/* ========================================
   Krogi.ai Design System
   Dark theme | Cyan-to-purple gradient
   ======================================== */

/* --- Custom Properties --- */
:root {
    --bg-primary: #0a0a1a;
    --bg-card: #12122a;
    --bg-topbar: #0d0d24;
    --border-subtle: #1a1a3a;
    --border-hover: #7b2ff7;
    --text-primary: #e8e8f0;
    --text-secondary: #888;
    --text-muted: #555;
    --gradient-start: #00d4ff;
    --gradient-end: #7b2ff7;
    --green: #22c55e;
    --green-bg: rgba(34,197,94,0.15);
    --green-border: rgba(34,197,94,0.3);
    --red: #ef4444;
    --red-bg: rgba(239,68,68,0.15);
    --red-border: rgba(239,68,68,0.3);
    --yellow: #eab308;
    --yellow-bg: rgba(234,179,8,0.15);
    --yellow-border: rgba(234,179,8,0.3);
    --indigo: #818cf8;
    --indigo-bg: rgba(99,102,241,0.15);
    --indigo-border: rgba(99,102,241,0.3);
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 14px;
    --shadow-card: 0 2px 12px rgba(0,0,0,0.3);
    --shadow-hover: 0 8px 30px rgba(123,47,247,0.2);
    --transition: 0.25s cubic-bezier(0.4,0,0.2,1);
    --max-width: 1200px;
}

/* --- Reset & Base --- */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    min-height: 100vh;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }

/* --- Topbar --- */
.topbar {
    display: flex; align-items: center; justify-content: space-between;
    padding: 0.9rem 2rem;
    background: var(--bg-topbar);
    border-bottom: 1px solid var(--border-subtle);
    position: sticky; top: 0; z-index: 100;
    backdrop-filter: blur(12px);
}
.topbar-logo {
    font-size: 1.3rem; font-weight: 700; letter-spacing: -0.5px;
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
    -webkit-background-clip: text; -webkit-text-fill-color: transparent;
    background-clip: text;
}
.topbar-nav { display: flex; align-items: center; gap: 1.2rem; }
.topbar-nav a {
    color: var(--text-secondary); font-size: 0.88rem; font-weight: 500;
    transition: color var(--transition);
}
.topbar-nav a:hover, .topbar-nav a.active { color: var(--gradient-start); }
.topbar-right { display: flex; align-items: center; gap: 1rem; }
.user-pill {
    display: flex; align-items: center; gap: 8px;
    background: rgba(255,255,255,0.04); border: 1px solid var(--border-subtle);
    border-radius: 50px; padding: 4px 14px 4px 4px;
}
.user-pill img { width: 28px; height: 28px; border-radius: 50%; }
.user-pill span { font-size: 0.85rem; color: var(--text-primary); }
.btn-sm {
    font-size: 0.82rem; color: var(--text-secondary); padding: 4px 10px;
    border-radius: var(--radius-sm); transition: all var(--transition);
}
.btn-sm:hover { color: var(--text-primary); background: rgba(255,255,255,0.06); }
.btn-signin {
    padding: 8px 22px; border-radius: var(--radius-sm);
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
    color: #fff; font-size: 0.88rem; font-weight: 600;
    transition: transform var(--transition), box-shadow var(--transition);
}
.btn-signin:hover { transform: translateY(-1px); box-shadow: 0 4px 16px rgba(123,47,247,0.35); }

/* --- Containers --- */
.container { max-width: var(--max-width); margin: 0 auto; padding: 2rem; }
.container-narrow { max-width: 900px; margin: 0 auto; padding: 2rem; }

/* --- Hero (landing) --- */
.hero {
    display: flex; flex-direction: column; align-items: center; justify-content: center;
    text-align: center; min-height: calc(100vh - 58px); padding: 2rem;
}
.hero-title {
    font-size: clamp(2.5rem, 6vw, 4rem); font-weight: 800; letter-spacing: -1px;
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
    -webkit-background-clip: text; -webkit-text-fill-color: transparent;
    background-clip: text; margin-bottom: 1rem;
}
.hero-sub {
    font-size: 1.15rem; color: var(--text-secondary);
    max-width: 550px; margin-bottom: 2.5rem; line-height: 1.7;
}
.hero-cta {
    display: inline-block; padding: 14px 42px;
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
    color: #fff; border-radius: var(--radius-md); font-size: 1.05rem; font-weight: 600;
    transition: transform var(--transition), box-shadow var(--transition);
}
.hero-cta:hover { transform: translateY(-3px); box-shadow: 0 10px 30px rgba(123,47,247,0.3); }

/* --- Feature cards (landing) --- */
.features { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 1.5rem; max-width: 900px; margin: 0 auto; padding: 2rem 2rem 4rem; }
.feature-card {
    background: var(--bg-card); border: 1px solid var(--border-subtle); border-radius: var(--radius-lg);
    padding: 1.5rem; text-align: center;
}
.feature-card .icon { font-size: 2rem; margin-bottom: 0.8rem; display: block; }
.feature-card h3 { font-size: 1rem; margin-bottom: 0.4rem; }
.feature-card p { font-size: 0.85rem; color: var(--text-secondary); }

/* --- Section titles --- */
.section-title {
    font-size: 0.75rem; color: var(--text-muted); text-transform: uppercase;
    letter-spacing: 2px; font-weight: 600; margin-bottom: 1rem; margin-top: 2.5rem;
}

/* --- Greeting --- */
.greeting h2 { font-size: 1.7rem; font-weight: 700; margin-bottom: 0.3rem; }
.greeting p { color: var(--text-secondary); font-size: 0.95rem; }

/* --- Status bar (dashboard) --- */
.status-bar {
    display: flex; align-items: center; gap: 1.2rem; flex-wrap: wrap;
    padding: 1rem 1.5rem; background: var(--bg-card); border: 1px solid var(--border-subtle);
    border-radius: var(--radius-md); margin-bottom: 2rem; overflow-x: auto;
}
.status-item { display: flex; align-items: center; gap: 6px; white-space: nowrap; font-size: 0.82rem; color: var(--text-secondary); }
.status-dot {
    width: 8px; height: 8px; border-radius: 50%; flex-shrink: 0;
}
.status-dot.healthy { background: var(--green); box-shadow: 0 0 6px var(--green); }
.status-dot.down { background: var(--red); animation: pulse-red 1.5s infinite; }
.status-dot.unknown { background: var(--text-muted); }

@keyframes pulse-red {
    0%, 100% { box-shadow: 0 0 4px var(--red); }
    50% { box-shadow: 0 0 12px var(--red); }
}

/* --- Project cards grid --- */
.projects-grid {
    display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 1.2rem;
}
.project-card {
    background: var(--bg-card); border: 1px solid var(--border-subtle);
    border-radius: var(--radius-lg); padding: 1.4rem;
    display: flex; flex-direction: column; gap: 0.5rem;
    transition: transform var(--transition), border-color var(--transition), box-shadow var(--transition);
}
.project-card:hover { transform: translateY(-4px); border-color: var(--border-hover); box-shadow: var(--shadow-hover); }
.project-card-header { display: flex; align-items: center; gap: 10px; }
.project-card-icon {
    width: 36px; height: 36px; display: flex; align-items: center; justify-content: center;
    border-radius: var(--radius-sm); background: rgba(255,255,255,0.04);
    color: var(--gradient-start); flex-shrink: 0;
}
.project-card-icon svg { width: 20px; height: 20px; }
.project-card-title { font-size: 1.05rem; font-weight: 600; }
.project-card-desc { font-size: 0.85rem; color: var(--text-secondary); line-height: 1.5; }
.project-card-footer { display: flex; align-items: center; gap: 8px; margin-top: auto; padding-top: 0.5rem; }
.tech-tag {
    font-size: 0.7rem; padding: 2px 8px; border-radius: 4px;
    background: rgba(255,255,255,0.05); color: var(--text-muted);
}

/* --- Badge --- */
.badge {
    display: inline-block; padding: 2px 10px; border-radius: 50px;
    font-size: 0.7rem; font-weight: 600; text-transform: uppercase; letter-spacing: 0.5px;
}
.badge-active { background: var(--green-bg); color: var(--green); border: 1px solid var(--green-border); }
.badge-down { background: var(--red-bg); color: var(--red); border: 1px solid var(--red-border); }
.badge-warn { background: var(--yellow-bg); color: var(--yellow); border: 1px solid var(--yellow-border); }

/* --- AI card (gradient border) --- */
.ai-card {
    position: relative; background: var(--bg-card); border-radius: var(--radius-lg);
    padding: 1.5rem; overflow: hidden;
}
.ai-card::before {
    content: ''; position: absolute; inset: 0; border-radius: var(--radius-lg);
    padding: 1px; background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
    -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    -webkit-mask-composite: xor; mask-composite: exclude; pointer-events: none;
}
.ai-card-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 1rem; }
.ai-card-header h3 { font-size: 1.05rem; font-weight: 600; }
.models-list { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 1rem; }
.model-tag {
    padding: 3px 10px; border-radius: var(--radius-sm); font-size: 0.75rem;
    background: var(--indigo-bg); color: var(--indigo); border: 1px solid var(--indigo-border);
}
.stat-row { display: flex; gap: 2rem; flex-wrap: wrap; }
.stat { text-align: center; min-width: 70px; }
.stat-value { font-size: 1.6rem; font-weight: 700; color: #fff; }
.stat-label { font-size: 0.7rem; color: var(--text-muted); margin-top: 2px; text-transform: uppercase; letter-spacing: 0.5px; }

/* --- Infrastructure cards --- */
.infra-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 1.2rem; }
.infra-card {
    background: var(--bg-card); border: 1px solid var(--border-subtle);
    border-radius: var(--radius-lg); padding: 1.4rem;
}
.infra-card h4 { font-size: 1rem; font-weight: 600; margin-bottom: 0.5rem; }
.infra-card p { font-size: 0.85rem; color: var(--text-secondary); line-height: 1.5; }
.infra-spec {
    display: flex; flex-wrap: wrap; gap: 6px; margin-top: 0.6rem;
}
.spec-tag {
    font-size: 0.72rem; padding: 2px 8px; border-radius: 4px;
    background: rgba(255,255,255,0.05); color: var(--text-secondary);
}

/* --- Status page --- */
.status-banner {
    padding: 1.2rem; border-radius: var(--radius-md); text-align: center;
    font-size: 1.1rem; font-weight: 600; margin-bottom: 2rem;
}
.status-banner.all-good { background: var(--green-bg); color: var(--green); border: 1px solid var(--green-border); }
.status-banner.degraded { background: var(--yellow-bg); color: var(--yellow); border: 1px solid var(--yellow-border); }

.service-list { display: grid; gap: 0.8rem; }
.service-row {
    display: flex; justify-content: space-between; align-items: center;
    padding: 1rem 1.4rem; background: var(--bg-card); border: 1px solid var(--border-subtle);
    border-radius: var(--radius-md); transition: border-color var(--transition);
}
.service-row:hover { border-color: rgba(255,255,255,0.1); }
.service-info { display: flex; align-items: center; gap: 12px; }
.service-info .status-dot { width: 10px; height: 10px; }
.service-name { font-weight: 500; font-size: 0.95rem; }
.service-port { color: var(--text-muted); font-size: 0.8rem; margin-top: 1px; }
.service-right { display: flex; align-items: center; gap: 12px; }
.latency { font-size: 0.82rem; color: var(--text-muted); }
.latency.fast { color: var(--green); }
.latency.slow { color: var(--yellow); }

/* --- Footer --- */
.footer {
    text-align: center; padding: 2rem; color: var(--text-muted); font-size: 0.8rem;
    border-top: 1px solid var(--border-subtle); margin-top: 3rem;
}
.footer a { color: var(--text-secondary); }
.footer a:hover { color: var(--gradient-start); }

/* --- Fade-in animation --- */
@keyframes fadeUp { from { opacity: 0; transform: translateY(12px); } to { opacity: 1; transform: translateY(0); } }
.fade-up { animation: fadeUp 0.5s ease-out both; }
.fade-up-1 { animation-delay: 0.05s; }
.fade-up-2 { animation-delay: 0.1s; }
.fade-up-3 { animation-delay: 0.15s; }
.fade-up-4 { animation-delay: 0.2s; }

/* --- Responsive --- */
@media (max-width: 768px) {
    .topbar { padding: 0.8rem 1rem; flex-wrap: wrap; gap: 0.5rem; }
    .topbar-nav { gap: 0.8rem; }
    .container, .container-narrow { padding: 1.2rem; }
    .hero-title { font-size: 2.2rem; }
    .projects-grid { grid-template-columns: 1fr; }
    .infra-grid { grid-template-columns: 1fr; }
    .stat-row { gap: 1rem; }
    .status-bar { gap: 0.8rem; padding: 0.8rem 1rem; }
}
@media (max-width: 480px) {
    .topbar { padding: 0.6rem 0.8rem; }
    .hero-title { font-size: 1.8rem; }
    .hero-sub { font-size: 1rem; }
    .hero-cta { padding: 12px 32px; font-size: 0.95rem; }
    .user-pill span { display: none; }
    .features { grid-template-columns: 1fr 1fr; }
}