:root {
    --surface: #ffffff;
    --surface-alt: #f8fafc;
    --border: rgba(15, 23, 42, 0.08);
    --primary: #0f172a;
    --accent: #2563eb;
    --accent-soft: #dbeafe;
    --radius-xl: 1.5rem;
    font-family: 'Space Grotesk', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

body {
    background: var(--surface-alt);
    color: var(--primary);
    font-size: 0.95rem;
    min-height: 100vh;
}

.auth-body {
    background: var(--surface-alt) !important;
    color: var(--primary);
}

.auth-card {
    background: #ffffff;
    border-radius: 24px;
    overflow: hidden;
    max-width: 960px;
    width: 100%;
    border: 1px solid rgba(15, 23, 42, 0.06);
}

.auth-illustration {
    background: linear-gradient(135deg, #c7d2fe, #818cf8);
    color: #0f172a;
    border-radius: 24px 0 0 24px;
    min-height: 100%;
}

.auth-illustration h1 {
    color: #0f172a;
}

.auth-form .form-control {
    border-radius: 0.75rem;
    padding: 0.8rem 1rem;
    border-color: rgba(15, 23, 42, 0.12);
}

.auth-form .btn-primary {
    border-radius: 0.75rem;
    font-weight: 600;
}

.bg-slate-900 {
    background-color: var(--surface) !important;
}

.bg-slate-950 {
    background-color: var(--surface-alt) !important;
}

.bg-cyan {
    background-color: var(--accent) !important;
}

.text-slate-950 {
    color: var(--primary) !important;
}

.text-cyan {
    color: var(--accent) !important;
}

.border-slate-800 {
    border-color: var(--border) !important;
}

.btn-cyan {
    background-color: var(--accent);
    border-color: var(--accent);
    color: #fff;
    font-weight: 600;
}

.btn-cyan:hover {
    background-color: #1d4ed8;
    border-color: #1d4ed8;
}

.card {
    border-radius: 1rem;
    border: 1px solid var(--border);
    background: var(--surface);
}

.avatar,
.avatar-lg {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 999px;
    width: 40px;
    height: 40px;
    background-color: var(--accent-soft);
    color: var(--accent);
    font-size: 0.95rem;
}

.avatar-lg {
    width: 64px;
    height: 64px;
    font-size: 1.2rem;
}

.hero-card {
    border-radius: var(--radius-xl);
    position: relative;
    overflow: hidden;
}

.hero-card::after {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at 20% 20%, rgba(37, 99, 235, 0.12), transparent 60%);
    pointer-events: none;
}

.hero-glow .glass-card {
    background: rgba(255, 255, 255, 0.85);
    border: 1px solid var(--border);
    backdrop-filter: blur(16px);
}

.timeline-card {
    background: linear-gradient(120deg, rgba(37, 99, 235, 0.12), rgba(37, 99, 235, 0.04));
    border-radius: 1.25rem;
}

.list-group-item {
    border-color: var(--border);
}

.app-header {
    position: sticky;
    top: 0;
    z-index: 10;
    backdrop-filter: blur(12px);
    background-color: rgba(255, 255, 255, 0.95);
}

.app-logo {
    letter-spacing: 0.04em;
}