/* === NAV === */
.ss-nav { position: fixed; top: 0; left: 0; right: 0; z-index: 1000; background: rgba(12,12,12,0.85); backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px); }
.ss-nav-inner { max-width: var(--ss-page-width); margin: 0 auto; padding: 20px clamp(24px, 5vw, 80px); display: flex; justify-content: space-between; align-items: center; }
.ss-nav-brand { display: flex; align-items: center; gap: 10px; text-decoration: none; }
.ss-nav-brand-text { font-size: 16px; font-weight: 700; color: var(--ss-text); letter-spacing: 2px; }
.ss-nav-links { display: flex; gap: 32px; align-items: center; }
.ss-nav-link { font-size: 13px; font-weight: 500; color: var(--ss-text-muted); text-decoration: none; transition: color 0.2s; }
.ss-nav-link:hover { color: var(--ss-text); }
.ss-nav-cta { padding: 8px 20px; background: var(--ss-violet); color: #fff; font-size: 12px; font-weight: 600; text-decoration: none; text-transform: uppercase; letter-spacing: 1.5px; transition: background 0.2s; }
.ss-nav-cta:hover { background: var(--ss-violet-hover); }

/* === HERO === */
.ss-hero { min-height: 80vh; display: flex; flex-direction: column; align-items: center; justify-content: center; text-align: center; padding: 120px clamp(24px, 5vw, 80px) 40px; position: relative; overflow: hidden; }
.ss-hero::before { content: ''; position: absolute; inset: 0; background: radial-gradient(ellipse at 50% 60%, rgba(124,92,252,0.08) 0%, transparent 60%); }
.ss-hero::after { content: ''; position: absolute; inset: 0; background-image: linear-gradient(rgba(124,92,252,0.02) 1px, transparent 1px), linear-gradient(90deg, rgba(124,92,252,0.02) 1px, transparent 1px); background-size: 60px 60px; mask-image: radial-gradient(ellipse at center, black 30%, transparent 70%); }
.ss-hero-content { position: relative; z-index: 2; max-width: 700px; }
.ss-hero-badge { display: inline-flex; align-items: center; gap: 8px; border: 1px solid var(--ss-border); padding: 6px 16px; margin-bottom: 32px; font-size: 10px; text-transform: uppercase; letter-spacing: 3px; color: var(--ss-violet); font-weight: 600; }
.ss-hero-badge-dot { width: 6px; height: 6px; border-radius: 50%; background: var(--ss-violet); animation: ssPulse 2s ease infinite; }
.ss-hero h1 { font-size: 56px; font-weight: 800; color: var(--ss-text); letter-spacing: -3px; line-height: 1.0; margin-bottom: 20px; }
.ss-hero h1 span { color: var(--ss-violet); }
.ss-hero-sub { font-size: 17px; color: var(--ss-text-secondary); line-height: 1.7; max-width: 520px; margin: 0 auto 36px; }
.ss-hero-cta { display: inline-block; padding: 14px 36px; background: var(--ss-violet); color: #fff; font-size: 13px; font-weight: 600; text-decoration: none; text-transform: uppercase; letter-spacing: 1.5px; transition: background 0.2s; }
.ss-hero-cta:hover { background: var(--ss-violet-hover); }
.ss-hero-secondary { display: block; margin-top: 14px; font-size: 13px; color: var(--ss-text-muted); text-decoration: none; transition: color 0.2s; }
.ss-hero-secondary:hover { color: var(--ss-violet); }

/* === SECTIONS === */
.ss-section { padding: 80px clamp(24px, 5vw, 80px); max-width: calc(var(--ss-page-width) + clamp(24px, 5vw, 80px) * 2); margin: 0 auto; }
.ss-section-label { font-size: 10px; text-transform: uppercase; letter-spacing: 3px; color: var(--ss-violet); font-weight: 600; margin-bottom: 12px; text-align: center; }
.ss-section-title { font-size: 32px; font-weight: 800; color: var(--ss-text); text-align: center; margin-bottom: 12px; letter-spacing: -1px; }
.ss-section-sub { font-size: 15px; color: var(--ss-text-secondary); text-align: center; max-width: 480px; margin: 0 auto 48px; line-height: 1.6; }

/* === DEMO SEQUENCE === */
.ss-demo { background: var(--ss-surface); border: 1px solid var(--ss-border); overflow: hidden; position: relative; }
.ss-demo-chrome { display: flex; align-items: center; gap: 8px; padding: 14px 20px; background: rgba(0,0,0,0.3); border-bottom: 1px solid var(--ss-border); }
.ss-demo-dot { width: 10px; height: 10px; border-radius: 50%; }
.ss-demo-dot:nth-child(1) { background: #ff5f57; }
.ss-demo-dot:nth-child(2) { background: #ffbd2e; }
.ss-demo-dot:nth-child(3) { background: #28ca41; }
.ss-demo-title { flex: 1; text-align: center; font-family: var(--ss-font-mono); font-size: 12px; color: var(--ss-text-muted); }
.ss-demo-body { min-height: 440px; position: relative; }
.ss-demo-step { position: absolute; inset: 0; padding: 36px 32px 48px; display: flex; flex-direction: column; opacity: 0; transition: opacity 0.5s ease, transform 0.5s ease; transform: translateX(30px); pointer-events: none; overflow-y: auto; }
.ss-demo-step.active { opacity: 1; transform: translateX(0); pointer-events: all; }

/* Step 1: Repo picker */
.ss-repo-input { display: flex; align-items: center; gap: 12px; background: var(--ss-bg); border: 1px solid var(--ss-border); padding: 16px 20px; margin-bottom: 20px; max-width: 500px; }
.ss-repo-input svg { flex-shrink: 0; opacity: 0.5; }
.ss-repo-url { font-family: var(--ss-font-mono); font-size: 14px; color: var(--ss-violet); flex: 1; }
.ss-repo-btn { padding: 10px 24px; background: var(--ss-violet); color: #fff; font-size: 12px; font-weight: 600; text-transform: uppercase; letter-spacing: 1px; border: none; cursor: pointer; }
.ss-repo-meta { font-size: 13px; color: var(--ss-text-muted); margin-top: 12px; }
.ss-repo-meta span { color: var(--ss-text-secondary); font-weight: 500; }

/* Step 2: Chat */
.ss-chat { background: var(--ss-bg); border: 1px solid var(--ss-border); }
.ss-chat-header { display: flex; align-items: center; gap: 10px; padding: 14px 20px; border-bottom: 1px solid var(--ss-border); }
.ss-chat-header-icon { width: 28px; height: 28px; display: flex; align-items: center; justify-content: center; background: rgba(124,92,252,0.1); border: 1px solid rgba(124,92,252,0.25); border-radius: 6px; flex-shrink: 0; }
.ss-chat-header-name { font-size: 13px; font-weight: 600; color: var(--ss-text); }
.ss-chat-header-sub { font-size: 11px; color: var(--ss-text-muted); }
.ss-chat-messages { padding: 20px; display: flex; flex-direction: column; gap: 12px; }
.ss-chat-msg { max-width: 85%; padding: 12px 16px; font-size: 14px; line-height: 1.6; }
.ss-chat-msg--ai { background: var(--ss-surface); border: 1px solid var(--ss-border); border-radius: 2px 12px 12px 12px; color: var(--ss-text); align-self: flex-start; }
.ss-chat-msg--user { background: rgba(124,92,252,0.12); border: 1px solid rgba(124,92,252,0.2); border-radius: 12px 2px 12px 12px; color: var(--ss-text-secondary); align-self: flex-end; }
.ss-chat-tag { font-family: var(--ss-font-mono); font-size: 10px; text-transform: uppercase; letter-spacing: 1.5px; margin-bottom: 6px; font-weight: 600; }
.ss-chat-typing { display: flex; gap: 4px; padding: 14px 16px; background: var(--ss-surface); border: 1px solid var(--ss-border); border-radius: 2px 12px 12px 12px; align-self: flex-start; }
.ss-chat-typing span { width: 6px; height: 6px; border-radius: 50%; background: var(--ss-text-muted); animation: typingDot 1.4s ease-in-out infinite; }
.ss-chat-typing span:nth-child(2) { animation-delay: 0.2s; }
.ss-chat-typing span:nth-child(3) { animation-delay: 0.4s; }

/* Step 3: Output */
.ss-output-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 2px; }
.ss-output-card { background: var(--ss-bg); padding: 20px; }
.ss-output-icon { font-size: 20px; margin-bottom: 10px; }
.ss-output-title { font-size: 13px; font-weight: 600; color: var(--ss-text); margin-bottom: 4px; }
.ss-output-desc { font-size: 12px; color: var(--ss-text-muted); line-height: 1.5; }
.ss-output-badge { display: inline-flex; align-items: center; gap: 6px; margin-top: 20px; font-size: 11px; color: var(--ss-emerald); }
.ss-output-badge-dot { width: 6px; height: 6px; border-radius: 50%; background: var(--ss-emerald); }

/* Progress bar */
.ss-demo-progress { display: flex; gap: 4px; padding: 16px 20px 40px; background: rgba(0,0,0,0.2); border-top: 1px solid var(--ss-border); }
.ss-demo-progress-step { flex: 1; height: 3px; background: rgba(124,92,252,0.15); cursor: pointer; transition: background 0.3s; position: relative; }
.ss-demo-progress-step.active { background: var(--ss-violet); }
.ss-demo-progress-step.done { background: var(--ss-emerald); }
.ss-demo-progress-label { position: absolute; top: 10px; left: 0; font-size: 10px; color: var(--ss-text-muted); text-transform: uppercase; letter-spacing: 1px; white-space: nowrap; }
.ss-demo-progress-step.active .ss-demo-progress-label { color: var(--ss-violet); }
.ss-demo-progress-step.done .ss-demo-progress-label { color: var(--ss-emerald); }

/* === FEATURES === */
.ss-features-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 2px; }
.ss-feature-card { background: var(--ss-surface); padding: 40px 32px; }
.ss-feature-icon { width: 40px; height: 40px; display: flex; align-items: center; justify-content: center; margin-bottom: 20px; background: rgba(124,92,252,0.08); }
.ss-feature-title { font-size: 16px; font-weight: 700; color: var(--ss-text); margin-bottom: 10px; letter-spacing: -0.3px; }
.ss-feature-desc { font-size: 14px; color: var(--ss-text-secondary); line-height: 1.7; }

/* === SIGNUP === */
.ss-signup { padding: 100px clamp(24px, 5vw, 80px); max-width: calc(var(--ss-page-width) + clamp(24px, 5vw, 80px) * 2); margin: 0 auto; }
.ss-signup-card { background: linear-gradient(135deg, rgba(124,92,252,0.05), rgba(0,229,160,0.03)); padding: 64px; text-align: center; position: relative; overflow: hidden; }
.ss-signup-card::before { content: ''; position: absolute; inset: 0; background-image: radial-gradient(circle at 80% 20%, rgba(124,92,252,0.06) 0%, transparent 50%); }
.ss-signup-content { position: relative; z-index: 2; }
.ss-signup-title { font-size: 28px; font-weight: 800; color: var(--ss-text); margin-bottom: 8px; letter-spacing: -0.5px; }
.ss-signup-sub { font-size: 15px; color: var(--ss-text-secondary); margin-bottom: 36px; line-height: 1.6; }
.ss-role-selector { display: flex; justify-content: center; gap: 12px; margin-bottom: 24px; }
.ss-role-btn { padding: 10px 24px; border: 1px solid var(--ss-border); background: transparent; color: var(--ss-text-secondary); font-size: 13px; font-weight: 500; cursor: pointer; transition: all 0.2s; font-family: var(--ss-font); }
.ss-role-btn:hover { border-color: rgba(124,92,252,0.4); color: var(--ss-violet); }
.ss-role-btn.active { background: rgba(124,92,252,0.1); border-color: var(--ss-violet); color: var(--ss-violet); font-weight: 600; }
.ss-signup-form { display: flex; justify-content: center; gap: 8px; max-width: 440px; margin: 0 auto; }
.ss-signup-input { flex: 1; padding: 14px 20px; background: rgba(124,92,252,0.04); border: 1px solid var(--ss-border); color: var(--ss-text); font-size: 14px; font-family: var(--ss-font); outline: none; }
.ss-signup-input::placeholder { color: var(--ss-text-muted); }
.ss-signup-input:focus { border-color: rgba(124,92,252,0.4); }
.ss-signup-btn { padding: 14px 28px; background: var(--ss-violet); color: #fff; font-size: 13px; font-weight: 600; border: none; cursor: pointer; font-family: var(--ss-font); text-transform: uppercase; letter-spacing: 1px; white-space: nowrap; transition: background 0.2s; }
.ss-signup-btn:hover { background: var(--ss-violet-hover); }

/* === FLYWHEEL + FOOTER === */
.ss-flywheel { padding: 48px clamp(24px, 5vw, 80px); max-width: calc(var(--ss-page-width) + clamp(24px, 5vw, 80px) * 2); margin: 0 auto; text-align: center; }
.ss-flywheel-text { font-size: 12px; color: var(--ss-text-dim); }
.ss-flywheel-text a { color: var(--ss-emerald); text-decoration: none; font-weight: 500; }
.ss-footer { padding: 48px clamp(24px, 5vw, 80px); max-width: calc(var(--ss-page-width) + clamp(24px, 5vw, 80px) * 2); margin: 0 auto; }
.ss-footer-inner { display: flex; justify-content: space-between; align-items: center; border-top: 1px solid rgba(255,255,255,0.06); padding-top: 32px; }
.ss-footer-copy { font-size: 13px; color: var(--ss-text-dim); }
.ss-footer-links { display: flex; gap: 24px; }
.ss-footer-link { font-size: 13px; color: var(--ss-text-muted); text-decoration: none; transition: color 0.2s; }
.ss-footer-link:hover { color: var(--ss-violet); }

/* === RESPONSIVE === */
@media (max-width: 768px) {
  .ss-nav-links { display: none; }
  .ss-hero h1 { font-size: 36px; letter-spacing: -2px; }
  .ss-features-grid { grid-template-columns: 1fr; }
  .ss-output-grid { grid-template-columns: 1fr; }
  .ss-signup-card { padding: 40px 24px; }
  .ss-role-selector { flex-wrap: wrap; }
  .ss-signup-form { flex-direction: column; }
  .ss-footer-inner { flex-direction: column; gap: 16px; }
}