/* ============================================================
   TERM TALK PODCAST — styles.css
   Design system: custom properties → reset → layout →
   components → sections → responsive
   ============================================================ */

/* ============================================================
   1. DESIGN TOKENS
   ============================================================ */
:root {
  /* Brand colours */
  --color-blue:        #2E6DB4;
  --color-teal:        #4ECDC4;
  --color-blue-dark:   #1E4F8A;
  --color-teal-light:  #A8EDEA;
  --color-teal-faint:  #EBF9F8;

  /* Neutrals */
  --color-ink:         #1A1A2E;
  --color-ink-muted:   #5A5A72;
  --color-surface:     #FFFFFF;
  --color-bg:          #F7F9FC;
  --color-border:      #E2E8F0;

  /* Semantic */
  --color-error:       #c0392b;

  /* Typography */
  --font-sans: 'DM Sans', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

  --text-xs:   0.75rem;
  --text-sm:   0.875rem;
  --text-base: 1rem;
  --text-lg:   1.125rem;
  --text-xl:   1.25rem;
  --text-2xl:  1.5rem;
  --text-3xl:  1.875rem;
  --text-4xl:  2.25rem;
  --text-5xl:  3rem;

  --weight-regular: 400;
  --weight-medium:  500;
  --weight-bold:    700;

  --leading-tight:  1.15;
  --leading-snug:   1.35;
  --leading-normal: 1.6;
  --leading-loose:  1.75;

  --tracking-wide:  0.06em;
  --tracking-wider: 0.12em;

  /* Spacing */
  --space-1:  0.25rem;
  --space-2:  0.5rem;
  --space-3:  0.75rem;
  --space-4:  1rem;
  --space-5:  1.25rem;
  --space-6:  1.5rem;
  --space-8:  2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;

  /* Layout */
  --container-max:   1100px;
  --container-prose: 700px;
  --section-gap:     var(--space-20);
  --nav-height:      108px;

  /* Borders */
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-xl: 28px;

  /* Shadows */
  --shadow-sm: 0 1px 4px rgba(46, 109, 180, 0.07), 0 1px 2px rgba(0, 0, 0, 0.04);
  --shadow-md: 0 4px 18px rgba(46, 109, 180, 0.11), 0 2px 6px rgba(0, 0, 0, 0.05);
  --shadow-lg: 0 12px 40px rgba(46, 109, 180, 0.16), 0 4px 12px rgba(0, 0, 0, 0.06);

  /* Transitions */
  --ease-out:    cubic-bezier(0.22, 1, 0.36, 1);
  --transition-fast: 150ms var(--ease-out);
  --transition-base: 250ms var(--ease-out);
}

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  font-size: 16px;
}

body {
  font-family: var(--font-sans);
  font-size: var(--text-base);
  line-height: var(--leading-normal);
  color: var(--color-ink);
  background-color: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

a {
  color: var(--color-blue);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

/* Accessible focus styles */
:focus-visible {
  outline: 3px solid var(--color-teal);
  outline-offset: 3px;
  border-radius: 3px;
}

/* Scroll margin for sticky nav */
[id] {
  scroll-margin-top: calc(var(--nav-height) + var(--space-4));
}

/* ============================================================
   3. LAYOUT UTILITIES
   ============================================================ */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--space-6);
}

.container--prose {
  max-width: var(--container-prose);
}

.section {
  padding-block: var(--section-gap);
}

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

/* ============================================================
   4. TYPOGRAPHY UTILITIES
   ============================================================ */
.eyebrow,
.section__label {
  display: block;
  font-size: var(--text-xs);
  font-weight: var(--weight-medium);
  letter-spacing: var(--tracking-wider);
  text-transform: uppercase;
  color: var(--color-blue);
  margin-bottom: var(--space-3);
}

.section__header {
  margin-bottom: var(--space-12);
}

.section__title {
  font-size: clamp(var(--text-2xl), 4vw, var(--text-4xl));
  font-weight: var(--weight-bold);
  line-height: var(--leading-snug);
  color: var(--color-ink);
  max-width: var(--container-prose);
  letter-spacing: -0.02em;
}

.section__title--wide {
  max-width: 800px;
}

/* ============================================================
   5. BUTTONS
   ============================================================ */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: 0.75rem 1.5rem;
  border-radius: var(--radius-sm);
  font-family: var(--font-sans);
  font-size: var(--text-base);
  font-weight: var(--weight-medium);
  line-height: 1;
  cursor: pointer;
  border: 2px solid transparent;
  text-decoration: none;
  transition: background-color var(--transition-fast),
              border-color var(--transition-fast),
              color var(--transition-fast),
              box-shadow var(--transition-fast);
  white-space: nowrap;
}

.btn--primary {
  background-color: var(--color-blue);
  color: #fff;
  border-color: var(--color-blue);
}

.btn--primary:hover,
.btn--primary:focus-visible {
  background-color: var(--color-blue-dark);
  border-color: var(--color-blue-dark);
  box-shadow: 0 4px 16px rgba(46, 109, 180, 0.35);
  text-decoration: none;
}

.btn--ghost {
  background-color: transparent;
  color: var(--color-blue);
  border-color: var(--color-blue);
}

.btn--ghost:hover,
.btn--ghost:focus-visible {
  background-color: var(--color-blue);
  color: #fff;
  text-decoration: none;
}

.btn--sm {
  padding: 0.5rem 1rem;
  font-size: var(--text-sm);
}

/* ============================================================
   6. NAVIGATION
   ============================================================ */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: rgba(247, 249, 252, 0.92);
  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);
  height: var(--nav-height);
  display: flex;
  align-items: center;
}

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

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  gap: var(--space-6);
}

.nav__logo-link {
  display: flex;
  align-items: center;
  flex-shrink: 0;
}

.nav__logo {
  height: 54px;
  width: auto;
  display: block;
}

.nav__links {
  display: flex;
  align-items: center;
  gap: var(--space-6);
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav__links a {
  font-size: var(--text-sm);
  font-weight: var(--weight-medium);
  color: var(--color-ink-muted);
  text-decoration: none;
  transition: color var(--transition-fast);
}

.nav__links a:hover {
  color: var(--color-blue);
}

.nav__links a[aria-current="page"] {
  color: var(--color-blue);
  font-weight: var(--weight-bold);
}

.nav .nav__cta,
a.nav__cta {
  display: inline-flex !important;
  align-items: center;
  background: var(--color-blue) !important;
  color: #fff !important;
  padding: 0.55rem 1.4rem !important;
  border-radius: var(--radius-sm) !important;
  font-size: var(--text-sm);
  font-weight: var(--weight-medium);
  text-decoration: none !important;
  transition: background var(--transition-fast);
  white-space: nowrap;
  flex-shrink: 0;
}

.nav .nav__cta:hover,
a.nav__cta:hover,
.nav .nav__cta:focus-visible,
a.nav__cta:focus-visible {
  background: var(--color-blue-dark) !important;
  color: #fff !important;
  text-decoration: none !important;
}

@media (max-width: 768px) {
  .nav__links { display: none; }
}

/* ============================================================
   7. HERO
   ============================================================ */
.hero {
  position: relative;
  overflow: hidden;
  padding-block: var(--space-20) var(--space-16);
  background: linear-gradient(
    135deg,
    var(--color-bg) 55%,
    var(--color-teal-faint) 100%
  );
}

.hero__inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-12);
  align-items: center;
}

.hero__content {
  max-width: 560px;
}

.hero__title {
  font-size: clamp(4rem, 10vw, 6.5rem);
  font-weight: var(--weight-bold);
  line-height: var(--leading-tight);
  letter-spacing: -0.03em;
  color: var(--color-ink);
  margin-bottom: var(--space-6);
}

.hero__tagline {
  font-size: var(--text-lg);
  line-height: var(--leading-loose);
  color: var(--color-ink-muted);
  margin-bottom: var(--space-8);
  max-width: 50ch;
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-4);
  align-items: center;
}

/* Hero visual — host image + decorative rings */
.hero__visual {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: flex-end;
}

.hero__wave-ring {
  position: absolute;
  border-radius: 50%;
  border: 2px solid var(--color-teal);
  pointer-events: none;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
}

.hero__wave-ring--1 {
  width: 340px;
  height: 340px;
  opacity: 0.22;
}

.hero__wave-ring--2 {
  width: 500px;
  height: 500px;
  opacity: 0.10;
}

.hero__host-image {
  position: relative;
  z-index: 1;
  max-height: 480px;
  object-fit: contain;
  object-position: bottom;
  filter: drop-shadow(0 20px 40px rgba(46, 109, 180, 0.18));
}

/* Subtle animated scroll cue */
.hero__scroll-cue {
  position: absolute;
  bottom: var(--space-8);
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
}

.hero__scroll-line {
  display: block;
  width: 1px;
  height: 48px;
  background: linear-gradient(to bottom, var(--color-teal), transparent);
  animation: scrollPulse 2s ease-in-out infinite;
}

@keyframes scrollPulse {
  0%, 100% { opacity: 0.6; transform: scaleY(1); }
  50%       { opacity: 1;   transform: scaleY(0.7); }
}

/* ============================================================
   8. EPISODE SECTION
   ============================================================ */
.episode-card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-8);
  box-shadow: var(--shadow-sm);
}

.episode-card__meta {
  font-size: var(--text-xs);
  font-weight: var(--weight-medium);
  letter-spacing: var(--tracking-wide);
  text-transform: uppercase;
  color: var(--color-blue);
  margin-bottom: var(--space-3);
}

.episode-card__title {
  font-size: var(--text-xl);
  font-weight: var(--weight-bold);
  line-height: var(--leading-snug);
  color: var(--color-ink);
  margin-bottom: var(--space-6);
  letter-spacing: -0.01em;
}

.episode-card__player iframe {
  width: 100%;
  border: none;
  border-radius: var(--radius-md);
  display: block;
}

.episode-card__error {
  text-align: center;
  padding: var(--space-8);
}

.episode-card__error p {
  color: var(--color-ink-muted);
  margin-bottom: var(--space-4);
}

/* Skeleton loading */
.skeleton {
  background: linear-gradient(
    90deg,
    var(--color-border) 25%,
    #e8edf5 50%,
    var(--color-border) 75%
  );
  background-size: 200% 100%;
  border-radius: var(--radius-sm);
  animation: shimmer 1.6s ease-in-out infinite;
}

@keyframes shimmer {
  0%   { background-position: -200% 0; }
  100% { background-position:  200% 0; }
}

.skeleton--meta   { height: 14px; width: 120px; margin-bottom: var(--space-4); }
.skeleton--title  { height: 26px; width: 70%;   margin-bottom: var(--space-6); }
.skeleton--player { height: 182px; width: 100%; border-radius: var(--radius-md); }

/* ============================================================
   9. WHY TERM TALK
   ============================================================ */
.why__body {
  max-width: var(--container-prose);
  margin-bottom: var(--space-16);
}

.why__lead {
  font-size: var(--text-lg);
  line-height: var(--leading-loose);
  color: var(--color-ink-muted);
}

.why__text {
  font-size: var(--text-base);
  line-height: var(--leading-loose);
  color: var(--color-ink-muted);
}

/* Pullquote */
.pullquote {
  position: relative;
  border-left: 4px solid var(--color-teal);
  background: linear-gradient(
    90deg,
    rgba(78, 205, 196, 0.08) 0%,
    transparent 100%
  );
  padding: var(--space-6) var(--space-8);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  margin-block: var(--space-8);
}

.pullquote__text {
  font-size: clamp(var(--text-xl), 3vw, var(--text-2xl));
  font-weight: var(--weight-medium);
  font-style: italic;
  line-height: var(--leading-snug);
  color: var(--color-ink);
  letter-spacing: -0.01em;
}

/* Three pillar cards */
.pillars {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-6);
}

.pillar-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-8) var(--space-6);
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--transition-base), transform var(--transition-base);
}

.pillar-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-3px);
}

.pillar-card__icon {
  width: 52px;
  height: 52px;
  background: linear-gradient(135deg, var(--color-blue), var(--color-teal));
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--space-4);
  flex-shrink: 0;
}

.pillar-card__title {
  font-size: var(--text-lg);
  font-weight: var(--weight-bold);
  color: var(--color-ink);
  margin-bottom: var(--space-2);
  letter-spacing: -0.01em;
}

.pillar-card__text {
  font-size: var(--text-sm);
  line-height: var(--leading-loose);
  color: var(--color-ink-muted);
}

/* ============================================================
   10. HOST BIO
   ============================================================ */
.host {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-12);
  align-items: start;
}

.host__photo-wrap {
  position: relative;
  max-width: 420px;
}

/* Teal decorative blob behind the photo */
.host__photo-wrap::before {
  content: '';
  position: absolute;
  inset: var(--space-6) calc(-1 * var(--space-4)) calc(-1 * var(--space-4)) var(--space-6);
  background: linear-gradient(
    135deg,
    var(--color-teal-light) 0%,
    var(--color-teal-faint) 100%
  );
  border-radius: var(--radius-xl);
  z-index: 0;
}

.host__photo {
  position: relative;
  z-index: 1;
  border-radius: var(--radius-lg);
  object-fit: cover;
  width: 100%;
  aspect-ratio: 5 / 6;
  box-shadow: var(--shadow-lg);
}

.host__bio .section__label {
  margin-top: 0;
}

.host__name {
  font-size: clamp(var(--text-2xl), 4vw, var(--text-3xl));
  font-weight: var(--weight-bold);
  color: var(--color-ink);
  letter-spacing: -0.02em;
  margin-bottom: var(--space-2);
}

.host__role {
  font-size: var(--text-sm);
  font-weight: var(--weight-medium);
  letter-spacing: var(--tracking-wide);
  color: var(--color-teal);
  margin-bottom: var(--space-6);
}

.host__bio-body p {
  font-size: var(--text-base);
  line-height: var(--leading-loose);
  color: var(--color-ink-muted);
}

.host__bio-body p + p {
  margin-top: var(--space-4);
}

.host__cta {
  margin-top: var(--space-8);
}

/* ============================================================
   11. PAGE HEADER (inner pages: Episodes, FAQ, Work With Me)
   ============================================================ */
.page-header {
  background: linear-gradient(
    135deg,
    var(--color-bg) 55%,
    var(--color-teal-faint) 100%
  );
  padding-block: var(--space-16) var(--space-12);
  border-bottom: 1px solid var(--color-border);
}

.page-header__title {
  font-size: clamp(var(--text-3xl), 6vw, var(--text-5xl));
  font-weight: var(--weight-bold);
  letter-spacing: -0.03em;
  line-height: var(--leading-tight);
  color: var(--color-ink);
  margin-bottom: var(--space-4);
}

.page-header__subtitle {
  font-size: var(--text-lg);
  color: var(--color-ink-muted);
  line-height: var(--leading-loose);
  max-width: 52ch;
  margin-bottom: var(--space-4);
}

/* ============================================================
   12. FOOTER
   ============================================================ */
.site-footer {
  background-color: var(--color-ink);
  color: rgba(255, 255, 255, 0.65);
  padding-block: var(--space-12);
}

.site-footer__inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-6);
  text-align: center;
}

.footer__brand {
  display: flex;
  align-items: center;
  gap: var(--space-4);
}

.footer__tagline {
  font-size: var(--text-sm);
  line-height: var(--leading-normal);
  max-width: 40ch;
  text-align: left;
}

.footer__copy {
  font-size: var(--text-xs);
  color: rgba(255, 255, 255, 0.35);
  margin-top: var(--space-2);
}

.footer__legal {
  font-size: var(--text-xs);
  margin-top: var(--space-2);
}

.footer__legal a {
  color: var(--color-ink-muted);
  text-decoration: none;
}

.footer__legal a:hover,
.footer__legal a:focus {
  text-decoration: underline;
}

/* ============================================================
   12. RESPONSIVE BREAKPOINTS
   ============================================================ */

/* Tablet — 640px+ */
@media (min-width: 640px) {
  .pillars {
    grid-template-columns: repeat(3, 1fr);
  }

}

/* Desktop — 800px+ */
@media (min-width: 800px) {
  .hero__inner {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-16);
    align-items: center;
  }

  .hero__content {
    max-width: none;
  }

  .hero__title {
    /* Ensure the line-break looks intentional on wide screens */
    white-space: nowrap;
  }

  .host {
    grid-template-columns: 380px 1fr;
    gap: var(--space-16);
    align-items: center;
  }
}


@media (max-width: 767px) {
  /* Mobile hero adjustments */
  .hero__visual {
    order: -1; /* Photo above text on mobile */
    max-height: 320px;
    overflow: hidden;
  }

  .hero__host-image {
    max-height: 300px;
  }

  .hero__wave-ring--1 { width: 240px; height: 240px; }
  .hero__wave-ring--2 { width: 340px; height: 340px; }

  /* Host section mobile */
  .host__photo-wrap {
    max-width: 100%;
    margin-inline: auto;
  }
}

/* ============================================================
   TESTIMONIALS
   ============================================================ */
.testimonials {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-6);
  margin-top: var(--space-10);
}

.testimonial-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-8);
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  position: relative;
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--transition-base), transform var(--transition-base);
}

.testimonial-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

/* Teal accent bar at top */
.testimonial-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: var(--space-8);
  right: var(--space-8);
  height: 3px;
  background: linear-gradient(90deg, var(--color-blue), var(--color-teal));
  border-radius: 0 0 var(--radius-sm) var(--radius-sm);
}

.testimonial-card__stars {
  color: #F5A623;
  font-size: 1.1rem;
  letter-spacing: 0.15em;
  line-height: 1;
}

.testimonial-card__quote {
  margin: 0;
  flex: 1;
}

.testimonial-card__quote p {
  font-size: var(--text-base);
  line-height: var(--leading-loose);
  color: var(--color-ink-muted);
  margin: 0;
}

.testimonial-card__author {
  font-size: var(--text-sm);
  font-weight: var(--weight-medium);
  color: var(--color-ink);
  letter-spacing: 0.01em;
}

.testimonial-card__author::before {
  content: '— ';
  color: var(--color-teal);
}

@media (max-width: 900px) {
  .testimonials {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 560px) {
  .testimonials {
    grid-template-columns: 1fr;
  }
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }

  html { scroll-behavior: auto; }
}