/* ══════════════════════════════════════════════════════
   IRONFORGE GYM — style.css
   Design System: Premium Dark Gym
   ══════════════════════════════════════════════════════ */

/* ── CSS VARIABLES (design tokens) ── */
:root {
  --bg:        #0F0F0F;
  --surface:   #1C1C1C;
  --primary:   #E63946;
  --text:      #F1FAEE;
  --accent:    #A8DADC;

  /* Derived helpers */
  --text-muted:   rgba(241, 250, 238, 0.55);
  --text-dim:     rgba(241, 250, 238, 0.35);
  --surface-2:    #242424;
  --primary-dark: #c22c38;
  --border:       rgba(241, 250, 238, 0.08);

  /* Typography */
  --font-display: 'Bebas Neue', sans-serif;
  --font-cond:    'Barlow Condensed', sans-serif;
  --font-body:    'Barlow', sans-serif;

  /* Spacing */
  --section-gap: 7rem;
  --container:   1200px;
  --radius:      6px;
  --radius-lg:   14px;

  /* Transitions */
  --ease: cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

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

html { scroll-behavior: smooth; font-size: 16px; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  font-weight: 400;
  line-height: 1.65;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }
button { cursor: pointer; font-family: inherit; border: none; outline: none; }
input, select, textarea { font-family: inherit; }

/* ── CONTAINER ── */
.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* ══════════════════════════════
   BUTTONS
══════════════════════════════ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.85rem 2rem;
  font-family: var(--font-cond);
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  border-radius: var(--radius);
  transition: all 0.25s var(--ease);
  white-space: nowrap;
}

.btn-primary {
  background: var(--primary);
  color: var(--text);
  border: 2px solid var(--primary);
}
.btn-primary:hover {
  background: var(--primary-dark);
  border-color: var(--primary-dark);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(230, 57, 70, 0.35);
}

.btn-ghost {
  background: transparent;
  color: var(--text);
  border: 2px solid rgba(241, 250, 238, 0.25);
}
.btn-ghost:hover {
  border-color: var(--accent);
  color: var(--accent);
  transform: translateY(-2px);
}

.btn-outline {
  background: transparent;
  color: var(--text);
  border: 2px solid var(--border);
}
.btn-outline:hover {
  border-color: var(--primary);
  color: var(--primary);
  transform: translateY(-2px);
}

.btn-full { width: 100%; }

/* ══════════════════════════════
   SECTION HEADERS
══════════════════════════════ */
.section-label {
  font-family: var(--font-cond);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--primary);
  margin-bottom: 0.6rem;
}

.section-title {
  font-family: var(--font-display);
  font-size: clamp(2.2rem, 5vw, 3.5rem);
  line-height: 1.05;
  letter-spacing: 0.02em;
  color: var(--text);
  margin-bottom: 1rem;
}

.section-sub {
  color: var(--text-muted);
  font-size: 1.05rem;
  max-width: 520px;
}

.section-header {
  text-align: center;
  margin-bottom: 3.5rem;
}
.section-header .section-sub { margin: 0 auto; }

/* ══════════════════════════════
   NAVBAR
══════════════════════════════ */
.navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  padding: 1.1rem 0;
  transition: background 0.3s var(--ease), backdrop-filter 0.3s;
}

.navbar.scrolled {
  background: rgba(15, 15, 15, 0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}

.nav-inner {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  font-family: var(--font-display);
  font-size: 1.7rem;
  letter-spacing: 0.05em;
  color: var(--text);
  line-height: 1;
}
.nav-logo span { color: var(--primary); }

.nav-links {
  display: flex;
  align-items: center;
  gap: 2rem;
}

.nav-links a {
  font-family: var(--font-cond);
  font-weight: 700;
  font-size: 0.85rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-muted);
  transition: color 0.2s;
}
.nav-links a:hover { color: var(--text); }

.nav-cta {
  background: var(--primary) !important;
  color: var(--text) !important;
  padding: 0.5rem 1.2rem;
  border-radius: var(--radius);
}
.nav-cta:hover {
  background: var(--primary-dark) !important;
  color: var(--text) !important;
}

/* Hamburger */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  padding: 4px;
}
.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: transform 0.3s, opacity 0.3s;
}
.nav-toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity: 0; }
.nav-toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ══════════════════════════════
   HERO
══════════════════════════════ */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: 10rem 1.5rem 5rem;
  overflow: hidden;
}

/* Big decorative background text */
.hero-bg-text {
  position: absolute;
  top: 50%;
  right: -0.05em;
  transform: translateY(-50%);
  font-family: var(--font-display);
  font-size: clamp(12rem, 22vw, 22rem);
  color: rgba(230, 57, 70, 0.04);
  pointer-events: none;
  user-select: none;
  line-height: 1;
  white-space: nowrap;
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: var(--container);
  margin: 0 auto;
  width: 100%;
}

.hero-eyebrow {
  font-family: var(--font-cond);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 1.2rem;
}

.hero-headline {
  font-family: var(--font-display);
  font-size: clamp(4rem, 10vw, 9rem);
  line-height: 0.95;
  letter-spacing: 0.02em;
  margin-bottom: 1.5rem;
  animation: fadeUp 0.8s var(--ease) both;
}

.hero-highlight { color: var(--primary); }

.hero-sub {
  font-size: clamp(1rem, 2vw, 1.2rem);
  color: var(--text-muted);
  max-width: 480px;
  margin-bottom: 2.5rem;
  animation: fadeUp 0.8s 0.15s var(--ease) both;
}

.hero-actions {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  margin-bottom: 3.5rem;
  animation: fadeUp 0.8s 0.25s var(--ease) both;
}

.hero-stats {
  display: flex;
  align-items: center;
  gap: 2rem;
  flex-wrap: wrap;
  animation: fadeUp 0.8s 0.35s var(--ease) both;
}

.stat { display: flex; flex-direction: column; }
.stat-num {
  font-family: var(--font-display);
  font-size: 2.2rem;
  line-height: 1;
  color: var(--text);
}
.stat-label {
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-muted);
  font-family: var(--font-cond);
  font-weight: 600;
}

.stat-divider {
  width: 1px;
  height: 40px;
  background: var(--border);
}

/* Scroll hint */
.hero-scroll-hint {
  position: absolute;
  bottom: 2.5rem;
  right: 1.5rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.6rem;
  font-family: var(--font-cond);
  font-size: 0.7rem;
  letter-spacing: 0.18em;
  color: var(--text-dim);
  text-transform: uppercase;
}
.scroll-line {
  width: 1px;
  height: 50px;
  background: linear-gradient(to bottom, var(--text-dim), transparent);
  animation: scrollPulse 2s ease-in-out infinite;
}

/* ══════════════════════════════
   ABOUT
══════════════════════════════ */
.about {
  padding: var(--section-gap) 0;
  background: var(--surface);
}

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 4rem;
  align-items: center;
}

.about-img-wrap {
  position: relative;
}

.about-img-placeholder {
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  aspect-ratio: 4/5;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  color: var(--text-muted);
  font-size: 0.9rem;
  letter-spacing: 0.05em;
}
.img-icon { font-size: 4rem; }

.about-badge {
  position: absolute;
  bottom: -1.2rem;
  right: -1.2rem;
  background: var(--primary);
  border-radius: 50%;
  width: 90px;
  height: 90px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  line-height: 1.2;
  text-align: center;
  box-shadow: 0 8px 24px rgba(230, 57, 70, 0.4);
}
.badge-num {
  font-family: var(--font-display);
  font-size: 1.4rem;
  line-height: 1;
}
.badge-text {
  font-family: var(--font-cond);
  font-size: 0.65rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.about-text {
  color: var(--text-muted);
  margin-bottom: 1.2rem;
  font-size: 1.05rem;
}

.about-features {
  margin-top: 2rem;
  display: flex;
  flex-direction: column;
  gap: 1.2rem;
}

.feature-item {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
}
.feature-icon {
  font-size: 1.4rem;
  flex-shrink: 0;
  margin-top: 0.1rem;
}
.feature-item strong {
  display: block;
  font-family: var(--font-cond);
  font-size: 1rem;
  letter-spacing: 0.05em;
  margin-bottom: 0.15rem;
  color: var(--text);
}
.feature-item p { font-size: 0.9rem; color: var(--text-muted); }

/* ══════════════════════════════
   TRAINERS
══════════════════════════════ */
.trainers {
  padding: var(--section-gap) 0;
}

.trainers-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1.5rem;
}

.trainer-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: transform 0.3s var(--ease), box-shadow 0.3s var(--ease);
}
.trainer-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 16px 40px rgba(0,0,0,0.4);
}

.trainer-img {
  background: var(--surface-2);
  aspect-ratio: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  border-bottom: 1px solid var(--border);
}
.trainer-img--accent {
  background: linear-gradient(135deg, #1a1a1a, #1f2e2e);
  border-bottom-color: rgba(168, 218, 220, 0.1);
}
.trainer-placeholder { font-size: 4rem; }

.trainer-info { padding: 1.4rem; }
.trainer-info h3 {
  font-family: var(--font-display);
  font-size: 1.5rem;
  letter-spacing: 0.03em;
  margin-bottom: 0.2rem;
}
.trainer-title {
  color: var(--accent);
  font-family: var(--font-cond);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 0.3rem;
}
.trainer-spec {
  color: var(--text-muted);
  font-size: 0.85rem;
  margin-bottom: 0.6rem;
}
.trainer-certs {
  font-family: var(--font-cond);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--text-dim);
  text-transform: uppercase;
  border-top: 1px solid var(--border);
  padding-top: 0.6rem;
  margin-top: 0.6rem;
}

/* ══════════════════════════════
   MEMBERSHIP PLANS
══════════════════════════════ */
.membership {
  padding: var(--section-gap) 0;
  background: var(--surface);
  position: relative;
}

/* Subtle grid pattern background */
.membership::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(241,250,238,0.02) 1px, transparent 1px),
    linear-gradient(90deg, rgba(241,250,238,0.02) 1px, transparent 1px);
  background-size: 48px 48px;
  pointer-events: none;
}

.plans-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
  position: relative;
  z-index: 1;
}

.plan-card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 2rem;
  position: relative;
  transition: transform 0.3s var(--ease), box-shadow 0.3s var(--ease);
}
.plan-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 36px rgba(0,0,0,0.4);
}

/* Popular plan highlight */
.plan-card--popular {
  border-color: var(--primary);
  background: var(--surface-2);
  transform: scale(1.03);
}
.plan-card--popular:hover { transform: scale(1.03) translateY(-4px); }

.popular-badge {
  position: absolute;
  top: -1px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--primary);
  color: var(--text);
  font-family: var(--font-cond);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  padding: 0.3rem 1rem;
  border-radius: 0 0 var(--radius) var(--radius);
  white-space: nowrap;
}

.plan-header {
  margin-bottom: 1.8rem;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--border);
}
.plan-name {
  font-family: var(--font-cond);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 0.8rem;
}
.plan-card--popular .plan-name { color: var(--accent); }

.plan-price {
  display: flex;
  align-items: baseline;
  gap: 0.2rem;
  line-height: 1;
}
.plan-currency {
  font-family: var(--font-cond);
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-muted);
  margin-top: 0.4rem;
}
.plan-amount {
  font-family: var(--font-display);
  font-size: 3rem;
  letter-spacing: 0.02em;
  color: var(--text);
}
.plan-duration {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-top: 0.3rem;
}

.plan-features {
  display: flex;
  flex-direction: column;
  gap: 0.7rem;
  margin-bottom: 2rem;
  font-size: 0.92rem;
  color: var(--text-muted);
}
.plan-features li.disabled {
  color: var(--text-dim);
  text-decoration: line-through;
  text-decoration-color: var(--text-dim);
}

.plan-btn { width: 100%; }

/* ══════════════════════════════
   GALLERY
══════════════════════════════ */
.gallery {
  padding: var(--section-gap) 0;
}

.gallery-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  grid-template-rows: repeat(2, 220px);
  gap: 8px;
  margin-top: 0;
  padding: 0 1.5rem;
  max-width: calc(var(--container) + 3rem);
  margin: 0 auto;
}

.gallery-item { overflow: hidden; border-radius: var(--radius); }
.gallery-item--lg {
  grid-column: span 2;
  grid-row: span 2;
}
.gallery-item--wide { grid-column: span 2; }

.gallery-placeholder {
  width: 100%;
  height: 100%;
  background: var(--surface);
  border: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  color: var(--text-muted);
  font-size: 0.8rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  font-family: var(--font-cond);
  font-weight: 600;
  transition: background 0.3s;
}
.gallery-placeholder:hover { background: var(--surface-2); }
.gallery-icon { font-size: 2rem; }

/* ══════════════════════════════
   CONTACT
══════════════════════════════ */
.contact {
  padding: var(--section-gap) 0;
  background: var(--surface);
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}

.contact-details {
  margin-top: 2rem;
  display: flex;
  flex-direction: column;
  gap: 1.4rem;
}

.contact-item {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
}
.contact-icon { font-size: 1.3rem; flex-shrink: 0; margin-top: 0.1rem; }
.contact-item strong { display: block; font-family: var(--font-cond); font-size: 0.85rem; font-weight: 700; letter-spacing: 0.1em; text-transform: uppercase; color: var(--text-muted); margin-bottom: 0.2rem; }
.contact-item p { color: var(--text); font-size: 1rem; }

.contact-map {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  aspect-ratio: 4/3;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  color: var(--text-muted);
  font-size: 1rem;
}
.map-placeholder { text-align: center; }

/* ══════════════════════════════
   FOOTER
══════════════════════════════ */
.footer {
  background: #080808;
  border-top: 1px solid var(--border);
  padding: 3rem 0 2rem;
}

.footer-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
  flex-wrap: wrap;
  padding-bottom: 2rem;
  border-bottom: 1px solid var(--border);
  margin-bottom: 1.5rem;
}

.footer-logo { font-size: 1.5rem; }

.footer-links {
  display: flex;
  gap: 2rem;
  flex-wrap: wrap;
}
.footer-links a {
  font-family: var(--font-cond);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-muted);
  transition: color 0.2s;
}
.footer-links a:hover { color: var(--text); }

.footer-social {
  display: flex;
  gap: 0.8rem;
}
.footer-social a {
  font-family: var(--font-cond);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--text-muted);
  background: var(--surface);
  border: 1px solid var(--border);
  padding: 0.35rem 0.7rem;
  border-radius: var(--radius);
  transition: border-color 0.2s, color 0.2s;
}
.footer-social a:hover { border-color: var(--accent); color: var(--accent); }

.footer-bottom {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.5rem;
  font-size: 0.8rem;
  color: var(--text-dim);
}

/* ══════════════════════════════
   MODAL
══════════════════════════════ */
/* Dark overlay */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.80);
  backdrop-filter: blur(6px);
  z-index: 2000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s var(--ease);
}

/* Active state — toggled by JS */
.modal-overlay.active {
  opacity: 1;
  pointer-events: all;
}

/* Modal box */
.modal {
  background: var(--surface);
  border: 1px solid rgba(241, 250, 238, 0.1);
  border-radius: var(--radius-lg);
  padding: 2.5rem;
  max-width: 520px;
  width: 100%;
  position: relative;
  max-height: 90vh;
  overflow-y: auto;
  transform: translateY(24px) scale(0.97);
  transition: transform 0.35s var(--ease);
  scrollbar-width: thin;
  scrollbar-color: var(--border) transparent;
}

.modal-overlay.active .modal {
  transform: translateY(0) scale(1);
}

/* Close button */
.modal-close {
  position: absolute;
  top: 1.2rem;
  right: 1.2rem;
  background: var(--surface-2);
  border: 1px solid var(--border);
  color: var(--text-muted);
  width: 32px;
  height: 32px;
  border-radius: 50%;
  font-size: 0.85rem;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.2s, color 0.2s;
}
.modal-close:hover { background: var(--primary); color: var(--text); }

.modal-header {
  margin-bottom: 2rem;
}
.modal-header h2 {
  font-family: var(--font-display);
  font-size: 2rem;
  letter-spacing: 0.03em;
  margin-bottom: 0.5rem;
}
.modal-sub { color: var(--text-muted); font-size: 0.9rem; }

/* Form */
.modal-form {
  display: flex;
  flex-direction: column;
  gap: 1.2rem;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.form-group label {
  font-family: var(--font-cond);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-muted);
}

.required { color: var(--primary); }
.optional { color: var(--text-dim); font-size: 0.85em; }

.form-group input,
.form-group select,
.form-group textarea {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 0.75rem 1rem;
  color: var(--text);
  font-size: 0.95rem;
  width: 100%;
  transition: border-color 0.2s, box-shadow 0.2s;
  appearance: none;
  -webkit-appearance: none;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(168, 218, 220, 0.12);
}

/* Validation error state */
.form-group.has-error input,
.form-group.has-error select,
.form-group.has-error textarea {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(230, 57, 70, 0.12);
}

.field-error {
  font-size: 0.78rem;
  color: var(--primary);
  display: none;
}
.form-group.has-error .field-error { display: block; }

/* Select arrow */
.form-group select {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath fill='%23A8DADC' d='M6 8L0 0h12z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 1rem center;
  padding-right: 2.5rem;
  cursor: pointer;
}
.form-group select option { background: var(--surface-2); }

/* Read-only auto-filled field */
.readonly-field {
  background: var(--surface-2) !important;
  border-color: rgba(168, 218, 220, 0.15) !important;
  color: var(--accent) !important;
  cursor: default;
  font-family: var(--font-cond) !important;
  font-weight: 600 !important;
  letter-spacing: 0.05em;
}

.modal-note {
  font-size: 0.78rem;
  color: var(--text-dim);
  text-align: center;
  margin-top: -0.4rem;
}

/* ══════════════════════════════
   ANIMATIONS
══════════════════════════════ */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(20px); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes scrollPulse {
  0%, 100% { opacity: 0.4; transform: scaleY(1); }
  50%       { opacity: 1; transform: scaleY(1.08); }
}

/* Intersection observer fade-in */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.7s var(--ease), transform 0.7s var(--ease);
}
.reveal.visible {
  opacity: 1;
  transform: none;
}
.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }

/* ══════════════════════════════
   RESPONSIVE
══════════════════════════════ */
@media (max-width: 900px) {
  .about-grid,
  .contact-grid { grid-template-columns: 1fr; }

  .about-visual { max-width: 400px; margin: 0 auto; }
  .about-img-placeholder { aspect-ratio: 3/2; }

  .plan-card--popular { transform: none; }
  .plan-card--popular:hover { transform: translateY(-4px); }

  .gallery-grid {
    grid-template-columns: repeat(2, 1fr);
    grid-template-rows: auto;
  }
  .gallery-item--lg { grid-column: span 2; aspect-ratio: 16/9; }
  .gallery-item { height: 180px; }
}

@media (max-width: 768px) {
  :root { --section-gap: 5rem; }

  /* Nav mobile */
  .nav-toggle { display: flex; }

  .nav-links {
    position: fixed;
    top: 0; right: 0; bottom: 0;
    width: min(300px, 85vw);
    background: var(--surface);
    border-left: 1px solid var(--border);
    flex-direction: column;
    align-items: flex-start;
    padding: 5rem 2rem 2rem;
    gap: 1.5rem;
    transform: translateX(100%);
    transition: transform 0.35s var(--ease);
    z-index: 999;
  }
  .nav-links.open { transform: translateX(0); }
  .nav-links a { font-size: 1.1rem; }
  .nav-cta { padding: 0.7rem 1.4rem !important; }

  .hero { padding: 8rem 1.5rem 4rem; }
  .hero-headline { font-size: clamp(3rem, 14vw, 6rem); }

  .trainers-grid { grid-template-columns: 1fr 1fr; }

  .footer-top { flex-direction: column; align-items: flex-start; }
  .footer-bottom { flex-direction: column; }

  .modal { padding: 2rem 1.5rem; }
}

@media (max-width: 500px) {
  .trainers-grid { grid-template-columns: 1fr; }
  .hero-actions { flex-direction: column; }
  .hero-actions .btn { width: 100%; text-align: center; }
  .gallery-grid { grid-template-columns: 1fr; }
  .gallery-item, .gallery-item--lg, .gallery-item--wide { grid-column: span 1; height: 160px; }
  .plans-grid { grid-template-columns: 1fr; }
  .hero-stats { gap: 1.2rem; }
}