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

:root {
  --green:       #48BB78;
  --green-dark:  #38A169;
  --blue:        #4299E1;
  --blue-dark:   #3182CE;
  --red:         #F56565;
  --bg:          #F5F7FA;
  --surface:     #FFFFFF;
  --text:        #2D3748;
  --text-muted:  #718096;
  --border:      #E2E8F0;
  --shadow-sm:   0 1px 3px rgba(45,55,72,.08);
  --shadow-md:   0 4px 24px rgba(45,55,72,.10);
  --shadow-lg:   0 20px 60px rgba(45,55,72,.14);
  --radius:      16px;
  --radius-lg:   24px;
  --font:        'Plus Jakarta Sans', system-ui, sans-serif;
  --transition:  .25s cubic-bezier(.4,0,.2,1);
}

[data-theme="dark"] {
  --bg:          #1A202C;
  --surface:     #2D3748;
  --text:        #F7FAFC;
  --text-muted:  #A0AEC0;
  --border:      #4A5568;
  --shadow-sm:   0 1px 3px rgba(0,0,0,.3);
  --shadow-md:   0 4px 24px rgba(0,0,0,.4);
  --shadow-lg:   0 20px 60px rgba(0,0,0,.5);
}

html { scroll-behavior: smooth; font-size: 16px; }

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

img, svg { display: block; max-width: 100%; }
a { color: var(--blue); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--blue-dark); }

.container {
  width: min(1120px, 92vw);
  margin-inline: auto;
}

/* ── Navigation ── */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  padding: 1rem 0;
  transition: background var(--transition), box-shadow var(--transition), padding var(--transition);
}

.nav.scrolled {
  background: color-mix(in srgb, var(--surface) 85%, transparent);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  box-shadow: var(--shadow-sm);
  padding: .65rem 0;
}

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

.nav-logo {
  display: flex;
  align-items: center;
  gap: .6rem;
  font-weight: 700;
  font-size: 1.15rem;
  color: var(--text);
}

.nav-logo svg { width: 36px; height: 36px; }

.nav-links {
  display: flex;
  align-items: center;
  gap: 2rem;
  list-style: none;
}

.nav-links a {
  color: var(--text-muted);
  font-size: .925rem;
  font-weight: 500;
}

.nav-links a:hover { color: var(--text); }

.nav-actions {
  display: flex;
  align-items: center;
  gap: .75rem;
}

.theme-toggle {
  width: 40px; height: 40px;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: var(--surface);
  cursor: pointer;
  display: grid;
  place-items: center;
  color: var(--text-muted);
  transition: all var(--transition);
}

.theme-toggle:hover { border-color: var(--blue); color: var(--blue); }

.menu-toggle {
  display: none;
  width: 40px; height: 40px;
  border: none;
  background: none;
  cursor: pointer;
  color: var(--text);
}

/* ── Buttons ── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  padding: .75rem 1.5rem;
  border-radius: 999px;
  font-family: var(--font);
  font-weight: 600;
  font-size: .925rem;
  border: none;
  cursor: pointer;
  transition: all var(--transition);
  text-decoration: none;
}

.btn-primary {
  background: var(--green);
  color: #fff;
  box-shadow: 0 4px 14px rgba(72,187,120,.35);
}

.btn-primary:hover {
  background: var(--green-dark);
  color: #fff;
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(72,187,120,.45);
}

.btn-outline {
  background: transparent;
  color: var(--text);
  border: 1.5px solid var(--border);
}

.btn-outline:hover {
  border-color: var(--blue);
  color: var(--blue);
}

.btn-lg { padding: 1rem 2rem; font-size: 1rem; }

/* ── Hero ── */
.hero {
  padding: 8rem 0 5rem;
  position: relative;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  pointer-events: none;
  overflow: hidden;
}

.hero-blob {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: .35;
  animation: float 8s ease-in-out infinite;
}

.hero-blob-1 {
  width: 500px; height: 500px;
  background: var(--green);
  top: -150px; right: -100px;
}

.hero-blob-2 {
  width: 400px; height: 400px;
  background: var(--blue);
  bottom: -100px; left: -100px;
  animation-delay: -4s;
}

@keyframes float {
  0%, 100% { transform: translate(0, 0) scale(1); }
  50% { transform: translate(20px, -20px) scale(1.05); }
}

.hero-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
  position: relative;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: .4rem;
  padding: .35rem .85rem;
  background: color-mix(in srgb, var(--green) 12%, transparent);
  color: var(--green-dark);
  border-radius: 999px;
  font-size: .8rem;
  font-weight: 600;
  margin-bottom: 1.25rem;
}

[data-theme="dark"] .hero-badge { color: var(--green); }

.hero h1 {
  font-size: clamp(2.4rem, 5vw, 3.5rem);
  font-weight: 800;
  line-height: 1.12;
  letter-spacing: -.02em;
  margin-bottom: 1.25rem;
}

.hero h1 span {
  background: linear-gradient(135deg, var(--green), var(--blue));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-desc {
  font-size: 1.125rem;
  color: var(--text-muted);
  max-width: 480px;
  margin-bottom: 2rem;
}

.hero-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-bottom: 2.5rem;
}

.hero-stats {
  display: flex;
  gap: 2.5rem;
}

.stat-value {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--text);
}

.stat-label {
  font-size: .8rem;
  color: var(--text-muted);
  font-weight: 500;
}

/* ── Phone Mockup ── */
.phone-wrap {
  display: flex;
  justify-content: center;
  perspective: 1000px;
}

.phone {
  width: 280px;
  background: #1A202C;
  border-radius: 36px;
  padding: 12px;
  box-shadow: var(--shadow-lg), inset 0 0 0 2px #4A5568;
  transform: rotateY(-8deg) rotateX(4deg);
  transition: transform .6s cubic-bezier(.4,0,.2,1);
  animation: phoneIn 1s ease-out;
}

.phone:hover { transform: rotateY(0deg) rotateX(0deg); }

@keyframes phoneIn {
  from { opacity: 0; transform: translateY(40px) rotateY(-8deg); }
  to   { opacity: 1; transform: translateY(0) rotateY(-8deg) rotateX(4deg); }
}

.phone-notch {
  width: 100px; height: 24px;
  background: #1A202C;
  border-radius: 0 0 14px 14px;
  margin: 0 auto -12px;
  position: relative;
  z-index: 2;
}

.phone-screen {
  background: var(--bg);
  border-radius: 26px;
  overflow: hidden;
  min-height: 520px;
  display: flex;
  flex-direction: column;
}

.phone-status {
  display: flex;
  justify-content: space-between;
  padding: 12px 20px 0;
  font-size: .7rem;
  font-weight: 600;
  color: var(--text-muted);
}

.phone-content {
  flex: 1;
  padding: 1.5rem 1.25rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}

.phone-label {
  font-size: .65rem;
  letter-spacing: .12em;
  color: var(--text-muted);
  text-transform: uppercase;
  margin-top: 2rem;
}

.phone-clock {
  font-size: 2.8rem;
  font-weight: 300;
  color: var(--text);
  margin: .5rem 0;
  font-variant-numeric: tabular-nums;
}

.phone-interval-label {
  font-size: .65rem;
  letter-spacing: .1em;
  color: var(--text-muted);
  text-transform: uppercase;
  margin-top: 1.5rem;
}

.phone-interval {
  font-size: 2.2rem;
  font-weight: 700;
  color: var(--text);
  margin: .25rem 0 1rem;
}

.phone-presets {
  display: flex;
  gap: .4rem;
  flex-wrap: wrap;
  justify-content: center;
}

.preset {
  padding: .35rem .7rem;
  border-radius: 999px;
  font-size: .7rem;
  font-weight: 600;
  background: var(--border);
  color: var(--text-muted);
}

.preset.active {
  background: var(--blue);
  color: #fff;
}

.phone-countdown {
  margin-top: auto;
  padding: 1rem;
}

.countdown-ring {
  width: 80px; height: 80px;
  margin: 0 auto .5rem;
  position: relative;
}

.countdown-ring svg {
  width: 100%; height: 100%;
  transform: rotate(-90deg);
}

.countdown-ring circle {
  fill: none;
  stroke-width: 4;
}

.countdown-ring .track { stroke: var(--border); }
.countdown-ring .progress {
  stroke: var(--green);
  stroke-linecap: round;
  stroke-dasharray: 226;
  stroke-dashoffset: 60;
  animation: countdown 4s linear infinite;
}

@keyframes countdown {
  from { stroke-dashoffset: 226; }
  to   { stroke-dashoffset: 0; }
}

.countdown-time {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  font-size: .85rem;
  font-weight: 700;
  color: var(--text);
  font-variant-numeric: tabular-nums;
}

.phone-next {
  font-size: .7rem;
  color: var(--text-muted);
}

.phone-action {
  margin: 0 1rem 1rem;
  padding: .85rem;
  border-radius: 999px;
  background: var(--green);
  color: #fff;
  text-align: center;
  font-weight: 700;
  font-size: .8rem;
  letter-spacing: .05em;
}

.phone-nav {
  display: flex;
  justify-content: space-around;
  padding: .75rem;
  border-top: 1px solid var(--border);
  background: var(--surface);
}

.phone-nav-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
  font-size: .55rem;
  color: var(--text-muted);
  font-weight: 600;
}

.phone-nav-item.active { color: var(--blue); }

.phone-nav-item svg { width: 18px; height: 18px; }

/* ── Sections ── */
section { padding: 5rem 0; }

.section-header {
  text-align: center;
  max-width: 600px;
  margin: 0 auto 3.5rem;
}

.section-tag {
  display: inline-block;
  font-size: .8rem;
  font-weight: 700;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--blue);
  margin-bottom: .75rem;
}

.section-header h2 {
  font-size: clamp(1.75rem, 3.5vw, 2.5rem);
  font-weight: 800;
  letter-spacing: -.02em;
  margin-bottom: .75rem;
}

.section-header p {
  color: var(--text-muted);
  font-size: 1.05rem;
}

/* ── Features ── */
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.feature-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 2rem;
  transition: all var(--transition);
}

.feature-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: color-mix(in srgb, var(--blue) 30%, var(--border));
}

.feature-icon {
  width: 52px; height: 52px;
  border-radius: 14px;
  display: grid;
  place-items: center;
  margin-bottom: 1.25rem;
  font-size: 1.4rem;
}

.feature-icon.green { background: color-mix(in srgb, var(--green) 15%, transparent); }
.feature-icon.blue  { background: color-mix(in srgb, var(--blue) 15%, transparent); }
.feature-icon.red   { background: color-mix(in srgb, var(--red) 15%, transparent); }

.feature-card h3 {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: .5rem;
}

.feature-card p {
  color: var(--text-muted);
  font-size: .925rem;
}

/* ── How It Works ── */
.how-section { background: var(--surface); }

.steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
  counter-reset: step;
}

.step {
  text-align: center;
  position: relative;
}

.step-num {
  width: 48px; height: 48px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--green), var(--blue));
  color: #fff;
  font-weight: 800;
  font-size: 1.1rem;
  display: grid;
  place-items: center;
  margin: 0 auto 1.25rem;
}

.step h3 {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: .5rem;
}

.step p {
  color: var(--text-muted);
  font-size: .925rem;
  max-width: 280px;
  margin: 0 auto;
}

/* ── Use Cases ── */
.use-cases {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.25rem;
}

.use-case {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  padding: 1.5rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: all var(--transition);
}

.use-case:hover { box-shadow: var(--shadow-sm); }

.use-case-icon {
  flex-shrink: 0;
  width: 44px; height: 44px;
  border-radius: 12px;
  background: color-mix(in srgb, var(--green) 12%, transparent);
  display: grid;
  place-items: center;
  font-size: 1.2rem;
}

.use-case h4 {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: .25rem;
}

.use-case p {
  font-size: .875rem;
  color: var(--text-muted);
}

/* ── Privacy Banner ── */
.privacy-banner {
  background: linear-gradient(135deg, color-mix(in srgb, var(--green) 8%, var(--surface)), color-mix(in srgb, var(--blue) 8%, var(--surface)));
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 3rem;
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 2rem;
  align-items: center;
}

.privacy-banner h2 {
  font-size: 1.75rem;
  font-weight: 800;
  margin-bottom: .75rem;
}

.privacy-banner p {
  color: var(--text-muted);
  max-width: 520px;
}

.privacy-points {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-top: 1.25rem;
}

.privacy-point {
  display: flex;
  align-items: center;
  gap: .4rem;
  font-size: .875rem;
  font-weight: 600;
  color: var(--green-dark);
}

[data-theme="dark"] .privacy-point { color: var(--green); }

.privacy-point svg { width: 18px; height: 18px; flex-shrink: 0; }

/* ── Download CTA ── */
.download-section {
  text-align: center;
  padding: 5rem 0;
}

.download-box {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 4rem 2rem;
  max-width: 640px;
  margin: 0 auto;
  box-shadow: var(--shadow-md);
}

.download-box h2 {
  font-size: 2rem;
  font-weight: 800;
  margin-bottom: .75rem;
}

.download-box p {
  color: var(--text-muted);
  margin-bottom: 2rem;
}

.store-badge {
  display: inline-flex;
  align-items: center;
  gap: .75rem;
  padding: .85rem 1.75rem;
  background: #1A202C;
  color: #fff;
  border-radius: 14px;
  transition: all var(--transition);
}

.store-badge:hover {
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(0,0,0,.25);
}

.store-badge svg { width: 28px; height: 28px; }

.store-text { text-align: left; }
.store-text small { display: block; font-size: .65rem; opacity: .8; }
.store-text span { font-size: 1rem; font-weight: 700; }

.version-tag {
  margin-top: 1.25rem;
  font-size: .8rem;
  color: var(--text-muted);
}

/* ── Footer ── */
.footer {
  border-top: 1px solid var(--border);
  padding: 2.5rem 0;
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: .5rem;
  font-weight: 700;
  color: var(--text);
}

.footer-brand svg { width: 28px; height: 28px; }

.footer-links {
  display: flex;
  gap: 1.5rem;
  list-style: none;
}

.footer-links a {
  color: var(--text-muted);
  font-size: .875rem;
  font-weight: 500;
}

.footer-copy {
  width: 100%;
  text-align: center;
  font-size: .8rem;
  color: var(--text-muted);
  margin-top: 1.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border);
}

/* ── Privacy Page ── */
.page-header {
  padding: 7rem 0 3rem;
  text-align: center;
}

.page-header h1 {
  font-size: 2.5rem;
  font-weight: 800;
  margin-bottom: .5rem;
}

.page-header p { color: var(--text-muted); }

.legal-content {
  max-width: 720px;
  margin: 0 auto 4rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 2.5rem;
}

.legal-content h2 {
  font-size: 1.2rem;
  font-weight: 700;
  margin: 2rem 0 .75rem;
}

.legal-content h2:first-child { margin-top: 0; }

.legal-content p, .legal-content li {
  color: var(--text-muted);
  font-size: .95rem;
  margin-bottom: .75rem;
}

.legal-content ul {
  padding-left: 1.25rem;
  margin-bottom: 1rem;
}

/* ── Animations ── */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity .6s ease, transform .6s ease;
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ── Responsive ── */
@media (max-width: 900px) {
  .hero-grid { grid-template-columns: 1fr; text-align: center; }
  .hero-desc { margin-inline: auto; }
  .hero-cta { justify-content: center; }
  .hero-stats { justify-content: center; }
  .phone-wrap { order: -1; }
  .phone { transform: none; width: 260px; }
  .phone:hover { transform: none; }
  .features-grid { grid-template-columns: 1fr; }
  .steps { grid-template-columns: 1fr; gap: 2.5rem; }
  .use-cases { grid-template-columns: 1fr; }
  .privacy-banner { grid-template-columns: 1fr; text-align: center; }
  .privacy-banner p { margin-inline: auto; }
  .privacy-points { justify-content: center; }
}

@media (max-width: 640px) {
  .nav-links { display: none; }
  .nav-links.open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 100%;
    left: 0; right: 0;
    background: var(--surface);
    padding: 1.5rem;
    border-bottom: 1px solid var(--border);
    box-shadow: var(--shadow-md);
    gap: 1rem;
  }
  .menu-toggle { display: grid; place-items: center; }
  .hero { padding-top: 6rem; }
  .hero-stats { gap: 1.5rem; }
}