/* ==========================================================================
   themes.css — Light & Dark Mode CSS Variable System
   ========================================================================== */

/* ── DARK MODE (Default) ── */
:root,
[data-theme="dark"] {
  --bg-page:         #0b0f19;
  --bg-card:         rgba(18, 26, 43, 0.75);
  --bg-card-solid:   #101928;
  --bg-input:        rgba(15, 23, 42, 0.85);
  --bg-overlay:      rgba(0, 0, 0, 0.6);
  --border-glass:    rgba(255, 255, 255, 0.10);
  --border-hover:    rgba(0, 229, 255, 0.35);
  --border-focus:    var(--primary-cyan);

  --text-main:       #f1f5f9;
  --text-muted:      #94a3b8;
  --text-dim:        #64748b;
  --text-inverse:    #0b0f19;

  --primary-cyan:    #00e5ff;
  --primary-emerald: #00e676;
  --accent-gold:     #ffd600;
  --accent-orange:   #ff6d00;
  --accent-purple:   #b388ff;

  --shadow-card:     0 10px 30px rgba(0, 0, 0, 0.35);
  --shadow-glow-c:   0 0 24px rgba(0, 229, 255, 0.18);
  --shadow-glow-g:   0 0 24px rgba(0, 230, 118, 0.18);

  --ticker-bg:       rgba(15, 23, 42, 0.95);
  --ticker-text:     var(--text-muted);
  --ticker-accent:   var(--primary-cyan);
  --sticky-bar-bg:   rgba(11, 15, 25, 0.96);
}

/* ── LIGHT MODE ── */
[data-theme="light"] {
  --bg-page:         #f0f4ff;
  --bg-card:         rgba(255, 255, 255, 0.80);
  --bg-card-solid:   #ffffff;
  --bg-input:        rgba(240, 244, 255, 0.95);
  --bg-overlay:      rgba(255, 255, 255, 0.7);
  --border-glass:    rgba(0, 0, 0, 0.09);
  --border-hover:    rgba(0, 115, 200, 0.4);
  --border-focus:    #0073c8;

  --text-main:       #0f172a;
  --text-muted:      #475569;
  --text-dim:        #94a3b8;
  --text-inverse:    #f1f5f9;

  --primary-cyan:    #0073c8;
  --primary-emerald: #00994f;
  --accent-gold:     #c97c00;
  --accent-orange:   #c95400;
  --accent-purple:   #6d28d9;

  --shadow-card:     0 4px 24px rgba(0, 0, 0, 0.10);
  --shadow-glow-c:   0 0 18px rgba(0, 115, 200, 0.12);
  --shadow-glow-g:   0 0 18px rgba(0, 153, 79, 0.12);

  --ticker-bg:       rgba(0, 115, 200, 0.07);
  --ticker-text:     var(--text-muted);
  --ticker-accent:   var(--primary-cyan);
  --sticky-bar-bg:   rgba(240, 244, 255, 0.97);
}

/* ── SMOOTH THEME TRANSITION ── */
body,
.glass-panel,
.navbar-header,
.custom-input,
.disco-card,
.btn-action,
.debug-panel,
.debug-console,
.calc-input,
.app-footer,
.sticky-mobile-bar,
.tariff-ticker {
  transition:
    background-color 0.3s ease,
    color 0.3s ease,
    border-color 0.3s ease,
    box-shadow 0.3s ease;
}

/* ── LIGHT MODE GLOW BG OVERRIDE ── */
[data-theme="light"] .glow-bg {
  background:
    radial-gradient(circle at 20% 15%, rgba(0, 115, 200, 0.07) 0%, transparent 45%),
    radial-gradient(circle at 80% 80%, rgba(0, 153, 79, 0.05) 0%, transparent 45%),
    radial-gradient(circle at 50% 50%, rgba(109, 40, 217, 0.03) 0%, transparent 50%);
}

/* ── THEME TOGGLE BUTTON ── */
.theme-toggle-btn {
  background: var(--bg-card);
  border: 1px solid var(--border-glass);
  border-radius: 50px;
  padding: 6px 14px;
  display: flex;
  align-items: center;
  gap: 8px;
  cursor: pointer;
  color: var(--text-muted);
  font-size: 0.82rem;
  font-weight: 600;
  transition: all 0.25s ease;
}

.theme-toggle-btn:hover {
  border-color: var(--border-hover);
  color: var(--primary-cyan);
}

.theme-toggle-btn .icon-sun  { display: none; }
.theme-toggle-btn .icon-moon { display: inline; }

[data-theme="light"] .theme-toggle-btn .icon-sun  { display: inline; }
[data-theme="light"] .theme-toggle-btn .icon-moon { display: none; }