
    border: 1px solid var(--border-secondary); object-fit: cover; flex-shrink: 0;
    background: var(--bg-input);
}
.autocomplete-text { flex: 1; }
.autocomplete-name { font-weight: 600; font-size: 15px; color: var(--text-primary); }
.autocomplete-meta {
    font-size: 12px; color: var(--text-muted); margin-top: 2px;
    display: flex; gap: 8px; align-items: center;
}
.autocomplete-house {
    display: inline-block; padding: 2px 8px; border-radius: 10px;
    font-size: 11px; font-weight: 700; color: #1a1a2e;
}

.features-section {
    padding: 48px 32px; max-width: 900px; margin: 0 auto;
}
.features-title {
    font-size: 1.2em; color: var(--text-secondary); text-transform: uppercase;
    letter-spacing: 2px; margin-bottom: 24px; font-weight: 600;
}
.features-grid {
    display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 16px;
}
.feature-card {
    background: var(--bg-card); border: 1px solid var(--border-primary);
    border-radius: var(--radius-lg); padding: 28px 24px; cursor: pointer;
    transition: all var(--transition-normal); text-align: center;
}
.feature-card:hover {
    transform: translateY(-4px); border-color: var(--accent);
    box-shadow: var(--shadow-md), var(--shadow-glow);
}
.feature-icon { font-size: 32px; margin-bottom: 12px; }
.feature-card h4 { font-size: 15px; font-weight: 700; color: var(--text-primary); margin-bottom: 6px; }
.feature-card p { font-size: 13px; color: var(--text-muted); }

/* Footer */
.dashboard-footer {
    padding: 32px; text-align: center; border-top: 1px solid var(--border-primary);
    color: var(--text-muted); font-size: 13px;
}

.modal-overlay {
    position: fixed; top: 0; left: 0; width: 100%; height: 100%;
    background: rgba(0, 0, 0, 0.7); backdrop-filter: blur(8px);
    z-index: 1000; display: flex; align-items: center; justify-content: center;
    padding: 20px; animation: fadeIn 0.2s ease;
}
.modal-content {
    background: var(--bg-secondary); border: 1px solid var(--border-primary);
    border-radius: var(--radius-xl); padding: 36px; max-width: 800px; width: 100%;
    max-height: 85vh; overflow-y: auto; position: relative;
    box-shadow: var(--shadow-lg); animation: scaleIn 0.3s ease;
}
.modal-close {
    position: absolute; top: 16px; right: 20px; background: none; border: none;
    color: var(--text-muted); font-size: 28px; cursor: pointer; line-height: 1;
    transition: color var(--transition-fast); z-index: 10;
}
.modal-close:hover { color: var(--accent); }
.modal-content h2 { font-size: 1.5em; margin-bottom: 20px; color: var(--text-primary); }
.modal-content h3 { font-size: 1.2em; margin-bottom: 14px; color: var(--text-primary); }

.confirm-overlay {
    position: fixed; top: 0; left: 0; width: 100%; height: 100%;
    background: rgba(0, 0, 0, 0.75); backdrop-filter: blur(12px);
    z-index: 2000; display: flex; align-items: center; justify-content: center;
    padding: 20px; animation: fadeIn 0.2s ease;
}
.confirm-card {
    background: var(--bg-secondary); border: 1px solid var(--border-primary);
    border-radius: var(--radius-xl); padding: 40px; max-width: 420px; width: 100%;
    text-align: center; box-shadow: var(--shadow-lg), 0 0 60px rgba(239, 83, 80, 0.1);
    animation: scaleIn 0.3s ease;
}
.confirm-photo {
    width: 100px; height: 100px; border-radius: 50%; object-fit: cover;
    border: 3px solid var(--accent); margin: 0 auto 20px; display: block;
    background: var(--bg-input);
}
.confirm-name { font-size: 1.3em; font-weight: 700; margin-bottom: 6px; color: var(--text-primary); }
.confirm-house {
    display: inline-block; padding: 4px 14px; border-radius: 20px;
    font-size: 13px; font-weight: 700; margin-bottom: 16px;
}
.confirm-question { color: var(--text-secondary); font-size: 15px; margin-bottom: 8px; line-height: 1.5; }
.confirm-remaining { color: var(--accent); font-size: 14px; font-weight: 600; margin-bottom: 24px; }
.confirm-buttons { display: flex; gap: 12px; justify-content: center; }
.confirm-yes, .confirm-no, .confirm-close-btn {
    padding: 12px 32px; border-radius: var(--radius-md); border: none;
    font-size: 15px; font-weight: 700; cursor: pointer; font-family: var(--font-main);
    transition: all var(--transition-normal); text-transform: uppercase; letter-spacing: 0.5px;
}
.confirm-yes {
    background: linear-gradient(135deg, var(--accent), var(--accent-dark)); color: #fff;
}
.confirm-yes:hover { transform: translateY(-2px); box-shadow: 0 6px 20px rgba(239, 83, 80, 0.3); }
.confirm-no {
    background: transparent; color: var(--text-secondary); border: 1px solid var(--border-secondary);
}
.confirm-no:hover { border-color: var(--text-primary); color: var(--text-primary); }
.confirm-close-btn {
    background: var(--bg-hover); color: var(--text-secondary); border: 1px solid var(--border-secondary);
}
.confirm-close-btn:hover { border-color: var(--accent); color: var(--accent); }
.confirm-status { color: var(--text-secondary); font-size: 14px; margin-bottom: 20px; }
.confirm-status.sending { color: var(--warning); }
.confirm-status.sent { color: var(--success); }

.spinner { display: inline-block; width: 20px; height: 20px; border: 3px solid rgba(239, 83, 80, 0.2);
    border-top-color: var(--accent); border-radius: 50%; animation: spin 0.8s linear infinite; margin-right: 8px; vertical-align: middle; }
@keyframes spin { to { transform: rotate(360deg); } }

.whos-free-controls { display: flex; gap: 12px; margin-bottom: 24px; flex-wrap: wrap; }
.availability-select {
    padding: 10px 16px; background: var(--bg-input); color: var(--text-primary);
    border: 1px solid var(--border-primary); border-radius: var(--radius-md);
    font-family: var(--font-main); font-size: 14px; cursor: pointer;
    outline: none; transition: border-color var(--transition-fast);
}
.availability-select:focus { border-color: var(--accent); }
.availability-btn {
    padding: 10px 20px; background: linear-gradient(135deg, var(--accent), var(--accent-dark));
    color: #fff; border: none; border-radius: var(--radius-md);
    font-family: var(--font-main); font-size: 14px; font-weight: 600;
    cursor: pointer; transition: all var(--transition-normal);
}
.availability-btn:hover { transform: translateY(-2px); box-shadow: 0 6px 20px rgba(239, 83, 80, 0.3); }

.free-person-tag {
    display: inline-block; padding: 6px 12px;
    background: var(--bg-card); border: 1px solid var(--border-primary);
    border-radius: var(--radius-sm); cursor: pointer; white-space: nowrap;
    font-size: 13px; color: var(--text-secondary); transition: all var(--transition-fast);
}
.free-person-tag:hover { border-color: var(--accent); color: var(--text-primary); transform: translateY(-1px); }

.room-story-stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; margin: 20px 0; }
.stat-card-large {
    background: var(--bg-card); border: 1px solid var(--border-primary);
    border-radius: var(--radius-lg); padding: 20px; text-align: center;
}
.stat-card-large .stat-number { font-size: 2em; font-weight: 800; color: var(--accent); }
.stat-card-large .stat-label { font-size: 12px; color: var(--text-muted); text-transform: uppercase; letter-spacing: 1px; }

.room-timeline { display: grid; gap: 12px; }
.timeline-day {
    background: var(--bg-card); border-radius: var(--radius-md);
    padding: 14px; border: 1px solid var(--border-primary);
}
.timeline-day strong { color: var(--accent); font-size: 14px; display: block; margin-bottom: 8px; }
.timeline-period {
    display: inline-block; padding: 6px 12px; border-radius: var(--radius-sm);
    font-size: 12px; margin: 3px 4px;
}
.timeline-period.occupied { background: rgba(239, 83, 80, 0.15); color: var(--accent-light); border: 1px solid rgba(239, 83, 80, 0.3); }
.timeline-period.free { background: rgba(76, 175, 80, 0.1); color: var(--success); border: 1px solid rgba(76, 175, 80, 0.2); }

.ply-controls { display: flex; gap: 12px; margin-bottom: 24px; flex-wrap: wrap; }
.ply-input {
    flex: 1; min-width: 200px; padding: 12px 16px;
    background: var(--bg-input); color: var(--text-primary);
    border: 1px solid var(--border-primary); border-radius: var(--radius-md);
    font-family: var(--font-main); font-size: 14px; outline: none;
}
.ply-input:focus { border-color: var(--accent); }

.similar-person-item {
    padding: 12px 16px; background: var(--bg-card); border: 1px solid var(--border-primary);
    border-radius: var(--radius-sm); margin-bottom: 8px; cursor: pointer;
    transition: all var(--transition-fast); font-size: 14px; color: var(--text-secondary);
}
.similar-person-item:hover { border-color: var(--accent); color: var(--text-primary); transform: translateX(4px); }
.similar-person-item strong { color: var(--text-primary); }

@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }
@keyframes scaleIn { from { opacity: 0; transform: scale(0.92); } to { opacity: 1; transform: scale(1); } }
@keyframes slideDown { from { opacity: 0; transform: translateY(-10px); } to { opacity: 1; transform: translateY(0); } }
@keyframes fadeInUp { from { opacity: 0; transform: translateY(16px); } to { opacity: 1; transform: translateY(0); } }

::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: var(--bg-primary); }
::-webkit-scrollbar-thumb { background: var(--border-secondary); border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: var(--accent); }

@media (max-width: 768px) {
    .auth-card { padding: 32px 24px; }
    .dashboard-header { padding: 12px 16px; flex-wrap: wrap; gap: 10px; }
    .hero-section { padding: 40px 20px; }
    .hero-content h2 { font-size: 1.5em; }
    .search-section { padding: 24px 16px; }
    .features-section { padding: 32px 16px; }
    .features-grid { grid-template-columns: repeat(2, 1fr); gap: 10px; }
    .feature-card { padding: 20px 16px; }
    .modal-content { padding: 24px 20px; max-height: 90vh; }
    .confirm-card { padding: 28px 20px; }
    .room-story-stats { grid-template-columns: 1fr; }
    .whos-free-controls { flex-direction: column; }
}
@media (max-width: 480px) {
    .features-grid { grid-template-columns: 1fr; }
    .user-email { display: none; }
}

/* Admin UI Elements */
.admin-table { width: 100%; border-collapse: collapse; margin-top: 15px; color: var(--text-primary); text-align: left; }
.admin-table th, .admin-table td { padding: 10px; border-bottom: 1px solid var(--border-primary); vertical-align: middle; }
.admin-table th { color: var(--accent); font-weight: 600; font-size: 14px; }
.admin-table td { font-size: 14px; }
.admin-table td input { background: var(--bg-input); border: 1px solid var(--border-primary); color: var(--text-primary); padding: 5px 8px; border-radius: 4px; outline: none; transition: border-color var(--transition-fast); }
.admin-table td input:focus { border-color: var(--accent); }