/* ================================================================
   COSPLAY STUDIO — Global Styles
   Black-Purple · Minimal · Cold · High-End
   ================================================================ */

:root {
  /* Background layers */
  --c-bg: #08060d;
  --c-surface: #0f0c17;
  --c-surface-2: #15101f;
  --c-card: #1a1428;
  --c-card-hover: #221a33;
  --c-border: #2a2040;
  --c-border-hover: #3d2e5c;

  /* Accent — Neon Purple */
  --c-accent: #9d4edd;
  --c-accent-bright: #b975ff;
  --c-accent-dim: #6a3a96;
  --c-accent-glow: rgba(157, 78, 221, 0.35);

  /* Text */
  --c-text: #ffffff;
  --c-text-2: #b8b0cc;
  --c-text-3: #7a7090;
  --c-text-4: #4a4460;

  /* Danger */
  --c-danger: #e63946;
  --c-danger-dim: #5a1a22;

  /* Success */
  --c-success: #4ade80;

  /* Sizing */
  --nav-h: 56px;
  --sidebar-w: 240px;
  --panel-w: 280px;
  --radius: 6px;
  --radius-sm: 4px;

  /* Transitions */
  --t-fast: 0.15s ease;
  --t-med: 0.3s ease;

  /* Fonts */
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-display: 'Oswald', 'Inter', sans-serif;
}

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

html, body {
  height: 100%;
  overflow-x: hidden;
}

body {
  background: var(--c-bg);
  color: var(--c-text);
  font-family: var(--font-sans);
  font-size: 14px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* ===================== Background Layers ===================== */
#bg-layer {
  position: fixed;
  inset: 0;
  z-index: 0;
  background-image: radial-gradient(rgba(157,78,221,0.06) 1px, transparent 1px);
  background-size: 24px 24px;
  transition: opacity 0.3s ease, filter 0.3s ease;
}

#bg-overlay {
  position: fixed;
  inset: 0;
  z-index: 0;
  background:
    radial-gradient(ellipse at 20% 0%, rgba(60, 20, 90, 0.25), transparent 50%),
    radial-gradient(ellipse at 80% 100%, rgba(40, 15, 70, 0.2), transparent 50%);
  pointer-events: none;
}

#bg-layer.has-image {
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  background-image: none;
}
#bg-layer.has-image::after {
  content: none;
}

/* ===================== Top Navigation ===================== */
#top-nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--nav-h);
  background: rgba(8, 6, 13, 0.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--c-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 24px;
  z-index: 1000;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 16px;
  letter-spacing: 2px;
  color: var(--c-text);
}
.nav-logo .logo-icon {
  color: var(--c-accent);
  font-size: 18px;
}

.nav-links {
  display: flex;
  gap: 4px;
}

.nav-link {
  font-family: var(--font-sans);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 2px;
  color: var(--c-text-3);
  text-decoration: none;
  padding: 8px 16px;
  border-radius: var(--radius-sm);
  transition: all var(--t-fast);
  position: relative;
}
.nav-link:hover {
  color: var(--c-text-2);
}
.nav-link.active {
  color: var(--c-text);
  background: var(--c-card);
}
.nav-link.active::after {
  content: '';
  position: absolute;
  bottom: 2px; left: 16px; right: 16px;
  height: 2px;
  background: var(--c-accent);
  border-radius: 1px;
}

.nav-right {
  display: flex;
  gap: 8px;
}

.nav-btn {
  display: flex;
  align-items: center;
  gap: 6px;
  background: transparent;
  border: 1px solid var(--c-border);
  color: var(--c-text-3);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 1.5px;
  padding: 6px 12px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all var(--t-fast);
}
.nav-btn:hover {
  border-color: var(--c-accent);
  color: var(--c-accent-bright);
}
.nav-btn.active {
  border-color: var(--c-accent);
  color: var(--c-accent-bright);
  background: var(--c-accent-glow);
}

/* ===================== Dropdown Panels ===================== */
.dropdown-panel {
  position: fixed;
  top: var(--nav-h);
  right: 24px;
  width: 300px;
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
  z-index: 999;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-8px);
  transition: all var(--t-fast);
  box-shadow: 0 16px 48px rgba(0,0,0,0.6);
}
.dropdown-panel.show {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

#bg-panel { right: 24px; }
#music-panel { right: 24px; }

.panel-header {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 2px;
  color: var(--c-text-3);
  padding: 12px 16px;
  border-bottom: 1px solid var(--c-border);
}

.panel-body {
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.panel-label {
  font-size: 11px;
  font-weight: 600;
  color: var(--c-text-3);
  letter-spacing: 1px;
  text-transform: uppercase;
}

.panel-label-sm {
  font-size: 11px;
  color: var(--c-text-2);
  min-width: 50px;
}

.panel-row {
  display: flex;
  align-items: center;
  gap: 10px;
}

.panel-val {
  font-size: 11px;
  color: var(--c-accent-bright);
  min-width: 40px;
  text-align: right;
  font-weight: 600;
}

.panel-slider {
  flex: 1;
  -webkit-appearance: none;
  appearance: none;
  height: 4px;
  background: var(--c-border);
  border-radius: 2px;
  outline: none;
  cursor: pointer;
}
.panel-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--c-accent);
  cursor: pointer;
  border: 2px solid var(--c-bg);
  box-shadow: 0 0 6px var(--c-accent-glow);
}
.panel-slider::-moz-range-thumb {
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--c-accent);
  cursor: pointer;
  border: 2px solid var(--c-bg);
}

.panel-btn {
  background: var(--c-card);
  border: 1px solid var(--c-border);
  color: var(--c-text-2);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 1.5px;
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all var(--t-fast);
  text-transform: uppercase;
  text-align: center;
}
.panel-btn:hover {
  background: var(--c-card-hover);
  border-color: var(--c-border-hover);
  color: var(--c-text);
}
.panel-btn-primary {
  background: var(--c-accent);
  border-color: var(--c-accent);
  color: #fff;
}
.panel-btn-primary:hover {
  background: var(--c-accent-bright);
  border-color: var(--c-accent-bright);
  box-shadow: 0 0 12px var(--c-accent-glow);
}
.panel-btn-danger {
  border-color: var(--c-danger-dim);
  color: #e88;
}
.panel-btn-danger:hover {
  background: rgba(230,57,70,0.1);
  border-color: var(--c-danger);
  color: var(--c-danger);
}

/* Music list */
.music-list {
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.music-item {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 10px;
  background: var(--c-card);
  border-radius: var(--radius-sm);
  border: 1px solid var(--c-border);
  font-size: 12px;
  color: var(--c-text-2);
  cursor: pointer;
  transition: all var(--t-fast);
}
.music-item:hover { border-color: var(--c-border-hover); }
.music-item.playing { border-color: var(--c-accent); color: var(--c-accent-bright); }
.music-item-name { flex: 1; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

/* ===================== Pages ===================== */
.page {
  display: none;
  position: relative;
  z-index: 1;
  min-height: 100vh;
  padding-top: var(--nav-h);
}
.page.active {
  display: block;
}

/* ===================== Shared Components ===================== */
.hidden-input { display: none; }

.hero-cta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--c-accent);
  color: #fff;
  border: none;
  font-family: var(--font-sans);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 2px;
  padding: 12px 24px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all var(--t-fast);
  text-transform: uppercase;
}
.hero-cta:hover {
  background: var(--c-accent-bright);
  box-shadow: 0 0 20px var(--c-accent-glow);
  transform: translateY(-1px);
}
.hero-cta.small { padding: 8px 16px; font-size: 11px; }

.icon-btn {
  background: var(--c-card);
  border: 1px solid var(--c-border);
  color: var(--c-text-2);
  width: 32px;
  height: 32px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  font-size: 18px;
  transition: all var(--t-fast);
}
.icon-btn:hover {
  border-color: var(--c-accent);
  color: var(--c-accent-bright);
}

/* ===================== Toast ===================== */
.toast {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%) translateY(60px);
  background: var(--c-surface);
  border: 1px solid var(--c-accent);
  color: var(--c-text);
  font-size: 13px;
  padding: 12px 24px;
  border-radius: var(--radius);
  z-index: 9999;
  opacity: 0;
  transition: all 0.3s ease;
  box-shadow: 0 8px 24px rgba(0,0,0,0.5), 0 0 12px var(--c-accent-glow);
  pointer-events: none;
}
.toast.show {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

/* ===================== Modal ===================== */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.7);
  backdrop-filter: blur(4px);
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 2000;
}
.modal-overlay.show { display: flex; }

.modal-box {
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
  width: 420px;
  box-shadow: 0 24px 64px rgba(0,0,0,0.7);
}
.modal-header {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 2px;
  color: var(--c-text-3);
  padding: 16px;
  border-bottom: 1px solid var(--c-border);
}
.modal-body { padding: 20px 16px; }
.modal-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 14px;
}
.modal-row label {
  font-size: 12px;
  font-weight: 600;
  color: var(--c-text-2);
  letter-spacing: 1px;
}
.modal-row select {
  background: var(--c-card);
  border: 1px solid var(--c-border);
  color: var(--c-text);
  font-size: 12px;
  padding: 8px 12px;
  border-radius: var(--radius-sm);
  outline: none;
  cursor: pointer;
}
.modal-row select:focus { border-color: var(--c-accent); }

.modal-footer {
  display: flex;
  gap: 8px;
  padding: 16px;
  border-top: 1px solid var(--c-border);
  justify-content: flex-end;
}

input[type="text"], input[type="number"], input[type="date"], textarea, select {
  background: var(--c-card);
  border: 1px solid var(--c-border);
  color: var(--c-text);
  font-family: var(--font-sans);
  font-size: 13px;
  padding: 8px 12px;
  border-radius: var(--radius-sm);
  outline: none;
  transition: border-color var(--t-fast);
  width: 100%;
}
input[type="text"]:focus, input[type="number"]:focus, input[type="date"]:focus, textarea:focus, select:focus {
  border-color: var(--c-accent);
}
textarea { resize: vertical; min-height: 60px; }

/* Scrollbar */
::-webkit-scrollbar { width: 8px; height: 8px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--c-border); border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: var(--c-border-hover); }

/* Panel hint text */
.panel-hint {
  color: var(--c-text-3);
  font-size: 12px;
  text-align: center;
  padding: 20px 0;
}
.hint-text { color: var(--c-text-4); font-size: 12px; }

/* Small variants */
.small { font-size: 11px; padding: 6px 12px; }

/* Responsive */
@media (max-width: 1024px) {
  .nav-links { gap: 0; }
  .nav-link { padding: 6px 8px; font-size: 10px; }
  .nav-btn span { display: none; }
}