/* ============================================
   Between Futures - Podcast Website
   Design System & Global Styles
   ============================================ */

/* --- CSS Custom Properties --- */
:root {
  /* Colors */
  --color-bg: #050505;
  --color-bg-alt: #0d0d0d;
  --color-bg-card: #111111;
  --color-bg-card-hover: #1a1a1a;
  --color-surface: #161616;
  --color-border: #222222;
  --color-border-light: #333333;
  --color-text: #f0f0f0;
  --color-text-secondary: #a0a0a0;
  --color-text-muted: #666666;
  --color-accent: #e0e0e0;
  --color-white: #ffffff;

  /* Typography */
  --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-display: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;

  /* Spacing */
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  --space-3xl: 4rem;
  --space-4xl: 6rem;
  --space-5xl: 8rem;

  /* Layout */
  --max-width: 1200px;
  --header-height: 72px;

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-base: 250ms ease;
  --transition-slow: 400ms ease;

  /* Border radius */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --radius-full: 9999px;
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  scroll-padding-top: var(--header-height);
}

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

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

a {
  color: inherit;
  text-decoration: none;
  transition: color var(--transition-fast);
}

ul, ol {
  list-style: none;
}

button {
  background: none;
  border: none;
  cursor: pointer;
  font-family: inherit;
  color: inherit;
}

/* --- Utility Classes --- */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-xl);
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* --- Section Base --- */
.section {
  padding: var(--space-5xl) 0;
}

.section__label {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  margin-bottom: var(--space-lg);
}

.section__title {
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.02em;
  color: var(--color-white);
  margin-bottom: var(--space-lg);
}

.section__subtitle {
  font-size: clamp(1.05rem, 2vw, 1.2rem);
  color: var(--color-text-secondary);
  line-height: 1.7;
  max-width: 680px;
}

/* --- Header / Navigation --- */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-height);
  z-index: 1000;
  background: rgba(5, 5, 5, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid transparent;
  transition: border-color var(--transition-base);
}

.header--scrolled {
  border-bottom-color: var(--color-border);
}

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.header__logo {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.header__logo img {
  height: 36px;
  width: 36px;
  border-radius: var(--radius-sm);
}

.header__nav {
  display: flex;
  align-items: center;
  gap: var(--space-2xl);
}

.header__nav-links {
  display: flex;
  gap: var(--space-xl);
}

.header__nav-link {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-text-secondary);
  transition: color var(--transition-fast);
  position: relative;
}

.header__nav-link:hover,
.header__nav-link--active {
  color: var(--color-white);
}

.header__cta {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  padding: 0.5rem 1.25rem;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-bg);
  background-color: var(--color-white);
  border-radius: var(--radius-full);
  transition: all var(--transition-fast);
}

.header__cta:hover {
  background-color: var(--color-accent);
  transform: translateY(-1px);
}

/* Mobile menu button */
.header__menu-btn {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: var(--space-sm);
}

.header__menu-btn span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--color-text);
  border-radius: 2px;
  transition: all var(--transition-base);
}

/* Mobile Navigation */
.mobile-nav {
  display: none;
  position: fixed;
  top: var(--header-height);
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--color-bg);
  z-index: 999;
  padding: var(--space-2xl);
  flex-direction: column;
  gap: var(--space-xl);
}

.mobile-nav--open {
  display: flex;
}

.mobile-nav__link {
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--color-text-secondary);
  transition: color var(--transition-fast);
  padding: var(--space-sm) 0;
}

.mobile-nav__link:hover {
  color: var(--color-white);
}

.mobile-nav__cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  padding: 0.875rem 1.5rem;
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-bg);
  background-color: var(--color-white);
  border-radius: var(--radius-full);
  margin-top: var(--space-md);
  width: fit-content;
}

/* --- Hero Section --- */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: calc(var(--header-height) + var(--space-4xl)) var(--space-xl) var(--space-4xl);
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 800px;
  height: 800px;
  background: radial-gradient(circle, rgba(255,255,255,0.02) 0%, transparent 70%);
  pointer-events: none;
}

.hero__content {
  max-width: 800px;
  position: relative;
  z-index: 1;
}

.hero__logo {
  width: min(500px, 80vw);
  margin: 0 auto var(--space-2xl);
}

.hero__tagline {
  font-size: clamp(1.05rem, 2.2vw, 1.3rem);
  color: var(--color-text-secondary);
  line-height: 1.7;
  margin-bottom: var(--space-3xl);
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

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

.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  padding: 0.875rem 2rem;
  font-size: 0.9375rem;
  font-weight: 600;
  border-radius: var(--radius-full);
  transition: all var(--transition-base);
  white-space: nowrap;
}

.btn--primary {
  background-color: var(--color-white);
  color: var(--color-bg);
}

.btn--primary:hover {
  background-color: var(--color-accent);
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(255, 255, 255, 0.1);
}

.btn--outline {
  border: 1px solid var(--color-border-light);
  color: var(--color-text);
  background-color: transparent;
}

.btn--outline:hover {
  border-color: var(--color-text-secondary);
  background-color: rgba(255, 255, 255, 0.03);
  transform: translateY(-2px);
}

.btn__icon {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
}

/* Scroll indicator */
.hero__scroll {
  position: absolute;
  bottom: var(--space-2xl);
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-sm);
  color: var(--color-text-muted);
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  animation: bounce 2s infinite;
}

@keyframes bounce {
  0%, 20%, 50%, 80%, 100% { transform: translateX(-50%) translateY(0); }
  40% { transform: translateX(-50%) translateY(-8px); }
  60% { transform: translateX(-50%) translateY(-4px); }
}

/* --- About Section --- */
.about {
  background-color: var(--color-bg);
  position: relative;
}

.about__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-4xl);
  align-items: center;
}

.about__content {
  max-width: 540px;
}

.about__text {
  font-size: 1.0625rem;
  color: var(--color-text-secondary);
  line-height: 1.8;
  margin-bottom: var(--space-xl);
}

.about__features {
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
  margin-top: var(--space-2xl);
}

.about__feature {
  display: flex;
  align-items: flex-start;
  gap: var(--space-md);
}

.about__feature-icon {
  flex-shrink: 0;
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  color: var(--color-text-secondary);
}

.about__feature-text h4 {
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--color-white);
  margin-bottom: var(--space-xs);
}

.about__feature-text p {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  line-height: 1.6;
}

.about__visual {
  display: flex;
  justify-content: center;
  align-items: center;
}

.about__visual-card {
  position: relative;
  width: 100%;
  max-width: 460px;
  aspect-ratio: 1;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-xl);
  padding: var(--space-3xl);
}

.about__visual-stat {
  text-align: center;
}

.about__visual-stat-value {
  font-size: clamp(2.5rem, 5vw, 3.5rem);
  font-weight: 800;
  color: var(--color-white);
  letter-spacing: -0.03em;
  line-height: 1;
}

.about__visual-stat-label {
  font-size: 0.8125rem;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-top: var(--space-sm);
}

.about__visual-divider {
  width: 60px;
  height: 1px;
  background: var(--color-border-light);
}

/* --- Hosts Section --- */
.hosts {
  background-color: var(--color-bg-alt);
}

.hosts__header {
  text-align: center;
  margin-bottom: var(--space-4xl);
}

.hosts__header .section__subtitle {
  margin-left: auto;
  margin-right: auto;
}

.hosts__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-2xl);
}

.host-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  overflow: hidden;
  transition: all var(--transition-slow);
  display: flex;
  flex-direction: column;
}

.host-card:hover {
  border-color: var(--color-border-light);
  transform: translateY(-4px);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
}

.host-card__image-wrapper {
  width: 100%;
  aspect-ratio: 3 / 4;
  overflow: hidden;
  position: relative;
  background: var(--color-surface);
}

.host-card__image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 25%;
  transition: transform var(--transition-slow);
}

/* Per-host framing adjustments */
.host-card__image--flavio {
  object-position: center 0%;
  scale: 1.45;
  transform-origin: center top;
}

.host-card__image--rodrigo {
  object-position: center 0%;
  scale: 1.2;
  transform-origin: center top;
}

.host-card:hover .host-card__image {
  transform: scale(1.03);
}

.host-card__content {
  padding: var(--space-2xl);
  display: flex;
  flex-direction: column;
  flex: 1;
}

.host-card__name {
  font-size: 1.375rem;
  font-weight: 700;
  color: var(--color-white);
  margin-bottom: var(--space-xs);
}

.host-card__role {
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: var(--space-lg);
}

.host-card__bio {
  font-size: 0.9375rem;
  color: var(--color-text-secondary);
  line-height: 1.75;
  margin-bottom: var(--space-xl);
}

.host-card__links {
  display: flex;
  gap: var(--space-md);
  margin-top: auto;
}

.host-card__link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--color-text-muted);
  transition: color var(--transition-fast);
}

.host-card__link:hover {
  color: var(--color-white);
}

.host-card__link svg {
  width: 16px;
  height: 16px;
}

/* --- Episodes Section --- */
.episodes {
  background: var(--color-bg);
}

.episodes__header {
  text-align: center;
  margin-bottom: var(--space-3xl);
}

.episodes__header .section__subtitle {
  margin-left: auto;
  margin-right: auto;
}

.episodes__player {
  max-width: 800px;
  margin: 0 auto;
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.episodes__player iframe {
  display: block;
}

.episodes__cta {
  text-align: center;
  margin-top: var(--space-2xl);
}

/* --- Subscribe / Listen Section --- */
.subscribe {
  background: var(--color-bg);
  text-align: center;
}

.subscribe__header {
  margin-bottom: var(--space-4xl);
}

.subscribe__header .section__subtitle {
  margin-left: auto;
  margin-right: auto;
}

.subscribe__platforms {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-xl);
  max-width: 900px;
  margin: 0 auto;
}

.platform-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-lg);
  padding: var(--space-2xl) var(--space-xl);
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  transition: all var(--transition-base);
  text-decoration: none;
}

.platform-card:hover {
  border-color: var(--color-border-light);
  background: var(--color-bg-card-hover);
  transform: translateY(-4px);
  box-shadow: 0 16px 48px rgba(0, 0, 0, 0.3);
}

.platform-card__icon {
  width: 56px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-lg);
}

.platform-card__icon svg {
  width: 36px;
  height: 36px;
}

.platform-card__icon--spotify { background: #1DB95420; color: #1DB954; }
.platform-card__icon--apple { background: #FC3C4420; color: #FC3C44; }
.platform-card__icon--youtube { background: #FF000020; color: #FF0000; }

.platform-card__name {
  font-size: 1.0625rem;
  font-weight: 600;
  color: var(--color-white);
}

.platform-card__action {
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--color-text-muted);
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  transition: color var(--transition-fast);
}

.platform-card:hover .platform-card__action {
  color: var(--color-text-secondary);
}

.platform-card__action svg {
  width: 14px;
  height: 14px;
  transition: transform var(--transition-fast);
}

.platform-card:hover .platform-card__action svg {
  transform: translateX(3px);
}

/* --- Newsletter Section --- */
.newsletter {
  background: var(--color-bg-alt);
  text-align: center;
}

.newsletter__inner {
  max-width: 600px;
  margin: 0 auto;
}

.newsletter__form {
  display: flex;
  gap: var(--space-md);
  margin-top: var(--space-2xl);
}

.newsletter__input {
  flex: 1;
  padding: 0.875rem 1.25rem;
  font-size: 0.9375rem;
  font-family: var(--font-primary);
  color: var(--color-text);
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  outline: none;
  transition: border-color var(--transition-fast);
}

.newsletter__input::placeholder {
  color: var(--color-text-muted);
}

.newsletter__input:focus {
  border-color: var(--color-text-muted);
}

.newsletter__btn {
  padding: 0.875rem 1.75rem;
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--color-bg);
  background: var(--color-white);
  border-radius: var(--radius-full);
  transition: all var(--transition-fast);
  white-space: nowrap;
}

.newsletter__btn:hover {
  background: var(--color-accent);
  transform: translateY(-1px);
}

/* --- Contact / Sponsorship Section --- */
.contact {
  background: var(--color-bg);
  text-align: center;
}

.contact__inner {
  max-width: 800px;
  margin: 0 auto;
}

.contact__cards {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-xl);
  margin-top: var(--space-3xl);
}

.contact__card {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-md);
  padding: var(--space-2xl) var(--space-lg);
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  transition: all var(--transition-base);
  text-decoration: none;
}

.contact__card:hover {
  border-color: var(--color-border-light);
  background: var(--color-bg-card-hover);
  transform: translateY(-4px);
  box-shadow: 0 16px 48px rgba(0, 0, 0, 0.3);
}

.contact__card-icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  color: var(--color-text-secondary);
  transition: color var(--transition-fast);
}

.contact__card:hover .contact__card-icon {
  color: var(--color-white);
}

.contact__card-title {
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-white);
}

.contact__card-text {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  line-height: 1.5;
}

/* --- Footer --- */
.footer {
  background: var(--color-bg);
  border-top: 1px solid var(--color-border);
  padding: var(--space-3xl) 0;
}

.footer__inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-2xl);
}

.footer__logo img {
  height: 22px;
  width: auto;
  opacity: 0.6;
  transition: opacity var(--transition-fast);
}

.footer__logo:hover img {
  opacity: 1;
}

.footer__socials {
  display: flex;
  gap: var(--space-lg);
}

.footer__social {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-full);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  color: var(--color-text-muted);
  transition: all var(--transition-fast);
}

.footer__social:hover {
  border-color: var(--color-border-light);
  color: var(--color-white);
  transform: translateY(-2px);
}

.footer__social svg {
  width: 18px;
  height: 18px;
}

.footer__bottom {
  display: flex;
  align-items: center;
  gap: var(--space-xl);
  font-size: 0.8125rem;
  color: var(--color-text-muted);
}

.footer__bottom a:hover {
  color: var(--color-text-secondary);
}

/* --- Animations (scroll reveal) --- */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

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

.reveal--delay-1 { transition-delay: 0.1s; }
.reveal--delay-2 { transition-delay: 0.2s; }
.reveal--delay-3 { transition-delay: 0.3s; }

/* --- Responsive Design --- */
@media (max-width: 1024px) {
  .about__grid {
    grid-template-columns: 1fr;
    gap: var(--space-3xl);
  }

  .about__visual {
    order: -1;
  }

  .about__visual-card {
    max-width: 360px;
    aspect-ratio: auto;
    padding: var(--space-2xl);
    flex-direction: row;
    gap: var(--space-2xl);
  }

  .about__visual-divider {
    width: 1px;
    height: 60px;
  }
}

@media (max-width: 768px) {
  :root {
    --space-5xl: 5rem;
    --space-4xl: 3.5rem;
  }

  /* Header mobile */
  .header__nav-links,
  .header__cta {
    display: none;
  }

  .header__menu-btn {
    display: flex;
  }

  /* Menu open state */
  .menu-open .header__menu-btn span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
  }
  .menu-open .header__menu-btn span:nth-child(2) {
    opacity: 0;
  }
  .menu-open .header__menu-btn span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
  }

  /* Hero */
  .hero {
    min-height: 90vh;
  }

  .hero__logo {
    width: min(360px, 75vw);
  }

  /* Hosts */
  .hosts__grid {
    grid-template-columns: 1fr;
    max-width: 500px;
    margin-left: auto;
    margin-right: auto;
  }

  /* Subscribe */
  .subscribe__platforms {
    grid-template-columns: 1fr;
    max-width: 400px;
  }

  /* Contact */
  .contact__cards {
    grid-template-columns: 1fr;
    max-width: 400px;
    margin-left: auto;
    margin-right: auto;
  }

  /* Newsletter */
  .newsletter__form {
    flex-direction: column;
  }

  /* Footer */
  .footer__bottom {
    flex-direction: column;
    gap: var(--space-md);
    text-align: center;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 var(--space-lg);
  }

  .hero__actions {
    flex-direction: column;
    align-items: center;
  }

  .btn {
    width: 100%;
    justify-content: center;
    max-width: 280px;
  }

  .about__visual-card {
    flex-direction: column;
    gap: var(--space-lg);
  }

  .about__visual-divider {
    width: 60px;
    height: 1px;
  }
}