/* ==========================================================================
   layout.css — Page-level structural layout
   ========================================================================== */

.container {
  width: min(var(--width-wide), 100% - 2 * var(--spacing-lg));
  margin-inline: auto;
}

.container--narrow {
  width: min(var(--width-content), 100% - 2 * var(--spacing-lg));
  margin-inline: auto;
}

/* ── Header ── */
.site-header {
  position: sticky;
  top: 0;
  z-index: var(--z-sticky);
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid transparent;
  transition: border-color var(--transition-base), box-shadow var(--transition-base);
}

.site-header.is-scrolled {
  border-bottom-color: var(--color-border);
  box-shadow: var(--shadow-sm);
}

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--spacing-md) 0;
  min-height: 64px;
}

/* ── Hero ── */
.hero {
  background: var(--gradient-hero);
  position: relative;
  overflow: hidden;
  padding: clamp(var(--spacing-3xl), 12vw, var(--spacing-5xl)) 0 clamp(var(--spacing-3xl), 14vw, 160px);
}

.hero::after {
  content: "";
  position: absolute;
  bottom: -1px;
  left: 0;
  right: 0;
  height: 80px;
  background: var(--color-bg);
  clip-path: ellipse(55% 100% at 50% 100%);
}

.hero__inner {
  display: grid;
  gap: var(--spacing-lg);
  position: relative;
  z-index: 1;
  text-align: center;
  justify-items: center;
}

/* ── Hero Feather Decoration ── */
.hero__decoration {
  position: absolute;
  top: -10%;
  right: -5%;
  width: 500px;
  height: 500px;
  opacity: 0.06;
  pointer-events: none;
  z-index: 0;
}

@media (min-width: 768px) {
  .hero__decoration {
    width: 700px;
    height: 700px;
    top: -15%;
    right: -8%;
  }
}

/* ── Hero Floating Particles ── */
.hero__particles {
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  overflow: hidden;
}

.particle {
  position: absolute;
  border-radius: 50%;
  opacity: 0;
  animation: particleFloat 18s ease-in-out infinite;
}

.particle--1 { width: 6px; height: 6px; background: var(--color-accent-red); top: 15%; left: 8%; animation-delay: 0s; animation-duration: 20s; }
.particle--2 { width: 8px; height: 8px; background: var(--color-accent-orange); top: 70%; left: 15%; animation-delay: 2.5s; animation-duration: 22s; }
.particle--3 { width: 5px; height: 5px; background: var(--color-accent-yellow); top: 25%; right: 12%; animation-delay: 5s; animation-duration: 18s; }
.particle--4 { width: 10px; height: 10px; background: var(--color-accent-green); top: 60%; right: 8%; animation-delay: 7.5s; animation-duration: 24s; }
.particle--5 { width: 4px; height: 4px; background: var(--color-accent-cyan); top: 40%; left: 25%; animation-delay: 3s; animation-duration: 16s; }
.particle--6 { width: 7px; height: 7px; background: var(--color-accent-blue); top: 80%; right: 25%; animation-delay: 10s; animation-duration: 20s; }
.particle--7 { width: 5px; height: 5px; background: var(--color-secondary); top: 10%; left: 60%; animation-delay: 6s; animation-duration: 22s; }
.particle--8 { width: 8px; height: 8px; background: var(--color-accent-green); top: 50%; right: 40%; animation-delay: 12s; animation-duration: 19s; }

@keyframes particleFloat {
  0%, 100% {
    opacity: 0;
    transform: translate(0, 0) scale(0.5);
  }
  10% {
    opacity: 0.5;
  }
  50% {
    opacity: 0.3;
    transform: translate(calc(var(--spacing-xl) * 1), calc(var(--spacing-3xl) * -1)) scale(1);
  }
  90% {
    opacity: 0.5;
  }
}

@media (prefers-reduced-motion: reduce) {
  .particle {
    animation: none;
    opacity: 0.2;
    transform: none;
  }
}

/* ── Sections ── */
.section {
  padding: var(--spacing-3xl) 0;
}

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

.section--dark {
  background: var(--gradient-cta);
  color: var(--color-text-inverse);
}

.section--dark .section__title,
.section--dark .section__subtitle {
  color: var(--color-text-inverse);
}

.section--dark .section__subtitle {
  color: var(--color-text-inverse-muted);
}

.section__header {
  text-align: center;
  max-width: 640px;
  margin: 0 auto var(--spacing-2xl);
}

/* ── Features Grid ── */
.features-grid {
  display: grid;
  gap: var(--spacing-lg);
  grid-template-columns: 1fr;
}

/* ── About Layout ── */
.about__content {
  max-width: 70ch;
  margin: 0 auto;
  display: grid;
  gap: var(--spacing-md);
  color: var(--color-text-secondary);
  line-height: var(--line-height-loose);
}

.about__pullquote {
  font-size: var(--font-size-xl);
  font-family: var(--font-family-heading);
  font-weight: var(--font-weight-semibold);
  color: var(--color-primary);
  border-left: 4px solid var(--color-secondary);
  padding-left: var(--spacing-lg);
  margin: var(--spacing-lg) 0;
  line-height: var(--line-height-snug);
}

/* ── App Download Section ── */
.download__inner {
  display: grid;
  gap: var(--spacing-2xl);
  align-items: center;
  justify-items: center;
  text-align: center;
}

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

.download__actions {
  display: flex;
  gap: var(--spacing-md);
  flex-wrap: wrap;
  justify-content: center;
}

/* Phone mockup */
.phone-mockup {
  width: 260px;
  height: 520px;
  background: #111;
  border-radius: 36px;
  padding: 12px;
  box-shadow: var(--shadow-xl), 0 0 0 2px rgba(255, 255, 255, 0.1);
  position: relative;
}

.phone-mockup__screen {
  width: 100%;
  height: 100%;
  border-radius: 26px;
  background: linear-gradient(180deg, #283593 0%, #1a237e 30%, #0e1538 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  position: relative;
}

.phone-mockup__screen img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 26px;
}

.phone-mockup__placeholder {
  opacity: 0.3;
  font-size: 48px;
}

/* Phone carousel */
.phone-carousel {
  position: relative;
  width: 100%;
  height: 100%;
}

.phone-carousel__slide {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 26px;
  opacity: 0;
  transition: opacity 0.6s ease;
}

.phone-carousel__slide.is-active {
  opacity: 1;
}

.phone-carousel__dots {
  position: absolute;
  bottom: 10px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 6px;
  z-index: 1;
}

.phone-carousel__dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.4);
  border: none;
  padding: 0;
  cursor: pointer;
  transition: background 0.3s ease, transform 0.3s ease;
}

.phone-carousel__dot.is-active {
  background: #fff;
  transform: scale(1.3);
}

.phone-mockup__notch {
  position: absolute;
  top: 12px;
  left: 50%;
  transform: translateX(-50%);
  width: 120px;
  height: 28px;
  background: #111;
  border-radius: 0 0 16px 16px;
  z-index: 2;
}

/* ── Founders Grid ── */
.founders-grid {
  display: grid;
  gap: var(--spacing-lg);
  grid-template-columns: 1fr;
}

/* ── Signup Section ── */
.signup-section {
  background: var(--gradient-cta);
  color: var(--color-text-inverse);
  position: relative;
  overflow: hidden;
}

.signup-section .section__title,
.signup-section .section__subtitle {
  color: var(--color-text-inverse);
}

.signup-section .section__subtitle {
  color: var(--color-text-inverse-muted);
}

.signup-section .section__header {
  margin-bottom: var(--spacing-xl);
}

.signup-section__glow {
  position: absolute;
  top: -120px;
  left: 50%;
  transform: translateX(-50%);
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(255, 160, 47, 0.12) 0%, transparent 70%);
  pointer-events: none;
}

.signup-card {
  max-width: 560px;
  margin: 0 auto;
  text-align: center;
  background: rgba(255, 255, 255, 0.06);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-2xl);
  padding: var(--spacing-2xl) var(--spacing-xl);
  position: relative;
}

.signup-card__decoration {
  position: absolute;
  top: -20px;
  right: -20px;
  opacity: 0.06;
  pointer-events: none;
}

.signup-card__decoration img {
  width: 120px;
  height: 120px;
}

/* ── Signup Form (dark theme) ── */
.signup-form {
  max-width: 100%;
  text-align: left;
}

.signup-form__fields {
  display: grid;
  gap: var(--spacing-md);
}

.signup-form .label {
  color: var(--color-text-inverse-muted);
}

.signup-form .required {
  color: var(--color-secondary);
}

.signup-form .input {
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(255, 255, 255, 0.15);
  color: var(--color-text-inverse);
}

.signup-form .input::placeholder {
  color: rgba(255, 255, 255, 0.35);
}

.signup-form .input:hover {
  border-color: rgba(255, 255, 255, 0.3);
}

.signup-form .input:focus-visible {
  border-color: var(--color-secondary);
  box-shadow: 0 0 0 3px rgba(255, 160, 47, 0.2);
}

.signup-form__action {
  display: flex;
  justify-content: center;
  margin-top: var(--spacing-md);
}

.signup-form__note {
  margin-top: var(--spacing-lg);
  font-size: var(--font-size-sm);
  color: var(--color-text-inverse-muted);
  text-align: center;
}

.signup-form .form-error {
  color: var(--color-secondary-light);
}

/* ── Footer ── */
.site-footer {
  background: var(--gradient-footer);
  color: var(--color-text-inverse);
  padding: var(--spacing-3xl) 0 var(--spacing-lg);
}

.footer__inner {
  display: grid;
  gap: var(--spacing-2xl);
}

.footer__top {
  display: grid;
  gap: var(--spacing-2xl);
}

.footer__bottom {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--spacing-md);
  padding-top: var(--spacing-lg);
  border-top: 1px solid var(--color-border-dark);
  text-align: center;
}

/* ── Legal Pages Layout ── */
.legal-content {
  max-width: 70ch;
  margin: 0 auto;
  line-height: var(--line-height-loose);
}

.legal-content h2 {
  margin: var(--spacing-2xl) 0 var(--spacing-md);
  font-size: var(--font-size-xl);
  color: var(--color-text);
}

.legal-content h3 {
  margin: var(--spacing-xl) 0 var(--spacing-sm);
  font-size: var(--font-size-lg);
}

.legal-content p {
  margin-bottom: var(--spacing-md);
  color: var(--color-text-secondary);
}

.legal-content ul {
  margin-bottom: var(--spacing-md);
  padding-left: var(--spacing-lg);
  color: var(--color-text-secondary);
}

.legal-content li {
  margin-bottom: var(--spacing-sm);
}

.legal-content h4 {
  margin: var(--spacing-lg) 0 var(--spacing-xs);
  font-size: var(--font-size-md);
  color: var(--color-text);
}

.legal-content ol {
  margin-bottom: var(--spacing-md);
  padding-left: var(--spacing-lg);
  color: var(--color-text-secondary);
}

.legal-content a {
  color: var(--color-primary);
}

.legal-content address {
  font-style: normal;
  margin-bottom: var(--spacing-md);
  color: var(--color-text-secondary);
  line-height: var(--line-height-loose);
}

.legal-content .table-responsive {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  margin-bottom: var(--spacing-lg);
}

.legal-content table {
  width: 100%;
  border-collapse: collapse;
  margin-bottom: var(--spacing-md);
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
}

.legal-content th,
.legal-content td {
  padding: var(--spacing-sm) var(--spacing-md);
  border: 1px solid var(--color-border, #e0e0e0);
  text-align: left;
  vertical-align: top;
}

.legal-content th {
  background-color: var(--color-surface, #f5f5f5);
  font-weight: 600;
  color: var(--color-text);
}

/* ── Responsive ── */
@media (min-width: 480px) {
  .features-grid {
    grid-template-columns: repeat(2, 1fr);
  }

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

  .signup-form__fields {
    grid-template-columns: 1fr 1fr;
  }
}

@media (min-width: 768px) {
  .section {
    padding: var(--spacing-4xl) 0;
  }

  .hero {
    padding: var(--spacing-5xl) 0 clamp(var(--spacing-3xl), 14vw, 180px);
  }

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

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

  .download__inner {
    grid-template-columns: 1fr 1fr;
    text-align: left;
    justify-items: start;
  }

  .download__actions {
    justify-content: flex-start;
  }

  .footer__top {
    grid-template-columns: 2fr 1fr 1fr;
    gap: var(--spacing-3xl);
  }

  .footer__bottom {
    flex-direction: row;
    justify-content: space-between;
  }
}

@media (min-width: 1024px) {
  .hero {
    padding: var(--spacing-5xl) 0 200px;
  }

  .phone-mockup {
    width: 300px;
    height: 600px;
  }
}

@media (min-width: 1280px) {
  /* xl — standard desktops */
}