@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap');

/* ── Design tokens ───────────────────────────────────────────────────────── */
:root {
  --bg-base:       #0d0f14;
  --bg-surface:    #13161f;
  --bg-card:       #1a1e2a;
  --bg-glass:      rgba(26, 30, 42, 0.7);
  --accent:        #6c63ff;
  --accent-light:  #8b85ff;
  --accent-glow:   rgba(108, 99, 255, 0.25);
  --text-primary:  #f0f2ff;
  --text-secondary:#9da3be;
  --text-muted:    #5a6080;
  --border:        rgba(255,255,255,0.07);
  --border-accent: rgba(108,99,255,0.4);
  --success:       #34d399;
  --warning:       #fbbf24;
  --error:         #f87171;
  --radius-sm:     8px;
  --radius-md:     16px;
  --radius-lg:     24px;
  --shadow-card:   0 8px 32px rgba(0,0,0,0.4);
  --shadow-glow:   0 0 40px rgba(108,99,255,0.2);
  --font:          'Inter', system-ui, sans-serif;
  --transition:    0.22s cubic-bezier(0.4,0,0.2,1);
}

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

html { font-size: 16px; -webkit-text-size-adjust: 100%; }

body {
  font-family: var(--font);
  background: var(--bg-base);
  color: var(--text-primary);
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
  overflow-x: hidden;
}

/* ── Background orbs ─────────────────────────────────────────────────────── */
body::before, body::after {
  content: '';
  position: fixed;
  border-radius: 50%;
  pointer-events: none;
  z-index: 0;
}
body::before {
  width: 500px; height: 500px;
  top: -150px; left: -150px;
  background: radial-gradient(circle, rgba(108,99,255,0.12) 0%, transparent 70%);
  animation: drift 18s ease-in-out infinite alternate;
}
body::after {
  width: 400px; height: 400px;
  bottom: -100px; right: -100px;
  background: radial-gradient(circle, rgba(52,211,153,0.08) 0%, transparent 70%);
  animation: drift 24s ease-in-out infinite alternate-reverse;
}
@keyframes drift {
  from { transform: translate(0,0) scale(1); }
  to   { transform: translate(40px,30px) scale(1.1); }
}

/* ── Layout ──────────────────────────────────────────────────────────────── */
.app-wrapper {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  min-height: 100dvh;
  max-width: 600px;
  margin: 0 auto;
  width: 100%;
  padding: 0 16px;
}

/* ── Header ──────────────────────────────────────────────────────────────── */
.app-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 0 12px;
}
.logo {
  display: flex;
  align-items: center;
  gap: 10px;
}
.logo-icon {
  width: 38px; height: 38px;
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent-light) 100%);
  border-radius: var(--radius-sm);
  display: flex; align-items: center; justify-content: center;
  font-size: 20px;
  box-shadow: 0 4px 16px var(--accent-glow);
}
.logo-text {
  font-size: 1.15rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  background: linear-gradient(135deg, var(--text-primary), var(--accent-light));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.header-actions { display: flex; gap: 8px; }

/* ── Icon buttons ────────────────────────────────────────────────────────── */
.icon-btn {
  width: 38px; height: 38px;
  border: 1px solid var(--border);
  background: var(--bg-glass);
  border-radius: var(--radius-sm);
  display: flex; align-items: center; justify-content: center;
  cursor: pointer;
  font-size: 16px;
  color: var(--text-secondary);
  transition: var(--transition);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}
.icon-btn:hover, .icon-btn:active {
  background: var(--border-accent);
  color: var(--text-primary);
  border-color: var(--border-accent);
}

/* ── Main content area ───────────────────────────────────────────────────── */
.main-content { flex: 1; padding: 8px 0 24px; }

/* ── Home / idle screen ──────────────────────────────────────────────────── */
#home-screen {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 60vh;
  gap: 24px;
  text-align: center;
  padding: 16px;
}
.hero-icon {
  font-size: 64px;
  animation: float 4s ease-in-out infinite;
}
@keyframes float {
  0%,100% { transform: translateY(0); }
  50% { transform: translateY(-10px); }
}
.hero-title {
  font-size: 1.8rem;
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.2;
  background: linear-gradient(135deg, var(--text-primary) 0%, var(--accent-light) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero-sub {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.6;
  max-width: 300px;
}
.steps {
  display: flex;
  flex-direction: column;
  gap: 12px;
  width: 100%;
  max-width: 340px;
}
.step {
  display: flex;
  align-items: center;
  gap: 14px;
  background: var(--bg-glass);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 14px 16px;
  backdrop-filter: blur(8px);
  text-align: left;
}
.step-num {
  width: 28px; height: 28px;
  border-radius: 50%;
  background: var(--accent-glow);
  border: 1px solid var(--border-accent);
  display: flex; align-items: center; justify-content: center;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--accent-light);
  flex-shrink: 0;
}
.step-text { font-size: 0.88rem; color: var(--text-secondary); line-height: 1.4; }
.step-text strong { color: var(--text-primary); }

/* Manual URL input ─────────────────────────────────────────────────────────── */
.manual-section {
  width: 100%;
  max-width: 360px;
}
.manual-label {
  font-size: 0.78rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 8px;
}
.manual-row {
  display: flex;
  gap: 8px;
}
.url-input {
  flex: 1;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-family: var(--font);
  font-size: 0.9rem;
  padding: 11px 14px;
  outline: none;
  transition: var(--transition);
}
.url-input::placeholder { color: var(--text-muted); }
.url-input:focus { border-color: var(--border-accent); box-shadow: 0 0 0 3px var(--accent-glow); }

.btn-primary {
  background: linear-gradient(135deg, var(--accent), var(--accent-light));
  color: #fff;
  border: none;
  border-radius: var(--radius-sm);
  padding: 11px 18px;
  font-family: var(--font);
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  white-space: nowrap;
  box-shadow: 0 4px 16px var(--accent-glow);
}
.btn-primary:hover { transform: translateY(-1px); box-shadow: 0 6px 24px var(--accent-glow); }
.btn-primary:active { transform: translateY(0); }
.btn-primary:disabled { opacity: 0.5; cursor: not-allowed; transform: none; }

/* ── Loading screen ──────────────────────────────────────────────────────── */
#loading-screen {
  display: none;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 28px;
  min-height: 60vh;
  text-align: center;
}
#loading-screen.active { display: flex; }
.spinner-ring {
  width: 64px; height: 64px;
  border-radius: 50%;
  border: 3px solid var(--border);
  border-top-color: var(--accent);
  animation: spin 0.8s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }
.loading-url {
  font-size: 0.82rem;
  color: var(--text-muted);
  max-width: 280px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.loading-title {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-secondary);
}
.loading-steps { display: flex; flex-direction: column; gap: 8px; width: 200px; }
.loading-step {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.83rem;
  color: var(--text-muted);
  transition: color 0.3s;
}
.loading-step.done { color: var(--success); }
.loading-step.active { color: var(--text-secondary); }
.step-dot {
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--text-muted);
  transition: background 0.3s;
  flex-shrink: 0;
}
.loading-step.done  .step-dot { background: var(--success); }
.loading-step.active .step-dot { background: var(--accent); animation: pulse 1s infinite; }
@keyframes pulse { 0%,100%{opacity:1;} 50%{opacity:0.4;} }

/* ── Result card ─────────────────────────────────────────────────────────── */
#result-screen {
  display: none;
  flex-direction: column;
  gap: 16px;
}
#result-screen.active { display: flex; }
.result-card {
  background: var(--bg-glass);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 24px;
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  box-shadow: var(--shadow-card), var(--shadow-glow);
  animation: slideUp 0.35s cubic-bezier(0.4,0,0.2,1);
}
@keyframes slideUp {
  from { opacity:0; transform: translateY(20px); }
  to   { opacity:1; transform: translateY(0); }
}
.result-site {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 12px;
}
.site-favicon {
  width: 18px; height: 18px;
  border-radius: 4px;
  object-fit: contain;
  background: var(--bg-card);
}
.site-name {
  font-size: 0.78rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  font-weight: 500;
}
.cached-badge {
  margin-left: auto;
  font-size: 0.7rem;
  color: var(--success);
  background: rgba(52,211,153,0.1);
  border: 1px solid rgba(52,211,153,0.25);
  border-radius: 99px;
  padding: 2px 8px;
}
.result-title {
  font-size: 1.15rem;
  font-weight: 700;
  line-height: 1.3;
  letter-spacing: -0.02em;
  color: var(--text-primary);
  margin-bottom: 14px;
}
.divider {
  height: 1px;
  background: var(--border);
  margin-bottom: 16px;
}
.summary-label {
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--accent-light);
  font-weight: 600;
  margin-bottom: 10px;
  display: flex;
  align-items: center;
  gap: 6px;
}
.summary-label::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--border-accent);
}
.summary-text {
  font-size: 0.97rem;
  line-height: 1.75;
  color: var(--text-secondary);
}
.word-count {
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-top: 12px;
  text-align: right;
}

/* Action row ───────────────────────────────────────────────────────────────── */
.action-row {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}
.btn-outline {
  flex: 1;
  min-width: 0;
  background: var(--bg-glass);
  color: var(--text-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 11px 16px;
  font-family: var(--font);
  font-size: 0.88rem;
  font-weight: 500;
  cursor: pointer;
  transition: var(--transition);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  text-decoration: none;
  backdrop-filter: blur(8px);
}
.btn-outline:hover { border-color: var(--border-accent); color: var(--text-primary); }
.btn-outline.copy-btn.copied {
  border-color: var(--success);
  color: var(--success);
}

/* ── Error screen ────────────────────────────────────────────────────────── */
#error-screen {
  display: none;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 16px;
  padding: 48px 16px;
}
#error-screen.active { display: flex; }
.error-icon { font-size: 48px; }
.error-title { font-size: 1.2rem; font-weight: 700; }
.error-message { font-size: 0.9rem; color: var(--text-secondary); line-height: 1.6; max-width: 320px; }

/* ── History list ────────────────────────────────────────────────────────── */
#history-section {
  margin-top: 8px;
}
.section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 12px;
}
.section-title {
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-muted);
  font-weight: 600;
}
.clear-btn {
  font-size: 0.75rem;
  color: var(--text-muted);
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px 8px;
  border-radius: 4px;
  transition: var(--transition);
}
.clear-btn:hover { color: var(--error); }
.history-list { display: flex; flex-direction: column; gap: 8px; }
.history-item {
  background: var(--bg-glass);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 14px 16px;
  cursor: pointer;
  transition: var(--transition);
  backdrop-filter: blur(8px);
  display: flex;
  align-items: flex-start;
  gap: 12px;
}
.history-item:hover { border-color: var(--border-accent); transform: translateX(3px); }
.history-favicon {
  width: 18px; height: 18px;
  border-radius: 4px;
  object-fit: contain;
  background: var(--bg-card);
  flex-shrink: 0;
  margin-top: 2px;
}
.history-info { flex: 1; min-width: 0; }
.history-title {
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--text-primary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  margin-bottom: 3px;
}
.history-snippet {
  font-size: 0.78rem;
  color: var(--text-muted);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* ── Settings panel ──────────────────────────────────────────────────────── */
#settings-panel {
  display: none;
  flex-direction: column;
  gap: 20px;
}
#settings-panel.active { display: flex; }
.settings-card {
  background: var(--bg-glass);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 20px;
  backdrop-filter: blur(16px);
}
.settings-group-title {
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--accent-light);
  font-weight: 600;
  margin-bottom: 16px;
}
.setting-row {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-bottom: 16px;
}
.setting-row:last-child { margin-bottom: 0; }
.setting-label {
  font-size: 0.88rem;
  font-weight: 500;
  color: var(--text-primary);
}
.setting-hint {
  font-size: 0.78rem;
  color: var(--text-muted);
  line-height: 1.4;
}
.setting-input {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-family: var(--font);
  font-size: 0.9rem;
  padding: 11px 14px;
  outline: none;
  transition: var(--transition);
  width: 100%;
}
.setting-input:focus { border-color: var(--border-accent); box-shadow: 0 0 0 3px var(--accent-glow); }
.setting-input::placeholder { color: var(--text-muted); }
.btn-save {
  width: 100%;
  margin-top: 4px;
}
.info-row {
  display: flex;
  justify-content: space-between;
  font-size: 0.82rem;
  padding: 6px 0;
  border-bottom: 1px solid var(--border);
  color: var(--text-secondary);
}
.info-row:last-child { border-bottom: none; }
.info-row span:first-child { color: var(--text-muted); }

/* ── Install banner ──────────────────────────────────────────────────────── */
#install-banner {
  display: none;
  background: linear-gradient(135deg, rgba(108,99,255,0.2), rgba(52,211,153,0.1));
  border: 1px solid var(--border-accent);
  border-radius: var(--radius-md);
  padding: 14px 16px;
  gap: 12px;
  align-items: center;
  margin-bottom: 16px;
  animation: slideDown 0.3s ease;
}
#install-banner.visible { display: flex; }
@keyframes slideDown {
  from { opacity:0; transform: translateY(-10px); }
  to   { opacity:1; transform: translateY(0); }
}
.install-text { flex: 1; font-size: 0.85rem; color: var(--text-secondary); }
.install-text strong { color: var(--text-primary); display: block; margin-bottom: 2px; }

/* ── Transitions between screens ─────────────────────────────────────────── */
.screen { display: none; }
.screen.active { display: flex; flex-direction: column; }

/* ── Responsive tweaks ───────────────────────────────────────────────────── */
@media (min-width: 480px) {
  .hero-title { font-size: 2.2rem; }
  .result-card { padding: 32px; }
}