/* ============================================
   FitNova — Premium Dark Athletic Design System
   ============================================ */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800;900&display=swap');

:root {
    --dark-bg: #0a0a0f;
    --charcoal: #13131a;
    --card-bg: #1a1a24;
    --card-border: rgba(212, 175, 55, 0.12);
    --gold: #d4af37;
    --gold-hover: #f1c40f;
    --gold-glow: rgba(212, 175, 55, 0.25);
    --gold-gradient: linear-gradient(135deg, #d4af37, #f1c40f, #d4af37);
    --text-light: #eaeaea;
    --text-muted: #d1d1e0;
    --accent-green: #2ecc71;
    --accent-blue: #3498db;
    --accent-red: #e74c3c;
    --radius: 16px;
    --radius-sm: 10px;
    --transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ---- Reset & Base ---- */
*, *::before, *::after { box-sizing: border-box; }

body {
    background-color: var(--dark-bg);
    color: var(--text-light);
    font-family: 'Inter', system-ui, -apple-system, sans-serif;
    min-height: 100vh;
    overflow-x: hidden;
    position: relative;
}

body::before {
    content: '';
    position: fixed;
    inset: 0;
    background:
        radial-gradient(ellipse 600px 400px at 10% 20%, rgba(212,175,55,0.04) 0%, transparent 70%),
        radial-gradient(ellipse 500px 500px at 90% 80%, rgba(212,175,55,0.03) 0%, transparent 70%);
    pointer-events: none;
    z-index: 0;
}

body > * { position: relative; z-index: 1; }

::selection {
    background: var(--gold);
    color: #000;
}

/* ---- Scrollbar ---- */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--dark-bg); }
::-webkit-scrollbar-thumb { background: var(--gold); border-radius: 3px; }

/* ---- Utility ---- */
.text-gold { color: var(--gold) !important; }
.border-gold { border: 1px solid var(--gold) !important; }
.text-muted { color: var(--text-muted) !important; }

/* ---- Navbar ---- */
.navbar {
    background: rgba(0, 0, 0, 0.85) !important;
    backdrop-filter: blur(20px) saturate(1.4);
    -webkit-backdrop-filter: blur(20px) saturate(1.4);
    border-bottom: 1px solid rgba(212,175,55,0.2);
    padding: 0.9rem 0;
    transition: var(--transition);
}

.navbar-brand {
    font-size: 1.5rem;
    font-weight: 800;
    letter-spacing: 2px;
    background: var(--gold-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    transition: var(--transition);
}
.navbar-brand span {
    -webkit-text-fill-color: #fff;
}
.navbar-brand:hover { transform: scale(1.05); filter: brightness(1.2); }

.navbar .nav-link {
    font-weight: 600;
    font-size: 0.78rem;
    letter-spacing: 1.5px;
    padding: 6px 16px !important;
    border-radius: 6px;
    transition: var(--transition);
    position: relative;
}
.navbar .nav-link.text-gold:hover,
.navbar .nav-link.text-white:hover {
    background: rgba(212,175,55,0.12);
    color: var(--gold-hover) !important;
    transform: translateY(-1px);
}

/* ---- Cards ---- */
.card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: var(--radius);
    color: var(--text-light);
    transition: var(--transition);
    overflow: hidden;
}
.card:hover {
    border-color: rgba(212,175,55,0.3);
    transform: translateY(-4px);
    box-shadow: 0 12px 40px rgba(0,0,0,0.4), 0 0 30px var(--gold-glow);
}

.card-body { padding: 1.5rem; }

/* ---- Glassmorphism Card Variant ---- */
.glass-card {
    background: rgba(26, 26, 36, 0.7);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid rgba(212,175,55,0.15);
    border-radius: var(--radius);
}

/* ---- Stat Cards ---- */
.stat-card {
    background: linear-gradient(145deg, #13131a 0%, #1a1a24 100%);
    border: 1px solid rgba(255,255,255,0.06);
    border-radius: var(--radius);
    padding: 1.8rem 1.5rem;
    text-align: center;
    position: relative;
    overflow: hidden;
    transition: var(--transition);
}
.stat-card::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 3px;
    background: var(--gold-gradient);
    opacity: 0;
    transition: var(--transition);
}
.stat-card:hover::before { opacity: 1; }
.stat-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 16px 48px rgba(0,0,0,0.5);
    border-color: rgba(212,175,55,0.2);
}
.stat-card .stat-icon {
    font-size: 1.8rem;
    margin-bottom: 0.6rem;
    display: block;
    opacity: 0.8;
}
.stat-card h2, .stat-card .stat-value {
    font-size: 2rem;
    font-weight: 800;
    margin-bottom: 0.3rem;
}
.stat-card p, .stat-card .stat-label {
    font-size: 0.7rem;
    letter-spacing: 2px;
    text-transform: uppercase;
    color: var(--text-muted);
    margin: 0;
    font-weight: 600;
}

/* ---- Buttons ---- */
.btn-primary, .btn-warning {
    background: var(--gold-gradient);
    background-size: 200% auto;
    border: none;
    color: #000;
    font-weight: 700;
    font-size: 0.85rem;
    letter-spacing: 0.8px;
    padding: 10px 24px;
    border-radius: var(--radius-sm);
    transition: var(--transition);
    text-transform: uppercase;
}
.btn-primary:hover, .btn-warning:hover {
    background-position: right center;
    color: #000;
    transform: translateY(-2px);
    box-shadow: 0 6px 24px var(--gold-glow);
}
.btn-primary:active, .btn-warning:active {
    transform: translateY(0);
}

.btn-outline-warning {
    color: var(--gold);
    border-color: var(--gold);
    font-weight: 600;
    font-size: 0.8rem;
    letter-spacing: 0.5px;
    border-radius: var(--radius-sm);
    transition: var(--transition);
}
.btn-outline-warning:hover {
    background: var(--gold);
    color: #000;
    transform: translateY(-2px);
    box-shadow: 0 4px 16px var(--gold-glow);
}

.btn-outline-secondary {
    color: var(--text-muted);
    border-color: rgba(255,255,255,0.1);
    border-radius: var(--radius-sm);
    font-weight: 600;
    font-size: 0.8rem;
    transition: var(--transition);
}
.btn-outline-secondary:hover {
    background: rgba(255,255,255,0.08);
    color: #fff;
    border-color: rgba(255,255,255,0.2);
}

.btn-outline-danger {
    border-radius: var(--radius-sm);
    font-weight: 600;
    transition: var(--transition);
}
.btn-outline-danger:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 16px rgba(231,76,60,0.25);
}

.btn-success {
    background: var(--accent-green);
    border: none;
    font-weight: 700;
    border-radius: var(--radius-sm);
    transition: var(--transition);
}
.btn-success:hover { transform: translateY(-2px); box-shadow: 0 4px 16px rgba(46,204,113,0.3); }

.btn-danger {
    font-weight: 700;
    border-radius: var(--radius-sm);
    transition: var(--transition);
}
.btn-danger:hover { transform: translateY(-2px); }

.btn-link { text-decoration: none; transition: var(--transition); }
.btn-link:hover { transform: translateY(-1px); }

/* ---- Forms ---- */
.form-control, .form-select {
    background-color: rgba(15, 15, 22, 0.8);
    border: 1px solid rgba(255,255,255,0.08);
    color: #fff;
    border-radius: var(--radius-sm);
    padding: 12px 16px;
    font-size: 0.9rem;
    transition: var(--transition);
}
.form-control:focus, .form-select:focus {
    background-color: rgba(20, 20, 30, 0.9);
    border-color: var(--gold);
    color: #fff;
    box-shadow: 0 0 0 3px var(--gold-glow);
}
.form-control::placeholder { color: rgba(255,255,255,0.65); }
.form-label {
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 1px;
    text-transform: uppercase;
    color: #e0e0ed;
    margin-bottom: 0.4rem;
}

select.form-control option {
    background: #1a1a24;
    color: #fff;
}

/* ---- Tables ---- */
.table-dark, .table {
    --bs-table-bg: transparent;
    --bs-table-color: var(--text-light);
    --bs-table-hover-bg: rgba(212,175,55,0.06);
    --bs-table-border-color: rgba(255,255,255,0.05);
    font-size: 0.88rem;
}
.table thead th {
    background: rgba(212,175,55,0.08);
    color: var(--gold);
    font-size: 0.72rem;
    font-weight: 700;
    letter-spacing: 1.5px;
    text-transform: uppercase;
    padding: 14px 16px;
    border-bottom: 2px solid rgba(212,175,55,0.15);
}
.table tbody td {
    padding: 14px 16px;
    vertical-align: middle;
}
.table tbody tr {
    transition: var(--transition);
}
.table-hover tbody tr:hover {
    background: rgba(212,175,55,0.06) !important;
}

/* ---- Badges ---- */
.badge {
    font-size: 0.68rem;
    font-weight: 700;
    letter-spacing: 0.8px;
    padding: 6px 12px;
    border-radius: 6px;
    text-transform: uppercase;
}
.badge.bg-success { background: rgba(46,204,113,0.15) !important; color: var(--accent-green) !important; }
.badge.bg-warning { background: rgba(212,175,55,0.15) !important; color: var(--gold) !important; }
.badge.bg-danger { background: rgba(231,76,60,0.15) !important; color: var(--accent-red) !important; }
.badge.bg-secondary { background: rgba(255,255,255,0.08) !important; color: var(--text-muted) !important; }
.badge.bg-info { background: rgba(52,152,219,0.15) !important; color: var(--accent-blue) !important; }

/* ---- Alerts ---- */
.alert {
    border-radius: var(--radius-sm);
    font-size: 0.85rem;
    font-weight: 500;
    border: none;
    backdrop-filter: blur(8px);
}
.alert-warning {
    background: rgba(212,175,55,0.12);
    color: var(--gold);
    border-left: 3px solid var(--gold);
}

/* ---- Hero / Jumbotron ---- */
.hero-section {
    background: linear-gradient(145deg, #13131a 0%, #1a1a24 50%, #13131a 100%);
    border: 1px solid rgba(212,175,55,0.12);
    border-radius: var(--radius);
    padding: 3rem;
    position: relative;
    overflow: hidden;
}
.hero-section::after {
    content: '';
    position: absolute;
    top: -50%; right: -20%;
    width: 400px; height: 400px;
    background: radial-gradient(circle, rgba(212,175,55,0.06) 0%, transparent 70%);
    pointer-events: none;
}

/* ---- List Groups ---- */
.list-group-item {
    background: rgba(26, 26, 36, 0.6);
    border: 1px solid rgba(255,255,255,0.05);
    color: var(--text-light);
    padding: 14px 18px;
    transition: var(--transition);
    border-radius: 0;
}
.list-group-item:first-child { border-radius: var(--radius-sm) var(--radius-sm) 0 0; }
.list-group-item:last-child { border-radius: 0 0 var(--radius-sm) var(--radius-sm); }
.list-group-item:hover {
    background: rgba(212,175,55,0.06);
    border-color: rgba(212,175,55,0.12);
}

/* ---- Section Headings ---- */
h1, h2, h3, h4, h5 { font-weight: 700; }

.section-title {
    font-weight: 800;
    letter-spacing: 1px;
    position: relative;
    display: inline-block;
    padding-bottom: 8px;
}
.section-title::after {
    content: '';
    position: absolute;
    bottom: 0; left: 0;
    width: 40px; height: 3px;
    background: var(--gold-gradient);
    border-radius: 2px;
}

hr {
    border-color: rgba(255,255,255,0.06);
    opacity: 1;
}

/* ---- Auth Cards (Login/Register) ---- */
.auth-card {
    background: linear-gradient(160deg, rgba(26,26,36,0.9) 0%, rgba(20,20,28,0.95) 100%);
    border: 1px solid rgba(212,175,55,0.15);
    border-radius: 20px;
    padding: 2.5rem;
    position: relative;
    overflow: hidden;
}
.auth-card::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 3px;
    background: var(--gold-gradient);
}
.auth-card::after {
    content: '';
    position: absolute;
    bottom: -100px; right: -100px;
    width: 250px; height: 250px;
    background: radial-gradient(circle, rgba(212,175,55,0.05) 0%, transparent 70%);
    pointer-events: none;
}

/* ---- Animations ---- */
@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(24px); }
    to { opacity: 1; transform: translateY(0); }
}
@keyframes shimmer {
    0% { background-position: -200% center; }
    100% { background-position: 200% center; }
}
@keyframes pulse-gold {
    0%, 100% { box-shadow: 0 0 0 0 rgba(212,175,55,0.3); }
    50% { box-shadow: 0 0 0 8px rgba(212,175,55,0); }
}

.animate-in {
    animation: fadeInUp 0.6s ease-out both;
}
.animate-in-delay-1 { animation-delay: 0.1s; }
.animate-in-delay-2 { animation-delay: 0.2s; }
.animate-in-delay-3 { animation-delay: 0.3s; }

.pulse-badge {
    animation: pulse-gold 2s ease-in-out infinite;
}

/* ---- Footer ---- */
.site-footer {
    margin-top: 4rem;
    padding: 2rem 0;
    border-top: 1px solid rgba(255,255,255,0.05);
    text-align: center;
    color: var(--text-muted);
    font-size: 0.75rem;
    letter-spacing: 1px;
}

/* ---- Landing Page ---- */
.min-vh-75 { min-height: 75vh; }
.landing-hero { padding: 4rem 0; }
.feature-box {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    padding: 2.5rem 2rem;
    border-radius: var(--radius);
    height: 100%;
    transition: var(--transition);
    text-align: center;
}
.feature-box:hover {
    border-color: var(--gold);
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(0,0,0,0.4);
}
.feature-icon {
    width: 70px;
    height: 70px;
    background: rgba(212,175,55,0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto;
    font-size: 1.8rem;
    color: var(--gold);
    transition: var(--transition);
}
.feature-box:hover .feature-icon {
    background: var(--gold);
    color: #000;
}

.hero-image-container {
    position: relative;
    height: 400px;
    display: flex;
    align-items: center;
    justify-content: center;
}
.hero-image-glow {
    position: absolute;
    width: 300px;
    height: 300px;
    background: radial-gradient(circle, rgba(212,175,55,0.15) 0%, transparent 70%);
    filter: blur(40px);
    animation: pulse-gold 4s infinite ease-in-out;
}
.floating-icon {
    animation: float 6s infinite ease-in-out;
}
@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-20px); }
}

/* ---- Membership Card (Digital ID) ---- */
.membership-card {
    background: linear-gradient(135deg, #1a1a24 0%, #13131a 100%);
    border: 1px solid rgba(212,175,55,0.3);
    border-radius: 20px;
    padding: 2rem;
    position: relative;
    overflow: hidden;
    color: #fff;
    box-shadow: 0 15px 35px rgba(0,0,0,0.5);
    max-width: 400px;
    margin: 0 auto;
}
.membership-card::before {
    content: '';
    position: absolute;
    top: -50%; right: -20%;
    width: 200px; height: 200px;
    background: radial-gradient(circle, rgba(212,175,55,0.1) 0%, transparent 70%);
}
.card-chip {
    width: 45px;
    height: 35px;
    background: linear-gradient(135deg, #f1c40f 0%, #d4af37 100%);
    border-radius: 6px;
    margin-bottom: 1.5rem;
    opacity: 0.8;
}
.card-number {
    font-family: 'Courier New', monospace;
    font-size: 1.2rem;
    letter-spacing: 4px;
    margin-bottom: 1.5rem;
    display: block;
}
.card-label {
    font-size: 0.6rem;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    color: var(--text-muted);
    display: block;
}
.card-value {
    font-size: 0.9rem;
    font-weight: 700;
    letter-spacing: 1px;
}

/* ---- Profile Image Display ---- */
.avatar-wrapper {
    position: relative;
    width: 100px;
    height: 100px;
    margin: 0 auto 1.5rem;
}
.avatar-image {
    width: 100%;
    height: 100%;
    border-radius: 50%;
    object-fit: cover;
    border: 3px solid var(--gold);
    padding: 3px;
}
.avatar-placeholder {
    width: 100%;
    height: 100%;
    border-radius: 50%;
    background: var(--charcoal);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.5rem;
    color: var(--gold);
    border: 3px solid var(--gold);
}

/* ---- Responsive ---- */
@media (max-width: 768px) {
    .hero-section { padding: 2rem 1.5rem; }
    .stat-card { padding: 1.3rem 1rem; }
    .stat-card h2 { font-size: 1.5rem; }
    .navbar-brand { font-size: 1.2rem; }
    .auth-card { padding: 1.8rem; }
    .landing-hero { text-align: center; }
    .landing-hero .d-flex { justify-content: center; }
}