/* ═══════════════════════════════════════════════════════════════════
   KamiCron – Cupertino Design System
   ═══════════════════════════════════════════════════════════════════ */

/* ── CSS Custom Properties ─────────────────────────────────────── */
:root {
  --font: 'Inter', -apple-system, BlinkMacSystemFont, 'SF Pro Display', 'Segoe UI', Roboto, sans-serif;

  /* Light Mode */
  --bg: #f5f5f7;
  --bg-elevated: #ffffff;
  --bg-glass: rgba(255,255,255,0.72);
  --bg-glass-heavy: rgba(255,255,255,0.88);
  --border: rgba(0,0,0,0.08);
  --border-strong: rgba(0,0,0,0.14);

  --text-primary: #1d1d1f;
  --text-secondary: #6e6e73;
  --text-tertiary: #aeaeb2;

  --accent: #FF9500;
  --accent-hover: #E58600;
  --accent-light: rgba(255,149,0,0.1);
  --accent-gradient: linear-gradient(135deg, #FF9500 0%, #FF2D55 100%);

  --success: #34C759;
  --warning: #FF9500;
  --danger: #FF3B30;
  --info: #007AFF;

  --shadow-sm: 0 1px 3px rgba(0,0,0,0.06), 0 1px 2px rgba(0,0,0,0.04);
  --shadow-md: 0 4px 14px rgba(0,0,0,0.08), 0 2px 6px rgba(0,0,0,0.04);
  --shadow-lg: 0 12px 40px rgba(0,0,0,0.12), 0 4px 12px rgba(0,0,0,0.06);
  --shadow-accent: 0 4px 14px rgba(255,149,0,0.3);

  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 20px;
  --radius-full: 999px;

  --transition: 0.2s cubic-bezier(0.25, 0.1, 0.25, 1);
  --transition-spring: 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
}

[data-theme="dark"] {
  --bg: #000000;
  --bg-elevated: #1c1c1e;
  --bg-glass: rgba(44,44,46,0.72);
  --bg-glass-heavy: rgba(44,44,46,0.88);
  --border: rgba(255,255,255,0.08);
  --border-strong: rgba(255,255,255,0.16);
  --text-primary: #f5f5f7;
  --text-secondary: #98989d;
  --text-tertiary: #636366;
  --accent: #FF9F0A;
  --accent-hover: #FFB340;
  --accent-light: rgba(255,159,10,0.15);
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.3);
  --shadow-md: 0 4px 14px rgba(0,0,0,0.4);
  --shadow-lg: 0 12px 40px rgba(0,0,0,0.5);
  --shadow-accent: 0 4px 14px rgba(255,159,10,0.35);
}

/* ── Reset & Base ──────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

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

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text-primary);
  line-height: 1.5;
  min-height: 100vh;
  transition: background var(--transition), color var(--transition);
  overflow-x: hidden;
}

/* ── Header ────────────────────────────────────────────────────── */
.app-header {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  background: var(--bg-glass-heavy);
  backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  transition: background var(--transition);
}
.header-inner {
  max-width: 960px; margin: 0 auto;
  padding: 0 24px; height: 56px;
  display: flex; align-items: center; justify-content: space-between;
}
.header-brand {
  display: flex; align-items: center; gap: 10px;
  cursor: pointer; user-select: none;
}
.brand-icon { width: 28px; height: 28px; }
.brand-text {
  font-size: 1.125rem; font-weight: 700;
  background: var(--accent-gradient); -webkit-background-clip: text;
  -webkit-text-fill-color: transparent; background-clip: text;
}
.header-actions {
  display: flex; align-items: center; gap: 4px;
}

/* ── Theme Toggle ──────────────────────────────────────────────── */
.icon-moon { display: none; }
[data-theme="dark"] .icon-sun { display: none; }
[data-theme="dark"] .icon-moon { display: block; }

/* ── App Grid (Google-style) ──────────────────────────────────── */
.app-grid-trigger {
  position: relative;
}
.app-grid-menu {
  position: absolute; top: 48px; right: 0;
  width: 280px; padding: 16px;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  opacity: 0; visibility: hidden;
  transform: scale(0.95) translateY(-8px);
  transition: all var(--transition);
  z-index: 200;
}
.app-grid-menu.open {
  opacity: 1; visibility: visible;
  transform: scale(1) translateY(0);
}
.app-grid-title {
  font-size: 0.6875rem; font-weight: 600; text-transform: uppercase;
  letter-spacing: 0.06em; color: var(--text-tertiary);
  margin-bottom: 12px; padding: 0 4px;
}
.app-grid-list {
  display: grid; grid-template-columns: 1fr 1fr; gap: 4px;
  list-style: none;
}
.app-grid-item {
  display: flex; flex-direction: column; align-items: center; gap: 8px;
  padding: 16px 8px; border-radius: var(--radius-md);
  text-decoration: none; color: var(--text-primary);
  transition: all var(--transition);
  cursor: pointer;
}
.app-grid-item:hover {
  background: var(--accent-light);
}
.app-grid-item.active {
  background: var(--accent-light);
}
.app-grid-icon {
  width: 40px; height: 40px; border-radius: var(--radius-md);
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
}
.app-grid-label {
  font-size: 0.75rem; font-weight: 600; text-align: center;
  line-height: 1.3;
}

/* ── Buttons ───────────────────────────────────────────────────── */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 10px 22px; border: none; border-radius: var(--radius-full);
  font-family: var(--font); font-size: 0.9375rem; font-weight: 600;
  cursor: pointer; transition: all var(--transition);
  user-select: none; white-space: nowrap;
}
.btn:active { transform: scale(0.97); }

.btn-primary {
  background: var(--accent); color: #fff;
  box-shadow: var(--shadow-accent);
}
.btn-primary:hover { background: var(--accent-hover); }
.btn-primary:disabled {
  opacity: 0.4; cursor: not-allowed;
  box-shadow: none; transform: none;
}

.btn-secondary {
  background: var(--accent-light); color: var(--accent);
  border: 1px solid transparent;
}
.btn-secondary:hover { background: var(--accent); color: #fff; }

.btn-sm { padding: 7px 14px; font-size: 0.8125rem; }

.btn-icon {
  width: 40px; height: 40px; border: none; border-radius: var(--radius-md);
  background: transparent; color: var(--text-primary);
  display: flex; align-items: center; justify-content: center;
  cursor: pointer; transition: all var(--transition);
}
.btn-icon:hover { background: var(--accent-light); color: var(--accent); }
.btn-icon svg { width: 20px; height: 20px; }

/* ── Inputs ────────────────────────────────────────────────────── */
.input {
  width: 100%; padding: 10px 16px;
  background: var(--bg-elevated); color: var(--text-primary);
  border: 1.5px solid var(--border-strong); border-radius: var(--radius-md);
  font-family: var(--font); font-size: 0.9375rem;
  transition: all var(--transition); outline: none;
}
.input::placeholder { color: var(--text-tertiary); }
.input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-light);
}

/* ── Glass Card ────────────────────────────────────────────────── */
.glass-card {
  background: var(--bg-glass);
  backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
}

/* ── Views ─────────────────────────────────────────────────────── */
.app-main { padding-top: 56px; min-height: 100vh; }

.view {
  display: none; opacity: 0;
  animation: viewFadeIn 0.35s ease forwards;
}
.view.active { display: block; opacity: 1; }

@keyframes viewFadeIn {
  from { opacity: 0; transform: translateY(12px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ── Home View ─────────────────────────────────────────────────── */
.home-container {
  max-width: 720px; margin: 0 auto;
  padding: 48px 24px 64px;
}

.home-hero {
  text-align: center; margin-bottom: 48px;
}
.hero-icon-wrapper {
  display: inline-block; margin-bottom: 20px;
  animation: heroFloat 6s ease-in-out infinite;
}
.hero-icon { width: 80px; height: 80px; }
@keyframes heroFloat {
  0%, 100% { transform: translateY(0); }
  50%      { transform: translateY(-8px); }
}

.hero-title {
  font-size: 2.5rem; font-weight: 800; letter-spacing: -0.03em;
  background: var(--accent-gradient); -webkit-background-clip: text;
  -webkit-text-fill-color: transparent; background-clip: text;
  margin-bottom: 8px;
}
.hero-subtitle {
  font-size: 1.125rem; color: var(--text-secondary);
  max-width: 440px; margin: 0 auto; line-height: 1.6;
}

/* ── Search Section ────────────────────────────────────────────── */
.search-section {
  margin-bottom: 32px;
}
.search-card {
  padding: 24px;
}
.search-input-group {
  display: flex; gap: 12px; margin-bottom: 16px;
}
.search-input-group .input {
  flex: 1; font-size: 1.125rem;
  padding: 14px 20px;
  font-family: 'SF Mono', 'Fira Code', monospace;
  text-align: center; letter-spacing: 0.1em;
}
.search-input-group .btn {
  padding: 12px 28px; flex-shrink: 0;
}

.presets-container {
  display: flex; flex-wrap: wrap; gap: 8px; justify-content: center;
}
.preset-chip {
  padding: 6px 14px; border: 1px solid var(--border-strong);
  border-radius: var(--radius-full); background: transparent;
  font-family: 'SF Mono', 'Fira Code', monospace; font-size: 0.8125rem;
  color: var(--text-secondary); cursor: pointer;
  transition: all var(--transition); user-select: none;
}
.preset-chip:hover {
  border-color: var(--accent); color: var(--accent); background: var(--accent-light);
}

/* ── Tab Bar ───────────────────────────────────────────────────── */
.tab-bar {
  display: flex; gap: 4px; padding: 4px;
  background: var(--bg-glass); border-radius: var(--radius-full);
  border: 1px solid var(--border);
  margin-bottom: 24px; overflow-x: auto;
}
.tab {
  flex: 1; display: flex; align-items: center; justify-content: center; gap: 6px;
  padding: 10px 14px; border: none; border-radius: var(--radius-full);
  background: transparent; color: var(--text-secondary);
  font-family: var(--font); font-size: 0.9375rem; font-weight: 600;
  cursor: pointer; transition: all var(--transition); white-space: nowrap;
}
.tab:hover { color: var(--text-primary); }
.tab.active {
  background: var(--bg-elevated); color: var(--text-primary);
  box-shadow: var(--shadow-sm);
}

.tab-content { display: none; animation: viewFadeIn 0.25s ease forwards; }
.tab-content.active { display: block; }

/* ── Generator Form ────────────────────────────────────────────── */
.generator-form {
  display: flex; flex-direction: column; gap: 16px; margin-bottom: 24px;
}
.generator-row {
  display: flex; align-items: center; gap: 12px; flex-wrap: wrap;
}
.generator-label {
  font-size: 0.9375rem; font-weight: 600; min-width: 80px;
}
.generator-select {
  padding: 10px 16px; background: var(--bg-elevated); color: var(--text-primary);
  border: 1.5px solid var(--border-strong); border-radius: var(--radius-md);
  font-family: var(--font); font-size: 0.9375rem;
  outline: none; transition: all var(--transition); cursor: pointer;
}
.generator-select:focus {
  border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-light);
}

/* ── Result Area ───────────────────────────────────────────────── */
.result-area {
  display: none; animation: viewFadeIn 0.35s ease forwards;
}

.translation-card {
  padding: 24px; margin-bottom: 24px;
  text-align: center; background: var(--bg-glass-heavy);
  border: 1px solid var(--accent);
  box-shadow: var(--shadow-accent);
}
.translation-title {
  font-size: 0.75rem; font-weight: 700; text-transform: uppercase;
  color: var(--accent); letter-spacing: 0.05em; margin-bottom: 8px;
}
.translation-text {
  font-size: 1.5rem; font-weight: 700; color: var(--text-primary);
  line-height: 1.3;
}

/* ── Details Grid ──────────────────────────────────────────────── */
.details-grid {
  display: grid; grid-template-columns: 1fr 1fr; gap: 24px;
}

@media (max-width: 600px) {
  .details-grid { grid-template-columns: 1fr; }
}

.detail-card {
  padding: 20px;
}
.detail-title {
  font-size: 0.875rem; font-weight: 700; color: var(--text-primary);
  margin-bottom: 16px; display: flex; align-items: center; gap: 8px;
}
.detail-title svg { width: 18px; height: 18px; color: var(--accent); }

.execution-list {
  display: flex; flex-direction: column; gap: 10px;
}
.execution-item {
  display: flex; align-items: center; gap: 12px;
  font-size: 0.9375rem; font-family: 'SF Mono', 'Fira Code', monospace;
  color: var(--text-secondary); padding: 8px 12px;
  background: var(--bg); border-radius: var(--radius-sm); border: 1px solid var(--border);
}
.execution-number {
  font-size: 0.75rem; font-weight: 700; color: var(--text-tertiary);
  width: 20px; text-align: center;
}

/* Snippet Code Box */
.snippet-box {
  background: #1c1c1e; color: #f5f5f7;
  border-radius: var(--radius-md); padding: 16px;
  font-family: 'SF Mono', 'Fira Code', monospace; font-size: 0.8125rem;
  overflow-x: auto; margin-bottom: 12px; position: relative;
}
.snippet-copy {
  position: absolute; top: 8px; right: 8px;
  background: rgba(255,255,255,0.1); border: none; color: #fff;
  width: 28px; height: 28px; border-radius: var(--radius-sm);
  display: flex; align-items: center; justify-content: center;
  cursor: pointer; transition: all var(--transition);
}
.snippet-copy:hover { background: rgba(255,255,255,0.2); }
.snippet-copy svg { width: 14px; height: 14px; }

.snippet-label {
  font-size: 0.75rem; color: var(--text-tertiary); margin-bottom: 8px; font-weight: 600;
}

/* ── Loading ───────────────────────────────────────────────────── */
.loading-container {
  display: flex; flex-direction: column; align-items: center;
  justify-content: center; padding: 60px 20px; gap: 16px;
}
.loading-spinner {
  width: 36px; height: 36px;
  border: 3px solid var(--border);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}
@keyframes spin {
  to { transform: rotate(360deg); }
}

/* ── Toast ──────────────────────────────────────────────────────── */
.toast-container {
  position: fixed; bottom: 24px; left: 50%; transform: translateX(-50%);
  z-index: 1000; display: flex; flex-direction: column-reverse; gap: 8px;
  pointer-events: none;
}
.toast {
  padding: 12px 20px; border-radius: var(--radius-full);
  background: var(--bg-elevated); color: var(--text-primary);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-lg);
  font-size: 0.875rem; font-weight: 500;
  white-space: nowrap; pointer-events: auto;
  animation: toastIn 0.35s var(--transition-spring) forwards;
}
.toast.toast-out { animation: toastOut 0.25s ease forwards; }
.toast.success { border-color: var(--success); color: var(--success); }
.toast.error   { border-color: var(--danger);  color: var(--danger); }

@keyframes toastIn {
  from { opacity: 0; transform: translateY(16px) scale(0.95); }
  to   { opacity: 1; transform: translateY(0) scale(1); }
}
@keyframes toastOut {
  from { opacity: 1; transform: translateY(0) scale(1); }
  to   { opacity: 0; transform: translateY(8px) scale(0.95); }
}

/* ── History ───────────────────────────────────────────────────── */
.history-section {
  margin-top: 32px;
}
.history-title {
  font-size: 0.8125rem; font-weight: 700; text-transform: uppercase;
  letter-spacing: 0.04em; color: var(--text-tertiary);
  margin-bottom: 12px; padding: 0 4px;
}
.history-list {
  display: flex; flex-direction: column; gap: 6px;
}
.history-item {
  display: flex; align-items: center; gap: 12px;
  padding: 10px 14px;
  background: var(--bg-glass);
  border: 1px solid var(--border); border-radius: var(--radius-md);
  cursor: pointer; transition: all var(--transition);
}
.history-item:hover {
  border-color: var(--accent); background: var(--accent-light);
}
.history-item-domain {
  flex: 1; font-size: 0.875rem; font-weight: 600; font-family: 'SF Mono', 'Fira Code', monospace;
}
.history-item-time {
  font-size: 0.6875rem; color: var(--text-tertiary);
}