/* ───────────────────────────────────────────────
   DevTools — Premium Light Design System
─────────────────────────────────────────────── */

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

:root {
  --bg:           #fafafa;
  --bg2:          #f4f4f6;
  --surface:      #ffffff;
  --surface-solid:#ffffff;
  --surface2:     #f0f0f4;
  --border:       rgba(0,0,0,0.08);
  --border-hover: rgba(0,0,0,0.16);
  --accent:       #6c5ce7;
  --accent-glow:  rgba(108,92,231,0.2);
  --accent-soft:  rgba(108,92,231,0.07);
  --accent2:      #00b894;
  --accent2-glow: rgba(0,184,148,0.18);
  --accent3:      #e17055;
  --accent3-glow: rgba(225,112,85,0.18);
  --text:         #1a1a2e;
  --text-secondary:#4a4a68;
  --muted:        #8b8ba7;
  --danger:       #e55b6f;
  --success:      #00b894;
  --bg-overlay-a: rgba(250,250,250,0.35);
  --bg-overlay-b: rgba(250,250,250,0.25);
  --bg-overlay-c: rgba(250,250,250,0.40);
  --bg-image:     url('images/whiteTheme.png');
  --radius:       14px;
  --radius-lg:    20px;
  --font:         'Inter', system-ui, -apple-system, sans-serif;
  --mono:         'JetBrains Mono', 'Fira Code', monospace;
  --ease:         cubic-bezier(0.25, 0.46, 0.45, 0.94);
  --ease-out:     cubic-bezier(0.16, 1, 0.3, 1);
  --transition:   0.2s var(--ease);
  --transition-slow: 0.5s var(--ease-out);
}

[data-theme="dark"] {
  --bg:           #0e0f14;
  --bg2:          #13151c;
  --surface:      #181a24;
  --surface-solid:#181a24;
  --surface2:     #1e2130;
  --border:       rgba(255,255,255,0.08);
  --border-hover: rgba(255,255,255,0.16);
  --accent:       #7c6aff;
  --accent-glow:  rgba(124,106,255,0.25);
  --accent-soft:  rgba(124,106,255,0.12);
  --accent2:      #3ee8c0;
  --accent2-glow: rgba(62,232,192,0.2);
  --accent3:      #f5b855;
  --accent3-glow: rgba(245,184,85,0.2);
  --text:         #eeeef5;
  --text-secondary:#a8a8c8;
  --muted:        #5e5e80;
  --danger:       #f5647a;
  --success:      #3ee8c0;
  --bg-overlay-a: rgba(10,11,18,0.55);
  --bg-overlay-b: rgba(10,11,18,0.45);
  --bg-overlay-c: rgba(10,11,18,0.65);
  --bg-image:     url('images/darkTheme.png');
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font);
  background:
    linear-gradient(to bottom,
      var(--bg-overlay-a) 0%,
      var(--bg-overlay-b) 40%,
      var(--bg-overlay-c) 100%
    ),
    var(--bg-image) center top / cover no-repeat fixed;
  background-color: var(--bg);
  color: var(--text);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  position: relative;
  overflow-x: hidden;
  transition: background-color 0.4s var(--ease-out), color 0.4s var(--ease-out);
}

/* ── Ambient Background ── */
body::before {
  content: '';
  position: fixed;
  top: -30%;
  left: -15%;
  width: 70%;
  height: 70%;
  background: radial-gradient(ellipse, rgba(108,92,231,0.06) 0%, transparent 65%);
  pointer-events: none;
  z-index: 0;
}

body::after {
  content: '';
  position: fixed;
  bottom: -25%;
  right: -10%;
  width: 65%;
  height: 65%;
  background: radial-gradient(ellipse, rgba(0,184,148,0.04) 0%, transparent 65%);
  pointer-events: none;
  z-index: 0;
}

/* Noise texture overlay */
.noise {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  opacity: 0.018;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)'/%3E%3C/svg%3E");
  background-repeat: repeat;
  background-size: 256px;
}

/* ── Typography ── */
h1, h2, h3 { letter-spacing: -0.035em; line-height: 1.15; }
h1 {
  font-size: clamp(2rem, 5vw, 3rem);
  font-weight: 800;
}
h2 { font-size: 1.4rem; font-weight: 700; }
p  { line-height: 1.7; color: var(--text-secondary); }

/* ── Nav ── */
[data-theme="dark"] nav {
  background: rgba(14, 15, 20, 0.7);
}

nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(250, 250, 250, 0.7);
  backdrop-filter: blur(24px) saturate(180%);
  -webkit-backdrop-filter: blur(24px) saturate(180%);
  border-bottom: 1px solid var(--border);
  padding: 0 2rem;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  text-decoration: none;
  font-weight: 800;
  font-size: 1rem;
  color: var(--text);
  letter-spacing: -0.02em;
  transition: opacity var(--transition);
}

.nav-brand:hover { opacity: 0.8; }

.nav-brand .logo-icon {
  width: 28px;
  height: 28px;
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.85rem;
  box-shadow: 0 2px 8px rgba(108,92,231,0.25);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 0.15rem;
  list-style: none;
  flex-wrap: wrap;
}

.nav-links a {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  text-decoration: none;
  color: var(--muted);
  font-size: 0.82rem;
  font-weight: 500;
  padding: 0.35rem 0.7rem;
  border-radius: 10px;
  transition: color var(--transition), background var(--transition);
  position: relative;
}

.nav-links a:hover {
  color: var(--text);
  background: var(--surface2);
}

.nav-links a.active {
  color: var(--text);
  background: var(--surface2);
}

.nav-links a.active::after {
  content: '';
  position: absolute;
  bottom: -1px;
  left: 50%;
  transform: translateX(-50%);
  width: 16px;
  height: 2px;
  background: var(--accent);
  border-radius: 2px;
}

/* ── Nav search bar ── */
.nav-search-wrap {
  position: relative;
  flex: 1;
  max-width: 320px;
}

.nav-search-row {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 0 0.75rem;
  height: 34px;
  transition: border-color 0.2s, box-shadow 0.2s;
}

.nav-search-row:focus-within {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-soft);
}

.nav-search-row .ns-icon { font-size: 0.8rem; opacity: 0.45; flex-shrink: 0; }

#nav-search-input {
  flex: 1;
  border: none;
  outline: none;
  background: transparent;
  font-family: var(--font);
  font-size: 0.82rem;
  color: var(--text);
  min-width: 0;
}

#nav-search-input::placeholder { color: var(--muted); }

#nav-search-clear {
  background: none;
  border: none;
  cursor: pointer;
  font-size: 0.75rem;
  color: var(--muted);
  padding: 0;
  line-height: 1;
  display: none;
  transition: color 0.2s;
}
#nav-search-clear:hover { color: var(--text); }
#nav-search-clear.visible { display: flex; }

.nav-search-dropdown {
  position: absolute;
  top: calc(100% + 6px);
  left: 0;
  right: 0;
  min-width: 300px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  box-shadow: 0 8px 32px rgba(0,0,0,0.14), 0 2px 8px rgba(0,0,0,0.08);
  overflow: hidden;
  z-index: 1000;
  display: none;
}

.nav-search-dropdown.open { display: block; }

.nav-search-result {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.65rem 1rem;
  text-decoration: none;
  color: var(--text);
  transition: background 0.15s;
}

.nav-search-result:hover,
.nav-search-result.active { background: var(--accent-soft); }

.nav-search-icon {
  width: 32px; height: 32px;
  border-radius: 8px;
  display: flex; align-items: center; justify-content: center;
  font-size: 0.95rem;
  background: var(--surface2);
  flex-shrink: 0;
}

.nav-search-text { flex: 1; min-width: 0; }
.nav-search-name { font-size: 0.83rem; font-weight: 600; color: var(--text); }
.nav-search-name em { font-style: normal; color: var(--accent); }
.nav-search-desc { font-size: 0.73rem; color: var(--text-secondary); margin-top: 0.05rem; }

.nav-search-noresult {
  padding: 0.85rem 1rem;
  font-size: 0.82rem;
  color: var(--muted);
  text-align: center;
}

[data-theme="dark"] .nav-search-dropdown {
  box-shadow: 0 8px 32px rgba(0,0,0,0.4), 0 2px 8px rgba(0,0,0,0.3);
}

/* ── Main layout ── */
main {
  flex: 1;
  width: 100%;
  max-width: 860px;
  margin: 0 auto;
  padding: 3.5rem 1.5rem 5rem;
  position: relative;
  z-index: 1;
}

/* ── Page header ── */
.page-header {
  margin-bottom: 2.5rem;
}

.page-header .badge {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  background: var(--accent-soft);
  color: var(--accent);
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  padding: 0.3rem 0.9rem;
  border-radius: 100px;
  border: 1px solid rgba(124,106,255,0.2);
  margin-bottom: 1.25rem;
  backdrop-filter: blur(8px);
}

.page-header h1 {
  margin-bottom: 0.6rem;
}

.page-header p {
  font-size: 1.05rem;
  max-width: 480px;
  color: var(--muted);
}

/* ── Cards / Panels ── */
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  margin-bottom: 1.25rem;
  position: relative;
  transition: border-color var(--transition), box-shadow var(--transition);
  box-shadow: 0 1px 3px rgba(0,0,0,0.04), 0 4px 12px rgba(0,0,0,0.02);
}

.card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.8), transparent);
  border-radius: var(--radius-lg) var(--radius-lg) 0 0;
}

.card:hover {
  border-color: var(--border-hover);
  box-shadow: 0 2px 6px rgba(0,0,0,0.06), 0 8px 24px rgba(0,0,0,0.04);
}

.card-title {
  font-size: 0.72rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--muted);
  margin-bottom: 1.25rem;
}

/* ── Buttons ── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-family: var(--font);
  font-size: 0.82rem;
  font-weight: 600;
  padding: 0.6rem 1.2rem;
  border-radius: 10px;
  border: 1px solid transparent;
  cursor: pointer;
  transition: all var(--transition);
  text-decoration: none;
  position: relative;
  outline: none;
}

.btn:active { transform: scale(0.97); }

.btn-primary {
  background: linear-gradient(135deg, var(--accent), #8577ed);
  color: #fff;
  border: none;
  box-shadow:
    0 1px 3px rgba(108,92,231,0.3),
    0 4px 12px rgba(108,92,231,0.15);
}

.btn-primary:hover {
  box-shadow:
    0 2px 6px rgba(108,92,231,0.35),
    0 8px 24px rgba(108,92,231,0.2);
  transform: translateY(-1px);
}

.btn-secondary {
  background: var(--surface);
  color: var(--text-secondary);
  border-color: var(--border);
  box-shadow: 0 1px 2px rgba(0,0,0,0.04);
}

.btn-secondary:hover {
  background: var(--surface2);
  color: var(--text);
  border-color: var(--border-hover);
  transform: translateY(-1px);
}

.btn-ghost {
  background: transparent;
  color: var(--muted);
  border-color: var(--border);
}

.btn-ghost:hover {
  background: var(--surface2);
  color: var(--text-secondary);
  border-color: var(--border-hover);
}

.btn-danger {
  background: transparent;
  color: var(--danger);
  border-color: rgba(245,100,122,0.3);
}

.btn-danger:hover {
  background: rgba(245,100,122,0.1);
  border-color: var(--danger);
}

.btn-group {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}

/* ── Form elements ── */
label {
  display: block;
  font-size: 0.72rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--muted);
  margin-bottom: 0.5rem;
}

input[type="number"],
input[type="text"],
select,
textarea {
  width: 100%;
  background: var(--bg);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 10px;
  font-family: var(--mono);
  font-size: 0.85rem;
  padding: 0.65rem 0.9rem;
  transition: border-color var(--transition), box-shadow var(--transition), background var(--transition);
  outline: none;
  resize: vertical;
}

input[type="number"]:hover,
input[type="text"]:hover,
select:hover,
textarea:hover {
  border-color: var(--border-hover);
}

input[type="number"]:focus,
input[type="text"]:focus,
select:focus,
textarea:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-soft);
  background: #fff;
}

input[type="range"] {
  width: 100%;
  accent-color: var(--accent);
  cursor: pointer;
}

/* ── Checkbox / Toggle ── */
.toggle-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.6rem 0;
}

.toggle-label {
  font-size: 0.875rem;
  color: var(--text-secondary);
  font-weight: 500;
  text-transform: none;
  letter-spacing: 0;
  margin: 0;
}

.toggle {
  position: relative;
  width: 44px;
  height: 24px;
  flex-shrink: 0;
}

.toggle input { opacity: 0; width: 0; height: 0; }

.toggle-slider {
  position: absolute;
  inset: 0;
  background: #d8d8e0;
  border-radius: 100px;
  cursor: pointer;
  transition: all 0.3s var(--ease-out);
  border: 1px solid rgba(0,0,0,0.06);
}

.toggle-slider::before {
  content: '';
  position: absolute;
  top: 2px;
  left: 2px;
  width: 18px;
  height: 18px;
  background: #fff;
  border-radius: 50%;
  transition: all 0.3s var(--ease-out);
  box-shadow: 0 1px 3px rgba(0,0,0,0.15);
}

.toggle input:checked + .toggle-slider {
  background: var(--accent);
  border-color: var(--accent);
  box-shadow: 0 2px 8px rgba(108,92,231,0.25);
}

.toggle input:checked + .toggle-slider::before {
  transform: translateX(20px);
  background: #fff;
}

/* ── Output / Code area ── */
.output-area {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-family: var(--mono);
  font-size: 0.82rem;
  padding: 1.25rem;
  min-height: 120px;
  color: var(--text);
  word-break: break-all;
  white-space: pre-wrap;
  position: relative;
  line-height: 1.7;
}

.output-area.scrollable {
  overflow-y: auto;
  max-height: 400px;
}

/* ── Copy feedback ── */
.copy-feedback {
  position: absolute;
  top: 0.6rem;
  right: 0.6rem;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--success);
  opacity: 0;
  transition: opacity 0.3s;
  pointer-events: none;
}

.copy-feedback.show { opacity: 1; }

/* ── Toast — Premium ── */
.toast {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  background: rgba(255,255,255,0.92);
  backdrop-filter: blur(20px) saturate(150%);
  -webkit-backdrop-filter: blur(20px) saturate(150%);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 0.7rem 1.2rem;
  border-radius: 12px;
  font-size: 0.82rem;
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  box-shadow: 0 8px 32px rgba(0,0,0,0.1), 0 1px 3px rgba(0,0,0,0.06);
  transform: translateY(24px) scale(0.95);
  opacity: 0;
  transition: all 0.35s var(--ease-out);
  z-index: 9999;
  pointer-events: none;
}

.toast.show {
  transform: translateY(0) scale(1);
  opacity: 1;
}

.toast.success { border-color: rgba(62,232,192,0.3); color: var(--success); }
.toast.error   { border-color: rgba(245,100,122,0.3); color: var(--danger); }

/* ── Row / Grid helpers ── */
.row {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  align-items: flex-end;
}

.row > * { flex: 1 1 160px; }

/* ── Divider ── */
hr {
  border: none;
  border-top: 1px solid var(--border);
  margin: 1.5rem 0;
}

/* ── Footer ── */
footer {
  text-align: center;
  padding: 2.5rem 2rem;
  font-size: 0.78rem;
  color: var(--muted);
  border-top: 1px solid var(--border);
  position: relative;
  z-index: 1;
  letter-spacing: 0.01em;
}

footer a {
  color: var(--text-secondary);
  text-decoration: none;
  transition: color var(--transition);
}

footer a:hover { color: var(--accent); }

/* ── Scrollbar ── */
::-webkit-scrollbar { width: 5px; height: 5px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: rgba(0,0,0,0.1); border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: rgba(0,0,0,0.18); }

/* ── Theme Toggle Button ── */
#theme-toggle {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 0.3rem 0.75rem;
  cursor: pointer;
  font-family: var(--font);
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--text-secondary);
  transition: all var(--transition);
  white-space: nowrap;
  flex-shrink: 0;
}
#theme-toggle:hover {
  background: var(--surface);
  border-color: var(--border-hover);
  color: var(--text);
}
.theme-icon { font-size: 0.9rem; line-height: 1; }

/* ── Dark theme component overrides ── */
[data-theme="dark"] .card {
  background: var(--surface);
  box-shadow: 0 1px 3px rgba(0,0,0,0.3), 0 4px 12px rgba(0,0,0,0.2);
}
[data-theme="dark"] .card:hover {
  box-shadow: 0 2px 6px rgba(0,0,0,0.35), 0 8px 24px rgba(0,0,0,0.25);
}
[data-theme="dark"] .btn-secondary {
  background: var(--surface2);
}
[data-theme="dark"] .btn-secondary:hover {
  background: rgba(255,255,255,0.08);
}
[data-theme="dark"] .output-area,
[data-theme="dark"] input[type="number"],
[data-theme="dark"] input[type="text"],
[data-theme="dark"] select,
[data-theme="dark"] textarea {
  background: var(--bg2);
}
[data-theme="dark"] input[type="number"]:focus,
[data-theme="dark"] input[type="text"]:focus,
[data-theme="dark"] select:focus,
[data-theme="dark"] textarea:focus {
  background: var(--surface);
}
[data-theme="dark"] .toggle-slider {
  background: rgba(255,255,255,0.12);
}
[data-theme="dark"] .toast {
  background: rgba(20, 22, 32, 0.9);
}
[data-theme="dark"] ::selection {
  background: rgba(124,106,255,0.3);
  color: #fff;
}
[data-theme="dark"] ::-webkit-scrollbar-thumb { background: rgba(255,255,255,0.1); }
[data-theme="dark"] ::-webkit-scrollbar-thumb:hover { background: rgba(255,255,255,0.18); }
[data-theme="dark"] .page-header p { color: var(--text-secondary); }
[data-theme="dark"] p { color: var(--text-secondary); }
[data-theme="dark"] .label,
[data-theme="dark"] label { color: var(--text-secondary); }
[data-theme="dark"] .json-key    { color: #89b4fa; }
[data-theme="dark"] .json-string { color: #a6e3a1; }
[data-theme="dark"] .json-number { color: #f9c46b; }
[data-theme="dark"] .json-bool   { color: #f38ba8; }
[data-theme="dark"] .hero h1 {
  background: linear-gradient(135deg, #ffffff 0%, #c8c4ff 35%, var(--accent) 70%, var(--accent2) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
[data-theme="dark"] .hero p { color: var(--text-secondary); }

.json-key    { color: #5a4fcf; }
.json-string { color: #0d865e; }
.json-number { color: #c2590a; }
.json-bool   { color: #c7365f; }
.json-null   { color: var(--muted); }

/* ── Animations ── */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(16px); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes fadeIn {
  from { opacity: 0; }
  to   { opacity: 1; }
}

@keyframes shimmer {
  0%   { background-position: -200% 0; }
  100% { background-position: 200% 0; }
}

@keyframes glow-pulse {
  0%, 100% { opacity: 0.6; }
  50%      { opacity: 1; }
}

.fade-in {
  animation: fadeInUp 0.6s var(--ease-out) both;
}

.fade-in-delay-1 { animation-delay: 0.08s; }
.fade-in-delay-2 { animation-delay: 0.16s; }
.fade-in-delay-3 { animation-delay: 0.24s; }

/* ── Selection ── */
::selection {
  background: rgba(108,92,231,0.18);
  color: var(--text);
}

/* ── Responsive ── */
@media (max-width: 600px) {
  nav { padding: 0 1rem; }
  main { padding: 2.5rem 1rem 3.5rem; }
  .row > * { flex: 1 1 100%; }
}