/* ============================================================
   TIME SPIRAL LANDING PAGE — STYLES
   Dark-first, red (#F44336) accent, Inter typeface
   ============================================================ */

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

:root {
  --color-bg: #0A0A0A;
  --color-surface: #141414;
  --color-surface-2: #1C1C1C;
  --color-surface-3: #2D2D2D;
  --color-border: rgba(255,255,255,0.08);
  --color-text: #F0F0F0;
  --color-text-secondary: #A0A0A0;
  --color-text-muted: #666;
  --color-primary: #F44336;
  --color-primary-glow: rgba(244,67,54,0.25);
  --color-primary-dark: #C62828;
  --color-green: #44AE4D;
  --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --container: 1120px;
  --radius: 16px;
  --radius-sm: 10px;
  --transition: 0.3s cubic-bezier(.4,0,.2,1);
}

html { scroll-behavior: smooth; scroll-padding-top: 80px; }

body {
  font-family: var(--font);
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }

.container { max-width: var(--container); margin: 0 auto; padding: 0 24px; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  font-family: var(--font); font-weight: 600; border: none; cursor: pointer;
  border-radius: 50px; transition: var(--transition);
  white-space: nowrap;
}
.btn-sm { padding: 8px 20px; font-size: 0.875rem; }
.btn-lg { padding: 14px 32px; font-size: 1rem; }
.btn-primary {
  background: var(--color-primary); color: #fff;
  box-shadow: 0 0 24px var(--color-primary-glow);
}
.btn-primary:hover {
  background: var(--color-primary-dark);
  box-shadow: 0 0 40px var(--color-primary-glow);
  transform: translateY(-2px);
}
.btn-outline {
  background: transparent; color: var(--color-text);
  border: 1.5px solid var(--color-border);
}
.btn-outline:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
  transform: translateY(-2px);
}

/* ---------- Navbar ---------- */
.navbar {
  position: fixed; top: 0; left: 0; width: 100%; z-index: 1000;
  padding: 16px 0;
  background: rgba(10,10,10,0.6);
  backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid transparent;
  transition: var(--transition);
}
.navbar.scrolled { border-bottom-color: var(--color-border); }
.nav-inner { display: flex; align-items: center; justify-content: space-between; }
.nav-logo { display: flex; align-items: center; gap: 10px; }
.nav-logo-img { width: 32px; height: 32px; border-radius: 8px; }
.nav-logo-text { font-weight: 700; font-size: 1.1rem; letter-spacing: -0.02em; }
.nav-links { display: flex; align-items: center; gap: 32px; }
.nav-links a { font-size: 0.9rem; color: var(--color-text-secondary); transition: var(--transition); }
.nav-links a:hover { color: var(--color-text); }
.nav-links .btn { color: #fff; }

.nav-toggle { display: none; background: none; border: none; cursor: pointer; flex-direction: column; gap: 5px; }
.nav-toggle span { display: block; width: 22px; height: 2px; background: var(--color-text); border-radius: 2px; transition: var(--transition); }

/* ---------- Hero ---------- */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex; align-items: center;
  padding: 120px 0 80px;
  overflow: hidden;
}

.hero-bg-spiral {
  position: absolute; top: 50%; right: -10%; width: 900px; height: 900px;
  transform: translate(0, -50%);
  background: conic-gradient(from 0deg, transparent, var(--color-primary-glow), transparent, var(--color-primary-glow), transparent);
  border-radius: 50%;
  opacity: 0.15;
  filter: blur(80px);
  animation: spiralRotate 30s linear infinite;
  pointer-events: none;
}
@keyframes spiralRotate { to { transform: translate(0,-50%) rotate(360deg); } }

.hero-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}
.hero-tagline {
  font-size: 0.875rem; font-weight: 600; text-transform: uppercase; letter-spacing: 0.15em;
  color: var(--color-primary); margin-bottom: 16px;
}
.hero-title {
  font-size: clamp(2.4rem, 5vw, 3.6rem);
  font-weight: 800; line-height: 1.1; letter-spacing: -0.03em;
  margin-bottom: 20px;
}
.hero-accent { color: var(--color-primary); }
.hero-subtitle {
  font-size: 1.1rem; color: var(--color-text-secondary); line-height: 1.7;
  max-width: 480px; margin-bottom: 32px;
}
.hero-cta { display: flex; gap: 16px; flex-wrap: wrap; margin-bottom: 24px; }
.hero-privacy {
  display: flex; align-items: center; gap: 6px;
  font-size: 0.8rem; color: var(--color-text-muted);
}
.hero-privacy svg { opacity: 0.5; }

.hero-visual { display: flex; justify-content: center; position: relative; }
.hero-phone { position: relative; max-width: 480px; }
.hero-mockup {
  width: 100%;
  border-radius: 24px;
  filter: drop-shadow(0 40px 80px rgba(0,0,0,0.6));
}

/* ---------- Sections ---------- */
.section { padding: 120px 0; }
.section-header { text-align: center; margin-bottom: 64px; }
.section-label {
  font-size: 0.8rem; font-weight: 600; text-transform: uppercase;
  letter-spacing: 0.15em; color: var(--color-primary); margin-bottom: 12px;
}
.section-title {
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  font-weight: 800; line-height: 1.15; letter-spacing: -0.02em;
}
.section-subtitle {
  font-size: 1.05rem; color: var(--color-text-secondary); margin-top: 16px;
  max-width: 520px; margin-inline: auto;
}

/* ---------- Features ---------- */
.features { background: var(--color-bg); }

/* Feature showcase rows (alternating text + mockup) */
.feature-showcase {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
  margin-bottom: 80px;
}
.feature-showcase.reverse { direction: rtl; }
.feature-showcase.reverse > * { direction: ltr; }

.feature-showcase-content h3 {
  font-size: 1.5rem; font-weight: 700; margin-bottom: 14px; letter-spacing: -0.01em;
}
.feature-showcase-content p {
  font-size: 1rem; color: var(--color-text-secondary); line-height: 1.7; max-width: 440px;
}

.feature-showcase-mockup {
  display: flex; align-items: center; justify-content: center;
}

/* Placeholder box for future mockup screenshots */
.mockup-placeholder {
  width: 100%; max-width: 380px; aspect-ratio: 9 / 16;
  border-radius: 24px;
  background: var(--color-surface-2);
  border: 2px dashed var(--color-border);
  display: flex; align-items: center; justify-content: center;
  position: relative;
  overflow: hidden;
  transition: var(--transition);
}
.mockup-placeholder:hover { border-color: rgba(244,67,54,0.3); }
.mockup-placeholder::after {
  content: attr(data-label);
  font-size: 0.85rem; font-weight: 600;
  color: var(--color-text-muted);
  text-transform: uppercase; letter-spacing: 0.1em;
}
.mockup-placeholder img {
  position: absolute; inset: 0; width: 100%; height: 100%;
  object-fit: cover; border-radius: 22px;
}

/* Secondary features (smaller cards) */
.features-grid-secondary {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 20px;
}

.feature-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 32px 28px;
  transition: var(--transition);
}
.feature-card:hover {
  border-color: rgba(244,67,54,0.3);
  transform: translateY(-4px);
  box-shadow: 0 20px 60px rgba(0,0,0,0.3);
}
.feature-icon {
  width: 48px; height: 48px;
  display: flex; align-items: center; justify-content: center;
  background: rgba(244,67,54,0.1);
  border-radius: 12px; margin-bottom: 20px;
}
.feature-icon svg { width: 24px; height: 24px; stroke: var(--color-primary); }
.feature-card h3 { font-size: 1.15rem; font-weight: 700; margin-bottom: 10px; letter-spacing: -0.01em; }
.feature-card p { font-size: 0.92rem; color: var(--color-text-secondary); line-height: 1.65; }

/* ---------- How It Works ---------- */
.how-it-works { background: var(--color-surface); }
.steps-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: center;
}
.step { padding: 20px 0; }
.step-number {
  display: inline-flex; align-items: center; justify-content: center;
  width: 40px; height: 40px;
  border-radius: 50%;
  background: var(--color-primary);
  color: #fff; font-weight: 800; font-size: 1rem;
  margin-bottom: 16px;
}
.step h3 { font-size: 1.25rem; font-weight: 700; margin-bottom: 10px; }
.step p { font-size: 0.95rem; color: var(--color-text-secondary); line-height: 1.65; max-width: 400px; }

.step-visual {
  grid-row: 1 / 4;
  grid-column: 2;
  display: flex; align-items: center; justify-content: center;
}
.step-mockup {
  width: 100%; max-width: 480px;
  border-radius: 24px;
  filter: drop-shadow(0 30px 60px rgba(0,0,0,0.5));
}

/* ---------- Principles ---------- */
.principles { background: var(--color-bg); }
.principles-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 20px;
}
.principle-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 28px 24px;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}
.principle-card::before {
  content: '';
  position: absolute; top: 0; left: 0; right: 0; height: 3px;
  background: linear-gradient(90deg, var(--color-primary), transparent);
  opacity: 0; transition: var(--transition);
}
.principle-card:hover::before { opacity: 1; }
.principle-card:hover { transform: translateY(-4px); }
.principle-num {
  font-size: 2rem; font-weight: 800; color: var(--color-primary);
  opacity: 0.3; display: block; margin-bottom: 12px;
}
.principle-card h3 { font-size: 0.95rem; font-weight: 700; margin-bottom: 10px; line-height: 1.3; }
.principle-card p { font-size: 0.82rem; color: var(--color-text-secondary); line-height: 1.6; }

/* ---------- Quote ---------- */
.quote-section {
  padding: 80px 0;
  background: var(--color-surface);
}
.quote-block {
  text-align: center;
}
.quote-block p {
  font-size: clamp(1.6rem, 3.5vw, 2.8rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  background: linear-gradient(135deg, var(--color-primary), #FF8A80);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ---------- Download CTA ---------- */
.download { background: var(--color-bg); }
.download-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 60px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 24px;
  padding: 64px;
  position: relative;
  overflow: hidden;
}
.download-inner::before {
  content: '';
  position: absolute; top: -50%; right: -20%; width: 500px; height: 500px;
  background: radial-gradient(circle, var(--color-primary-glow), transparent 70%);
  pointer-events: none;
}
.download-content { position: relative; z-index: 1; }
.download-content .section-title { text-align: left; }
.download-content .section-subtitle { max-width: 420px; margin-inline: 0; text-align: left; }
.download-badges { display: flex; gap: 16px; margin-top: 28px; flex-wrap: wrap; }
.download-visual { position: relative; z-index: 1; flex-shrink: 0; }
.download-logo { width: 180px; height: 180px; border-radius: 32px; filter: drop-shadow(0 20px 60px var(--color-primary-glow)); }

/* ---------- Footer ---------- */
.footer {
  padding: 32px 0;
  border-top: 1px solid var(--color-border);
}
.footer-inner {
  display: flex; align-items: center; justify-content: space-between;
  flex-wrap: wrap; gap: 16px;
}
.footer-brand { display: flex; align-items: center; gap: 8px; }
.footer-logo { width: 24px; height: 24px; border-radius: 6px; }
.footer-name { font-weight: 600; font-size: 0.9rem; }
.footer-copy { font-size: 0.8rem; color: var(--color-text-muted); }
.footer-links { display: flex; gap: 24px; }
.footer-links a { font-size: 0.8rem; color: var(--color-text-secondary); transition: var(--transition); }
.footer-links a:hover { color: var(--color-text); }

/* ---------- Store buttons ---------- */
.store-btn-group {
  display: flex; align-items: stretch; gap: 0;
}
.store-btn {
  display: flex; align-items: center; gap: 12px;
  padding: 12px 20px;
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
  border-radius: 14px 0 0 14px;
  transition: var(--transition);
  cursor: pointer;
}
.store-btn:hover {
  background: var(--color-surface-3);
  border-color: rgba(244,67,54,0.3);
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(0,0,0,0.3);
}
.store-btn-icon { width: 28px; height: 28px; flex-shrink: 0; color: #fff; }
.store-btn-text { display: flex; flex-direction: column; }
.store-btn-label {
  font-size: 0.65rem; font-weight: 500; color: var(--color-text-secondary);
  letter-spacing: 0.03em; line-height: 1.2;
}
.store-btn-name {
  font-size: 1.1rem; font-weight: 700; color: var(--color-text);
  line-height: 1.2; letter-spacing: -0.01em;
}

/* QR trigger button */
.qr-trigger {
  display: flex; align-items: center; justify-content: center;
  width: 48px;
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
  border-left: none;
  border-radius: 0 14px 14px 0;
  cursor: pointer; transition: var(--transition);
  color: var(--color-text-muted);
  padding: 0;
}
.qr-trigger svg { width: 20px; height: 20px; }
.qr-trigger:hover {
  background: var(--color-surface-3);
  color: var(--color-primary);
  border-color: rgba(244,67,54,0.3);
}
.store-btn:hover + .qr-trigger,
.store-btn:hover ~ .qr-trigger {
  transform: translateY(-2px);
}

/* QR Modal */
.qr-modal-overlay {
  position: fixed; inset: 0; z-index: 2000;
  background: rgba(0,0,0,0.7);
  backdrop-filter: blur(8px); -webkit-backdrop-filter: blur(8px);
  display: flex; align-items: center; justify-content: center;
  opacity: 0; pointer-events: none;
  transition: opacity 0.25s ease;
}
.qr-modal-overlay.active {
  opacity: 1; pointer-events: auto;
}
.qr-modal {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 20px;
  padding: 40px;
  text-align: center;
  position: relative;
  max-width: 340px; width: 90%;
  transform: scale(0.9);
  transition: transform 0.25s ease;
}
.qr-modal-overlay.active .qr-modal { transform: scale(1); }
.qr-modal-close {
  position: absolute; top: 12px; right: 16px;
  background: none; border: none; color: var(--color-text-secondary);
  font-size: 1.6rem; cursor: pointer; line-height: 1;
  transition: var(--transition);
}
.qr-modal-close:hover { color: var(--color-text); }
.qr-modal-title {
  font-size: 1.1rem; font-weight: 700; margin-bottom: 24px;
}
.qr-modal-code {
  width: 200px; height: 200px; margin: 0 auto 16px;
  background: #fff; border-radius: 12px;
  display: flex; align-items: center; justify-content: center;
  padding: 12px;
}
.qr-modal-code img { width: 100%; height: 100%; object-fit: contain; }
.qr-modal-hint {
  font-size: 0.8rem; color: var(--color-text-muted);
}

/* ---------- Scroll-reveal animation ---------- */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 1024px) {
  .feature-showcase { gap: 40px; }
  .features-grid-secondary { grid-template-columns: repeat(2, 1fr); }
  .principles-grid { grid-template-columns: repeat(3, 1fr); }
}

@media (max-width: 768px) {
  .nav-links { 
    display: none;
    position: absolute; top: 100%; left: 0; width: 100%;
    flex-direction: column; gap: 0;
    background: rgba(10,10,10,0.95);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--color-border);
    padding: 16px 0;
  }
  .nav-links.open { display: flex; }
  .nav-links li { width: 100%; }
  .nav-links a { display: block; padding: 14px 24px; text-align: center; }
  .nav-toggle { display: flex; }

  .hero { padding: 100px 0 60px; min-height: auto; }
  .hero-grid { grid-template-columns: 1fr; text-align: center; }
  .hero-subtitle { margin-inline: auto; }
  .hero-cta { justify-content: center; }
  .store-btn-group { flex: 1; min-width: 0; max-width: 220px; }\n  .store-btn { padding: 10px 14px; gap: 8px; }
  .store-btn-icon { width: 22px; height: 22px; }
  .store-btn-name { font-size: 0.95rem; }
  .hero-privacy { justify-content: center; }
  .hero-phone { max-width: 340px; margin: 0 auto; }

  .feature-showcase { grid-template-columns: 1fr; gap: 32px; }
  .feature-showcase.reverse { direction: ltr; }
  .feature-showcase-mockup { order: -1; }
  .feature-showcase-content { text-align: center; }
  .feature-showcase-content p { margin-inline: auto; }
  .mockup-placeholder { max-width: 280px; margin: 0 auto; }
  .features-grid-secondary { grid-template-columns: 1fr; }
  
  .steps-grid { grid-template-columns: 1fr; }
  .step-visual { grid-row: auto; grid-column: auto; order: -1; }
  .step-mockup { max-width: 340px; margin: 0 auto; }
  .step { text-align: center; }
  .step p { margin-inline: auto; }

  .principles-grid { grid-template-columns: 1fr 1fr; }

  .download-inner { flex-direction: column; text-align: center; padding: 40px 28px; }
  .download-content .section-title { text-align: center; }
  .download-content .section-subtitle { text-align: center; margin-inline: auto; }
  .download-badges { justify-content: center; }
  .download-logo { width: 120px; height: 120px; }

  .footer-inner { flex-direction: column; text-align: center; }
}

@media (max-width: 480px) {
  .principles-grid { grid-template-columns: 1fr; }
  .hero-title { font-size: 2rem; }
  .section-title { font-size: 1.6rem; }
}