/* ═══════════════════════════════════════════════════════════════════════════
   RACK CFMOTO — Landing Page Styles
   Design system: Industrial minimalism, rally/enduro edge
   ═══════════════════════════════════════════════════════════════════════════ */

/* ─── CSS Variables / Design Tokens ──────────────────────────────────────── */
:root {
  --bg:         #F5F3F0;
  --bg-dark:    #1A1A1A;
  --text:       #1A1A1A;
  --text-light: #FFFFFF;
  --accent:     #00A3B4;
  --muted:      #888888;
  --border:     #E0DDD9;

  --font-display: 'Barlow Condensed', sans-serif;
  --font-body:    'DM Sans', sans-serif;

  --space-xs:  0.5rem;
  --space-s:   1rem;
  --space-m:   2rem;
  --space-l:   4rem;
  --space-xl:  7rem;

  --container: 1100px;
  --radius:    2px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

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

a {
  color: inherit;
  text-decoration: none;
}

/* ─── Language Toggle Logic ─────────────────────────────────────────────── */
/* Show only the active language, hide the other */
.lang-cs .en { display: none !important; }
.lang-en .cs { display: none !important; }

/* For inline spans inside headings — use inline-block when visible */
h1 span, h2 span, p span, a span, button span {
  display: inline;
}

/* ─── Container ─────────────────────────────────────────────────────────── */
.container {
  width: 100%;
  max-width: var(--container);
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--space-m);
  padding-right: var(--space-m);
}

/* ─── Typography: Shared ────────────────────────────────────────────────── */
h1, h2, h3 {
  font-family: var(--font-display);
  font-weight: 800;
  line-height: 1.05;
  letter-spacing: -0.01em;
  text-transform: uppercase;
}

.section-label {
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: var(--space-m);
  display: block;
}

/* ─── HEADER ─────────────────────────────────────────────────────────────── */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.25rem 2rem;
  /* Transparent initially; JS adds .scrolled class */
  background: transparent;
  transition: background 0.3s ease, box-shadow 0.3s ease;
}

.site-header.scrolled {
  background: rgba(245, 243, 240, 0.95);
  backdrop-filter: blur(8px);
  box-shadow: 0 1px 0 var(--border);
}

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

.site-logo {
  height: 44px;
  width: auto;
  display: block;
  /* On hero: invert SVG to white */
  filter: brightness(0) invert(1);
  transition: filter 0.3s ease;
}

.site-header.scrolled .site-logo {
  /* When scrolled: show dark logo on light background */
  filter: none;
}

.lang-toggle {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.lang-btn {
  background: none;
  border: none;
  cursor: pointer;
  font-family: var(--font-display);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  color: rgba(255,255,255,0.6);
  text-transform: uppercase;
  padding: 0.25rem 0;
  transition: color 0.2s ease;
}

.lang-btn.active {
  color: white;
  border-bottom: 1.5px solid white;
}

.site-header.scrolled .lang-btn {
  color: var(--muted);
}

.site-header.scrolled .lang-btn.active {
  color: var(--text);
  border-bottom-color: var(--text);
}

.lang-sep {
  color: rgba(255,255,255,0.3);
  font-size: 0.75rem;
}

.site-header.scrolled .lang-sep {
  color: var(--border);
}

/* ─── SECTION 1: HERO ────────────────────────────────────────────────────── */
.hero {
  position: relative;
  width: 100%;
  min-height: 100svh;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  align-items: flex-end;
  overflow: hidden;
}

.hero-media {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.hero-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 30%;
}

/* Gradient — darker on right side where text sits, lighter on left so rack is visible */
.hero-overlay {
  position: absolute;
  inset: 0;
}

.hero-content {
  position: relative;
  z-index: 1;
  padding: var(--space-xl) var(--space-m) var(--space-l);
  max-width: 620px;
  margin-left: auto;
  margin-right: 0;
  text-align: left;
}

/* Right-side gradient — darker on right where text sits */
.hero-overlay {
  background: linear-gradient(
    to left,
    rgba(0,0,0,0.82) 0%,
    rgba(0,0,0,0.55) 40%,
    rgba(0,0,0,0.15) 70%,
    rgba(0,0,0,0.05) 100%
  ),
  linear-gradient(
    to top,
    rgba(0,0,0,0.4) 0%,
    transparent 40%
  );
}

.eyebrow {
  font-family: var(--font-display);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 1.25rem;
}

.hero-content h1 {
  font-size: clamp(2rem, 4.5vw, 3.8rem);
  color: white;
  margin-bottom: 1.25rem;
  text-shadow: 0 2px 20px rgba(0,0,0,0.3);
}

.hero-sub {
  font-size: 1.05rem;
  color: rgba(255,255,255,0.8);
  margin-bottom: 2.5rem;
  max-width: 480px;
  letter-spacing: 0.01em;
}

/* ─── Signup Form ─────────────────────────────────────────────────────────── */
.signup-form {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
  max-width: 520px;
}

.form-row {
  display: flex;
  gap: 0;
  border: 1.5px solid rgba(255,255,255,0.35);
  border-radius: var(--radius);
  overflow: hidden;
  background: rgba(255,255,255,0.08);
  backdrop-filter: blur(6px);
}

.email-input {
  flex: 1;
  background: transparent;
  border: none;
  outline: none;
  padding: 0.9rem 1.1rem;
  font-family: var(--font-body);
  font-size: 0.95rem;
  color: white;
  min-width: 0;
}

.email-input::placeholder {
  color: rgba(255,255,255,0.45);
}

.btn-primary {
  background: var(--accent);
  border: none;
  cursor: pointer;
  padding: 0.9rem 1.4rem;
  font-family: var(--font-display);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: white;
  white-space: nowrap;
  transition: background 0.2s ease, transform 0.1s ease;
  flex-shrink: 0;
}

.btn-primary:hover {
  background: #008A99;
}

.btn-primary:active {
  transform: scale(0.98);
}

.form-note {
  font-size: 0.78rem;
  color: rgba(255,255,255,0.45);
  letter-spacing: 0.01em;
}

/* Success state */
.success-msg {
  font-family: var(--font-display);
  font-size: 1.3rem;
  font-weight: 700;
  text-transform: uppercase;
  color: var(--accent);
  padding: 1rem 0;
  letter-spacing: 0.05em;
}

/* ─── SECTION 2: THE PROBLEM ─────────────────────────────────────────────── */
.problem {
  padding: var(--space-xl) 0;
  border-top: 1px solid var(--border);
}

.problem-text {
  font-size: clamp(1.2rem, 2.4vw, 1.55rem);
  line-height: 1.75;
  color: var(--text);
  max-width: 680px;
  font-style: italic;
}

/* ─── SECTION 3: THE RACK ─────────────────────────────────────────────────── */
.product {
  padding: var(--space-xl) 0;
  background: white;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.photo-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  margin-bottom: var(--space-l);
}

.photo-item img {
  width: 100%;
  aspect-ratio: 4/3;
  object-fit: cover;
  object-position: center center;
  border-radius: var(--radius);
  background: #E8E6E3;
}

/* Build log model image — show full image, no crop */
.log-img-wrap--model img {
  aspect-ratio: auto;
  object-fit: contain;
  background: #FFFFFF;
  border: 1px solid rgba(255,255,255,0.1);
  padding: 1.5rem;
}

.caption {
  margin-top: 0.75rem;
  font-size: 1rem;
  color: var(--muted);
  letter-spacing: 0.01em;
  line-height: 1.5;
}

/* Features row */
.features {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  padding-top: var(--space-l);
  border-top: 1px solid var(--border);
}

.feature-item {
  display: flex;
  gap: 1rem;
  align-items: flex-start;
}

.feature-icon {
  width: 48px;
  height: 48px;
  flex-shrink: 0;
  color: var(--accent);
  margin-top: 0.1rem;
}

.feature-icon svg {
  width: 100%;
  height: 100%;
  display: block;
}

.feature-text {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
}

.feature-text strong {
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--text);
  display: block;
}

.feature-sub {
  font-size: 0.95rem;
  color: var(--text);
  display: block;
}

/* ─── SECTION 4: THE BUILDER ──────────────────────────────────────────────── */
.builder {
  padding: var(--space-xl) 0;
}

.builder-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: var(--space-l);
  align-items: center;
}

.builder-photo img {
  width: 100%;
  aspect-ratio: 4/3;
  object-fit: cover;
  object-position: center center;
  border-radius: var(--radius);
  background: #E8E6E3;
}

.builder-text h2 {
  font-size: clamp(2.5rem, 5vw, 4rem);
  margin-bottom: 1.25rem;
  color: var(--text);
}

.builder-text p {
  font-size: 1.1rem;
  line-height: 1.75;
  color: var(--text);
  margin-bottom: 1.5rem;
}

.social-follow {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--accent);
  letter-spacing: 0.02em;
  border-bottom: 1px solid transparent;
  transition: border-color 0.2s ease;
}

.social-follow:hover {
  border-bottom-color: var(--accent);
}

/* ─── SECTION 5: BUILD LOG ────────────────────────────────────────────────── */
.buildlog {
  padding: var(--space-xl) 0;
  background: var(--bg-dark);
  color: white;
}

.buildlog .section-label {
  color: var(--accent);
}

.buildlog-intro {
  color: rgba(255,255,255,0.55);
  font-size: 1rem;
  margin-top: -1rem;
  margin-bottom: var(--space-l);
  letter-spacing: 0.02em;
}

.log-entries {
  display: flex;
  flex-direction: column;
  gap: var(--space-l);
}

.log-entry {
  display: grid;
  grid-template-columns: 1fr 1.4fr;
  gap: var(--space-m);
  align-items: start;
  padding-bottom: var(--space-l);
  border-bottom: 1px solid rgba(255,255,255,0.08);
}

.log-entry:last-child {
  border-bottom: none;
  padding-bottom: 0;
}

.log-img-wrap img {
  width: 100%;
  aspect-ratio: 16/9;
  object-fit: cover;
  object-position: center center;
  border-radius: var(--radius);
  background: #2A2A2A;
  filter: contrast(1.05) saturate(0.9);
}

.log-img-wrap.log-img-wrap--model img {
  aspect-ratio: auto;
  object-fit: contain;
  background: #FFFFFF;
  border: 1px solid rgba(255,255,255,0.1);
  padding: 1.5rem;
  filter: none;
}

.log-date {
  display: block;
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 0.75rem;
}

.log-body p {
  font-size: 1.05rem;
  line-height: 1.7;
  color: rgba(255,255,255,0.9);
}

/* ─── SECTION 6: EMAIL SIGNUP REPEAT ─────────────────────────────────────── */
.signup-section {
  padding: var(--space-xl) 0;
  border-top: 1px solid var(--border);
}

.signup-inner {
  max-width: 640px;
}

.signup-section h2 {
  font-size: clamp(2.5rem, 6vw, 4.5rem);
  margin-bottom: 1rem;
  color: var(--text);
}

.signup-section > .signup-inner > p {
  font-size: 1.1rem;
  color: var(--muted);
  margin-bottom: 2.5rem;
  max-width: 480px;
}

/* Override form styling for the light background version */
.signup-form--large .form-row {
  border-color: var(--border);
  background: white;
  border-color: var(--text);
}

.signup-form--large .email-input {
  color: var(--text);
}

.signup-form--large .email-input::placeholder {
  color: var(--muted);
}

.signup-form--large .form-note {
  color: var(--muted);
}

/* ─── FOOTER ──────────────────────────────────────────────────────────────── */
.site-footer {
  background: var(--bg-dark);
  padding: var(--space-m) 0;
  border-top: 1px solid rgba(255,255,255,0.08);
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-m);
  flex-wrap: wrap;
}

.footer-left {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
}

.footer-logo {
  height: 28px;
  width: auto;
  display: block;
  /* On dark footer: invert to white */
  filter: brightness(0) invert(1);
  opacity: 0.9;
}

.footer-location {
  font-size: 0.78rem;
  color: rgba(255,255,255,0.35);
  letter-spacing: 0.03em;
}

.footer-social {
  display: flex;
  gap: var(--space-m);
}

.footer-link {
  font-size: 0.82rem;
  color: rgba(255,255,255,0.45);
  letter-spacing: 0.05em;
  text-transform: uppercase;
  font-family: var(--font-display);
  font-weight: 700;
  transition: color 0.2s ease;
}

.footer-link:hover {
  color: white;
}

.footer-credit {
  font-size: 0.78rem;
  color: rgba(255,255,255,0.25);
  letter-spacing: 0.03em;
  display: flex;
  gap: 0.35rem;
  align-items: center;
}

.footer-credit .footer-link {
  font-family: var(--font-body);
  font-weight: 400;
  font-size: 0.78rem;
  text-transform: none;
  letter-spacing: 0;
  color: rgba(255,255,255,0.35);
}

.footer-credit .footer-link:hover {
  color: rgba(255,255,255,0.7);
}

/* ═══════════════════════════════════════════════════════════════════════════
   RESPONSIVE — MOBILE FIRST
   ═══════════════════════════════════════════════════════════════════════════ */

/* ─── Tablet and below (< 900px) ─────────────────────────────────────────── */
@media (max-width: 900px) {
  :root {
    --space-l: 3rem;
    --space-xl: 5rem;
  }

  .photo-grid {
    grid-template-columns: 1fr;
    gap: 2.5rem;
  }

  .photo-item img {
    aspect-ratio: 16/9;
  }

  .features {
    grid-template-columns: 1fr;
    gap: 1.75rem;
  }

  .builder-grid {
    grid-template-columns: 1fr;
    gap: var(--space-m);
  }

  .builder-photo img {
    aspect-ratio: 16/9;
    max-height: 420px;
  }

  .log-entry {
    grid-template-columns: 1fr;
  }
}

/* ─── Mobile (< 600px) ───────────────────────────────────────────────────── */
@media (max-width: 600px) {
  :root {
    --space-l: 2.5rem;
    --space-xl: 4rem;
    --space-m: 1.25rem;
  }

  .site-header {
    padding: 1rem 1.25rem;
  }

  .hero {
    align-items: flex-start;
  }

  .hero-img {
    object-position: 30% 30%;
  }

  .hero-content {
    padding: 2.5rem 1.25rem 3rem;
    margin-left: 0;
    max-width: 100%;
  }

  .hero-content h1 {
    font-size: 1.9rem;
  }

  .hero-sub {
    font-size: 0.95rem;
  }

  .form-row {
    flex-direction: column;
  }

  .form-row .email-input {
    border-bottom: 1px solid rgba(255,255,255,0.15);
  }

  .btn-primary {
    width: 100%;
    text-align: center;
    justify-content: center;
    padding: 1rem;
  }

  .photo-grid {
    gap: 2rem;
  }

  .footer-inner {
    flex-direction: column;
    align-items: flex-start;
    gap: 1.25rem;
  }

  .footer-social {
    gap: 1.25rem;
  }
}

/* ─── Image placeholder (shows while photos load or are missing) ─────────── */
.hero-img[src="images/hero.jpg"]:not([src]),
img[src^="images/"]:not([src]) {
  background: #D0CEC9;
}

/* ─── Scroll animation utility ───────────────────────────────────────────── */
.fade-up {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

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