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

:root {
    --bg: #0f0f1a;
    --bg-card: #1a1a2e;
    --bg-card-hover: #22223a;
    --accent: #6c63ff;
    --accent-glow: rgba(108, 99, 255, 0.3);
    --success: #00d4aa;
    --warning: #ffb347;
    --danger: #ff6b6b;
    --text: #e8e8f0;
    --text-dim: #8888aa;
    --border: #2a2a40;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background: var(--bg);
    color: var(--text);
    min-height: 100vh;
}

nav {
    background: linear-gradient(135deg, var(--bg-card), #16213e);
    border-bottom: 1px solid var(--border);
    padding: 0 2rem;
    display: flex;
    align-items: center;
    height: 64px;
    position: sticky;
    top: 0;
    z-index: 100;
    backdrop-filter: blur(10px);
}

.logo {
    font-size: 1.4rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--accent), #a78bfa);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-right: 2rem;
}

.nav-links { display: flex; gap: 0.5rem; flex: 1; }
.nav-links a {
    color: var(--text-dim);
    text-decoration: none;
    padding: 0.6rem 1.2rem;
    border-radius: 8px;
    font-size: 0.9rem;
    transition: all 0.2s;
}
.nav-links a:hover, .nav-links a.active {
    color: var(--text);
    background: var(--accent-glow);
}

.nav-user {
    display: flex;
    align-items: center;
    gap: 0.8rem;
    font-size: 0.9rem;
    color: var(--text-dim);
}
.nav-user a { color: var(--danger); text-decoration: none; font-size: 0.85rem; }
.nav-user a:hover { text-decoration: underline; }

.container { max-width: 1200px; margin: 0 auto; padding: 2rem; }

h1 { font-size: 1.8rem; margin-bottom: 1.5rem; }
h2 { font-size: 1.3rem; margin-bottom: 1rem; color: var(--text-dim); }

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
    margin-bottom: 2rem;
}

.stat-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 1.5rem;
    transition: all 0.3s;
}
.stat-card:hover {
    border-color: var(--accent);
    box-shadow: 0 0 20px var(--accent-glow);
    transform: translateY(-2px);
}
.stat-value {
    font-size: 2rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--accent), var(--success));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}
.stat-label { color: var(--text-dim); font-size: 0.85rem; margin-top: 0.3rem; }

.filter-form {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 1.5rem;
    margin-bottom: 2rem;
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    align-items: flex-end;
}

.form-group { display: flex; flex-direction: column; gap: 0.4rem; }
.form-group label { font-size: 0.8rem; color: var(--text-dim); }
.form-group input, .form-group select {
    background: var(--bg);
    border: 1px solid var(--border);
    color: var(--text);
    padding: 0.6rem 1rem;
    border-radius: 8px;
    font-size: 0.9rem;
    width: 180px;
}
.form-group input:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px var(--accent-glow);
}
.form-group input.error { border-color: var(--danger); }

.btn {
    padding: 0.6rem 1.5rem;
    border: none;
    border-radius: 8px;
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
}
.btn-primary {
    background: linear-gradient(135deg, var(--accent), #5a52d5);
    color: white;
}
.btn-primary:hover { transform: translateY(-1px); box-shadow: 0 4px 15px var(--accent-glow); }
.btn-danger { background: var(--danger); color: white; font-size: 0.8rem; padding: 0.4rem 0.8rem; }
.btn-success { background: var(--success); color: #0f0f1a; font-size: 0.8rem; padding: 0.4rem 0.8rem; }

table {
    width: 100%;
    border-collapse: collapse;
    background: var(--bg-card);
    border-radius: 12px;
    overflow: hidden;
    border: 1px solid var(--border);
}

th {
    text-align: left;
    padding: 1rem;
    font-size: 0.8rem;
    color: var(--text-dim);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    border-bottom: 1px solid var(--border);
    background: rgba(108, 99, 255, 0.05);
}

td {
    padding: 0.8rem 1rem;
    font-size: 0.9rem;
    border-bottom: 1px solid var(--border);
}
tr:hover td { background: var(--bg-card-hover); }

.price { font-weight: 600; color: var(--success); }
.competitors {
    display: inline-block;
    padding: 0.2rem 0.6rem;
    border-radius: 12px;
    font-size: 0.8rem;
    font-weight: 600;
}
.competitors-low { background: rgba(0,212,170,0.15); color: var(--success); }
.competitors-mid { background: rgba(255,179,71,0.15); color: var(--warning); }
.competitors-high { background: rgba(255,107,107,0.15); color: var(--danger); }

.product-link {
    color: var(--accent);
    text-decoration: none;
    font-size: 0.85rem;
}
.product-link:hover { text-decoration: underline; }

.badge {
    display: inline-block;
    padding: 0.2rem 0.6rem;
    border-radius: 6px;
    font-size: 0.75rem;
    font-weight: 600;
}
.badge-active { background: rgba(0,212,170,0.15); color: var(--success); }
.badge-notified { background: rgba(108,99,255,0.15); color: var(--accent); }

.empty-state {
    text-align: center;
    padding: 3rem;
    color: var(--text-dim);
}
.empty-state .icon { font-size: 3rem; margin-bottom: 1rem; }

.report-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 2rem;
    margin-bottom: 1.5rem;
}
.report-title { font-size: 1.3rem; margin-bottom: 0.5rem; }
.report-meta { color: var(--text-dim); font-size: 0.85rem; margin-bottom: 1rem; }
.report-stats { display: flex; gap: 2rem; flex-wrap: wrap; margin: 1rem 0; }
.report-stat { text-align: center; }
.report-stat-value { font-size: 1.5rem; font-weight: 700; color: var(--accent); }
.report-stat-label { font-size: 0.75rem; color: var(--text-dim); }

.leader-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.3rem;
    padding: 0.3rem 0.8rem;
    background: linear-gradient(135deg, rgba(255,179,71,0.2), rgba(255,179,71,0.05));
    border: 1px solid rgba(255,179,71,0.3);
    border-radius: 8px;
    font-size: 0.85rem;
    color: var(--warning);
}

/* Auth pages */
.auth-wrapper {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    padding: 2rem;
}
.auth-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 2.5rem;
    width: 100%;
    max-width: 420px;
}
.auth-card h1 {
    text-align: center;
    margin-bottom: 0.5rem;
}
.auth-card .subtitle {
    text-align: center;
    color: var(--text-dim);
    margin-bottom: 2rem;
    font-size: 0.9rem;
}
.auth-card .form-group {
    margin-bottom: 1rem;
    width: 100%;
}
.auth-card .form-group input {
    width: 100%;
}
.auth-card .btn {
    width: 100%;
    padding: 0.8rem;
    font-size: 1rem;
    margin-top: 0.5rem;
}
.auth-card .auth-link {
    text-align: center;
    margin-top: 1.5rem;
    font-size: 0.85rem;
    color: var(--text-dim);
}
.auth-card .auth-link a {
    color: var(--accent);
    text-decoration: none;
}
.auth-card .auth-link a:hover { text-decoration: underline; }

/* Flash messages */
.flash {
    padding: 0.8rem 1.2rem;
    border-radius: 8px;
    margin-bottom: 1rem;
    font-size: 0.9rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}
.flash-error {
    background: rgba(255,107,107,0.15);
    border: 1px solid rgba(255,107,107,0.3);
    color: var(--danger);
}
.flash-success {
    background: rgba(0,212,170,0.15);
    border: 1px solid rgba(0,212,170,0.3);
    color: var(--success);
}
.flash-warning {
    background: rgba(255,179,71,0.15);
    border: 1px solid rgba(255,179,71,0.3);
    color: var(--warning);
}

@media (max-width: 768px) {
    .container { padding: 1rem; }
    .filter-form { flex-direction: column; }
    .form-group input { width: 100%; }
    .stats-grid { grid-template-columns: repeat(2, 1fr); }
}