/* RESET & VARS */
:root {
  --bg-primary: #050505;
  --bg-secondary: #0a0a0a;
  --bg-tertiary: #111111;
  --bg-card: #0a0a0a;
  --bg-card-hover: #111111;
  --bg-glass: rgba(5,5,5,0.9);
  --bg-input: #000000;

  --border-subtle: #222222;
  --border-glow: #333333;
  --border-strong: #444444;

  --accent-orange: #f97316;
  --accent-orange-bright: #fb923c;
  --accent-orange-glow: transparent;
  --accent-amber: #d97706;
  --accent-danger: #dc2626;
  --accent-success: #16a34a;

  --text-primary: #e5e5e5;
  --text-secondary: #888888;
  --text-muted: #555555;
  --text-orange: #ea580c;

  --sidebar-width: 300px;
  --header-height: 60px;
  --radius-sm: 0px;
  --radius-md: 0px;
  --radius-lg: 0px;
  --radius-full: 0px;

  --shadow-glow: none;
  --shadow-card: none;
  --font-sans: 'Inter', sans-serif;
  --font-mono: 'JetBrains Mono', monospace;
  --transition: none;
}

* { margin: 0; padding: 0; box-sizing: border-box; font-family: var(--font-sans); }
body, html { width: 100%; min-height: 100%; background: var(--bg-primary); color: var(--text-primary); line-height: 1.5; -webkit-font-smoothing: antialiased; }
#particle-canvas { position: fixed; top: 0; left: 0; width: 100vw; height: 100vh; z-index: 0; pointer-events: none; }
::-webkit-scrollbar { width: 4px; height: 4px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border-strong); }

a { color: inherit; text-decoration: none; }
button { background: none; border: none; cursor: pointer; color: inherit; font-family: inherit; }
input, textarea, select { background: var(--bg-input); border: 1px solid var(--border-subtle); color: var(--text-primary); padding: 8px 12px; outline: none; }
input:focus, textarea:focus, select:focus { border-color: var(--accent-orange); }
.mono { font-family: var(--font-mono); }

/* BADGES & BUTTONS */
.badge { display: inline-block; padding: 2px 6px; font-size: 0.7rem; text-transform: uppercase; letter-spacing: 0.05em; border: 1px solid var(--border-subtle); background: var(--bg-tertiary); color: var(--text-secondary); }
.badge-red { border-color: var(--accent-danger); color: var(--accent-danger); }
.badge-green { border-color: var(--accent-success); color: var(--accent-success); }
.badge-mini { font-size: 0.7rem; padding: 2px 4px; border: 1px solid var(--border-subtle); }

.btn-primary { background: var(--text-primary); color: var(--bg-primary); padding: 10px 20px; font-weight: 500; font-size: 0.85rem; border: 1px solid var(--text-primary); }
.btn-primary:hover { background: transparent; color: var(--text-primary); }
.btn-secondary { background: var(--bg-secondary); border: 1px solid var(--border-subtle); color: var(--text-primary); padding: 10px 20px; font-weight: 500; font-size: 0.85rem; }
.btn-secondary:hover { border-color: var(--accent-orange); color: var(--accent-orange); }
.btn-ghost { padding: 6px 12px; color: var(--text-secondary); font-size: 0.85rem; }
.btn-ghost:hover { color: var(--text-primary); }
.btn-danger { background: transparent; border: 1px solid var(--accent-danger); color: var(--accent-danger); padding: 8px 16px; font-size: 0.85rem; }
.btn-danger:hover { background: var(--accent-danger); color: #fff; }

/* LAYOUT */
#visitor-view { position: relative; z-index: 10; display: flex; flex-direction: column; min-height: 100vh; }
.site-nav { display: flex; justify-content: space-between; align-items: center; padding: 0 40px; height: var(--header-height); border-bottom: 1px solid var(--border-subtle); background: var(--bg-glass); backdrop-filter: blur(8px); position: sticky; top: 0; z-index: 100; }
.nav-brand { font-weight: 700; font-size: 1.1rem; letter-spacing: 0.02em; display: flex; align-items: center; gap: 8px; }
.brand-ai { color: var(--accent-orange); }
.nav-links { display: flex; gap: 32px; }
.nav-link { font-size: 0.85rem; color: var(--text-secondary); text-transform: uppercase; letter-spacing: 0.05em; }
.nav-link:hover { color: var(--text-primary); }
.nav-actions { display: flex; gap: 16px; }

.visitor-container { flex: 1; padding: 40px; max-width: 1200px; margin: 0 auto; width: 100%; }

/* HERO */
.hero-section { padding: 120px 0; max-width: 800px; }
.hero-title { font-size: 3rem; font-weight: 400; line-height: 1.2; margin-bottom: 24px; letter-spacing: -0.02em; }
.hero-desc { font-size: 1.1rem; color: var(--text-secondary); margin-bottom: 40px; line-height: 1.6; max-width: 600px; }
.hero-cta-group { display: flex; gap: 16px; }

/* SECTIONS */
.features-section, .pricing-section, .preview-section { padding: 80px 0; border-top: 1px solid var(--border-subtle); }
.section-title { font-size: 1.5rem; font-weight: 400; margin-bottom: 40px; }

.features-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; background: var(--border-subtle); border: 1px solid var(--border-subtle); }
.feature-card { background: var(--bg-primary); padding: 40px; }
.feature-card h3 { font-size: 1rem; font-weight: 500; margin-bottom: 12px; color: var(--text-primary); }
.feature-card p { font-size: 0.85rem; color: var(--text-secondary); line-height: 1.6; }

.pricing-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px; background: var(--border-subtle); border: 1px solid var(--border-subtle); }
.pricing-card { background: var(--bg-primary); padding: 40px 24px; display: flex; flex-direction: column; }
.pricing-card.featured { background: var(--bg-secondary); }
.plan-name { font-size: 0.85rem; text-transform: uppercase; letter-spacing: 0.05em; color: var(--text-secondary); margin-bottom: 16px; }
.plan-price { font-size: 2rem; font-weight: 400; margin-bottom: 8px; color: var(--text-primary); }
.plan-price span { font-size: 0.85rem; color: var(--text-muted); }
.plan-desc { font-size: 0.85rem; color: var(--text-secondary); margin-bottom: 32px; min-height: 40px; }
.plan-features { list-style: none; flex: 1; margin-bottom: 32px; }
.plan-features li { font-size: 0.8rem; color: var(--text-muted); margin-bottom: 12px; padding-left: 12px; border-left: 1px solid var(--border-subtle); }
.plan-features li.active { color: var(--text-secondary); border-color: var(--accent-orange); }
.pricing-card button { width: 100%; margin-top: auto; }

.site-footer { border-top: 1px solid var(--border-subtle); padding: 40px; font-size: 0.8rem; color: var(--text-muted); display: flex; justify-content: space-between; background: var(--bg-primary); z-index: 10; position: relative; }
.footer-links { display: flex; gap: 24px; }

/* APP VIEW */
#app-view { display: none; position: fixed; top: 0; left: 0; width: 100vw; height: 100vh; z-index: 50; background: var(--bg-primary); }
#app-view.active { display: flex; }
.app-sidebar { width: var(--sidebar-width); border-right: 1px solid var(--border-subtle); display: flex; flex-direction: column; background: var(--bg-secondary); }
.sidebar-header { padding: 20px; border-bottom: 1px solid var(--border-subtle); display: flex; justify-content: space-between; align-items: center; }
.sidebar-actions { padding: 20px; border-bottom: 1px solid var(--border-subtle); }
.btn-new-chat { width: 100%; padding: 12px; background: transparent; border: 1px solid var(--border-subtle); color: var(--text-primary); font-size: 0.85rem; text-align: center; }
.btn-new-chat:hover { border-color: var(--accent-orange); color: var(--accent-orange); }
.sidebar-scroll { flex: 1; overflow-y: auto; padding: 20px 0; }
.section-label { font-size: 0.7rem; text-transform: uppercase; letter-spacing: 0.05em; color: var(--text-muted); padding: 0 20px; margin-bottom: 12px; display: flex; justify-content: space-between; align-items: center; }
.sidebar-item { padding: 10px 20px; font-size: 0.85rem; color: var(--text-secondary); cursor: pointer; display: flex; justify-content: space-between; align-items: center; border-left: 2px solid transparent; }
.sidebar-item:hover { color: var(--text-primary); background: var(--bg-tertiary); }
.sidebar-item.active { color: var(--accent-orange); border-left-color: var(--accent-orange); background: var(--bg-primary); }
.sidebar-item-actions { display: none; gap: 8px; }
.sidebar-item:hover .sidebar-item-actions { display: flex; }
.btn-item-action { color: var(--text-muted); padding: 2px; }
.btn-item-action:hover { color: var(--text-primary); }
.btn-item-action.delete:hover { color: var(--accent-danger); }

.sidebar-footer { border-top: 1px solid var(--border-subtle); padding: 20px; background: var(--bg-secondary); }
.user-profile-badge { display: flex; align-items: center; justify-content: space-between; cursor: pointer; margin-bottom: 16px; }
.user-info { display: flex; align-items: center; gap: 12px; }
.avatar-img { width: 32px; height: 32px; filter: grayscale(100%); }
.user-details { display: flex; flex-direction: column; }
.user-name { font-size: 0.85rem; font-weight: 500; color: var(--text-primary); }
.user-credits-pill { font-size: 0.75rem; color: var(--accent-orange); font-family: var(--font-mono); }

.app-main { flex: 1; display: flex; flex-direction: column; position: relative; }
.chat-header { height: var(--header-height); border-bottom: 1px solid var(--border-subtle); display: flex; justify-content: space-between; align-items: center; padding: 0 24px; background: var(--bg-glass); backdrop-filter: blur(8px); position: absolute; top: 0; left: 0; right: 0; z-index: 10; }
.chat-thread-info { display: flex; align-items: center; gap: 16px; }
.thread-title-input { background: transparent; border: none; color: var(--text-primary); font-size: 0.95rem; font-weight: 500; width: 240px; padding: 4px 0; }
.thread-title-input:focus { border-bottom: 1px solid var(--accent-orange); }

.chat-messages-container { flex: 1; padding: 100px 24px 120px; overflow-y: auto; display: flex; flex-direction: column; gap: 32px; max-width: 900px; margin: 0 auto; width: 100%; }
.message-bubble { display: flex; gap: 20px; }
.message-avatar { width: 32px; height: 32px; flex-shrink: 0; display: flex; align-items: center; justify-content: center; font-family: var(--font-mono); font-size: 0.85rem; border: 1px solid var(--border-subtle); background: var(--bg-secondary); }
.message-bubble.assistant .message-avatar { border-color: var(--accent-orange); color: var(--accent-orange); }
.message-body { flex: 1; font-size: 0.95rem; line-height: 1.6; color: var(--text-primary); }
.message-body pre { background: var(--bg-secondary); border: 1px solid var(--border-subtle); padding: 16px; margin: 12px 0; overflow-x: auto; font-family: var(--font-mono); font-size: 0.85rem; }
.message-body code { font-family: var(--font-mono); font-size: 0.85em; color: var(--accent-orange); }
.message-body pre code { color: var(--text-primary); }

.prompt-dock { position: absolute; bottom: 0; left: 0; right: 0; padding: 24px; background: linear-gradient(0deg, var(--bg-primary) 60%, transparent); display: flex; justify-content: center; }
.prompt-box-container { width: 100%; max-width: 900px; background: var(--bg-secondary); border: 1px solid var(--border-subtle); display: flex; flex-direction: column; }
.prompt-box-container:focus-within { border-color: var(--border-strong); }
.prompt-textarea { background: transparent; border: none; padding: 16px; resize: none; min-height: 56px; max-height: 300px; width: 100%; font-size: 0.95rem; line-height: 1.5; color: var(--text-primary); }
.prompt-toolbar { display: flex; justify-content: space-between; align-items: center; padding: 8px 16px; border-top: 1px solid var(--border-subtle); background: var(--bg-tertiary); }
.credit-cost-indicator { font-size: 0.75rem; color: var(--text-muted); font-family: var(--font-mono); }
.btn-send-prompt { padding: 4px 12px; background: var(--text-primary); color: var(--bg-primary); font-size: 0.85rem; font-weight: 500; }
.btn-send-prompt:disabled { opacity: 0.5; cursor: not-allowed; }

/* MODALS */
.modal-overlay { position: fixed; top: 0; left: 0; width: 100vw; height: 100vh; background: rgba(0,0,0,0.8); backdrop-filter: blur(4px); z-index: 200; display: none; align-items: center; justify-content: center; }
.modal-overlay.active { display: flex; }
.modal-dialog { background: var(--bg-primary); border: 1px solid var(--border-subtle); width: 100%; max-width: 480px; }
.modal-header { padding: 20px; border-bottom: 1px solid var(--border-subtle); display: flex; justify-content: space-between; align-items: center; background: var(--bg-secondary); }
.modal-header h3 { font-size: 1rem; font-weight: 500; letter-spacing: 0.02em; }
.modal-close-btn { font-size: 1.2rem; color: var(--text-muted); }
.modal-close-btn:hover { color: var(--text-primary); }
.modal-content { padding: 24px; }
.form-group { margin-bottom: 20px; }
.form-group label { display: block; font-size: 0.8rem; text-transform: uppercase; letter-spacing: 0.05em; color: var(--text-muted); margin-bottom: 8px; }
.form-group input, .form-group textarea, .form-group select { width: 100%; }

.custom-dropdown { position: relative; }
.dropdown-trigger { display: flex; align-items: center; gap: 8px; padding: 4px 12px; border: 1px solid var(--border-subtle); background: var(--bg-secondary); font-size: 0.85rem; }
.dropdown-menu { position: absolute; top: 100%; left: 0; margin-top: 4px; background: var(--bg-secondary); border: 1px solid var(--border-subtle); min-width: 200px; display: none; flex-direction: column; z-index: 300; }
.dropdown-menu.open { display: flex; }
.dropdown-option { padding: 12px; cursor: pointer; border-left: 2px solid transparent; border-bottom: 1px solid var(--border-subtle); }
.dropdown-option:last-child { border-bottom: none; }
.dropdown-option:hover { background: var(--bg-tertiary); }
.dropdown-option.selected { border-left-color: var(--accent-orange); background: var(--bg-primary); }
.dropdown-option-row { display: flex; justify-content: space-between; align-items: center; margin-bottom: 4px; font-size: 0.85rem; color: var(--text-primary); }
.dropdown-option-desc { font-size: 0.75rem; color: var(--text-muted); }

/* TOASTS */
.toast-container { position: fixed; bottom: 24px; right: 24px; z-index: 500; display: flex; flex-direction: column; gap: 12px; }
.toast { background: var(--bg-secondary); border: 1px solid var(--border-subtle); padding: 12px 20px; font-size: 0.85rem; color: var(--text-primary); box-shadow: var(--shadow-card); }
.toast.success { border-left: 2px solid var(--accent-success); }
.toast.danger { border-left: 2px solid var(--accent-danger); }
.toast.warn { border-left: 2px solid var(--accent-amber); }
.toast.info { border-left: 2px solid var(--accent-orange); }

/* BANNER */
#site-lockdown-banner { display: none; background: var(--bg-secondary); border: 1px solid var(--accent-danger); padding: 40px; text-align: center; position: fixed; top: 50%; left: 50%; transform: translate(-50%, -50%); z-index: 1000; max-width: 600px; width: 100%; }
#site-lockdown-banner.active { display: block; }

.chat-welcome-card { padding: 40px; background: var(--bg-secondary); border: 1px solid var(--border-subtle); max-width: 700px; margin: 0 auto; text-align: center; }
.chat-welcome-card h2 { font-size: 1.25rem; font-weight: 400; margin-bottom: 12px; }
.quick-prompts-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin-top: 32px; }
.quick-prompt-btn { padding: 16px; background: var(--bg-primary); border: 1px solid var(--border-subtle); font-size: 0.85rem; color: var(--text-secondary); text-align: left; }
.quick-prompt-btn:hover { border-color: var(--text-primary); color: var(--text-primary); }

.avatar-upload-zone { border: 1px dashed var(--border-strong); padding: 24px; text-align: center; cursor: pointer; display: flex; flex-direction: column; align-items: center; gap: 16px; }
.avatar-upload-zone:hover { border-color: var(--accent-orange); }
.avatar-preview-box { width: 80px; height: 80px; position: relative; }
.avatar-preview-img { width: 100%; height: 100%; object-fit: cover; filter: grayscale(100%); }
.avatar-upload-meta { display: flex; flex-direction: column; gap: 4px; }
.avatar-upload-title { font-size: 0.85rem; font-weight: 500; }
.avatar-upload-subtitle { font-size: 0.75rem; color: var(--text-muted); }

/* MISC FIXES */
.brand-icon { display: none; } /* Hide the emoji icon container if we used one */