/* ===========================================================================
   Variables
   ======================================================================== */

:root {
  /* Colors */
  --color-bg: #05080f;                /* Deep, sleek background for sporty feel */
  --color-bg-elevated: #0c111a;
  --color-surface: #111827;
  --color-surface-soft: #1f2933;

  --color-text: #f9fafb;
  --color-text-muted: #9ca3af;
  --color-border-subtle: #1f2933;

  /* Energetic brand palette */
  --color-primary: #0ea5e9;           /* Bold blue – trust & performance */
  --color-primary-soft: rgba(14, 165, 233, 0.12);
  --color-accent-green: #22c55e;      /* Crisp green – energy & vitality */
  --color-accent-green-soft: rgba(34, 197, 94, 0.14);
  --color-accent-orange: #f97316;     /* Vibrant orange – action & motion */
  --color-accent-orange-soft: rgba(249, 115, 22, 0.14);

  --color-success: #22c55e;
  --color-warning: #facc15;
  --color-danger: #ef4444;

  /* Neutral grays (cool) */
  --gray-50: #f9fafb;
  --gray-100: #f3f4f6;
  --gray-200: #e5e7eb;
  --gray-300: #d1d5db;
  --gray-400: #9ca3af;
  --gray-500: #6b7280;
  --gray-600: #4b5563;
  --gray-700: #374151;
  --gray-800: #1f2933;
  --gray-900: #111827;

  /* Typography */
  --font-sans: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
    "Helvetica Neue", Arial, "Noto Sans", sans-serif, "Apple Color Emoji",
    "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji";
  --font-heading: "Inter", system-ui, -apple-system, BlinkMacSystemFont,
    "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;

  --font-size-xs: 0.75rem;   /* 12px */
  --font-size-sm: 0.875rem;  /* 14px */
  --font-size-base: 1rem;    /* 16px */
  --font-size-lg: 1.125rem;  /* 18px */
  --font-size-xl: 1.25rem;   /* 20px */
  --font-size-2xl: 1.5rem;   /* 24px */
  --font-size-3xl: 1.875rem; /* 30px */
  --font-size-4xl: 2.25rem;  /* 36px */

  --line-height-tight: 1.2;
  --line-height-snug: 1.35;
  --line-height-normal: 1.5;
  --line-height-relaxed: 1.7;

  /* Spacing scale (0–96px) */
  --space-0: 0;
  --space-1: 0.25rem;  /* 4px */
  --space-2: 0.5rem;   /* 8px */
  --space-3: 0.75rem;  /* 12px */
  --space-4: 1rem;     /* 16px */
  --space-5: 1.25rem;  /* 20px */
  --space-6: 1.5rem;   /* 24px */
  --space-8: 2rem;     /* 32px */
  --space-10: 2.5rem;  /* 40px */
  --space-12: 3rem;    /* 48px */
  --space-16: 4rem;    /* 64px */
  --space-20: 5rem;    /* 80px */
  --space-24: 6rem;    /* 96px */

  /* Radius */
  --radius-xs: 0.125rem;
  --radius-sm: 0.25rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-pill: 999px;

  /* Shadows */
  --shadow-soft: 0 10px 25px rgba(15, 23, 42, 0.35);
  --shadow-elevated: 0 18px 45px rgba(15, 23, 42, 0.55);
  --shadow-focus: 0 0 0 1px #0ea5e9, 0 0 0 4px rgba(14, 165, 233, 0.4);

  /* Transitions */
  --transition-fast: 120ms ease-out;
  --transition-medium: 180ms ease-out;
  --transition-slow: 260ms ease-out;
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  :root {
    --transition-fast: 0ms;
    --transition-medium: 0ms;
    --transition-slow: 0ms;
  }
}

/* ===========================================================================
   Reset / Normalize
   ======================================================================== */

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  margin: 0;
  padding: 0;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
}

h1,
h2,
h3,
h4,
h5,
h6,
p,
figure,
blockquote,
ol,
ul {
  margin: 0;
  padding: 0;
}

ol,
ul {
  list-style: none;
}

img,
svg,
video,
canvas,
audio,
iframe,
embed,
object {
  display: block;
  max-width: 100%;
}

img,
video {
  height: auto;
}

button,
input,
select,
textarea {
  margin: 0;
  font: inherit;
  color: inherit;
  background: none;
  border-radius: 0;
}

button {
  border: none;
  padding: 0;
  cursor: pointer;
  background: none;
}

button:disabled {
  cursor: not-allowed;
}

textarea {
  resize: vertical;
}

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

[hidden] {
  display: none !important;
}

/* ===========================================================================
   Base Styles
   ======================================================================== */

body {
  min-height: 100vh;
  font-family: var(--font-sans);
  font-size: var(--font-size-base);
  line-height: var(--line-height-normal);
  color: var(--color-text);
  background-color: var(--color-bg);
  -webkit-font-smoothing: antialiased;
}

main {
  display: block;
}

h1,
 h2,
 h3,
 h4,
 h5,
 h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  color: var(--gray-50);
  letter-spacing: 0.01em;
}

h1 {
  font-size: clamp(2.25rem, 2vw + 1.8rem, 3rem);
  line-height: var(--line-height-tight);
  margin-bottom: var(--space-4);
}

h2 {
  font-size: clamp(1.875rem, 1.4vw + 1.4rem, 2.25rem);
  line-height: var(--line-height-tight);
  margin-bottom: var(--space-3);
}

h3 {
  font-size: 1.5rem;
  line-height: var(--line-height-snug);
  margin-bottom: var(--space-2);
}

h4 {
  font-size: 1.25rem;
  line-height: var(--line-height-snug);
  margin-bottom: var(--space-2);
}

p {
  margin-bottom: var(--space-3);
  color: var(--color-text-muted);
}

strong {
  font-weight: 600;
}

code,
pre {
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas,
    "Liberation Mono", "Courier New", monospace;
}

hr {
  border: none;
  border-top: 1px solid var(--color-border-subtle);
  margin: var(--space-6) 0;
}

/* Links */

a {
  position: relative;
  color: var(--color-primary);
  text-decoration: none;
  transition: color var(--transition-fast),
    opacity var(--transition-fast);
}

a:hover {
  color: var(--color-accent-orange);
}

a:focus-visible {
  outline: none;
  box-shadow: var(--shadow-focus);
  border-radius: var(--radius-sm);
}

/* ===========================================================================
   Accessibility
   ======================================================================== */

:focus {
  outline: none;
}

:focus-visible {
  outline: none;
  box-shadow: var(--shadow-focus);
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }
}

/* Screen-reader only */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* ===========================================================================
   Utilities
   ======================================================================== */

/* Layout */

.container {
  width: 100%;
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--space-4);
  padding-right: var(--space-4);
  max-width: 1200px;
}

@media (min-width: 1280px) {
  .container {
    max-width: 1280px;
  }
}

.flex {
  display: flex;
}

.flex-column {
  display: flex;
  flex-direction: column;
}

.flex-center {
  display: flex;
  align-items: center;
  justify-content: center;
}

.flex-between {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.flex-wrap {
  flex-wrap: wrap;
}

.grid {
  display: grid;
}

.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-6);
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--space-6);
}

@media (max-width: 768px) {
  .grid-2,
  .grid-3 {
    grid-template-columns: minmax(0, 1fr);
  }
}

/* Simple spacing utilities (commonly used) */

.mt-0 { margin-top: 0 !important; }
.mt-2 { margin-top: var(--space-2) !important; }
.mt-4 { margin-top: var(--space-4) !important; }
.mt-6 { margin-top: var(--space-6) !important; }

.mb-0 { margin-bottom: 0 !important; }
.mb-2 { margin-bottom: var(--space-2) !important; }
.mb-4 { margin-bottom: var(--space-4) !important; }
.mb-6 { margin-bottom: var(--space-6) !important; }

.pt-4 { padding-top: var(--space-4) !important; }
.pb-4 { padding-bottom: var(--space-4) !important; }
.py-6 {
  padding-top: var(--space-6) !important;
  padding-bottom: var(--space-6) !important;
}

.text-center {
  text-align: center !important;
}

.badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.15rem 0.6rem;
  border-radius: var(--radius-pill);
  font-size: var(--font-size-xs);
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.badge--accent {
  background: var(--color-accent-orange-soft);
  color: var(--color-accent-orange);
}

.badge--success {
  background: var(--color-accent-green-soft);
  color: var(--color-accent-green);
}

/* ===========================================================================
   Components
   ======================================================================== */

/* Buttons */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.75rem 1.5rem;
  border-radius: var(--radius-pill);
  border: 1px solid transparent;
  font-size: var(--font-size-sm);
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  text-decoration: none;
  white-space: nowrap;
  cursor: pointer;
  transition: background-color var(--transition-fast),
    color var(--transition-fast),
    border-color var(--transition-fast),
    box-shadow var(--transition-fast),
    transform var(--transition-fast);
}

.btn--primary {
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent-green));
  color: #0b1120;
  box-shadow: 0 10px 30px rgba(56, 189, 248, 0.35);
}

.btn--primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 16px 40px rgba(34, 197, 94, 0.45);
}

.btn--outline {
  background-color: transparent;
  color: var(--color-text);
  border-color: var(--gray-600);
}

.btn--outline:hover {
  border-color: var(--color-primary);
  background-color: rgba(15, 23, 42, 0.85);
}

.btn--ghost {
  background: rgba(15, 23, 42, 0.65);
  color: var(--color-text);
  border-color: transparent;
}

.btn--ghost:hover {
  background: rgba(15, 23, 42, 0.9);
}

.btn:focus-visible {
  box-shadow: var(--shadow-focus);
}

.btn:disabled,
.btn[aria-disabled="true"] {
  opacity: 0.55;
  cursor: not-allowed;
  box-shadow: none;
  transform: none;
}

/* Inputs */
/* Мобильная адаптация кнопок */
@media (max-width: 480px) {
  .btn {
    font-size: var(--font-size-xs);
    padding: 0.5rem 0.7rem;
    min-width: 0;
    white-space: normal;
    word-break: break-word;
    line-height: 1.2;
  }
  .btn--primary,
  .btn--outline,
  .btn--ghost {
    font-size: var(--font-size-xs);
    padding: 0.5rem 0.7rem;
  }
}

.input,
select,
textarea {
  width: 100%;
  padding: 0.7rem 0.85rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border-subtle);
  background-color: rgba(15, 23, 42, 0.9);
  color: var(--color-text);
  font-size: var(--font-size-sm);
  transition: border-color var(--transition-fast),
    box-shadow var(--transition-fast),
    background-color var(--transition-fast);
}

.input::placeholder,
textarea::placeholder {
  color: var(--gray-500);
}

.input:focus-visible,
select:focus-visible,
textarea:focus-visible {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-focus);
  outline: none;
}

.input[disabled],
select[disabled],
textarea[disabled] {
  opacity: 0.6;
  cursor: not-allowed;
}

/* Cards (e.g., product tiles, feature blocks) */

.card {
  position: relative;
  display: flex;
  flex-direction: column;
  background: radial-gradient(circle at top left, rgba(14, 165, 233, 0.18), transparent 55%),
    radial-gradient(circle at bottom right, rgba(249, 115, 22, 0.16), transparent 55%),
    var(--color-surface);
  border-radius: var(--radius-lg);
  padding: var(--space-4);
  box-shadow: var(--shadow-soft);
  border: 1px solid rgba(148, 163, 184, 0.22);
  overflow: hidden;
  transition: transform var(--transition-medium),
    box-shadow var(--transition-medium),
    border-color var(--transition-medium),
    background-position var(--transition-medium);
  background-size: 200% 200%;
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-elevated);
  border-color: rgba(56, 189, 248, 0.55);
}

.card__header {
  margin-bottom: var(--space-3);
}

.card__title {
  font-size: var(--font-size-lg);
  line-height: var(--line-height-snug);
  margin-bottom: var(--space-1);
}

.card__subtitle {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
}

.card__body {
  flex: 1 1 auto;
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
}

.card__footer {
  margin-top: var(--space-4);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-2);
}

/* Hero / image emphasis (for dynamic sport imagery) */

.hero-media {
  position: relative;
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-elevated);
}

.hero-media img,
.hero-media video {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hero-media::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(8, 47, 73, 0.7), rgba(15, 118, 110, 0));
  mix-blend-mode: multiply;
  pointer-events: none;
}

/* Chips / filters (useful for sport categories, sizes, etc.) */

.chip {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.35rem 0.9rem;
  border-radius: var(--radius-pill);
  border: 1px solid var(--gray-600);
  font-size: var(--font-size-xs);
  font-weight: 500;
  color: var(--gray-100);
  background: rgba(15, 23, 42, 0.8);
  cursor: pointer;
  transition: border-color var(--transition-fast),
    background-color var(--transition-fast),
    color var(--transition-fast);
}

.chip--active {
  border-color: var(--color-primary);
  background: var(--color-primary-soft);
  color: var(--color-primary);
}

.chip:focus-visible {
  box-shadow: var(--shadow-focus);
}

/* Price emphasis */

.price {
  font-weight: 700;
  font-size: var(--font-size-lg);
  color: var(--color-accent-green);
}

.price--old {
  font-size: var(--font-size-sm);
  color: var(--gray-500);
  text-decoration: line-through;
}

/* Badges for promotions */

.badge-promo {
  position: absolute;
  top: var(--space-3);
  left: var(--space-3);
  padding: 0.25rem 0.75rem;
  border-radius: var(--radius-pill);
  background: linear-gradient(135deg, var(--color-accent-orange), #fb923c);
  color: #0b1120;
  font-size: var(--font-size-xs);
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.badge-new {
  position: absolute;
  top: var(--space-3);
  right: var(--space-3);
  padding: 0.25rem 0.75rem;
  border-radius: var(--radius-pill);
  background: var(--color-primary-soft);
  color: var(--color-primary);
  font-size: var(--font-size-xs);
  font-weight: 600;
  text-transform: uppercase;
}

/* Toast / feedback (success, warning, error) */

.toast {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-md);
  background-color: rgba(15, 23, 42, 0.98);
  border: 1px solid var(--gray-700);
  color: var(--color-text);
  box-shadow: var(--shadow-soft);
}

.toast--success {
  border-color: rgba(34, 197, 94, 0.65);
}

.toast--warning {
  border-color: rgba(250, 204, 21, 0.7);
}

.toast--danger {
  border-color: rgba(248, 113, 113, 0.8);
}

/* End of base.css */