/* ═══════════════════════════════════════════════════
   ALP TOTAL PRESS — Master Landing Page Stylesheet
   ─────────────────────────────────────────────────
   Implements the 9-section Single-Product narrative
   matching ALP-Landing-Design-Spec.md & Atlas Design:
   • Alternating Background Rhythm: A → A → B → B → A → B → A → B → A → B
   • Tone A: #0D0D0D | Tone B: #141414 | Card: #181818
   • Official Brand Red: #8A1F1F
   • Desktop 1920px Full-Bleed Grid + Mobile-First Touch Optimization
   • Zero-Jank 120 FPS Scrolling & Hardware Acceleration
   ═══════════════════════════════════════════════════ */

/* ── 0. RESET & BASE ─────────────────────────────── */
html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--alp-header-height, 90px);
}

body {
  background-color: var(--alp-bg-base, #0D0D0D);
  color: var(--alp-text-primary, #FFFFFF);
  font-family: var(--alp-font, 'Vazirmatn', sans-serif);
  margin: 0;
  padding: 0;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Base Layout Container */
.alp-container {
  width: min(var(--alp-container-max, 1772px), calc(100% - (var(--alp-container-margin-x, 74px) * 2)));
  margin-inline: auto;
  position: relative;
}

/* Alternating Background Sections */
.section-tone-a {
  background-color: var(--alp-bg-base, #0D0D0D);
  border-bottom: 1px solid var(--alp-border-card, rgba(255,255,255,0.05));
}

.section-tone-b {
  background-color: var(--alp-bg-alt, #141414);
  border-bottom: 1px solid var(--alp-border-card, rgba(255,255,255,0.05));
}

.landing-section {
  padding-block: clamp(50px, 5.5vw, 100px);
  position: relative;
  contain: paint;
}

/* Section Headers */
.section-header-center {
  text-align: center;
  max-width: 860px;
  margin: 0 auto clamp(36px, 4vw, 56px);
}

.section-header-right {
  text-align: right;
  max-width: 780px;
  margin-bottom: clamp(28px, 3vw, 44px);
}

.section-eyebrow {
  display: inline-block;
  font-size: var(--alp-fs-label, 0.85rem);
  font-weight: var(--alp-fw-bold, 700);
  color: var(--alp-brand-red, #8A1F1F);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  margin-bottom: 12px;
}

.section-title {
  margin: 0 0 16px;
  font-size: var(--alp-fs-h2, 2.3rem);
  font-weight: var(--alp-fw-black, 900);
  color: var(--alp-text-primary, #FFFFFF);
  line-height: 1.25;
}

.section-desc {
  margin: 0;
  font-size: var(--alp-fs-body-lg, 1.05rem);
  color: var(--alp-text-secondary, #909090);
  line-height: 1.85;
}

/* ── 1. SITE HEADER (Chrome) ─────────────────────── */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: clamp(68px, 6.5vw, 92px);
  background: rgba(13, 13, 13, 0.92);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  z-index: 1000;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  transition: background var(--alp-duration-base) var(--alp-ease-default);
}

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

/* Logo Block */
.alp-logo-block {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  color: #fff;
}

.alp-logo-img {
  height: clamp(34px, 3.8vw, 42px);
  width: auto;
  object-fit: contain;
  display: block;
}

.about-logo-img {
  height: clamp(75px, 8vw, 110px);
  width: auto;
  object-fit: contain;
  display: block;
  margin-bottom: 8px;
}

.alp-logo-sub {
  font-size: 0.6rem;
  letter-spacing: 0.24em;
  color: var(--alp-text-secondary, #909090);
  margin-top: 3px;
  text-transform: uppercase;
}

/* Main Navigation */
.main-nav {
  display: flex;
  align-items: center;
  gap: clamp(10px, 1.2vw, 22px);
  flex-wrap: nowrap;
  white-space: nowrap;
}

.main-nav a {
  text-decoration: none;
  color: var(--alp-text-primary, #FFFFFF);
  font-size: clamp(0.82rem, 0.92vw, 0.88rem);
  font-weight: var(--alp-fw-medium, 500);
  transition: color var(--alp-duration-fast) ease;
  position: relative;
  padding-block: 4px;
  white-space: nowrap;
}

.main-nav a:hover,
.main-nav a.active {
  color: var(--alp-brand-red, #8A1F1F);
}

.main-nav a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--alp-brand-red, #8A1F1F);
  transition: width var(--alp-duration-fast) ease;
}

.main-nav a:hover::after,
.main-nav a.active::after {
  width: 100%;
}

/* Header Actions */
.header-actions {
  display: flex;
  align-items: center;
  gap: 14px;
}

.btn-header-cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 22px;
  background: var(--alp-brand-red-gradient, linear-gradient(180deg, #932A26 0%, #8A1F1F 100%));
  color: #FFFFFF;
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: var(--alp-fw-bold, 700);
  border-radius: var(--alp-radius-btn, 8px);
  box-shadow: 0 4px 18px rgba(138, 31, 31, 0.35);
  transition: transform var(--alp-duration-fast) ease, box-shadow var(--alp-duration-fast) ease;
}

.btn-header-cta:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 24px rgba(138, 31, 31, 0.55);
}

/* Mobile Nav Toggle */
.nav-toggle {
  display: none;
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--alp-border-card);
  border-radius: 8px;
  width: 44px;
  height: 44px;
  cursor: pointer;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
}

.nav-toggle span {
  display: block;
  width: 20px;
  height: 2px;
  background: #fff;
  border-radius: 1px;
}

/* ── 2. HERO SECTION ─────────────────────────────── */
.home-hero {
  position: relative;
  min-height: 100vh;
  padding-top: clamp(80px, 9vw, 110px);
  display: flex;
  align-items: center;
  overflow: hidden;
  background: var(--alp-bg-base, #0D0D0D);
}

.home-hero__stage {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 1;
  pointer-events: auto;
}

.home-hero__viewer {
  width: 100%;
  height: 100%;
}

.home-hero__grid {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: minmax(340px, 620px) 1fr;
  gap: 32px;
  align-items: center;
  pointer-events: none;
}

.home-hero__content {
  text-align: right;
  pointer-events: auto;
  padding-block: 40px;
}

.home-hero__eyebrow {
  display: inline-block;
  color: var(--alp-brand-red, #8A1F1F);
  font-size: var(--alp-fs-eyebrow, 1.1rem);
  font-weight: var(--alp-fw-bold, 700);
  margin-bottom: 12px;
}

.home-hero__title {
  margin: 0 0 18px;
  font-size: var(--alp-fs-h1, 4rem);
  font-weight: var(--alp-fw-black, 900);
  color: var(--alp-text-primary, #FFFFFF);
  line-height: 1.12;
  letter-spacing: -0.01em;
}

.home-hero__desc {
  margin: 0 0 32px;
  font-size: var(--alp-fs-body-lg, 1.12rem);
  color: var(--alp-text-secondary, #909090);
  line-height: 1.85;
  max-width: 520px;
}

.home-hero__actions {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 36px;
}

/* Primary Button */
.btn-primary-hero {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 200px;
  height: 54px;
  padding-inline: 26px;
  background: var(--alp-brand-red-gradient, linear-gradient(180deg, #932A26 0%, #8A1F1F 100%));
  color: #fff;
  text-decoration: none;
  font-size: 1rem;
  font-weight: var(--alp-fw-bold, 700);
  border-radius: var(--alp-radius-btn, 8px);
  box-shadow: 0 8px 26px rgba(138, 31, 31, 0.45);
  border: 1px solid rgba(255, 255, 255, 0.12);
  cursor: pointer;
  transition: transform var(--alp-duration-fast) ease, box-shadow var(--alp-duration-fast) ease;
}

.btn-primary-hero:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 32px rgba(138, 31, 31, 0.65);
}

/* Secondary Button */
.btn-secondary-hero {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  min-width: 200px;
  height: 54px;
  padding-inline: 24px;
  background: rgba(255, 255, 255, 0.04);
  color: #FFFFFF;
  text-decoration: none;
  font-size: 1rem;
  font-weight: var(--alp-fw-semibold, 600);
  border-radius: var(--alp-radius-btn, 8px);
  border: 1px solid rgba(255, 255, 255, 0.2);
  cursor: pointer;
  transition: background var(--alp-duration-fast) ease, border-color var(--alp-duration-fast) ease;
}

.btn-secondary-hero:hover {
  background: rgba(255, 255, 255, 0.09);
  border-color: rgba(255, 255, 255, 0.45);
}

/* Live 3D Color Picker Strip in Hero */
.hero-3d-controls {
  background: rgba(20, 20, 20, 0.88);
  border: 1px solid rgba(255, 255, 255, 0.09);
  border-radius: var(--alp-radius-card, 12px);
  padding: 16px 20px;
  backdrop-filter: blur(12px);
  display: inline-flex;
  flex-direction: column;
  gap: 12px;
  max-width: 380px;
}

.h3d-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.84rem;
  color: var(--alp-text-secondary, #909090);
}

.h3d-swatches {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.h3d-btn {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  border: 2px solid transparent;
  cursor: pointer;
  padding: 0;
  transition: transform var(--alp-duration-fast) ease, border-color var(--alp-duration-fast) ease;
  position: relative;
}

.h3d-btn.active {
  border-color: #fff;
  transform: scale(1.18);
  box-shadow: 0 0 12px rgba(255, 255, 255, 0.35);
}

.h3d-btn[data-colorkey="MATTE_BLACK"]  { background: #222222; }
.h3d-btn[data-colorkey="CHERRY_RED"]   { background: #8A1F1F; }
.h3d-btn[data-colorkey="WHITE"]        { background: #f5f5f5; }
.h3d-btn[data-colorkey="GLOSSY_BLACK"] { background: #111111; }
.h3d-btn[data-colorkey="STEEL_GREY"]   { background: #9e9e9e; }
.h3d-btn[data-colorkey="PRO"]          { background: linear-gradient(135deg, #222222 50%, #8A1F1F 50%); }

/* Scroll Indicator */
.hero-scroll-indicator {
  position: absolute;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 5;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  text-decoration: none;
  color: var(--alp-text-secondary, #909090);
  font-size: 0.75rem;
}

.scroll-mouse-icon {
  width: 22px;
  height: 34px;
  border: 2px solid rgba(255, 255, 255, 0.3);
  border-radius: 12px;
  position: relative;
}

.scroll-mouse-icon::before {
  content: '';
  position: absolute;
  top: 6px;
  left: 50%;
  transform: translateX(-50%);
  width: 4px;
  height: 6px;
  background: var(--alp-brand-red, #8A1F1F);
  border-radius: 2px;
  animation: mouseWheel 2s infinite ease;
}

@keyframes mouseWheel {
  0%   { transform: translate(-50%, 0); opacity: 1; }
  100% { transform: translate(-50%, 14px); opacity: 0; }
}

/* ── 3. PHILOSOPHY SECTION ───────────────────────── */
.philosophy-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(36px, 5vw, 72px);
  align-items: center;
}

.philosophy-cards {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.philosophy-card {
  background: var(--alp-bg-card, #181818);
  border: 1px solid var(--alp-border-card);
  border-radius: var(--alp-radius-card, 12px);
  padding: 22px 26px;
  border-right: 3px solid var(--alp-brand-red, #8A1F1F);
  transition: transform var(--alp-duration-fast) ease;
}

.philosophy-card:hover {
  transform: translateX(-4px);
}

.philosophy-card h3 {
  margin: 0 0 8px;
  font-size: 1.15rem;
  font-weight: 700;
  color: #fff;
}

.philosophy-card p {
  margin: 0;
  font-size: 0.95rem;
  color: var(--alp-text-secondary, #909090);
  line-height: 1.7;
}

/* ── 4. FEATURES ROW ─────────────────────────────── */
.features-columns-row {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 1px;
  background: var(--alp-border-subtle, #2A2A2A);
  border: 1px solid var(--alp-border-subtle, #2A2A2A);
  border-radius: var(--alp-radius-card, 12px);
  overflow: hidden;
}

.feature-col-card {
  background: var(--alp-bg-alt, #141414);
  padding: clamp(24px, 3vw, 36px) 20px;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 14px;
  transition: background var(--alp-duration-fast) ease;
}

.feature-col-card:hover {
  background: var(--alp-bg-card, #181818);
}

.feature-icon-box {
  width: 52px;
  height: 52px;
  border-radius: 10px;
  background: rgba(138, 31, 31, 0.12);
  border: 1px solid rgba(138, 31, 31, 0.3);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--alp-brand-red, #8A1F1F);
  margin-bottom: 4px;
}

.feature-icon-box svg {
  width: 26px;
  height: 26px;
  stroke: currentColor;
  fill: none;
  stroke-width: 2;
}

.feature-col-title {
  margin: 0;
  font-size: 1.05rem;
  font-weight: var(--alp-fw-bold, 700);
  color: #fff;
}

.feature-col-desc {
  margin: 0;
  font-size: 0.88rem;
  color: var(--alp-text-secondary, #909090);
  line-height: 1.65;
}

/* ── 5. BIOMECHANICS & WORKING PLANES ────────────── */
.planes-mobile-tabs {
  display: none;
  gap: 8px;
  margin-bottom: 24px;
  overflow-x: auto;
  padding-bottom: 6px;
  -webkit-overflow-scrolling: touch;
}

.pm-tab {
  flex: 1 0 auto;
  padding: 10px 16px;
  font-size: 0.88rem;
  font-weight: 700;
  color: var(--alp-text-secondary, #909090);
  background: var(--alp-bg-card, #181818);
  border: 1px solid var(--alp-border-card);
  border-radius: 20px;
  cursor: pointer;
  white-space: nowrap;
  transition: all var(--alp-duration-fast) ease;
}

.pm-tab.active {
  background: var(--alp-brand-red, #8A1F1F);
  color: #fff;
  border-color: var(--alp-brand-red, #8A1F1F);
  box-shadow: 0 4px 14px rgba(138, 31, 31, 0.4);
}

.biomechanics-layout {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: clamp(32px, 4vw, 64px);
  align-items: start;
}

.planes-accordion {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.plane-item {
  background: var(--alp-bg-card, #181818);
  border: 1px solid var(--alp-border-card);
  border-radius: var(--alp-radius-card, 12px);
  border-right: 4px solid #333;
  overflow: hidden;
  transition: border-color var(--alp-duration-base) ease, transform var(--alp-duration-fast) ease;
  cursor: pointer;
}

.plane-item.active {
  border-right-color: var(--alp-brand-red, #8A1F1F);
  background: rgba(24, 24, 24, 0.95);
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.4);
}

.plane-header {
  padding: 20px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.plane-header-left {
  display: flex;
  align-items: center;
  gap: 16px;
}

.plane-badge {
  font-size: 1.25rem;
  font-weight: 900;
  color: var(--alp-brand-red, #8A1F1F);
  background: rgba(138, 31, 31, 0.14);
  padding: 6px 14px;
  border-radius: 8px;
  border: 1px solid rgba(138, 31, 31, 0.3);
}

.plane-title {
  margin: 0;
  font-size: 1.15rem;
  font-weight: 700;
  color: #fff;
}

.plane-body {
  padding: 0 24px 24px;
  display: none;
}

.plane-item.active .plane-body {
  display: block;
  animation: fadeIn 0.3s ease;
}

.plane-desc {
  margin: 0 0 16px;
  font-size: 0.95rem;
  color: var(--alp-text-secondary, #909090);
  line-height: 1.8;
}

.plane-muscles-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.muscle-pill {
  font-size: 0.8rem;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.1);
  color: #fff;
  padding: 4px 12px;
  border-radius: 20px;
}

.muscle-pill.highlight {
  background: rgba(138, 31, 31, 0.2);
  border-color: var(--alp-brand-red, #8A1F1F);
  color: #ff9999;
}

.biomechanics-media-card {
  position: sticky;
  top: 120px;
  background: var(--alp-bg-card, #181818);
  border: 1px solid var(--alp-border-card);
  border-radius: var(--alp-radius-card, 12px);
  padding: 30px;
  text-align: center;
}

.anatomy-summary h4 {
  margin: 0 0 8px;
  font-size: 1.2rem;
  color: #fff;
}

.anatomy-summary p {
  margin: 0;
  font-size: 0.92rem;
  color: var(--alp-text-secondary, #909090);
  line-height: 1.7;
}

/* ── 6. TECHNICAL SPECS SECTION ──────────────────── */
.specs-master-card {
  background: var(--alp-bg-card, #181818);
  border: 1px solid var(--alp-border-card);
  border-radius: var(--alp-radius-card, 12px);
  padding: clamp(28px, 4vw, 56px) clamp(20px, 3vw, 48px);
  box-shadow: 0 14px 45px rgba(0, 0, 0, 0.5);
}

.specs-grid-six {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: clamp(16px, 2vw, 32px);
  text-align: center;
}

.spec-col-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  padding: 16px 8px;
  border-left: 1px solid rgba(255, 255, 255, 0.05);
}

.spec-col-item:last-child {
  border-left: none;
}

.spec-icon-wrap {
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  opacity: 0.9;
}

.spec-icon-wrap svg {
  width: 28px;
  height: 28px;
  stroke: currentColor;
  fill: none;
  stroke-width: 1.8;
}

.spec-label {
  font-size: 0.88rem;
  color: var(--alp-text-secondary, #909090);
}

.spec-value {
  font-size: 1.18rem;
  font-weight: 800;
  color: #fff;
  line-height: 1.3;
}

.spec-sub {
  font-size: 0.75rem;
  color: var(--alp-brand-red, #8A1F1F);
  font-weight: 600;
}

.specs-extra-wrapper {
  margin-top: 36px;
  padding-top: 32px;
  border-top: 1px solid rgba(255, 255, 255, 0.07);
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.spec-extra-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px 16px;
  background: rgba(255, 255, 255, 0.02);
  border-radius: 8px;
  border: 1px solid rgba(255, 255, 255, 0.04);
}

.spec-extra-row span {
  font-size: 0.88rem;
  color: var(--alp-text-secondary, #909090);
}

.spec-extra-row strong {
  font-size: 0.92rem;
  color: #fff;
}

/* ── 7. INTERACTIVE 360 STUDIO SHOWCASE ──────────── */
.studio-360-hub {
  display: grid;
  grid-template-columns: 1.25fr 0.75fr;
  gap: clamp(24px, 3vw, 40px);
  background: var(--alp-bg-card, #181818);
  border: 1px solid var(--alp-border-card);
  border-radius: var(--alp-radius-card, 16px);
  padding: clamp(20px, 2.5vw, 36px);
  box-shadow: 0 16px 45px rgba(0,0,0,0.5);
  align-items: center;
}

.studio-360-viewport {
  position: relative;
  height: clamp(380px, 45vh, 520px);
  background: radial-gradient(circle at center, rgba(30, 30, 30, 0.8) 0%, rgba(10, 10, 10, 0.95) 100%);
  border: 1px solid rgba(255, 255, 255, 0.07);
  border-radius: 12px;
  overflow: hidden;
}

.studio-360-canvas {
  width: 100%;
  height: 100%;
  display: block;
}

.studio-orbit-badge {
  position: absolute;
  top: 16px;
  right: 16px;
  background: rgba(0, 0, 0, 0.75);
  border: 1px solid rgba(255, 255, 255, 0.12);
  backdrop-filter: blur(8px);
  border-radius: 20px;
  padding: 6px 14px;
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.82rem;
  color: #fff;
  pointer-events: none;
}

.studio-camera-presets {
  position: absolute;
  bottom: 16px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 8px;
  background: rgba(13, 13, 13, 0.85);
  padding: 6px 10px;
  border-radius: 24px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  backdrop-filter: blur(10px);
  z-index: 10;
  max-width: 95%;
  overflow-x: auto;
}

.preset-btn {
  background: transparent;
  border: 1px solid transparent;
  color: var(--alp-text-secondary, #909090);
  font-size: 0.8rem;
  padding: 5px 12px;
  border-radius: 16px;
  cursor: pointer;
  white-space: nowrap;
  transition: all var(--alp-duration-fast) ease;
}

.preset-btn:hover,
.preset-btn.active {
  color: #fff;
  background: var(--alp-brand-red, #8A1F1F);
  border-color: var(--alp-brand-red, #8A1F1F);
}

.studio-360-sidebar {
  padding: 16px;
  display: flex;
  flex-direction: column;
}

.studio-color-panel {
  background: rgba(0, 0, 0, 0.35);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: 10px;
  padding: 18px;
}

/* ── 8. LIVE 3D SNAPSHOT GALLERY ─────────────────── */
.gallery-strip-container {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin-bottom: 24px;
}

.gallery-photo-card {
  position: relative;
  border-radius: var(--alp-radius-card, 12px);
  overflow: hidden;
  border: 1px solid var(--alp-border-card);
  aspect-ratio: 1 / 1;
  background: #080808;
  cursor: pointer;
  transition: transform var(--alp-duration-fast) ease, box-shadow var(--alp-duration-fast) ease, border-color var(--alp-duration-fast) ease;
}

.gallery-photo-card:hover {
  transform: translateY(-4px);
  border-color: var(--alp-brand-red, #8A1F1F);
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.7);
}

.gallery-photo-card img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  padding: 12px;
  display: block;
  transition: transform var(--alp-duration-page) ease;
}

.gallery-photo-card:hover img {
  transform: scale(1.08);
}

.gallery-photo-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(0deg, rgba(0,0,0,0.85) 0%, transparent 60%);
  display: flex;
  align-items: flex-end;
  justify-content: center;
  padding: 14px;
  opacity: 0;
  transition: opacity var(--alp-duration-fast) ease;
}

.gallery-photo-card:hover .gallery-photo-overlay {
  opacity: 1;
}

.gallery-photo-overlay span {
  font-size: 0.85rem;
  color: #fff;
  font-weight: 700;
}

/* ── 9. ABOUT ALP ────────────────────────────────── */
.about-manifesto-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(36px, 6vw, 84px);
  align-items: center;
}

.about-text-col {
  text-align: right;
}

.about-text-col h2 {
  font-size: clamp(1.9rem, 3vw, 2.8rem);
  font-weight: 900;
  margin: 0 0 20px;
  color: #fff;
}

.about-text-col p {
  font-size: 1.05rem;
  color: var(--alp-text-secondary, #909090);
  line-height: 1.9;
  margin-bottom: 32px;
}

.about-visual-col {
  position: relative;
  text-align: center;
  padding: 40px;
}

.mountain-vector-bg {
  position: absolute;
  inset: 0;
  opacity: 0.15;
  background-image: radial-gradient(circle at center, rgba(138, 31, 31, 0.4) 0%, transparent 70%);
  pointer-events: none;
}

.about-big-logo {
  position: relative;
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
}

.about-big-logo svg {
  width: 130px;
  height: 130px;
}

.about-big-logo h3 {
  margin: 0;
  font-size: 3rem;
  font-weight: 900;
  letter-spacing: 0.1em;
  color: #fff;
}

.about-big-logo span {
  font-size: 0.9rem;
  letter-spacing: 0.35em;
  color: var(--alp-text-secondary, #909090);
}

/* ── 10. CONTACT & FOOTER SECTION ────────────────── */
.contact-grid-layout {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--alp-border-subtle, #2A2A2A);
  border: 1px solid var(--alp-border-subtle, #2A2A2A);
  border-radius: var(--alp-radius-card, 12px);
  overflow: hidden;
  margin-bottom: clamp(36px, 4vw, 56px);
}

.contact-card-col {
  background: var(--alp-bg-card, #181818);
  padding: clamp(28px, 3.5vw, 44px) 24px;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
}

.contact-icon-circle {
  width: 54px;
  height: 54px;
  border-radius: 50%;
  background: rgba(138, 31, 31, 0.12);
  border: 1px solid rgba(138, 31, 31, 0.3);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--alp-brand-red, #8A1F1F);
  margin-bottom: 4px;
}

.contact-card-col h4 {
  margin: 0;
  font-size: 1.15rem;
  color: #fff;
  font-weight: 700;
}

.contact-card-col a,
.contact-card-col address {
  color: var(--alp-text-secondary, #909090);
  text-decoration: none;
  font-size: 0.95rem;
  font-style: normal;
  line-height: 1.7;
  direction: ltr;
  display: inline-block;
  transition: color var(--alp-duration-fast) ease;
}

.contact-card-col a:hover {
  color: var(--alp-brand-red, #8A1F1F);
}

.site-footer-bottom {
  padding-block: 30px 44px;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 18px;
}

.social-links-row {
  display: flex;
  gap: 14px;
}

.social-circle-btn {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  border: 1px solid rgba(138, 31, 31, 0.4);
  background: rgba(138, 31, 31, 0.08);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--alp-brand-red, #8A1F1F);
  text-decoration: none;
  transition: background var(--alp-duration-fast) ease, transform var(--alp-duration-fast) ease;
}

.social-circle-btn:hover {
  background: var(--alp-brand-red, #8A1F1F);
  color: #fff;
  transform: translateY(-2px);
}

.social-circle-btn svg {
  width: 18px;
  height: 18px;
  fill: currentColor;
}

.footer-copyright-text {
  margin: 0;
  font-size: 0.82rem;
  color: var(--alp-text-faint, #666666);
  direction: ltr;
}

/* ── 11. MOBILE-FIRST RESPONSIVE DESIGN ─────────── */
@media (max-width: 1200px) {
  .features-columns-row    { grid-template-columns: repeat(3, 1fr); }
  .specs-grid-six          { grid-template-columns: repeat(3, 1fr); }
  .gallery-strip-container { grid-template-columns: repeat(4, 1fr); }
  .main-nav                { gap: 20px; }
}

@media (max-width: 980px) {
  .main-nav                { display: none; }
  .nav-toggle              { display: flex; }
  
  .home-hero               { min-height: auto; padding-top: 84px; padding-bottom: 40px; display: block; }
  .home-hero__grid         { grid-template-columns: 1fr; gap: 20px; }
  .home-hero__stage        { position: relative; height: 48vh; min-height: 320px; }
  .home-hero__content      { padding-block: 20px; }
  
  .philosophy-grid         { grid-template-columns: 1fr; }
  .biomechanics-layout     { grid-template-columns: 1fr; }
  .biomechanics-media-card { position: static; margin-top: 16px; }
  
  .studio-360-hub          { grid-template-columns: 1fr; }
  .about-manifesto-layout  { grid-template-columns: 1fr; }
  .contact-grid-layout     { grid-template-columns: 1fr; }
  .specs-extra-wrapper     { grid-template-columns: 1fr; }
  .gallery-strip-container { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 640px) {
  .alp-container           { width: calc(100% - 32px); }
  .landing-section         { padding-block: 40px; }
  
  .home-hero__stage        { height: 42vh; min-height: 280px; }
  .home-hero__title        { font-size: 2.3rem; }
  .home-hero__desc         { font-size: 1rem; }
  .home-hero__actions      { flex-direction: column; align-items: stretch; }
  .btn-primary-hero,
  .btn-secondary-hero      { width: 100%; min-width: auto; height: 50px; }
  
  .hero-3d-controls        { max-width: 100%; }
  
  .features-columns-row    { grid-template-columns: repeat(2, 1fr); }
  .specs-grid-six          { grid-template-columns: repeat(2, 1fr); }
  .spec-col-item           { border-left: none; border-bottom: 1px solid rgba(255,255,255,0.05); }
  
  .planes-accordion        { display: none; }
  .planes-mobile-tabs      { display: flex; }
  
  .gallery-strip-container { grid-template-columns: repeat(2, 1fr); gap: 10px; }
  
  .site-header             { height: 68px; }
  .btn-header-cta          { display: none; }
}