@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800;900&display=swap');

:root {
  --primary: #6C5CE7; --primary-light: #a29bfe; --primary-dark: #5341d6;
  --accent: #00cec9; --accent-light: #81ecec;
  --bg-dark: #0a0a1a; --bg-card: #1a1a2e; --bg-elevated: #16213e;
  --glass: rgba(255,255,255,0.04); --glass-border: rgba(255,255,255,0.08);
  --text: #e8e8f0; --text-muted: #8888aa; --text-dim: #555570;
  --success: #00b894; --warning: #fdcb6e; --error: #e17055;
  --radius: 12px; --radius-sm: 8px; --radius-lg: 20px;
  --shadow: 0 8px 32px rgba(0,0,0,0.4);
  --transition: all 0.3s cubic-bezier(0.4,0,0.2,1);
}

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

html { scroll-behavior: smooth; }

body {
  font-family: 'Inter', -apple-system, sans-serif;
  background: var(--bg-dark); color: var(--text);
  line-height: 1.6; overflow-x: hidden;
  min-height: 100vh;
}

/* === SCROLLBAR === */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--primary); border-radius: 3px; }

/* === GLASS CARD === */
.glass { background: var(--glass); border: 1px solid var(--glass-border); backdrop-filter: blur(20px); border-radius: var(--radius); }

/* === BUTTONS === */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 10px 20px; border: none; border-radius: var(--radius-sm);
  font-family: inherit; font-size: 14px; font-weight: 600;
  cursor: pointer; transition: var(--transition); text-decoration: none;
}
.btn-primary { background: linear-gradient(135deg, var(--primary), var(--primary-light)); color: #fff; }
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 8px 25px rgba(108,92,231,0.4); }
.btn-ghost { background: var(--glass); color: var(--text); border: 1px solid var(--glass-border); }
.btn-ghost:hover { background: rgba(255,255,255,0.1); }
.btn-accent { background: linear-gradient(135deg, var(--accent), var(--accent-light)); color: #0a0a1a; }
.btn-sm { padding: 6px 14px; font-size: 13px; }
.btn-icon { width: 40px; height: 40px; padding: 0; display: flex; align-items: center; justify-content: center; border-radius: 50%; }

/* === INPUTS === */
.input-field {
  width: 100%; padding: 12px 16px;
  background: var(--glass); border: 1px solid var(--glass-border);
  border-radius: var(--radius-sm); color: var(--text);
  font-family: inherit; font-size: 14px;
  transition: var(--transition); outline: none;
}
.input-field:focus { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(108,92,231,0.15); }
.input-field::placeholder { color: var(--text-dim); }

/* === TOAST === */
.toast-container { position: fixed; top: 20px; right: 20px; z-index: 10000; display: flex; flex-direction: column; gap: 8px; }
.toast {
  padding: 14px 20px; border-radius: var(--radius-sm);
  background: var(--bg-card); border: 1px solid var(--glass-border);
  color: var(--text); font-size: 14px; min-width: 280px;
  animation: slideIn 0.3s ease; box-shadow: var(--shadow);
}
.toast.success { border-left: 4px solid var(--success); }
.toast.error { border-left: 4px solid var(--error); }
.toast.info { border-left: 4px solid var(--primary); }
@keyframes slideIn { from { transform: translateX(100%); opacity: 0; } to { transform: translateX(0); opacity: 1; } }
@keyframes slideOut { from { opacity: 1; } to { transform: translateX(100%); opacity: 0; } }

/* === MODAL === */
.modal-overlay {
  position: fixed; inset: 0; background: rgba(0,0,0,0.7);
  backdrop-filter: blur(4px); z-index: 5000;
  display: flex; align-items: center; justify-content: center;
  opacity: 0; visibility: hidden; transition: var(--transition);
}
.modal-overlay.active { opacity: 1; visibility: visible; }
.modal {
  background: var(--bg-card); border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg); padding: 32px;
  width: 90%; max-width: 440px; position: relative;
  transform: translateY(20px); transition: var(--transition);
}
.modal-overlay.active .modal { transform: translateY(0); }
.modal h2 { font-size: 24px; margin-bottom: 8px; background: linear-gradient(135deg, var(--primary-light), var(--accent)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; }
.modal p.subtitle { color: var(--text-muted); margin-bottom: 24px; font-size: 14px; }
.modal .close-btn { position: absolute; top: 16px; right: 16px; background: none; border: none; color: var(--text-muted); font-size: 24px; cursor: pointer; }
.form-group { margin-bottom: 16px; }
.form-group label { display: block; font-size: 13px; font-weight: 500; color: var(--text-muted); margin-bottom: 6px; }

/* === LANDING PAGE === */
.landing-nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  padding: 16px 40px; display: flex; align-items: center; justify-content: space-between;
  background: rgba(10,10,26,0.8); backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--glass-border);
}
.logo { font-size: 22px; font-weight: 800; display: flex; align-items: center; gap: 10px; }
.logo-icon { width: 36px; height: 36px; background: linear-gradient(135deg, var(--primary), var(--accent)); border-radius: 10px; display: flex; align-items: center; justify-content: center; font-size: 18px; }
.logo span { background: linear-gradient(135deg, var(--primary-light), var(--accent)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; }
.nav-actions { display: flex; gap: 12px; align-items: center; }

.hero {
  min-height: 100vh; display: flex; flex-direction: column;
  align-items: center; justify-content: center; text-align: center;
  padding: 120px 20px 80px; position: relative; overflow: hidden;
}
.hero::before {
  content: ''; position: absolute; width: 600px; height: 600px;
  background: radial-gradient(circle, rgba(108,92,231,0.15), transparent 70%);
  top: 10%; left: 50%; transform: translateX(-50%); pointer-events: none;
}
.hero::after {
  content: ''; position: absolute; width: 400px; height: 400px;
  background: radial-gradient(circle, rgba(0,206,201,0.1), transparent 70%);
  bottom: 10%; right: 10%; pointer-events: none;
}
.hero h1 { font-size: clamp(36px, 6vw, 64px); font-weight: 900; line-height: 1.1; margin-bottom: 20px; position: relative; }
.hero h1 .gradient { background: linear-gradient(135deg, var(--primary-light), var(--accent-light)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; }
.hero .tagline { font-size: clamp(16px, 2vw, 20px); color: var(--text-muted); max-width: 600px; margin-bottom: 40px; }
.hero-cta { display: flex; gap: 16px; flex-wrap: wrap; justify-content: center; }
.hero-demo {
  margin-top: 60px; width: 90%; max-width: 900px;
  border-radius: var(--radius-lg); border: 1px solid var(--glass-border);
  overflow: hidden; box-shadow: 0 20px 60px rgba(0,0,0,0.5);
  background: var(--bg-card); position: relative;
}
.hero-demo-bar { padding: 12px 16px; display: flex; align-items: center; gap: 8px; border-bottom: 1px solid var(--glass-border); }
.demo-dot { width: 12px; height: 12px; border-radius: 50%; }
.demo-dot:nth-child(1) { background: #e17055; } .demo-dot:nth-child(2) { background: #fdcb6e; } .demo-dot:nth-child(3) { background: #00b894; }
.hero-demo-content { padding: 40px; display: flex; gap: 20px; min-height: 250px; }
.demo-left, .demo-right { flex: 1; }
.demo-left .line { height: 12px; background: rgba(255,255,255,0.06); border-radius: 6px; margin-bottom: 10px; }
.demo-left .line:nth-child(1) { width: 80%; } .demo-left .line:nth-child(2) { width: 60%; }
.demo-left .line:nth-child(3) { width: 90%; } .demo-left .line:nth-child(4) { width: 45%; }
.demo-left .line:nth-child(5) { width: 75%; }
.demo-right { background: rgba(108,92,231,0.08); border-radius: var(--radius); padding: 20px; border: 1px solid rgba(108,92,231,0.15); }
.demo-right .ai-label { font-size: 11px; text-transform: uppercase; letter-spacing: 2px; color: var(--primary-light); margin-bottom: 12px; }
.demo-right .line { height: 10px; background: rgba(108,92,231,0.15); border-radius: 5px; margin-bottom: 8px; }
.demo-right .line:nth-child(2) { width: 85%; } .demo-right .line:nth-child(3) { width: 70%; } .demo-right .line:nth-child(4) { width: 90%; }

.features {
  padding: 80px 40px; display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px; max-width: 1200px; margin: 0 auto;
}
.feature-card {
  padding: 32px; border-radius: var(--radius-lg);
  background: var(--glass); border: 1px solid var(--glass-border);
  transition: var(--transition);
}
.feature-card:hover { transform: translateY(-4px); border-color: rgba(108,92,231,0.3); }
.feature-icon { width: 48px; height: 48px; border-radius: 14px; display: flex; align-items: center; justify-content: center; font-size: 24px; margin-bottom: 16px; }
.feature-card h3 { font-size: 18px; margin-bottom: 8px; }
.feature-card p { color: var(--text-muted); font-size: 14px; }

/* === APP PAGE === */
.app-container { display: flex; flex-direction: column; height: 100vh; }

.app-topbar {
  display: flex; align-items: center; gap: 12px;
  padding: 10px 16px; background: var(--bg-card);
  border-bottom: 1px solid var(--glass-border); flex-shrink: 0;
}
.app-topbar .logo { font-size: 18px; }
.url-bar {
  flex: 1; display: flex; align-items: center; gap: 8px;
  background: var(--glass); border: 1px solid var(--glass-border);
  border-radius: 100px; padding: 6px 6px 6px 16px;
  transition: var(--transition);
}
.url-bar:focus-within { border-color: var(--primary); }
.url-bar input {
  flex: 1; background: none; border: none; color: var(--text);
  font-family: inherit; font-size: 14px; outline: none;
}
.url-bar input::placeholder { color: var(--text-dim); }
.url-bar .go-btn {
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  border: none; color: #fff; padding: 8px 20px; border-radius: 100px;
  font-weight: 600; font-size: 13px; cursor: pointer; transition: var(--transition);
  font-family: inherit;
}
.url-bar .go-btn:hover { box-shadow: 0 4px 15px rgba(108,92,231,0.4); }
.user-menu-btn {
  width: 36px; height: 36px; border-radius: 50%; border: 2px solid var(--primary);
  background: linear-gradient(135deg, var(--primary), var(--accent));
  color: #fff; font-weight: 700; font-size: 14px; cursor: pointer;
  display: flex; align-items: center; justify-content: center;
}

.app-body { display: flex; flex: 1; overflow: hidden; }

/* Content Panel */
.content-panel {
  flex: 1; overflow-y: auto; padding: 0;
  background: var(--bg-dark); position: relative;
}
.content-empty {
  display: flex; flex-direction: column; align-items: center;
  justify-content: center; height: 100%; text-align: center; padding: 40px;
}
.content-empty .empty-icon { font-size: 64px; margin-bottom: 20px; opacity: 0.3; }
.content-empty h2 { font-size: 24px; margin-bottom: 8px; color: var(--text-muted); }
.content-empty p { color: var(--text-dim); max-width: 400px; }
.content-loaded { padding: 32px 40px; max-width: 800px; margin: 0 auto; }
.content-loaded h1, .content-loaded h2, .content-loaded h3 { margin: 24px 0 12px; color: var(--text); }
.content-loaded p { margin-bottom: 16px; line-height: 1.8; color: var(--text); }
.content-loaded img { max-width: 100%; border-radius: var(--radius-sm); margin: 16px 0; }
.content-loaded a { color: var(--primary-light); }
.content-meta {
  padding: 16px 20px; margin-bottom: 24px;
  background: var(--glass); border-radius: var(--radius);
  border: 1px solid var(--glass-border); display: flex;
  align-items: center; gap: 12px;
}
.content-meta img { width: 20px; height: 20px; border-radius: 4px; }
.content-meta .meta-title { font-weight: 600; flex: 1; }
.content-meta .meta-words { font-size: 12px; color: var(--text-muted); }
.content-loading {
  display: flex; flex-direction: column; align-items: center;
  justify-content: center; height: 100%; gap: 16px;
}
.spinner {
  width: 40px; height: 40px; border: 3px solid var(--glass-border);
  border-top-color: var(--primary); border-radius: 50%;
  animation: spin 0.8s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* View mode bar */
.view-mode-bar {
  display: flex; align-items: center; justify-content: space-between;
  padding: 6px 12px; background: var(--bg-card);
  border-bottom: 1px solid var(--glass-border); flex-shrink: 0;
}
.view-mode-tabs { display: flex; gap: 4px; }
.view-tab {
  padding: 6px 14px; background: none; border: 1px solid transparent;
  border-radius: 100px; color: var(--text-muted); font-size: 12px;
  font-family: inherit; font-weight: 500; cursor: pointer;
  transition: var(--transition);
}
.view-tab.active { background: var(--primary); color: #fff; border-color: var(--primary); }
.view-tab:hover:not(.active) { background: var(--glass); }
.view-meta { font-size: 12px; color: var(--text-dim); display: flex; align-items: center; gap: 8px; }
.view-meta img { width: 16px; height: 16px; border-radius: 3px; }

/* Iframe browser view */
.content-iframe {
  width: 100%; flex: 1; border: none; background: #fff;
  min-height: 0;
}
.content-panel { display: flex; flex-direction: column; }

/* AI Panel */
.ai-panel {
  width: 380px; background: var(--bg-card);
  border-left: 1px solid var(--glass-border);
  display: flex; flex-direction: column; flex-shrink: 0;
  transition: var(--transition);
}
.ai-panel.collapsed { width: 0; overflow: hidden; border: none; }
.ai-toggle {
  position: absolute; right: 380px; top: 50%; transform: translateY(-50%);
  z-index: 10; background: var(--bg-card); border: 1px solid var(--glass-border);
  border-right: none; border-radius: 8px 0 0 8px; padding: 12px 6px;
  cursor: pointer; color: var(--text-muted); font-size: 16px;
  transition: var(--transition);
}
.ai-panel.collapsed ~ .ai-toggle { right: 0; }

.ai-header {
  padding: 16px; border-bottom: 1px solid var(--glass-border);
  display: flex; align-items: center; gap: 10px;
}
.ai-header h3 { flex: 1; font-size: 15px; display: flex; align-items: center; gap: 8px; }
.ai-header .ai-dot { width: 8px; height: 8px; background: var(--success); border-radius: 50%; animation: pulse 2s infinite; }
@keyframes pulse { 0%, 100% { opacity: 1; } 50% { opacity: 0.4; } }

.ai-actions {
  padding: 12px; display: grid; grid-template-columns: 1fr 1fr;
  gap: 8px; border-bottom: 1px solid var(--glass-border);
}
.ai-action-btn {
  display: flex; align-items: center; gap: 6px;
  padding: 10px 12px; background: var(--glass);
  border: 1px solid var(--glass-border); border-radius: var(--radius-sm);
  color: var(--text); font-size: 13px; cursor: pointer;
  transition: var(--transition); font-family: inherit;
}
.ai-action-btn:hover { background: rgba(108,92,231,0.15); border-color: var(--primary); }
.ai-action-btn.active { background: rgba(108,92,231,0.2); border-color: var(--primary); }

.ai-chat {
  flex: 1; overflow-y: auto; padding: 16px;
  display: flex; flex-direction: column; gap: 12px;
}
.ai-message {
  padding: 12px 16px; border-radius: var(--radius);
  font-size: 14px; line-height: 1.7; max-width: 95%;
  animation: fadeUp 0.3s ease;
}
@keyframes fadeUp { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: translateY(0); } }
.ai-message.user {
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: #fff; align-self: flex-end; border-bottom-right-radius: 4px;
}
.ai-message.assistant {
  background: var(--glass); border: 1px solid var(--glass-border);
  align-self: flex-start; border-bottom-left-radius: 4px;
}
.ai-message.assistant h1,.ai-message.assistant h2,.ai-message.assistant h3 { margin: 12px 0 6px; font-size: 15px; color: var(--primary-light); }
.ai-message.assistant ul,.ai-message.assistant ol { padding-left: 20px; margin: 8px 0; }
.ai-message.assistant li { margin-bottom: 4px; }
.ai-message.assistant code { background: rgba(0,0,0,0.3); padding: 2px 6px; border-radius: 4px; font-size: 13px; }
.ai-message.assistant pre { background: rgba(0,0,0,0.3); padding: 12px; border-radius: 8px; overflow-x: auto; margin: 8px 0; }
.ai-message.assistant pre code { background: none; padding: 0; }
.ai-message.assistant strong { color: var(--accent-light); }
.ai-message.typing::after {
  content: ''; display: inline-block; width: 6px; height: 16px;
  background: var(--primary-light); margin-left: 4px;
  animation: blink 0.8s infinite; vertical-align: middle;
}
@keyframes blink { 0%, 100% { opacity: 1; } 50% { opacity: 0; } }

.ai-welcome { text-align: center; padding: 40px 20px; color: var(--text-muted); }
.ai-welcome .welcome-icon { font-size: 48px; margin-bottom: 12px; }
.ai-welcome h4 { margin-bottom: 8px; color: var(--text); }

.ai-input-area {
  padding: 12px; border-top: 1px solid var(--glass-border);
  display: flex; gap: 8px;
}
.ai-input-area textarea {
  flex: 1; background: var(--glass); border: 1px solid var(--glass-border);
  border-radius: var(--radius-sm); padding: 10px 14px; color: var(--text);
  font-family: inherit; font-size: 14px; resize: none; outline: none;
  min-height: 44px; max-height: 120px;
  transition: var(--transition);
}
.ai-input-area textarea:focus { border-color: var(--primary); }
.ai-input-area .send-btn {
  width: 44px; height: 44px; border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  border: none; color: #fff; font-size: 18px; cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  transition: var(--transition); flex-shrink: 0;
}
.ai-input-area .send-btn:hover { transform: scale(1.05); }
.ai-input-area .send-btn:disabled { opacity: 0.5; cursor: not-allowed; }

/* Selection tooltip */
.selection-tooltip {
  position: absolute; background: var(--bg-card); border: 1px solid var(--glass-border);
  border-radius: var(--radius-sm); padding: 6px; display: none;
  gap: 4px; box-shadow: var(--shadow); z-index: 100;
}
.selection-tooltip.visible { display: flex; }
.selection-tooltip button {
  padding: 6px 10px; background: none; border: none; color: var(--text);
  font-size: 12px; cursor: pointer; border-radius: 6px; white-space: nowrap;
  font-family: inherit; transition: var(--transition);
}
.selection-tooltip button:hover { background: rgba(108,92,231,0.2); }

/* History sidebar */
.history-panel {
  position: fixed; top: 0; left: -360px; width: 360px; height: 100vh;
  background: var(--bg-card); border-right: 1px solid var(--glass-border);
  z-index: 200; transition: var(--transition); display: flex; flex-direction: column;
}
.history-panel.open { left: 0; }
.history-backdrop { position: fixed; inset: 0; background: rgba(0,0,0,0.5); z-index: 199; display: none; }
.history-backdrop.open { display: block; }
.history-header { padding: 20px; border-bottom: 1px solid var(--glass-border); display: flex; align-items: center; gap: 12px; }
.history-header h3 { flex: 1; }
.history-list { flex: 1; overflow-y: auto; padding: 12px; }
.history-item {
  display: flex; align-items: center; gap: 12px; padding: 12px;
  border-radius: var(--radius-sm); cursor: pointer; transition: var(--transition);
  margin-bottom: 4px;
}
.history-item:hover { background: var(--glass); }
.history-item img { width: 20px; height: 20px; border-radius: 4px; }
.history-item .hi-title { font-size: 14px; font-weight: 500; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; flex: 1; }
.history-item .hi-time { font-size: 11px; color: var(--text-dim); }

/* Setup steps */
.setup-steps {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 24px; text-align: center;
}
.setup-step {
  padding: 32px 24px; border-radius: var(--radius-lg);
  background: var(--glass); border: 1px solid var(--glass-border);
}
.step-num {
  width: 40px; height: 40px; border-radius: 50%; margin: 0 auto 16px;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  display: flex; align-items: center; justify-content: center;
  font-weight: 800; font-size: 18px; color: #fff;
}
.setup-step h3 { font-size: 16px; margin-bottom: 8px; }
.bookmarklet-btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 14px 28px; border-radius: 100px;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  color: #fff; font-weight: 700; font-size: 16px;
  text-decoration: none; cursor: grab;
  box-shadow: 0 4px 20px rgba(108,92,231,0.4);
  transition: var(--transition);
}
.bookmarklet-btn:hover { transform: scale(1.05); box-shadow: 0 8px 30px rgba(108,92,231,0.6); }

/* Responsive */
@media (max-width: 768px) {
  .ai-panel { position: fixed; right: -100%; top: 0; width: 100%; height: 100vh; z-index: 300; }
  .ai-panel.open { right: 0; }
  .landing-nav { padding: 12px 16px; }
  .hero { padding: 100px 16px 60px; }
  .features { padding: 40px 16px; }
  .content-loaded { padding: 20px 16px; }
  .app-topbar { flex-wrap: wrap; }
  .hero-demo-content { flex-direction: column; }
  .setup-steps { grid-template-columns: 1fr; }
}