/* ============================================
   LAUNCH VALLEY TUTORING — styles.css
   ============================================ */

/* --- CSS Variables --- */
:root {
  --navy:       #0D1B2A;
  --navy-mid:   #142030;
  --navy-light: #1e2f45;
  --gold:       #BFA068;
  --gold-light: #D4B887;
  --white:      #F9F8F6;
  --text-muted: rgba(249, 248, 246, 0.60);
  --text-dim:   rgba(249, 248, 246, 0.40);
  --on-gold:    #0D1B2A;

  --font-heading: 'Playfair Display', Georgia, serif;
  --font-body:    'Inter', system-ui, sans-serif;

  --section-pad: clamp(5rem, 10vw, 9rem);
  --container:   1200px;
  --radius:      4px;

  --transition: 0.3s ease;
}

/* --- Light Mode Variables --- */
[data-theme="light"] {
  --navy:       #f5f3ee;
  --navy-mid:   #ece9e1;
  --navy-light: #e2ddd4;
  --gold:       #8B6914;
  --gold-light: #A07820;
  --white:      #1a1a2e;
  --text-muted: rgba(26, 26, 46, 0.60);
  --text-dim:   rgba(26, 26, 46, 0.38);
  --on-gold:    #f5f3ee;
}

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

html {
  scroll-behavior: smooth;
}

body {
  background-color: var(--navy);
  color: var(--white);
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

img, video { display: block; max-width: 100%; }
a { text-decoration: none; color: inherit; }
ul { list-style: none; }
button { cursor: pointer; border: none; background: none; font: inherit; }


/* ============================================
   BUTTONS
============================================ */

.btn {
  display: inline-block;
  padding: 0.85rem 2.2rem;
  font-family: var(--font-body);
  font-size: 0.85rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  border-radius: var(--radius);
  transition: background-color var(--transition), color var(--transition), border-color var(--transition);
}

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

.btn-outline:hover {
  background: var(--gold);
  color: var(--on-gold);
}

.btn-gold {
  background: var(--gold);
  color: var(--on-gold);
  border: 1px solid var(--gold);
}

.btn-gold:hover {
  background: var(--gold-light);
  border-color: var(--gold-light);
}


/* ============================================
   TYPOGRAPHY HELPERS
============================================ */

.section-eyebrow {
  font-family: var(--font-body);
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 1rem;
}


/* ============================================
   NAVIGATION
============================================ */

.nav {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 100;
  transition: background-color var(--transition), box-shadow var(--transition), backdrop-filter var(--transition);
  background: rgba(13, 27, 42, 0.55);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow: 0 1px 0 rgba(191, 160, 104, 0.12);
}

.nav.scrolled {
  background: rgba(13, 27, 42, 0.85);
  box-shadow: 0 1px 0 rgba(191, 160, 104, 0.15);
}

.nav-inner {
  max-width: var(--container);
  margin: 0 auto;
  padding: 1.4rem 2rem;
  display: flex;
  align-items: center;
  gap: 2rem;
}

.nav-logo {
  font-family: var(--font-heading);
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--white);
  letter-spacing: 0.01em;
  flex-shrink: 0;
  margin-right: auto;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 2.4rem;
}

.nav-link {
  font-size: 0.82rem;
  font-weight: 400;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-muted);
  transition: color var(--transition);
}

.nav-link:hover {
  color: var(--white);
}

.nav-cta {
  font-size: 0.78rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  padding: 0.6rem 1.5rem;
  border: 1px solid var(--gold);
  color: var(--gold);
  border-radius: var(--radius);
  transition: background-color var(--transition), color var(--transition);
}

.nav-cta:hover {
  background: var(--gold);
  color: var(--on-gold);
}

/* Hamburger */
.nav-hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 4px;
}

.nav-hamburger span {
  display: block;
  width: 24px;
  height: 1.5px;
  background: var(--white);
  transition: transform var(--transition), opacity var(--transition);
}

.nav-hamburger.open span:nth-child(1) { transform: translateY(6.5px) rotate(45deg); }
.nav-hamburger.open span:nth-child(2) { opacity: 0; }
.nav-hamburger.open span:nth-child(3) { transform: translateY(-6.5px) rotate(-45deg); }

/* Always-visible nav items (theme btn + Get Started) */
.nav-persistent {
  display: flex;
  align-items: center;
  gap: 1rem;
  flex-shrink: 0;
}

.theme-btn {
  font-size: 0.78rem;
  font-weight: 400;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 0.6rem 1.5rem;
  border: 1px solid var(--text-muted);
  color: var(--text-muted);
  border-radius: var(--radius);
  background: transparent;
  cursor: pointer;
  transition: color var(--transition), border-color var(--transition);
}

.theme-btn:hover {
  color: var(--white);
  border-color: var(--white);
}

.theme-btn.flash {
  animation: themeBtnFlash 0.35s ease forwards;
}

@keyframes themeBtnFlash {
  0%   { transform: scale(1);    background: transparent; }
  35%  { transform: scale(0.93); background: rgba(249, 248, 246, 0.1); }
  100% { transform: scale(1);    background: transparent; }
}


/* ============================================
   SECTION 1 — HERO
============================================ */

.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    to bottom,
    rgba(6, 14, 26, 0.2) 0%,
    rgba(6, 14, 26, 0.5) 60%,
    rgba(6, 14, 26, 0.8) 100%
  );
  pointer-events: none;
}

.hero-content {
  position: relative;
  z-index: 1;
  text-align: center;
  padding: 2rem;
  animation: heroFadeIn 1.2s ease forwards;
  opacity: 0;
}

@keyframes heroFadeIn {
  from { opacity: 0; transform: translateY(18px); }
  to   { opacity: 1; transform: translateY(0); }
}

.hero-eyebrow {
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.26em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 1.6rem;

}

.hero-heading {
  font-family: var(--font-heading);
  font-size: clamp(3rem, 8vw, 6.5rem);
  font-weight: 600;
  line-height: 1.08;
  color: var(--white);
  margin-bottom: 2.4rem;
  letter-spacing: -0.01em;
}

/* Thin gold line separator */
.hero-heading::after {
  content: '';
  display: block;
  width: 60px;
  height: 1px;
  background: var(--gold);
  margin: 1.6rem auto 0;
  opacity: 0.7;
}


/* ============================================
   SECTION 2 — VALUE PROP
============================================ */

.value {
  position: relative;
  padding: 0 clamp(1rem, 4vw, 3rem);
}

/* Full-width scene container — framed with border-radius so background shows */
.value-scene {
  position: relative;
  width: 100%;
  height: 100vh;
  overflow: hidden;
  border-radius: 12px;
}

.value-scene > img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

/* ---- Hover panels (1/3 each) ---- */

.value-panels {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  z-index: 3;
}

.value-panel {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem 2rem;
  background: rgba(6, 14, 26, 0.25);
  border-bottom: 1px solid rgba(191, 160, 104, 0.45);
  cursor: pointer;
  transition: flex 0.45s cubic-bezier(0.4, 0, 0.2, 1), background 0.45s ease;
}

.value-panel:last-child {
  border-bottom: none;
}

/* When any panel is hovered, shrink the non-hovered siblings */
.value-panels:has(.value-panel:hover) .value-panel {
  flex: 0.55;
}

.value-panels:has(.value-panel:hover) .value-panel:hover {
  flex: 1.9;
  background: rgba(6, 14, 26, 0.55);
}

.panel-content {
  text-align: center;
  color: var(--white);
  width: 100%;
}

.panel-title {
  font-family: var(--font-heading);
  font-size: clamp(2rem, 4vw, 3.2rem);
  font-weight: 600;
  letter-spacing: 0.03em;
  text-shadow: 0 1px 10px rgba(0,0,0,0.9), 0 2px 20px rgba(0,0,0,0.7);
  transition: margin-bottom 0.35s ease;
}

.panel-tap-hint {
  display: none;
}

.panel-desc {
  overflow: hidden;
  max-height: 0;
  opacity: 0;
  transition: max-height 0.45s ease, opacity 0.35s ease 0.1s;
  margin-top: 0.75rem;
}

.value-panel:hover .panel-desc {
  max-height: 200px;
  opacity: 1;
}

.panel-desc p {
  font-size: 1.25rem;
  color: rgba(255, 255, 255, 0.85);
  line-height: 1.55;
  text-shadow: 0 1px 6px rgba(0,0,0,0.8);
  max-width: 600px;
  margin: 0 auto;
}


/* ============================================
   SECTION 3 — TESTIMONIALS
============================================ */

.testimonials {
  background-color: var(--navy);
  padding: 0;
  overflow: hidden;
}

.value-intro {
  background-color: var(--navy);
  text-align: center;
  padding: clamp(4rem, 8vh, 7rem) 2rem;
}

.testimonials-intro {
  background-color: var(--navy);
  text-align: center;
  padding: clamp(4rem, 8vh, 7rem) 2rem;
}

.testimonials-heading {
  font-family: var(--font-heading);
  font-size: clamp(2rem, 4vw, 2.8rem);
  font-weight: 600;
  line-height: 1.2;
  color: var(--white);
  letter-spacing: -0.01em;
}

/* Proof Grid — 4 col × 3 row */
.proof-scroller {
  width: 100%;
  padding: 0 clamp(1rem, 4vw, 3rem) 2rem;
}

.proof-track {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0.75rem;
}

.proof-item {
  position: relative;
  aspect-ratio: 3 / 4;
  cursor: pointer;
  display: block;
  font-size: 0;
  perspective: 1000px;
}

.proof-inner {
  position: relative;
  width: 100%;
  height: 100%;
  -webkit-transform-style: preserve-3d;
  transform-style: preserve-3d;
  transition: transform 0.6s ease;
  will-change: transform;
}

.proof-item.flipped .proof-inner {
  transform: rotateY(180deg);
}

.proof-front,
.proof-back {
  position: absolute;
  inset: 0;
  -webkit-backface-visibility: hidden;
  backface-visibility: hidden;
  overflow: hidden;
}

.proof-front {
  transform: rotateY(0deg);
}

.proof-back {
  transform: rotateY(180deg);
  background: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
}

.proof-back img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  display: block;
}

.proof-section-heading {
  position: absolute;
  top: clamp(2.5rem, 6vh, 5rem);
  left: 50%;
  transform: translateX(-50%);
  width: 100%;
  text-align: center;
  font-family: var(--font-heading);
  font-size: clamp(2.5rem, 6vw, 5rem);
  font-weight: 600;
  line-height: 1.15;
  color: var(--white);
  letter-spacing: -0.01em;
  text-shadow: 0 2px 20px rgba(0,0,0,0.6), 0 1px 4px rgba(0,0,0,0.5);
  z-index: 2;
  pointer-events: none;
}

.proof-front img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.6s ease;
}

.proof-item:not(.flipped):hover .proof-front img {
  transform: scale(1.03);
}

/* Overlay — hidden, fades in on hover */
.proof-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    to top,
    rgba(6, 14, 26, 0.88) 0%,
    rgba(6, 14, 26, 0.45) 45%,
    rgba(6, 14, 26, 0.05) 100%
  );
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 1rem;
  opacity: 0;
  transition: opacity 0.4s ease;
}

.proof-item:not(.flipped):hover .proof-overlay {
  opacity: 1;
}

.proof-quote {
  font-family: var(--font-heading);
  font-size: clamp(1rem, 1.6vw, 1.4rem);
  font-style: italic;
  font-weight: 400;
  color: var(--white);
  line-height: 1.4;
  margin-bottom: 0.5rem;
  transform: translateY(6px);
  transition: transform 0.4s ease;
}

.proof-item:not(.flipped):hover .proof-quote {
  transform: translateY(0);
}

.proof-name {
  font-size: 0.6rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 0.4rem;
}

.proof-badges {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 0.25rem;
}

.proof-result,
.proof-college {
  display: inline-block;
  font-size: 0.6rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--on-gold);
  background: var(--gold);
  padding: 0.2rem 0.5rem;
  border-radius: 2px;
}


/* ============================================
   SCROLL REVEAL
============================================ */

.reveal {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

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

/* Testimonial card stagger */
.proof-item {
  transition: opacity 0.5s ease var(--reveal-delay, 0ms),
              transform 0.5s ease var(--reveal-delay, 0ms);
}

.proof-item.card-hidden {
  opacity: 0;
  transform: translateY(24px);
}


/* ============================================
   FOOTER
============================================ */

.footer {
  background-color: var(--navy);
  border-top: 1px solid rgba(191, 160, 104, 0.15);
}

/* Brand + contact info block */
.footer-brand {
  padding: 3.5rem 2rem;
  text-align: center;
  border-bottom: 1px solid rgba(191, 160, 104, 0.15);
}

.footer-logo {
  font-family: var(--font-heading);
  font-size: clamp(1.4rem, 2.5vw, 1.9rem);
  font-weight: 600;
  color: var(--white);
  letter-spacing: 0.01em;
  margin-bottom: 1.25rem;
}

.footer-contact {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.4rem;
}

.footer-contact-item {
  font-size: 0.88rem;
  color: var(--text-muted);
  letter-spacing: 0.03em;
  text-decoration: none;
  transition: color var(--transition);
}

a.footer-contact-item:hover {
  color: var(--gold);
}

/* Expandable nav rows */
.footer-nav {
  display: flex;
  flex-direction: column;
}

.footer-nav-link {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0.75rem 2rem;
  font-family: var(--font-heading);
  font-size: clamp(0.9rem, 1.6vw, 1.2rem);
  font-weight: 600;
  color: var(--text-muted);
  text-decoration: none;
  border-bottom: 1px solid rgba(191, 160, 104, 0.2);
  background: transparent;
  transition: padding 0.4s cubic-bezier(0.4, 0, 0.2, 1),
              background 0.3s ease,
              color 0.3s ease;
}

.footer-nav-link:last-child {
  border-bottom: none;
}

.footer-nav-link:hover {
  padding: 1.4rem 2rem;
  background: rgba(191, 160, 104, 0.05);
  color: var(--white);
}

.footer-copy {
  padding: 1.75rem 2rem;
  text-align: center;
  font-size: 0.75rem;
  color: var(--text-dim);
  letter-spacing: 0.03em;
  border-top: 1px solid rgba(191, 160, 104, 0.1);
}


/* ============================================
   NAV — 2-ROW BREAKPOINT
============================================ */

@media (max-width: 850px) {
  .nav-hamburger {
    display: none;
  }

  .nav-logo {
    display: none;
  }

  .nav-link:nth-child(3) {
    display: none;
  }

  .nav-inner {
    justify-content: center;
    gap: 1.5rem;
  }

  .nav-links {
    gap: 1.5rem;
  }
}

@media (max-width: 500px) {
  .nav-inner {
    gap: 0.75rem;
    padding: 1.4rem 1rem;
  }

  .nav-links {
    gap: 0.75rem;
  }

  .nav-persistent {
    gap: 0.5rem;
  }

  .nav-link {
    font-size: 0.75rem;
  }

  .theme-btn,
  .nav-cta {
    font-size: 0.7rem;
    padding: 0.5rem 0.85rem;
  }
}


/* ============================================
   RESPONSIVE — TABLET & MOBILE
============================================ */

#get-started {
  padding-top: clamp(1.5rem, 3vw, 2.5rem);
}

@media (max-width: 900px) {
  .proof-track {
    grid-template-columns: repeat(2, 1fr); /* 2 col × 4 row */
  }

  .proof-item:nth-child(n+7) {
    display: none;
  }

  #get-started {
    padding-top: clamp(2.5rem, 5vw, 4rem);
  }

  /* Value scene: shorter on tablet */
  .value-scene {
    height: 75vh;
  }

  .panel-title {
    font-size: 1.3rem;
  }
}

@media (max-width: 700px) {
  .proof-track {
    grid-template-columns: repeat(2, 1fr);
  }

  /* Always show overlay on mobile (no hover) */
  .proof-item:not(.flipped) .proof-overlay {
    opacity: 1;
  }

  .proof-item:not(.flipped) .proof-quote {
    transform: translateY(0);
  }

  /* Hero */
  .hero-heading::after {
    margin-top: 1.2rem;
  }

  /* Value */
  .value {
    padding: 0 0.75rem 0.75rem;
  }

  .value-scene {
    height: 80vh;
  }

  .value-panels:has(.value-panel:hover) .value-panel {
    flex: 0.65;
  }

  .value-panels:has(.value-panel:hover) .value-panel:hover {
    flex: 1.7;
  }

  .panel-title {
    font-size: 1.1rem;
  }

  .panel-tap-hint {
    display: block;
    font-size: 0.65rem;
    font-weight: 500;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: rgba(255, 255, 255, 0.5);
    margin-top: 0.4rem;
    transition: opacity 0.3s ease;
  }

  .value-panel:hover .panel-tap-hint {
    opacity: 0;
  }

  .panel-desc p {
    font-size: 0.95rem;
  }

  .value-inner {
    gap: 2.5rem;
  }

}

@media (max-width: 400px) {
  .hero-eyebrow {
    letter-spacing: 0.16em;
    font-size: 0.67rem;
  }

  .btn {
    padding: 0.8rem 1.8rem;
  }
}


/* ============================================
   LIGHT MODE — pin video/photo text to dark-mode values
============================================ */

[data-theme="light"] .nav {
  background: rgba(245, 243, 238, 0.55);
}

[data-theme="light"] .nav.scrolled {
  background: rgba(245, 243, 238, 0.85);
}

[data-theme="light"] .hero-eyebrow {
  color: #BFA068;
}

[data-theme="light"] .hero-heading {
  color: #F9F8F6;
}

[data-theme="light"] .btn-outline {
  color: #F9F8F6;
  border-color: #BFA068;
}

[data-theme="light"] .btn-outline:hover {
  background: #BFA068;
  color: #0D1B2A;
}

[data-theme="light"] .proof-quote {
  color: #F9F8F6;
}

[data-theme="light"] .proof-name {
  color: rgba(249, 248, 246, 0.60);
}

[data-theme="light"] .proof-result,
[data-theme="light"] .proof-college {
  background: #BFA068;
  color: #0D1B2A;
}

/* Footer dividers use darker gold in light mode (matching Get Started border) */
[data-theme="light"] .footer {
  border-top-color: rgba(139, 105, 20, 0.35);
}

[data-theme="light"] .footer-brand {
  border-bottom-color: rgba(139, 105, 20, 0.35);
}

[data-theme="light"] .footer-nav-link {
  border-bottom-color: rgba(139, 105, 20, 0.3);
}

[data-theme="light"] .footer-copy {
  border-top-color: rgba(139, 105, 20, 0.25);
}

/* Pin panel UI on the photo to dark-mode values regardless of theme */
[data-theme="light"] .panel-content {
  color: #F9F8F6;
}