/* ═══════════════════════════════════════════════════════════
   Prediction Radar — Design System
   Premium dark command-center aesthetic
   ═══════════════════════════════════════════════════════════ */

:root {
  --bg: #060810;
  --bg-elevated: #0c0e1a;
  --bg-card: #12131f;
  --bg-card-hover: #181a2a;
  --bg-input: #0e1020;
  --border: rgba(99, 102, 241, 0.15);
  --border-strong: rgba(99, 102, 241, 0.3);
  --border-focus: rgba(99, 102, 241, 0.6);

  --text: #f1f5f9;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --text-dim: #475569;

  --accent: #6366f1;
  --accent-hover: #4f46e5;
  --accent-glow: rgba(99, 102, 241, 0.15);
  --accent-text: #a5b4fc;

  --green: #10b981;
  --green-bg: rgba(16, 185, 129, 0.1);
  --red: #ef4444;
  --red-bg: rgba(239, 68, 68, 0.1);
  --amber: #f59e0b;
  --amber-bg: rgba(245, 158, 11, 0.1);
  --blue: #3b82f6;

  --radius: 12px;
  --radius-sm: 8px;
  --radius-xs: 6px;
  --shadow: 0 4px 24px rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 8px 40px rgba(0, 0, 0, 0.4);

  --font: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Inter', sans-serif;
  --font-mono: 'SF Mono', 'Fira Code', 'Cascadia Code', monospace;

  --sidebar-width: 260px;
  --topbar-height: 64px;
}

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

html { font-size: 15px; scroll-behavior: smooth; }

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
}

a { color: var(--accent-text); text-decoration: none; transition: color 0.2s; }
a:hover { color: var(--accent); }

/* ── Typography ── */
h1 { font-size: 2rem; font-weight: 700; letter-spacing: -0.5px; color: var(--text); }
h2 { font-size: 1.5rem; font-weight: 700; letter-spacing: -0.3px; color: var(--text); }
h3 { font-size: 1.15rem; font-weight: 600; color: var(--text); }
h4 { font-size: 0.95rem; font-weight: 600; color: var(--text-secondary); text-transform: uppercase; letter-spacing: 0.5px; }

.text-accent { color: var(--accent-text); }
.text-muted { color: var(--text-muted); }
.text-secondary { color: var(--text-secondary); }
.text-green { color: var(--green); }
.text-red { color: var(--red); }
.text-amber { color: var(--amber); }

/* ── Cards ── */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  transition: border-color 0.2s, box-shadow 0.2s;
}
.card:hover { border-color: var(--border-strong); }
.card-glow { box-shadow: 0 0 30px var(--accent-glow); }

/* ── Buttons ── */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 10px 24px; border-radius: var(--radius-sm); font-weight: 600; font-size: 0.9rem;
  border: none; cursor: pointer; transition: all 0.2s; text-decoration: none;
  font-family: var(--font);
}
.btn-primary { background: var(--accent); color: #fff; }
.btn-primary:hover { background: var(--accent-hover); box-shadow: 0 4px 20px rgba(99,102,241,0.3); color: #fff; }
.btn-secondary { background: transparent; color: var(--text); border: 1px solid var(--border-strong); }
.btn-secondary:hover { border-color: var(--accent); color: var(--accent-text); background: var(--accent-glow); }
.btn-danger { background: var(--red); color: #fff; }
.btn-danger:hover { background: #dc2626; }
.btn-ghost { background: transparent; color: var(--text-secondary); }
.btn-ghost:hover { color: var(--text); background: rgba(255,255,255,0.05); }
.btn-sm { padding: 6px 16px; font-size: 0.8rem; border-radius: var(--radius-xs); }
.btn-lg { padding: 14px 36px; font-size: 1rem; border-radius: var(--radius); }
.btn:disabled { opacity: 0.5; cursor: not-allowed; }

/* ── Inputs ── */
.input, .select, textarea {
  width: 100%; padding: 10px 14px; border-radius: var(--radius-sm);
  border: 1px solid var(--border); background: var(--bg-input);
  color: var(--text); font-family: var(--font); font-size: 0.9rem;
  transition: border-color 0.2s, box-shadow 0.2s; outline: none;
}
.input:focus, .select:focus, textarea:focus {
  border-color: var(--border-focus);
  box-shadow: 0 0 0 3px var(--accent-glow);
}
.input::placeholder { color: var(--text-dim); }
.input-group { display: flex; flex-direction: column; gap: 6px; }
.input-group label { font-size: 0.85rem; font-weight: 500; color: var(--text-secondary); }

/* ── Badges ── */
.badge {
  display: inline-flex; align-items: center; padding: 3px 10px; border-radius: 20px;
  font-size: 0.75rem; font-weight: 600; letter-spacing: 0.3px;
}
.badge-green { background: var(--green-bg); color: var(--green); }
.badge-red { background: var(--red-bg); color: var(--red); }
.badge-amber { background: var(--amber-bg); color: var(--amber); }
.badge-accent { background: var(--accent-glow); color: var(--accent-text); }
.badge-muted { background: rgba(100,116,139,0.15); color: var(--text-muted); }

/* ── Tables ── */
.table-wrap { overflow-x: auto; border-radius: var(--radius); border: 1px solid var(--border); }
table { width: 100%; border-collapse: collapse; }
th { background: var(--bg-elevated); padding: 12px 16px; text-align: left; font-size: 0.8rem; font-weight: 600; color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.5px; border-bottom: 1px solid var(--border); }
td { padding: 12px 16px; border-bottom: 1px solid rgba(255,255,255,0.04); font-size: 0.9rem; }
tr:hover td { background: rgba(99,102,241,0.03); }

/* ── Layout helpers ── */
.flex { display: flex; }
.flex-col { flex-direction: column; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.gap-1 { gap: 4px; }
.gap-2 { gap: 8px; }
.gap-3 { gap: 12px; }
.gap-4 { gap: 16px; }
.gap-6 { gap: 24px; }
.gap-8 { gap: 32px; }
.grid { display: grid; }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
.w-full { width: 100%; }
.mt-2 { margin-top: 8px; }
.mt-4 { margin-top: 16px; }
.mt-6 { margin-top: 24px; }
.mt-8 { margin-top: 32px; }
.mb-4 { margin-bottom: 16px; }
.mb-6 { margin-bottom: 24px; }
.p-4 { padding: 16px; }
.p-6 { padding: 24px; }
.p-8 { padding: 32px; }
.text-center { text-align: center; }
.hidden { display: none !important; }

/* ── Toast ── */
.toast-container { position: fixed; top: 20px; right: 20px; z-index: 9999; display: flex; flex-direction: column; gap: 8px; }
.toast {
  padding: 12px 20px; border-radius: var(--radius-sm); font-size: 0.9rem; font-weight: 500;
  box-shadow: var(--shadow-lg); animation: toastIn 0.3s ease; max-width: 400px;
}
.toast-success { background: var(--green); color: #fff; }
.toast-error { background: var(--red); color: #fff; }
.toast-info { background: var(--accent); color: #fff; }
@keyframes toastIn { from { opacity: 0; transform: translateY(-10px); } to { opacity: 1; transform: translateY(0); } }

/* ── Loading ── */
.spinner {
  width: 20px; height: 20px; border: 2px solid var(--border);
  border-top-color: var(--accent); border-radius: 50%;
  animation: spin 0.6s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

.skeleton {
  background: linear-gradient(90deg, var(--bg-card) 25%, var(--bg-card-hover) 50%, var(--bg-card) 75%);
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
  border-radius: var(--radius-sm);
}
@keyframes shimmer { 0% { background-position: 200% 0; } 100% { background-position: -200% 0; } }

/* ── Modal ── */
.modal-overlay {
  position: fixed; inset: 0; background: rgba(0,0,0,0.7); z-index: 1000;
  display: flex; align-items: center; justify-content: center; padding: 24px;
  backdrop-filter: blur(4px); animation: fadeIn 0.2s ease;
}
.modal {
  background: var(--bg-card); border: 1px solid var(--border-strong);
  border-radius: var(--radius); padding: 32px; max-width: 500px; width: 100%;
  box-shadow: var(--shadow-lg);
}
@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }

/* ── Empty state ── */
.empty-state {
  text-align: center; padding: 48px 24px; color: var(--text-muted);
}
.empty-state svg, .empty-state .icon { font-size: 48px; margin-bottom: 16px; opacity: 0.3; }
.empty-state h3 { color: var(--text-secondary); margin-bottom: 8px; }

/* ── Responsive ── */
@media (max-width: 1024px) {
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 768px) {
  .grid-4, .grid-3, .grid-2 { grid-template-columns: 1fr; }
  .card { padding: 16px; }
  h1 { font-size: 1.5rem; }
}

/* ── Scrollbar ── */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--border-strong); }

/* ── Auth pages layout ── */
.auth-page {
  min-height: 100vh; display: flex; align-items: center; justify-content: center;
  padding: 24px; background: var(--bg);
  background-image: radial-gradient(ellipse at 30% 20%, rgba(99,102,241,0.08) 0%, transparent 60%),
                    radial-gradient(ellipse at 70% 80%, rgba(99,102,241,0.05) 0%, transparent 60%);
}
.auth-card {
  background: var(--bg-card); border: 1px solid var(--border-strong);
  border-radius: var(--radius); padding: 40px 36px; max-width: 440px; width: 100%;
  box-shadow: var(--shadow-lg);
}
.auth-card .logo {
  color: var(--accent); font-size: 1.5rem; font-weight: 800; letter-spacing: -0.5px;
  margin-bottom: 32px; display: flex; align-items: center; gap: 10px;
}
.auth-card .logo svg { width: 32px; height: 32px; }
.auth-card h1 { font-size: 1.5rem; margin-bottom: 8px; }
.auth-card .subtitle { color: var(--text-secondary); margin-bottom: 28px; font-size: 0.95rem; }

/* ── App shell ── */
.app-topbar {
  position: fixed; top: 0; left: var(--sidebar-width); right: 0; height: var(--topbar-height);
  background: var(--bg-elevated); border-bottom: 1px solid var(--border);
  display: flex; align-items: center; justify-content: space-between;
  padding: 0 24px; z-index: 100;
}
.app-sidebar {
  position: fixed; top: 0; left: 0; bottom: 0; width: var(--sidebar-width);
  background: var(--bg-elevated); border-right: 1px solid var(--border);
  display: flex; flex-direction: column; z-index: 200; overflow-y: auto;
}
.app-sidebar .logo-area {
  padding: 20px 20px 16px; border-bottom: 1px solid var(--border);
  display: flex; align-items: center; gap: 10px;
}
.app-sidebar .logo-area .logo-text {
  font-size: 1.1rem; font-weight: 800; color: var(--accent); letter-spacing: -0.3px;
}
.app-sidebar .logo-area .logo-badge {
  font-size: 0.6rem; background: var(--accent-glow); color: var(--accent-text);
  padding: 2px 6px; border-radius: 4px; font-weight: 600; text-transform: uppercase;
}
.app-sidebar nav { flex: 1; padding: 12px 8px; }
.sidebar-section { margin-bottom: 8px; }
.sidebar-section-label {
  font-size: 0.7rem; font-weight: 600; color: var(--text-dim); text-transform: uppercase;
  letter-spacing: 0.8px; padding: 8px 12px 4px;
}
.sidebar-link {
  display: flex; align-items: center; gap: 10px; padding: 9px 12px;
  border-radius: var(--radius-xs); color: var(--text-secondary); font-size: 0.88rem;
  font-weight: 500; transition: all 0.15s; cursor: pointer; text-decoration: none;
}
.sidebar-link:hover { background: rgba(99,102,241,0.08); color: var(--text); }
.sidebar-link.active { background: var(--accent-glow); color: var(--accent-text); }
.sidebar-link svg { width: 18px; height: 18px; opacity: 0.7; flex-shrink: 0; }
.sidebar-link.active svg { opacity: 1; }

.sidebar-user {
  padding: 16px; border-top: 1px solid var(--border);
  display: flex; align-items: center; gap: 12px;
}
.sidebar-user .avatar {
  width: 36px; height: 36px; border-radius: 50%; background: var(--accent-glow);
  display: flex; align-items: center; justify-content: center;
  color: var(--accent); font-weight: 700; font-size: 0.9rem;
}
.sidebar-user .info { flex: 1; min-width: 0; }
.sidebar-user .name { font-size: 0.85rem; font-weight: 600; color: var(--text); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.sidebar-user .role-badge { font-size: 0.7rem; color: var(--text-muted); }

.app-main {
  margin-left: var(--sidebar-width); margin-top: var(--topbar-height);
  padding: 28px; min-height: calc(100vh - var(--topbar-height));
}

@media (max-width: 1024px) {
  .app-sidebar { transform: translateX(-100%); transition: transform 0.3s; }
  .app-sidebar.open { transform: translateX(0); }
  .app-topbar { left: 0; }
  .app-main { margin-left: 0; }
  :root { --sidebar-width: 260px; }
}

/* ── Stat cards ── */
.stat-card {
  background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 20px; display: flex; flex-direction: column; gap: 8px;
}
.stat-card .stat-label { font-size: 0.8rem; color: var(--text-muted); font-weight: 500; text-transform: uppercase; letter-spacing: 0.3px; }
.stat-card .stat-value { font-size: 1.8rem; font-weight: 700; color: var(--text); }
.stat-card .stat-change { font-size: 0.8rem; }

/* ── Steps / onboarding ── */
.steps { display: flex; gap: 0; align-items: center; margin-bottom: 32px; }
.step {
  flex: 1; text-align: center; position: relative; padding: 12px 8px;
}
.step::after {
  content: ''; position: absolute; top: 24px; left: 50%; width: 100%; height: 2px;
  background: var(--border); z-index: 0;
}
.step:last-child::after { display: none; }
.step .step-num {
  width: 32px; height: 32px; border-radius: 50%; display: inline-flex;
  align-items: center; justify-content: center; font-weight: 700; font-size: 0.85rem;
  background: var(--bg-card); border: 2px solid var(--border); color: var(--text-muted);
  position: relative; z-index: 1; transition: all 0.3s;
}
.step.active .step-num { background: var(--accent); border-color: var(--accent); color: #fff; }
.step.done .step-num { background: var(--green); border-color: var(--green); color: #fff; }
.step .step-label { font-size: 0.75rem; color: var(--text-dim); margin-top: 6px; }
.step.active .step-label { color: var(--accent-text); }
.step.done .step-label { color: var(--green); }