/* ==========================================================================
   STREEDTION STORE — CSS SYSTEM (STREETWEAR AESTHETIC)
   ========================================================================== */

/* --------------------------------------------------------------------------
   01. CUSTOM PROPERTIES & THEME CONFIGURATION
   -------------------------------------------------------------------------- */
:root {
  /* Color Palette — Monochromatic base with Acid Green Accent */
  --bg-primary: #0a0a0c;
  --bg-surface: #121216;
  --bg-surface-hover: #1a1a20;
  --bg-card: #141418;
  
  --border-color: #26262e;
  --border-active: #3a3a46;
  
  --text-primary: #f2f2f5;
  --text-secondary: #a0a0ac;
  --text-muted: #666675;
  
  /* Acid Accent — Used for badges, borders, high-impact highlights */
  --accent-color: #c6ff3d;
  --accent-text: #0a0a0c;
  
  /* Typography System */
  --font-family-sans: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
  --font-family-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
  
  /* Spacing Scale */
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2.5rem;
  --space-2xl: 4rem;
  --space-3xl: 6rem;

  /* Layout */
  --container-max-width: 1200px;
  --border-radius: 0px; /* Sharp brutalist edges */
}

/* Light Theme Support */
@media (prefers-color-scheme: light) {
  :root {
    --bg-primary: #f5f5f7;
    --bg-surface: #ffffff;
    --bg-surface-hover: #ebebee;
    --bg-card: #ffffff;
    
    --border-color: #d1d1d8;
    --border-active: #a8a8b3;
    
    --text-primary: #0f0f12;
    --text-secondary: #4a4a56;
    --text-muted: #757585;
    
    /* Acid Accent in light mode — kept contrast compliant with dark text overlay */
    --accent-color: #2b7a00; /* Rich streetwear green for text/borders in light mode for WCAG 4.5:1 */
    --accent-text: #ffffff;
  }
}

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

html {
  font-family: var(--font-family-sans);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

main {
  flex: 1;
}

/* Accessibility: Skip Link */
.skip-link {
  position: absolute;
  top: -100px;
  left: 1rem;
  background: var(--accent-color);
  color: var(--accent-text);
  padding: 0.5rem 1rem;
  font-weight: 700;
  text-decoration: none;
  z-index: 9999;
}
.skip-link:focus-visible {
  top: 1rem;
}

:focus-visible {
  outline: 2px solid var(--accent-color);
  outline-offset: 3px;
}

/* Container */
.container {
  width: 100%;
  max-width: var(--container-max-width);
  margin: 0 auto;
  padding: 0 var(--space-md);
}

/* --------------------------------------------------------------------------
   03. HEADER & BRANDING
   -------------------------------------------------------------------------- */
.site-header {
  border-bottom: 1px solid var(--border-color);
  background-color: var(--bg-surface);
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 64px;
  max-width: var(--container-max-width);
  margin: 0 auto;
  padding: 0 var(--space-md);
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
  color: var(--text-primary);
}

.logo-text {
  font-family: var(--font-family-mono);
  font-weight: 800;
  font-size: 1.25rem;
  letter-spacing: 0.15em;
}

.header-nav {
  display: none;
}

@media (min-width: 768px) {
  .header-nav {
    display: block;
  }
}

.header-nav .nav-list {
  display: flex;
  gap: 1.5rem;
  list-style: none;
}

.nav-item-disabled {
  font-family: var(--font-family-mono);
  font-size: 0.85rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  cursor: not-allowed;
}

/* --------------------------------------------------------------------------
   04. HERO SECTION
   -------------------------------------------------------------------------- */
.hero-section {
  padding: var(--space-3xl) 0 var(--space-2xl);
  border-bottom: 1px solid var(--border-color);
  background: radial-gradient(circle at 80% 20%, rgba(198, 255, 61, 0.03) 0%, transparent 60%);
}

.status-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-family-mono);
  font-size: 0.8rem;
  font-weight: 700;
  background-color: var(--accent-color);
  color: var(--accent-text);
  padding: 0.35rem 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: var(--space-lg);
}

.pulse-dot {
  width: 8px;
  height: 8px;
  background-color: var(--accent-text);
  border-radius: 50%;
}

.hero-title {
  font-size: clamp(2.2rem, 5vw, 4rem);
  font-weight: 900;
  line-height: 1.05;
  letter-spacing: -0.03em;
  text-transform: uppercase;
  max-width: 900px;
  margin-bottom: var(--space-sm);
}

.hero-ru-text {
  font-size: clamp(1rem, 2vw, 1.35rem);
  color: var(--accent-color);
  font-weight: 600;
  margin-bottom: var(--space-lg);
}

.hero-subtitle {
  font-size: clamp(1rem, 1.5vw, 1.25rem);
  color: var(--text-secondary);
  max-width: 680px;
  margin-bottom: var(--space-xl);
}

.hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-md);
}

.meta-tag {
  font-family: var(--font-family-mono);
  font-size: 0.75rem;
  color: var(--text-muted);
  border: 1px solid var(--border-color);
  padding: 0.4rem 0.8rem;
  letter-spacing: 0.1em;
}

/* --------------------------------------------------------------------------
   05. SECTION COMMON & CATEGORIES
   -------------------------------------------------------------------------- */
.section-header {
  margin-bottom: var(--space-xl);
}

.section-label {
  font-family: var(--font-family-mono);
  font-size: 0.8rem;
  color: var(--text-muted);
  letter-spacing: 0.1em;
  display: block;
  margin-bottom: var(--space-xs);
}

.section-title {
  font-size: clamp(1.75rem, 3vw, 2.5rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  text-transform: uppercase;
}

.categories-section {
  padding: var(--space-3xl) 0;
  border-bottom: 1px solid var(--border-color);
}

.categories-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: var(--space-md);
}

.category-card {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  padding: var(--space-lg);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  min-height: 200px;
}

.card-num {
  font-family: var(--font-family-mono);
  font-size: 0.8rem;
  color: var(--text-muted);
}

.card-title {
  font-size: 1.25rem;
  font-weight: 700;
  margin: var(--space-sm) 0;
  letter-spacing: -0.01em;
}

.card-desc {
  font-size: 0.9rem;
  color: var(--text-secondary);
  margin-bottom: var(--space-md);
}

.card-status {
  font-family: var(--font-family-mono);
  font-size: 0.7rem;
  font-weight: 700;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  border-top: 1px dashed var(--border-color);
  padding-top: var(--space-sm);
}

/* --------------------------------------------------------------------------
   06. TIMELINE & FEATURES
   -------------------------------------------------------------------------- */
.timeline-section {
  padding: var(--space-3xl) 0;
  border-bottom: 1px solid var(--border-color);
  background-color: var(--bg-surface);
}

.timeline-wrapper {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-lg);
}

.timeline-step {
  border-left: 2px solid var(--border-color);
  padding-left: var(--space-md);
  position: relative;
}

.step-marker {
  font-family: var(--font-family-mono);
  font-size: 1.5rem;
  font-weight: 900;
  color: var(--text-muted);
  margin-bottom: var(--space-xs);
}

.step-title {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: var(--space-xs);
}

.step-desc {
  font-size: 0.9rem;
  color: var(--text-secondary);
  margin-bottom: var(--space-sm);
}

.step-badge {
  display: inline-block;
  font-family: var(--font-family-mono);
  font-size: 0.7rem;
  font-weight: 700;
  padding: 0.2rem 0.5rem;
  border: 1px solid var(--border-color);
  color: var(--text-muted);
}

.step-badge.active {
  background-color: var(--accent-color);
  color: var(--accent-text);
  border-color: var(--accent-color);
}

.features-section {
  padding: var(--space-3xl) 0;
  border-bottom: 1px solid var(--border-color);
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: var(--space-lg);
}

.feature-card {
  border: 1px solid var(--border-color);
  padding: var(--space-lg);
  background-color: var(--bg-card);
}

.feature-icon {
  color: var(--accent-color);
  margin-bottom: var(--space-md);
}

.feature-title {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: var(--space-xs);
}

.feature-desc {
  font-size: 0.875rem;
  color: var(--text-secondary);
}

/* --------------------------------------------------------------------------
   07. ALERT FORM & FOOTER
   -------------------------------------------------------------------------- */
.alert-section {
  padding: var(--space-3xl) 0;
  border-bottom: 1px solid var(--border-color);
  background-color: var(--bg-surface);
}

.alert-box {
  max-width: 640px;
  margin: 0 auto;
  text-align: center;
}

.alert-title {
  font-size: 2rem;
  font-weight: 800;
  margin-bottom: var(--space-xs);
  text-transform: uppercase;
}

.alert-desc {
  color: var(--text-secondary);
  margin-bottom: var(--space-lg);
}

.form-disabled-wrapper {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
  margin-bottom: var(--space-xs);
}

@media (min-width: 600px) {
  .form-disabled-wrapper {
    flex-direction: row;
  }
}

.input-disabled {
  flex: 1;
  padding: 0.75rem 1rem;
  background-color: var(--bg-primary);
  border: 1px solid var(--border-color);
  color: var(--text-muted);
  font-family: var(--font-family-mono);
  cursor: not-allowed;
}

.btn-disabled {
  padding: 0.75rem 1.5rem;
  background-color: var(--border-color);
  color: var(--text-muted);
  border: none;
  font-weight: 700;
  font-family: var(--font-family-mono);
  text-transform: uppercase;
  cursor: not-allowed;
}

.form-note {
  font-family: var(--font-family-mono);
  font-size: 0.75rem;
  color: var(--text-muted);
}

.site-footer {
  padding: var(--space-xl) 0;
  background-color: var(--bg-primary);
}

.footer-container {
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
  align-items: center;
  text-align: center;
}

@media (min-width: 768px) {
  .footer-container {
    flex-direction: row;
    justify-content: space-between;
    text-align: left;
  }
}

.footer-logo {
  font-family: var(--font-family-mono);
  font-weight: 800;
  font-size: 1rem;
  letter-spacing: 0.15em;
  display: block;
}

.footer-copyright {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-top: 0.25rem;
}

.footer-nav {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-md);
  justify-content: center;
}

.footer-item {
  font-family: var(--font-family-mono);
  font-size: 0.8rem;
  color: var(--text-muted);
}