/* ============================================================
   Smart Cleanup — Stylesheet
   Apple Human Interface inspired.
   Table of contents:
     1. Design tokens (variables)
     2. Base / reset
     3. Layout helpers
     4. Buttons & badges
     5. Header / navigation
     6. Hero
     7. Sections & headings
     8. About
     9. Feature cards
    10. Timeline (How it works)
    11. Benefits
    12. Hero logo showcase
    13. Call to action
    14. Footer
    15. Legal pages
    16. Animations (reveal on scroll)
    17. Responsive breakpoints
   ============================================================ */

/* ---------- 1. DESIGN TOKENS ---------- */
:root {
  --bg: #ffffff;
  --bg-muted: #f5f5f7;
  --text: #1d1d1f;
  --text-secondary: #6e6e73;
  --primary: #007aff;
  --primary-dark: #0062cc;
  --border: #e5e5ea;

  --radius-sm: 10px;
  --radius: 18px;
  --radius-lg: 28px;

  --shadow-sm: 0 2px 10px rgba(0, 0, 0, 0.05);
  --shadow: 0 8px 30px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 20px 60px rgba(0, 0, 0, 0.12);

  --container: 1120px;
  --gap: 24px;

  --font: -apple-system, BlinkMacSystemFont, "SF Pro Display", "Segoe UI",
    Roboto, Helvetica, Arial, sans-serif;

  --ease: cubic-bezier(0.4, 0, 0.2, 1);
}

/* ---------- 2. BASE / RESET ---------- */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font);
  color: var(--text);
  background: var(--bg);
  line-height: 1.6;
  font-size: 17px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

img {
  max-width: 100%;
  display: block;
}

a {
  color: var(--primary);
  text-decoration: none;
  transition: color 0.2s var(--ease), opacity 0.2s var(--ease);
}

a:hover {
  opacity: 0.85;
}

ul,
ol {
  list-style: none;
}

h1,
h2,
h3 {
  line-height: 1.15;
  letter-spacing: -0.02em;
  font-weight: 700;
}

:focus-visible {
  outline: 3px solid rgba(0, 122, 255, 0.5);
  outline-offset: 3px;
  border-radius: 6px;
}

/* ---------- 3. LAYOUT HELPERS ---------- */
.container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}

.grid {
  display: grid;
  gap: var(--gap);
}

.grid--3 {
  grid-template-columns: repeat(3, 1fr);
}

/* ---------- 4. BUTTONS & BADGES ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-weight: 600;
  font-size: 17px;
  padding: 14px 26px;
  border-radius: 980px;
  border: none;
  cursor: pointer;
  transition: transform 0.2s var(--ease), background 0.2s var(--ease),
    box-shadow 0.2s var(--ease);
  white-space: nowrap;
}

.btn--primary {
  background: var(--primary);
  color: #fff;
  box-shadow: 0 6px 20px rgba(0, 122, 255, 0.25);
}

.btn--primary:hover {
  background: var(--primary-dark);
  opacity: 1;
  transform: translateY(-2px);
  box-shadow: 0 10px 26px rgba(0, 122, 255, 0.32);
}

.btn--sm {
  font-size: 15px;
  padding: 10px 18px;
}

.btn--lg {
  font-size: 19px;
  padding: 17px 34px;
}

/* App Store badge placeholder */
.appstore-badge {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 9px 18px;
  border-radius: 12px;
  background: #000;
  color: #fff;
}

.appstore-badge:hover {
  opacity: 0.9;
}

.appstore-badge__icon {
  width: 22px;
  height: 22px;
  background: #fff;
  -webkit-mask: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'><path d='M16.365 1.43c0 1.14-.42 2.2-1.12 3-0.77 0.9-2.03 1.6-3.06 1.52-0.13-1.1 0.42-2.27 1.09-3.02 0.75-0.85 2.07-1.5 3.09-1.5zm3.4 16.2c-0.56 1.28-0.83 1.85-1.55 2.98-1 1.58-2.4 3.55-4.15 3.56-1.55 0.02-1.95-1.01-4.06-1-2.11 0.01-2.55 1.02-4.1 1.01-1.75-0.02-3.08-1.79-4.08-3.37-2.8-4.42-3.1-9.61-1.37-12.37 1.23-1.96 3.17-3.11 5-3.11 1.86 0 3.03 1.02 4.57 1.02 1.49 0 2.4-1.02 4.55-1.02 1.63 0 3.36 0.89 4.59 2.42-4.03 2.21-3.37 7.96 0.6 9.87z'/></svg>") center / contain no-repeat;
  mask: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'><path d='M16.365 1.43c0 1.14-.42 2.2-1.12 3-0.77 0.9-2.03 1.6-3.06 1.52-0.13-1.1 0.42-2.27 1.09-3.02 0.75-0.85 2.07-1.5 3.09-1.5zm3.4 16.2c-0.56 1.28-0.83 1.85-1.55 2.98-1 1.58-2.4 3.55-4.15 3.56-1.55 0.02-1.95-1.01-4.06-1-2.11 0.01-2.55 1.02-4.1 1.01-1.75-0.02-3.08-1.79-4.08-3.37-2.8-4.42-3.1-9.61-1.37-12.37 1.23-1.96 3.17-3.11 5-3.11 1.86 0 3.03 1.02 4.57 1.02 1.49 0 2.4-1.02 4.55-1.02 1.63 0 3.36 0.89 4.59 2.42-4.03 2.21-3.37 7.96 0.6 9.87z'/></svg>") center / contain no-repeat;
  flex-shrink: 0;
}

.appstore-badge__text {
  display: flex;
  flex-direction: column;
  line-height: 1.1;
  text-align: left;
}

.appstore-badge__text small {
  font-size: 10px;
  opacity: 0.85;
}

.appstore-badge__text strong {
  font-size: 17px;
  font-weight: 600;
}

/* ---------- 5. HEADER / NAVIGATION ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.8);
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  border-bottom: 1px solid var(--border);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 56px;
}

.nav__brand {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--text);
  font-weight: 600;
  font-size: 18px;
}

.nav__brand:hover {
  opacity: 1;
}

.nav__logo {
  border-radius: 7px;
}

.nav__menu {
  display: flex;
  align-items: center;
  gap: 28px;
}

.nav__menu a {
  color: var(--text);
  font-size: 15px;
  font-weight: 500;
}

.nav__menu .btn--primary {
  color: #fff;
}

.nav__toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 6px;
}

.nav__toggle span {
  width: 22px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: transform 0.3s var(--ease), opacity 0.3s var(--ease);
}

.nav__toggle.is-open span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.nav__toggle.is-open span:nth-child(2) {
  opacity: 0;
}
.nav__toggle.is-open span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* ---------- 6. HERO ---------- */
.hero {
  padding: 88px 0 72px;
  background: radial-gradient(
    ellipse at top,
    #f5f8ff 0%,
    var(--bg) 55%
  );
  overflow: hidden;
}

.hero__inner {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  align-items: center;
  gap: 48px;
}

.hero__icon {
  border-radius: 22px;
  box-shadow: var(--shadow);
  margin-bottom: 24px;
}

.hero__title {
  font-size: clamp(44px, 7vw, 76px);
  letter-spacing: -0.03em;
}

.hero__subtitle {
  margin-top: 20px;
  font-size: clamp(18px, 2.4vw, 22px);
  color: var(--text-secondary);
  max-width: 520px;
}

.hero__actions {
  margin-top: 34px;
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}

.hero__visual {
  display: flex;
  justify-content: center;
}

/* ---------- 7. SECTIONS & HEADINGS ---------- */
.section {
  padding: 96px 0;
}

.section--muted {
  background: var(--bg-muted);
}

.section__head {
  text-align: center;
  max-width: 680px;
  margin: 0 auto 56px;
}

.section__title {
  font-size: clamp(30px, 4.5vw, 46px);
}

.section__subtitle {
  margin-top: 16px;
  font-size: clamp(17px, 2vw, 20px);
  color: var(--text-secondary);
}

/* ---------- 8. ABOUT ---------- */
.about__list {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  max-width: 900px;
  margin: 0 auto;
}

.about__list li {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 18px 20px;
  font-weight: 500;
  font-size: 16px;
  box-shadow: var(--shadow-sm);
  transition: transform 0.2s var(--ease), box-shadow 0.2s var(--ease);
}

.about__list li:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow);
}

/* ---------- 9. FEATURE CARDS ---------- */
.card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px 28px;
  box-shadow: var(--shadow-sm);
  transition: transform 0.25s var(--ease), box-shadow 0.25s var(--ease);
}

.card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow);
}

.card__icon {
  width: 54px;
  height: 54px;
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0, 122, 255, 0.1);
  color: var(--primary);
  margin-bottom: 20px;
}

.card__title {
  font-size: 20px;
  margin-bottom: 8px;
}

.card__text {
  color: var(--text-secondary);
  font-size: 16px;
}

/* ---------- 10. TIMELINE (HOW IT WORKS) ---------- */
.timeline {
  max-width: 640px;
  margin: 0 auto;
  position: relative;
}

.timeline__step {
  display: flex;
  gap: 24px;
  padding-bottom: 40px;
  position: relative;
}

/* Connecting line */
.timeline__step:not(:last-child)::before {
  content: "";
  position: absolute;
  left: 27px;
  top: 56px;
  bottom: 0;
  width: 2px;
  background: linear-gradient(var(--primary), rgba(0, 122, 255, 0.2));
}

.timeline__step:last-child {
  padding-bottom: 0;
}

.timeline__num {
  flex-shrink: 0;
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: var(--primary);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  font-weight: 700;
  box-shadow: 0 6px 18px rgba(0, 122, 255, 0.3);
  z-index: 1;
}

.timeline__body {
  padding-top: 6px;
}

.timeline__title {
  font-size: 21px;
  margin-bottom: 4px;
}

.timeline__text {
  color: var(--text-secondary);
}

/* ---------- 11. BENEFITS ---------- */
.benefit {
  background: var(--bg-muted);
  border-radius: var(--radius);
  padding: 30px 28px;
  transition: transform 0.25s var(--ease), box-shadow 0.25s var(--ease);
}

.benefit:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow);
}

.benefit__title {
  font-size: 20px;
  margin-bottom: 8px;
}

.benefit__title::before {
  content: "";
  display: inline-block;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--primary);
  margin-right: 10px;
  vertical-align: middle;
}

.benefit__text {
  color: var(--text-secondary);
  font-size: 16px;
}

/* ---------- 12. HERO LOGO SHOWCASE ---------- */
.logo-showcase {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* Soft glow behind the app icon */
.logo-showcase::before {
  content: "";
  position: absolute;
  width: 78%;
  height: 78%;
  border-radius: 50%;
  background: radial-gradient(
    circle,
    rgba(0, 122, 255, 0.35) 0%,
    rgba(0, 122, 255, 0) 70%
  );
  filter: blur(20px);
  z-index: 0;
}

.logo-showcase__icon {
  position: relative;
  z-index: 1;
  width: 100%;
  max-width: 300px;
  height: auto;
  border-radius: 26%;
  box-shadow: var(--shadow-lg);
  animation: float 6s ease-in-out infinite;
}

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-14px); }
}

/* ---------- 12b. FAQ (accordion) ---------- */
.faq {
  max-width: 760px;
  margin: 0 auto;
}

.faq__item {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 4px 22px;
  margin-bottom: 14px;
  box-shadow: var(--shadow-sm);
  transition: box-shadow 0.2s var(--ease);
}

.faq__item[open] {
  box-shadow: var(--shadow);
}

.faq__q {
  font-size: 18px;
  font-weight: 600;
  color: var(--text);
  padding: 16px 30px 16px 0;
  cursor: pointer;
  list-style: none;
  position: relative;
}

/* Hide default marker */
.faq__q::-webkit-details-marker {
  display: none;
}

/* Custom +/- indicator */
.faq__q::after {
  content: "+";
  position: absolute;
  right: 0;
  top: 50%;
  transform: translateY(-50%);
  font-size: 24px;
  font-weight: 400;
  color: var(--primary);
  transition: transform 0.2s var(--ease);
}

.faq__item[open] .faq__q::after {
  content: "−";
}

.faq__a {
  color: var(--text-secondary);
  font-size: 16px;
  padding: 0 0 18px;
  margin: 0;
}

/* ---------- 13. CALL TO ACTION ---------- */
.cta {
  padding: 100px 0;
  background: linear-gradient(135deg, #007aff, #4aa3ff);
  color: #fff;
  text-align: center;
}

.cta__inner {
  max-width: 640px;
}

.cta__title {
  font-size: clamp(30px, 4.5vw, 46px);
}

.cta__text {
  margin: 18px auto 34px;
  font-size: clamp(17px, 2vw, 20px);
  opacity: 0.92;
}

.cta .btn--primary {
  background: #fff;
  color: var(--primary);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
}

.cta .btn--primary:hover {
  background: #f0f0f3;
}

/* ---------- 14. FOOTER ---------- */
.footer {
  background: var(--bg-muted);
  padding: 64px 0 28px;
  color: var(--text-secondary);
}

.footer__grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr;
  gap: 32px;
  padding-bottom: 40px;
  border-bottom: 1px solid var(--border);
}

.footer__title {
  color: var(--text);
  font-size: 22px;
}

.footer__tagline {
  margin-top: 6px;
  font-size: 15px;
}

.footer__heading {
  color: var(--text);
  font-size: 15px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin-bottom: 14px;
}

.footer__nav ul {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer__nav a {
  color: var(--text-secondary);
  font-size: 15px;
}

.footer__nav a:hover {
  color: var(--primary);
}

.footer__cta {
  display: flex;
  align-items: flex-start;
}

.footer__bottom {
  text-align: center;
  padding-top: 24px;
  font-size: 14px;
}

/* ---------- 15. LEGAL PAGES ---------- */
.legal {
  padding: 72px 0 96px;
}

.legal__inner {
  max-width: 760px;
  margin: 0 auto;
}

.legal__title {
  font-size: clamp(32px, 5vw, 48px);
  margin-bottom: 8px;
}

.legal__updated {
  color: var(--text-secondary);
  font-size: 15px;
  margin-bottom: 40px;
}

.legal h2 {
  font-size: 24px;
  margin: 36px 0 12px;
}

.legal h3 {
  font-size: 19px;
  color: var(--text);
  margin: 24px 0 8px;
}

.legal p,
.legal li {
  color: var(--text-secondary);
  font-size: 17px;
  margin-bottom: 12px;
}

/* Inline CTA button inside legal/support content keeps its own colors */
.legal .btn {
  color: #fff;
  margin-top: 8px;
}

.legal ul {
  list-style: disc;
  padding-left: 24px;
}

.legal a {
  font-weight: 500;
}

.back-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-bottom: 32px;
  font-weight: 500;
}

/* ---------- 16. ANIMATIONS (reveal on scroll) ---------- */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s var(--ease), transform 0.6s var(--ease);
  will-change: opacity, transform;
}

.reveal.is-visible {
  opacity: 1;
  transform: none;
}

/* Respect reduced-motion preference */
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  .reveal {
    opacity: 1;
    transform: none;
    transition: none;
  }
  .logo-showcase__icon {
    animation: none;
  }
}

/* ---------- 17. RESPONSIVE BREAKPOINTS ---------- */

/* Tablet */
@media (max-width: 900px) {
  .hero {
    padding: 64px 0 56px;
  }
  .hero__inner {
    grid-template-columns: 1fr;
    text-align: center;
    gap: 40px;
  }
  /* The big logo showcase already sits on top when stacked,
     so hide the small hero icon to avoid showing the logo twice. */
  .hero__icon {
    display: none;
  }
  .hero__subtitle {
    margin-left: auto;
    margin-right: auto;
  }
  .hero__actions {
    justify-content: center;
  }
  .hero__visual {
    order: -1;
  }

  .grid--3 {
    grid-template-columns: repeat(2, 1fr);
  }
  .about__list {
    grid-template-columns: repeat(2, 1fr);
  }
  .logo-showcase__icon {
    max-width: 100px;
  }
  .footer__grid {
    grid-template-columns: 1fr 1fr;
  }
  .footer__cta {
    grid-column: 1 / -1;
  }
}

/* Mobile */
@media (max-width: 620px) {
  body {
    font-size: 16px;
  }
  .section {
    padding: 64px 0;
  }

  /* Collapsible mobile menu */
  .nav__toggle {
    display: flex;
  }
  .nav__menu {
    position: absolute;
    top: 56px;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 4px;
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border);
    padding: 12px 24px 20px;
    transform: translateY(-12px);
    opacity: 0;
    pointer-events: none;
    transition: transform 0.25s var(--ease), opacity 0.25s var(--ease);
  }
  .nav__menu.is-open {
    transform: none;
    opacity: 1;
    pointer-events: auto;
  }
  .nav__menu li {
    padding: 6px 0;
  }
  .nav__menu .btn--primary {
    width: 100%;
    margin-top: 6px;
  }

  .grid--3 {
    grid-template-columns: 1fr;
  }
  .about__list {
    grid-template-columns: 1fr 1fr;
  }
  .footer__grid {
    grid-template-columns: 1fr;
    text-align: center;
  }
  .footer__nav ul {
    align-items: center;
  }
  .footer__cta {
    justify-content: center;
  }
  .hero__actions {
    flex-direction: column;
    align-items: stretch;
  }
  .hero__actions .btn,
  .hero__actions .appstore-badge {
    width: 100%;
    justify-content: center;
  }
}