/* =============================================
   Photok Website — style.css
   Inspired by the Things 3 landing page aesthetic:
   centered, airy, large typography, smooth curves
   ============================================= */

/* --- Variables --- */
:root {
  --primary: #50C9C3;
  --primary-dark: #319f99;
  --primary-hover: #3db8b2;

  --hero-bg: #e6f4f3;       /* soft teal-tinted gray for hero */
  --privacy-bg: #1b2e2d;    /* deep teal-dark for privacy band */

  --white: #ffffff;
  --bg: #ffffff;
  --surface: #f5fafa;

  --text: #1d1d1f;
  --text-secondary: #6e6e73;
  --text-light: #9ca3af;

  --radius: 20px;
  --radius-sm: 12px;

  --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --transition: 0.2s ease;
}

/* --- Reset --- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }

/* --- Layout --- */
.container {
  width: 100%;
  max-width: 1040px;
  margin: 0 auto;
  padding: 0 32px;
}
.section { padding: 100px 0; }

/* --- NAV --- */
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(230, 244, 243, 0.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 60px;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 9px;
  font-family: 'Lobster', cursive;
  font-size: 1.2rem;
  font-weight: 400;
  color: var(--text);
}
.nav-logo img {
  width: 28px;
  height: 28px;
  border-radius: 7px;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
  font-size: 0.92rem;
  font-weight: 500;
}
.nav-links a {
  color: var(--text-secondary);
  transition: color var(--transition);
}
.nav-links a:hover { color: var(--text); }

.nav-github {
  display: flex;
  align-items: center;
  gap: 6px;
  color: var(--text) !important;
  font-weight: 600;
}
.nav-github svg { width: 17px; height: 17px; }

/* --- HERO --- */
.hero {
  background: var(--hero-bg);
  padding: 80px 0 0;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.hero-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding-bottom: 64px;
}

.hero-icon {
  width: 120px;
  height: 120px;
  border-radius: 28px;
  box-shadow: 0 20px 60px rgba(49, 159, 153, 0.25);
  margin-bottom: 28px;
}

.hero h1 {
  font-family: 'Lobster', cursive;
  font-size: clamp(2.8rem, 6vw, 4rem);
  font-weight: 400;
  letter-spacing: 0;
  line-height: 1.05;
  color: var(--text);
  margin-bottom: 20px;
}

.hero-sub {
  font-size: clamp(1rem, 2vw, 1.2rem);
  color: var(--text-secondary);
  max-width: 560px;
  line-height: 1.7;
  margin-bottom: 40px;
}

.br-desktop { display: inline; }

.hero-cta {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  justify-content: center;
}

/* --- BUTTONS --- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 13px 26px;
  border-radius: 100px;
  font-size: 0.97rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition);
  white-space: nowrap;
}
.btn-primary {
  background: var(--primary);
  color: #fff;
  box-shadow: 0 4px 16px rgba(80, 201, 195, 0.35);
}
.btn-primary:hover {
  background: var(--primary-dark);
  box-shadow: 0 6px 22px rgba(80, 201, 195, 0.45);
  transform: translateY(-1px);
}
.btn-ghost {
  background: rgba(0,0,0,0.06);
  color: var(--text);
}
.btn-ghost:hover {
  background: rgba(0,0,0,0.10);
  transform: translateY(-1px);
}
.btn-primary-inverted {
  background: #fff;
  color: var(--primary-dark);
  box-shadow: 0 4px 20px rgba(0,0,0,0.15);
}
.btn-primary-inverted:hover {
  transform: translateY(-1px);
  box-shadow: 0 8px 28px rgba(0,0,0,0.2);
}
.btn-ghost-inverted {
  background: rgba(255,255,255,0.12);
  color: #fff;
  border: 1px solid rgba(255,255,255,0.25);
}
.btn-ghost-inverted:hover {
  background: rgba(255,255,255,0.2);
  transform: translateY(-1px);
}

/* --- HERO CURVED DIVIDER --- */
.hero-divider {
  line-height: 0;
  overflow: hidden;
}
.hero-divider svg {
  display: block;
  width: 100%;
  height: 80px;
}

/* --- SCREENSHOTS --- */
.screenshots-section {
  background: var(--white);
  padding: 60px 0 80px;
  overflow: hidden;
}

.screenshots-row {
  display: flex;
  justify-content: center;
  align-items: flex-end;
  gap: 20px;
  flex-wrap: wrap;
}

.phone-screenshot {
  width: 200px;
  border-radius: 20px;
  box-shadow: 0 24px 64px rgba(0, 0, 0, 0.13);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}
.phone-screenshot:hover {
  transform: translateY(-6px) scale(1.02);
  box-shadow: 0 32px 80px rgba(0, 0, 0, 0.18);
}
.phone-screenshot--center {
  transform: translateY(-20px);
}
.phone-screenshot--center:hover {
  transform: translateY(-26px) scale(1.02);
}

/* --- PITCH --- */
.pitch {
  text-align: center;
  background: var(--bg);
  padding-top: 60px;
}

.pitch-inner {
  max-width: 680px;
  margin: 0 auto;
}

.pitch-eyebrow {
  display: inline-block;
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--primary-dark);
  margin-bottom: 16px;
}

.pitch h2, .privacy-inner h2, .download-inner h2 {
  font-size: clamp(1.9rem, 4vw, 2.8rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.15;
  margin-bottom: 20px;
}

.pitch p {
  font-size: 1.05rem;
  color: var(--text-secondary);
  line-height: 1.75;
  margin-bottom: 24px;
}

.text-link {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--primary-dark);
  transition: opacity var(--transition);
}
.text-link:hover { opacity: 0.7; }

/* --- FEATURES --- */
.features {
  background: var(--surface);
  border-top: 1px solid #e8f0ef;
  border-bottom: 1px solid #e8f0ef;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.feature-card {
  background: var(--white);
  border-radius: var(--radius);
  padding: 28px 24px;
  transition: transform var(--transition), box-shadow var(--transition);
}
.feature-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 40px rgba(80, 201, 195, 0.1);
}

.feature-icon {
  font-size: 1.7rem;
  margin-bottom: 14px;
}
.feature-card h3 {
  font-size: 0.97rem;
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--text);
}
.feature-card p {
  font-size: 0.88rem;
  color: var(--text-secondary);
  line-height: 1.65;
}

/* --- PRIVACY BAND --- */
.privacy-section {
  background: var(--privacy-bg);
  color: #fff;
  text-align: center;
  position: relative;
  padding: 0;
}

.privacy-curve-top,
.privacy-curve-bottom {
  line-height: 0;
  overflow: hidden;
}
.privacy-curve-top svg,
.privacy-curve-bottom svg {
  display: block;
  width: 100%;
  height: 80px;
}

.privacy-inner {
  padding: 72px 32px;
  max-width: 680px;
  margin: 0 auto;
}

.privacy-section .pitch-eyebrow {
  color: var(--primary);
}

.privacy-inner h2 {
  color: #fff;
  margin-bottom: 20px;
}

.privacy-inner > p {
  font-size: 1.05rem;
  color: rgba(255,255,255,0.65);
  line-height: 1.75;
  margin-bottom: 36px;
}

.privacy-checklist {
  list-style: none;
  text-align: left;
  max-width: 480px;
  margin: 0 auto 40px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.privacy-checklist li {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  font-size: 0.97rem;
  color: rgba(255,255,255,0.85);
  line-height: 1.5;
}
.check-dot {
  flex-shrink: 0;
  width: 20px;
  height: 20px;
  background: var(--primary);
  border-radius: 50%;
  margin-top: 2px;
  position: relative;
}
.check-dot::after {
  content: '';
  position: absolute;
  left: 5px;
  top: 4px;
  width: 6px;
  height: 4px;
  border-left: 2px solid #fff;
  border-bottom: 2px solid #fff;
  transform: rotate(-45deg);
}
.privacy-checklist strong { color: #fff; }

.privacy-actions {
  display: flex;
  gap: 14px;
  justify-content: center;
  flex-wrap: wrap;
}

/* --- DOWNLOAD --- */
.download {
  background: var(--bg);
  text-align: center;
}

.download-inner { }

.section-sub {
  font-size: 1.05rem;
  color: var(--text-secondary);
  margin-bottom: 52px;
  margin-top: 16px;
}

.download-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  max-width: 840px;
  margin: 0 auto;
}

.download-card {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 22px 20px;
  background: var(--surface);
  border: 1.5px solid #e3eded;
  border-radius: var(--radius);
  transition: all var(--transition);
  text-align: left;
}
.download-card:hover {
  border-color: var(--primary);
  background: #f0fbfa;
  transform: translateY(-3px);
  box-shadow: 0 8px 28px rgba(80, 201, 195, 0.15);
}
.download-icon {
  width: 32px;
  height: 32px;
  flex-shrink: 0;
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
}
.download-icon svg { width: 26px; height: 26px; }
.download-info { display: flex; flex-direction: column; }
.download-label { font-size: 0.7rem; color: var(--text-secondary); font-weight: 500; }
.download-store { font-size: 0.92rem; font-weight: 700; color: var(--text); }

/* --- FOOTER --- */
.footer {
  border-top: 1px solid #e8efee;
  padding: 44px 0;
  background: var(--bg);
}
.footer-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 18px;
  text-align: center;
}
.footer-brand {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: 'Lobster', cursive;
  font-size: 1.15rem;
  font-weight: 400;
}
.footer-brand img {
  width: 26px;
  height: 26px;
  border-radius: 6px;
}
.footer-links {
  display: flex;
  gap: 24px;
  flex-wrap: wrap;
  justify-content: center;
}
.footer-links a {
  font-size: 0.88rem;
  color: var(--text-secondary);
  transition: color var(--transition);
}
.footer-links a:hover { color: var(--primary-dark); }
.footer-copy {
  font-size: 0.8rem;
  color: var(--text-light);
}

/* --- RESPONSIVE --- */
@media (max-width: 1000px) {
  .features-grid { grid-template-columns: repeat(2, 1fr); }
  .download-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 640px) {
  .section { padding: 72px 0; }
  .hero { padding: 60px 0 0; }
  .br-desktop { display: none; }

  .hero-icon { width: 90px; height: 90px; border-radius: 22px; }
  .hero h1 { font-size: 2.6rem; }

  .phone-screenshot { width: 150px; }
  .phone-screenshot--center { transform: translateY(-14px); }
  .phone-screenshot--center:hover { transform: translateY(-20px) scale(1.02); }

  .features-grid { grid-template-columns: 1fr; }
  .download-grid { grid-template-columns: repeat(2, 1fr); }

  .nav-links { gap: 18px; font-size: 0.86rem; }

  .privacy-inner { padding: 60px 24px; }
}

/* --- Reveal animations --- */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(28px); }
  to   { opacity: 1; transform: translateY(0); }
}
.hero-inner { animation: fadeUp 0.65s cubic-bezier(.22,.68,0,1.2) both; }