/* Grand Brain AI theme on Bootstrap 5.3.8 (local vendor copy).
   Dark by default via data-bs-theme="dark"; light via data-bs-theme="light".
   Urdu pages set dir="rtl" and load bootstrap.rtl.min.css instead. */

:root,
[data-bs-theme="dark"] {
  --gb-bg: #050b16;
  --gb-bg-glow-1: rgba(20, 225, 237, .14);
  --gb-bg-glow-2: rgba(24, 114, 225, .16);
  --gb-surface: rgba(12, 24, 42, .78);
  --gb-surface-strong: #0b1729;
  --gb-border: rgba(120, 170, 220, .18);
  --gb-text: #e8f1fb;
  --gb-muted: #93a9c2;
  --gb-accent: #14e1ed;
  --gb-accent-2: #1872e1;
  --gb-danger: #ff8a8f;
  --gb-shadow: 0 24px 80px rgba(0, 0, 0, .45), 0 0 0 1px rgba(255, 255, 255, .02) inset;

  --bs-body-bg: var(--gb-bg);
  --bs-body-color: var(--gb-text);
  --bs-secondary-color: var(--gb-muted);
  --bs-border-color: var(--gb-border);
  --bs-primary: #14c8e6;
  --bs-primary-rgb: 20, 200, 230;
  --bs-link-color: var(--gb-accent);
  --bs-link-hover-color: #7ef3fa;
  --bs-focus-ring-color: rgba(20, 225, 237, .35);
  --bs-border-radius: .75rem;
  --bs-border-radius-lg: 1.25rem;
  --bs-body-font-family: "Inter", "Segoe UI Variable", "Segoe UI", system-ui, -apple-system, Roboto, sans-serif;
}

[data-bs-theme="light"] {
  --gb-bg: #f3f7fc;
  --gb-bg-glow-1: rgba(20, 200, 230, .16);
  --gb-bg-glow-2: rgba(24, 114, 225, .10);
  --gb-surface: rgba(255, 255, 255, .86);
  --gb-surface-strong: #ffffff;
  --gb-border: rgba(30, 60, 100, .14);
  --gb-text: #0d1b2e;
  --gb-muted: #5a6f88;
  --gb-accent: #0a8fb8;
  --gb-accent-2: #1660c8;
  --gb-danger: #c62f3a;
  --gb-shadow: 0 20px 60px rgba(20, 50, 90, .12);
  --bs-primary: #0a8fb8;
  --bs-primary-rgb: 10, 143, 184;
  --bs-link-hover-color: #075f7b;
}

[dir="rtl"] {
  --bs-body-font-family: "Noto Nastaliq Urdu", "Jameel Noori Nastaleeq", "Urdu Typesetting", "Segoe UI", system-ui, sans-serif;
  line-height: 1.9;
}

body.gb-app {
  min-height: 100vh;
  background:
    radial-gradient(60rem 40rem at 15% 10%, var(--gb-bg-glow-1), transparent 60%),
    radial-gradient(50rem 40rem at 90% 90%, var(--gb-bg-glow-2), transparent 60%),
    var(--gb-bg);
  background-attachment: fixed;
  -webkit-font-smoothing: antialiased;
}

.gb-surface {
  background: var(--gb-surface);
  border: 1px solid var(--gb-border);
  border-radius: var(--bs-border-radius-lg);
  box-shadow: var(--gb-shadow);
  backdrop-filter: blur(18px) saturate(140%);
}

.gb-brand { font-weight: 750; letter-spacing: -.02em; }
.gb-brand .gb-brand-accent,
.gb-brand > span {
  background: linear-gradient(100deg, var(--gb-accent), var(--gb-accent-2));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.gb-mark {
  width: 2.75rem; height: 2.75rem; border-radius: .9rem;
  display: inline-grid; place-items: center;
  background: linear-gradient(135deg, var(--gb-accent), var(--gb-accent-2));
  color: #021018; font-weight: 800;
  box-shadow: 0 8px 30px rgba(20, 200, 230, .35);
}

.btn-gb {
  --bs-btn-color: #fff;
  --bs-btn-hover-color: #fff;
  --bs-btn-active-color: #fff;
  --bs-btn-disabled-color: #fff;
  --bs-btn-padding-y: .8rem;
  --bs-btn-font-weight: 650;
  --bs-btn-border-width: 0;
  background: linear-gradient(100deg, #10c6e0, #1872e1);
  transition: transform .15s ease, box-shadow .15s ease, filter .15s ease;
}
.btn-gb:hover { filter: brightness(1.08); box-shadow: 0 10px 30px rgba(24, 114, 225, .35); }
.btn-gb:active { transform: translateY(1px); }
.btn-gb:disabled { opacity: .55; }

.form-control, .form-select {
  background-color: color-mix(in srgb, var(--gb-surface-strong) 85%, transparent);
  border-color: var(--gb-border);
  padding: .75rem .9rem;
}
.form-control:focus, .form-select:focus {
  background-color: var(--gb-surface-strong);
  border-color: var(--gb-accent);
  box-shadow: 0 0 0 .25rem var(--bs-focus-ring-color);
}
.form-label { font-weight: 550; color: var(--gb-text); }
.form-text, .text-secondary { color: var(--gb-muted) !important; }

.gb-status:empty { display: none; }
.gb-status { color: var(--gb-danger); }

.gb-theme-toggle {
  border: 1px solid var(--gb-border); background: transparent; color: var(--gb-muted);
  border-radius: 999px; padding: .35rem .8rem; font-size: .875rem;
}
.gb-theme-toggle:hover { color: var(--gb-text); border-color: var(--gb-accent); }

@media (prefers-reduced-motion: reduce) {
  .btn-gb { transition: none; }
}