/* ==========================================================================
   Material Design 3 + FinTech Glass System
   ========================================================================== */

:root,
[data-theme="dark"] {
  color-scheme: dark;

  /* MD3 tonal palette — FinTech teal primary */
  --md-sys-color-primary: #4fd6a7;
  --md-sys-color-on-primary: #003828;
  --md-sys-color-primary-container: #005c43;
  --md-sys-color-on-primary-container: #8ff4cd;
  --md-sys-color-secondary: #a8cfc2;
  --md-sys-color-on-secondary: #12372d;
  --md-sys-color-secondary-container: #2a4e43;
  --md-sys-color-tertiary: #8ec8ff;
  --md-sys-color-on-tertiary: #003258;
  --md-sys-color-error: #ffb4ab;
  --md-sys-color-on-error: #690005;
  --md-sys-color-error-container: #93000a;
  --md-sys-color-on-error-container: #ffdad6;

  --md-sys-color-surface: #0d1412;
  --md-sys-color-surface-dim: #0d1412;
  --md-sys-color-surface-bright: #323a37;
  --md-sys-color-surface-container-lowest: #080e0c;
  --md-sys-color-surface-container-low: #151c1a;
  --md-sys-color-surface-container: #19201e;
  --md-sys-color-surface-container-high: #232b28;
  --md-sys-color-surface-container-highest: #2e3633;
  --md-sys-color-on-surface: #dde4e0;
  --md-sys-color-on-surface-variant: #bbc9c1;
  --md-sys-color-outline: #85948c;
  --md-sys-color-outline-variant: #3c4a44;
  --md-sys-color-inverse-surface: #dde4e0;
  --md-sys-color-inverse-on-surface: #2a322f;
  --md-sys-color-scrim: #000000;

  /* App aliases (compat with existing classes) */
  --bg: var(--md-sys-color-surface);
  --bg-elevated: var(--md-sys-color-surface-container);
  --bg-soft: var(--md-sys-color-surface-container-high);
  --surface: rgba(25, 32, 30, 0.72);
  --surface-2: var(--md-sys-color-surface-container-high);
  --border: color-mix(in srgb, var(--md-sys-color-outline) 42%, transparent);
  --border-strong: color-mix(in srgb, var(--md-sys-color-outline) 68%, transparent);
  --text: var(--md-sys-color-on-surface);
  --text-muted: var(--md-sys-color-on-surface-variant);
  --text-dim: var(--md-sys-color-outline);
  --accent: var(--md-sys-color-primary);
  --accent-2: #7aefc4;
  --accent-dim: color-mix(in srgb, var(--md-sys-color-primary) 16%, transparent);
  --accent-glow: color-mix(in srgb, var(--md-sys-color-primary) 32%, transparent);
  --warn: #f5c26b;
  --danger: var(--md-sys-color-error);
  --success: #6ee7a8;
  --info: var(--md-sys-color-tertiary);
  --link-hover: var(--md-sys-color-primary);

  --glass-bg: rgba(21, 28, 26, 0.55);
  --glass-bg-strong: rgba(25, 32, 30, 0.78);
  --glass-border: rgba(255, 255, 255, 0.14);
  --glass-highlight: rgba(255, 255, 255, 0.08);
  --header-bg: rgba(13, 20, 18, 0.65);
  --sidebar-bg: linear-gradient(180deg, rgba(21, 28, 26, 0.92), rgba(13, 20, 18, 0.96));

  --md-elevation-1: 0 1px 2px rgba(0,0,0,.28), 0 1px 3px 1px rgba(0,0,0,.18);
  --md-elevation-2: 0 1px 2px rgba(0,0,0,.3), 0 2px 6px 2px rgba(0,0,0,.2);
  --md-elevation-3: 0 4px 8px 3px rgba(0,0,0,.22), 0 1px 3px rgba(0,0,0,.3);
  --shadow: var(--md-elevation-2);

  --md-shape-xs: 8px;
  --md-shape-sm: 12px;
  --md-shape-md: 16px;
  --md-shape-lg: 24px;
  --md-shape-xl: 28px;
  --md-shape-full: 999px;
  --radius: var(--md-shape-md);
  --radius-sm: var(--md-shape-sm);
  --radius-lg: var(--md-shape-lg);

  --md-motion-short: 200ms;
  --md-motion-medium: 300ms;
  --md-motion-long: 450ms;
  --md-easing-standard: cubic-bezier(0.2, 0, 0, 1);
  --md-easing-emphasized: cubic-bezier(0.2, 0, 0, 1);
  --ease: var(--md-easing-emphasized);

  --font: "Tajawal", system-ui, sans-serif;
  --font-display: "Tajawal", system-ui, sans-serif;
  --header-h: 72px;
  --sidebar-w: 288px;
  --container: 1200px;
  --focus-ring: 0 0 0 3px color-mix(in srgb, var(--md-sys-color-primary) 45%, transparent);
}

[data-theme="light"] {
  color-scheme: light;

  --md-sys-color-primary: #0d7a5f;
  --md-sys-color-on-primary: #ffffff;
  --md-sys-color-primary-container: #d4f5e8;
  --md-sys-color-on-primary-container: #00382a;
  --md-sys-color-secondary: #3d5a52;
  --md-sys-color-on-secondary: #ffffff;
  --md-sys-color-secondary-container: #e2f0ea;
  --md-sys-color-tertiary: #1a6b9a;
  --md-sys-color-on-tertiary: #ffffff;
  --md-sys-color-error: #c62828;
  --md-sys-color-on-error: #ffffff;
  --md-sys-color-error-container: #ffebee;
  --md-sys-color-on-error-container: #5f1010;

  --md-sys-color-surface: #f4f7f6;
  --md-sys-color-surface-dim: #d8e0dc;
  --md-sys-color-surface-bright: #ffffff;
  --md-sys-color-surface-container-lowest: #ffffff;
  --md-sys-color-surface-container-low: #eef3f1;
  --md-sys-color-surface-container: #e8efec;
  --md-sys-color-surface-container-high: #e2eae6;
  --md-sys-color-surface-container-highest: #dce5e1;
  --md-sys-color-on-surface: #14201c;
  --md-sys-color-on-surface-variant: #44554e;
  --md-sys-color-outline: #6b7c74;
  --md-sys-color-outline-variant: #c5d2cc;
  --md-sys-color-inverse-surface: #1c2824;
  --md-sys-color-inverse-on-surface: #eef4f1;

  --bg: #f4f7f6;
  --bg-elevated: #ffffff;
  --bg-soft: #eef3f1;
  --surface: rgba(255, 255, 255, 0.88);
  --surface-2: #eef3f1;
  --border: rgba(20, 32, 28, 0.16);
  --border-strong: rgba(20, 32, 28, 0.26);
  --text: #14201c;
  --text-muted: #4a5c55;
  --text-dim: #6b7c74;
  --accent: #0d7a5f;
  --accent-2: #0a6b53;
  --accent-dim: rgba(13, 122, 95, 0.1);
  --accent-glow: rgba(13, 122, 95, 0.18);
  --warn: #a16207;
  --danger: #c62828;
  --success: #0f7a4c;
  --info: #1a6b9a;
  --link-hover: #0a5f4a;

  --glass-bg: rgba(255, 255, 255, 0.78);
  --glass-bg-strong: rgba(255, 255, 255, 0.92);
  --glass-border: rgba(20, 32, 28, 0.14);
  --glass-highlight: rgba(255, 255, 255, 0.95);
  --header-bg: rgba(255, 255, 255, 0.86);
  --sidebar-bg: linear-gradient(180deg, #ffffff 0%, #f4f7f6 100%);

  --md-elevation-1: 0 1px 2px rgba(20, 32, 28, 0.05), 0 1px 3px rgba(20, 32, 28, 0.04);
  --md-elevation-2: 0 2px 6px rgba(20, 32, 28, 0.06), 0 8px 20px rgba(20, 32, 28, 0.05);
  --md-elevation-3: 0 8px 28px rgba(20, 32, 28, 0.08), 0 2px 8px rgba(20, 32, 28, 0.05);
  --shadow: var(--md-elevation-2);
}

[data-theme="light"] body {
  background:
    radial-gradient(920px 420px at 90% -10%, rgba(13, 122, 95, 0.09), transparent 55%),
    radial-gradient(640px 360px at -5% 20%, rgba(26, 107, 154, 0.06), transparent 50%),
    linear-gradient(180deg, #fafcfb 0%, #f4f7f6 40%, #eef3f1 100%);
}

/* ---------- Reset & base ---------- */
*, *::before, *::after { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  font-family: var(--font);
  font-size: 1rem;
  line-height: 1.65;
  color: var(--text);
  background:
    radial-gradient(900px 480px at 88% -8%, color-mix(in srgb, var(--md-sys-color-primary) 18%, transparent), transparent 55%),
    radial-gradient(700px 420px at 0% 18%, color-mix(in srgb, var(--md-sys-color-tertiary) 12%, transparent), transparent 50%),
    var(--bg);
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  transition: background var(--md-motion-medium) var(--ease), color var(--md-motion-medium) var(--ease);
}

img, svg { max-width: 100%; height: auto; display: block; }
svg.md-icon { display: inline-block; flex-shrink: 0; vertical-align: middle; }

a {
  color: var(--accent-2);
  text-decoration: none;
  transition: color var(--md-motion-short) var(--ease);
}
a:hover { color: var(--link-hover); }

:focus { outline: none; }
:focus-visible {
  outline: 2px solid var(--md-sys-color-primary);
  outline-offset: 3px;
  box-shadow: var(--focus-ring);
}

.skip-link {
  position: absolute;
  inset-inline-start: -9999px;
  top: 0;
  z-index: 10000;
  padding: 0.75rem 1.1rem;
  border-radius: var(--md-shape-sm);
  background: var(--md-sys-color-primary);
  color: var(--md-sys-color-on-primary);
  font-weight: 600;
}
.skip-link:focus {
  inset-inline-start: 1rem;
  top: 1rem;
}

.container {
  width: min(100%, var(--container));
  margin-inline: auto;
  padding-inline: clamp(1.25rem, 5vw, 2.75rem);
  box-sizing: border-box;
}

/* ---------- Glass utility ---------- */
.glass {
  background: var(--glass-bg);
  backdrop-filter: blur(22px) saturate(1.35);
  -webkit-backdrop-filter: blur(22px) saturate(1.35);
  border: 1px solid var(--glass-border);
  box-shadow: var(--md-elevation-1), inset 0 1px 0 var(--glass-highlight);
}

.glass-strong {
  background: var(--glass-bg-strong);
  backdrop-filter: blur(28px) saturate(1.4);
  -webkit-backdrop-filter: blur(28px) saturate(1.4);
  border: 1px solid var(--glass-border);
  box-shadow: var(--md-elevation-2), inset 0 1px 0 var(--glass-highlight);
}

/* ---------- Icon buttons ---------- */
.md-icon-btn {
  width: 44px;
  height: 44px;
  min-width: 44px;
  min-height: 44px;
  border-radius: var(--md-shape-full);
  border: 1px solid var(--border);
  background: var(--glass-bg);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  color: var(--text);
  cursor: pointer;
  display: inline-grid;
  place-items: center;
  position: relative;
  transition: transform var(--md-motion-short) var(--ease), background var(--md-motion-short) var(--ease), border-color var(--md-motion-short) var(--ease), box-shadow var(--md-motion-short) var(--ease);
}
.md-icon-btn:hover {
  background: var(--accent-dim);
  border-color: color-mix(in srgb, var(--accent) 40%, transparent);
  transform: translateY(-1px);
}
.md-icon-btn:active { transform: scale(0.96); }

.theme-toggle-layer {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  transition: opacity var(--md-motion-short) var(--ease), transform var(--md-motion-medium) var(--ease);
}
[data-theme="dark"] .theme-toggle-moon { opacity: 0; transform: scale(0.5) rotate(-20deg); }
[data-theme="dark"] .theme-toggle-sun { opacity: 1; transform: scale(1) rotate(0); }
[data-theme="light"] .theme-toggle-sun { opacity: 0; transform: scale(0.5) rotate(20deg); }
[data-theme="light"] .theme-toggle-moon { opacity: 1; transform: scale(1) rotate(0); }

/* ---------- Buttons (MD3) ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.45rem;
  min-height: 44px;
  padding: 0.7rem 1.35rem;
  border-radius: var(--md-shape-full);
  border: 1px solid transparent;
  font-family: inherit;
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  line-height: 1.2;
  text-decoration: none;
  transition: transform var(--md-motion-short) var(--ease), box-shadow var(--md-motion-short) var(--ease), background var(--md-motion-short) var(--ease), border-color var(--md-motion-short) var(--ease), color var(--md-motion-short) var(--ease);
}
.btn:hover { transform: translateY(-1px); }
.btn:active { transform: scale(0.98); }
.btn:disabled { opacity: 0.5; cursor: not-allowed; transform: none; }

.btn-primary {
  background: var(--md-sys-color-primary);
  color: var(--md-sys-color-on-primary);
  box-shadow: var(--md-elevation-1), 0 8px 24px var(--accent-glow);
}
.btn-primary:hover {
  color: var(--md-sys-color-on-primary);
  box-shadow: var(--md-elevation-2), 0 12px 28px var(--accent-glow);
}

.btn-outline {
  background: transparent;
  border-color: var(--border-strong);
  color: var(--text);
}
.btn-outline:hover {
  background: var(--accent-dim);
  border-color: var(--accent);
  color: var(--accent-2);
}

.btn-ghost {
  background: var(--glass-bg);
  backdrop-filter: blur(12px);
  border-color: var(--border);
  color: var(--text);
}
.btn-ghost:hover {
  background: var(--surface-2);
  color: var(--text);
}

.btn-sm { min-height: 36px; padding: 0.4rem 0.95rem; font-size: 0.85rem; }
.btn-lg { min-height: 52px; padding: 0.95rem 1.7rem; font-size: 1.05rem; }
.btn-block { width: 100%; }

/* ---------- Motion ---------- */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(18px); }
  to { opacity: 1; transform: translateY(0); }
}
@keyframes softPulse {
  from { opacity: 0.85; transform: scale(1); }
  to { opacity: 1; transform: scale(1.02); }
}
@keyframes shimmer {
  0% { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}