/* ============================================================
   EL RODANTE — Design System v1.0
   ============================================================ */

/* --- Google Fonts --- */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800;900&display=swap');

/* ============================================================
   CSS Custom Properties (Design Tokens)
   ============================================================ */
:root {
  /* Colors */
  --color-primary:        #005DA6;
  --color-primary-dark:   #00437A;
  --color-primary-light:  #0076D6;
  --color-secondary:      #FFC220;
  --color-secondary-dark: #E5A900;
  --color-secondary-light:#FFD254;
  --color-accent:         #FFC220;
  --color-accent-dark:    #E5A900;

  /* Neutrals */
  --color-white:       #FFFFFF;
  --color-gray-50:     #F8F9FA;
  --color-gray-100:    #F1F3F5;
  --color-gray-200:    #E9ECEF;
  --color-gray-300:    #DEE2E6;
  --color-gray-400:    #CED4DA;
  --color-gray-500:    #ADB5BD;
  --color-gray-600:    #6C757D;
  --color-gray-700:    #495057;
  --color-gray-800:    #343A40;
  --color-gray-900:    #212529;
  --color-black:       #0D0D0D;

  /* Semantic */
  --color-success:    #2DC653;
  --color-warning:    #FFC107;
  --color-error:      #E63946;
  --color-info:       #0DCAF0;

  /* Gradients */
  --gradient-hero:      linear-gradient(135deg, #005DA6 0%, #00437A 100%);
  --gradient-card:      linear-gradient(180deg, transparent 60%, rgba(0,0,0,0.6) 100%);
  --gradient-primary:   linear-gradient(135deg, #005DA6, #00437A);
  --gradient-shimmer:   linear-gradient(90deg, #f0f0f0 25%, #e0e0e0 50%, #f0f0f0 75%);

  /* Typography */
  --font-family:        'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', 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 */
  --font-size-5xl:      3rem;       /* 48px */

  --font-weight-light:    300;
  --font-weight-regular:  400;
  --font-weight-medium:   500;
  --font-weight-semibold: 600;
  --font-weight-bold:     700;
  --font-weight-extrabold:800;
  --font-weight-black:    900;

  --line-height-tight:  1.2;
  --line-height-snug:   1.35;
  --line-height-normal: 1.5;
  --line-height-relaxed:1.75;

  /* Spacing (4px base scale) */
  --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 */

  /* Border radius */
  --radius-sm:    4px;
  --radius-md:    8px;
  --radius-lg:    12px;
  --radius-xl:    16px;
  --radius-2xl:   24px;
  --radius-full:  9999px;

  /* Shadows */
  --shadow-xs:  0 1px 2px rgba(0,0,0,0.05);
  --shadow-sm:  0 1px 3px rgba(0,0,0,0.1), 0 1px 2px rgba(0,0,0,0.06);
  --shadow-md:  0 4px 6px rgba(0,0,0,0.07), 0 2px 4px rgba(0,0,0,0.06);
  --shadow-lg:  0 10px 15px rgba(0,0,0,0.1), 0 4px 6px rgba(0,0,0,0.05);
  --shadow-xl:  0 20px 25px rgba(0,0,0,0.1), 0 10px 10px rgba(0,0,0,0.04);
  --shadow-2xl: 0 25px 50px rgba(0,0,0,0.25);
  --shadow-card:0 2px 8px rgba(0,0,0,0.08), 0 0 1px rgba(0,0,0,0.04);
  --shadow-hover:0 8px 24px rgba(0,0,0,0.12), 0 2px 8px rgba(0,0,0,0.08);

  /* Transitions */
  --transition-fast:   150ms ease;
  --transition-base:   250ms ease;
  --transition-slow:   400ms ease;
  --transition-spring: 350ms cubic-bezier(0.34, 1.56, 0.64, 1);

  /* Z-index scale */
  --z-base:     0;
  --z-dropdown: 100;
  --z-sticky:   200;
  --z-overlay:  300;
  --z-modal:    400;
  --z-toast:    500;

  /* Layout */
  --container-max:      1400px;
  --container-padding:  clamp(1rem, 4vw, 2rem);
  --header-height:      64px;
  --header-height-top:  40px;
  --mega-menu-z:        150;
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-regular);
  line-height: var(--line-height-normal);
  color: var(--color-gray-900);
  background-color: var(--color-gray-50);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

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

ul, ol {
  list-style: none;
}

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

input, select, textarea {
  font-family: inherit;
  font-size: inherit;
}

/* ============================================================
   Typography
   ============================================================ */
h1, h2, h3, h4, h5, h6 {
  font-weight: var(--font-weight-bold);
  line-height: var(--line-height-tight);
  color: var(--color-gray-900);
}

h1 { font-size: clamp(var(--font-size-2xl), 4vw, var(--font-size-4xl)); }
h2 { font-size: clamp(var(--font-size-xl), 3vw, var(--font-size-3xl)); }
h3 { font-size: clamp(var(--font-size-lg), 2vw, var(--font-size-2xl)); }
h4 { font-size: var(--font-size-xl); }
h5 { font-size: var(--font-size-lg); }
h6 { font-size: var(--font-size-base); }

p { line-height: var(--line-height-relaxed); }

/* ============================================================
   Layout Utilities
   ============================================================ */
.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--container-padding);
}

.grid {
  display: grid;
  gap: var(--space-6);
}

.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
.grid-5 { grid-template-columns: repeat(5, 1fr); }
.grid-6 { grid-template-columns: repeat(6, 1fr); }

.flex { display: flex; }
.flex-col { flex-direction: column; }
.flex-center { align-items: center; justify-content: center; }
.flex-between { align-items: center; justify-content: space-between; }
.flex-wrap { flex-wrap: wrap; }
.gap-2 { gap: var(--space-2); }
.gap-3 { gap: var(--space-3); }
.gap-4 { gap: var(--space-4); }
.gap-6 { gap: var(--space-6); }
.gap-8 { gap: var(--space-8); }

/* ============================================================
   Text Utilities
   ============================================================ */
.text-xs     { font-size: var(--font-size-xs); }
.text-sm     { font-size: var(--font-size-sm); }
.text-base   { font-size: var(--font-size-base); }
.text-lg     { font-size: var(--font-size-lg); }
.text-xl     { font-size: var(--font-size-xl); }
.text-2xl    { font-size: var(--font-size-2xl); }
.text-center { text-align: center; }
.text-right  { text-align: right; }
.font-medium { font-weight: var(--font-weight-medium); }
.font-semi   { font-weight: var(--font-weight-semibold); }
.font-bold   { font-weight: var(--font-weight-bold); }
.font-black  { font-weight: var(--font-weight-black); }
.text-primary   { color: var(--color-primary); }
.text-secondary { color: var(--color-secondary); }
.text-muted     { color: var(--color-gray-600); }
.text-white     { color: var(--color-white); }
.text-success   { color: var(--color-success); }

/* ============================================================
   Spacing Utilities
   ============================================================ */
.mt-2  { margin-top: var(--space-2); }
.mt-4  { margin-top: var(--space-4); }
.mt-6  { margin-top: var(--space-6); }
.mt-8  { margin-top: var(--space-8); }
.mb-2  { margin-bottom: var(--space-2); }
.mb-4  { margin-bottom: var(--space-4); }
.mb-6  { margin-bottom: var(--space-6); }
.mb-8  { margin-bottom: var(--space-8); }
.py-4  { padding-top: var(--space-4); padding-bottom: var(--space-4); }
.py-8  { padding-top: var(--space-8); padding-bottom: var(--space-8); }
.py-12 { padding-top: var(--space-12); padding-bottom: var(--space-12); }
.py-16 { padding-top: var(--space-16); padding-bottom: var(--space-16); }
.px-4  { padding-left: var(--space-4); padding-right: var(--space-4); }
.p-4   { padding: var(--space-4); }
.p-6   { padding: var(--space-6); }

/* ============================================================
   Display Utilities
   ============================================================ */
.hidden       { display: none !important; }
.block        { display: block; }
.inline-block { display: inline-block; }
.relative     { position: relative; }
.sticky-top   { position: sticky; top: 0; z-index: var(--z-sticky); }
.overflow-hidden { overflow: hidden; }
.w-full       { width: 100%; }
.h-full       { height: 100%; }

/* ============================================================
   Buttons
   ============================================================ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  border-radius: var(--radius-md);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-semibold);
  line-height: 1;
  transition: all var(--transition-base);
  cursor: pointer;
  border: 2px solid transparent;
  white-space: nowrap;
  text-decoration: none;
  position: relative;
  overflow: hidden;
}

.btn::after {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(255,255,255,0);
  transition: background var(--transition-fast);
}

.btn:hover::after {
  background: rgba(255,255,255,0.1);
}

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

.btn-primary {
  background: var(--gradient-primary);
  color: var(--color-white);
  box-shadow: 0 4px 12px rgba(230,57,70,0.3);
}

.btn-primary:hover {
  box-shadow: 0 6px 20px rgba(230,57,70,0.4);
  transform: translateY(-1px);
}

.btn-secondary {
  background: var(--color-secondary);
  color: var(--color-white);
  box-shadow: 0 4px 12px rgba(29,53,87,0.3);
}

.btn-secondary:hover {
  background: var(--color-secondary-dark);
  transform: translateY(-1px);
}

.btn-outline {
  background: transparent;
  color: var(--color-primary);
  border-color: var(--color-primary);
}

.btn-outline:hover {
  background: var(--color-primary);
  color: var(--color-white);
}

.btn-ghost {
  background: transparent;
  color: var(--color-gray-700);
}

.btn-ghost:hover {
  background: var(--color-gray-100);
}

.btn-lg {
  padding: var(--space-4) var(--space-8);
  font-size: var(--font-size-lg);
}

.btn-sm {
  padding: var(--space-2) var(--space-4);
  font-size: var(--font-size-sm);
}

.btn-icon {
  padding: var(--space-3);
  border-radius: var(--radius-md);
  aspect-ratio: 1;
}

/* ============================================================
   Badges / Tags
   ============================================================ */
.badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-full);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-semibold);
  line-height: 1.4;
  white-space: nowrap;
}

.badge-danger   { background: rgba(230,57,70,0.12); color: var(--color-primary); }
.badge-success  { background: rgba(45,198,83,0.12); color: #1a9640; }
.badge-warning  { background: rgba(255,193,7,0.15);  color: #856404; }
.badge-info     { background: rgba(13,202,240,0.12); color: #0a6c7e; }
.badge-dark     { background: var(--color-gray-900); color: var(--color-white); }
.badge-primary  { background: var(--color-primary); color: var(--color-white); }
.badge-secondary{ background: var(--color-secondary); color: var(--color-white); }

/* ============================================================
   Cards
   ============================================================ */
.card {
  background: var(--color-white);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
  overflow: hidden;
  transition: box-shadow var(--transition-base), transform var(--transition-base);
}

.card:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-2px);
}

/* ============================================================
   Form Elements
   ============================================================ */
.input {
  width: 100%;
  padding: var(--space-3) var(--space-4);
  border: 1.5px solid var(--color-gray-300);
  border-radius: var(--radius-md);
  font-size: var(--font-size-base);
  font-family: inherit;
  color: var(--color-gray-900);
  background: var(--color-white);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
  outline: none;
}

.input:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(230,57,70,0.12);
}

.input::placeholder { color: var(--color-gray-400); }

.select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%236C757D' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right var(--space-3) center;
  padding-right: var(--space-8);
}

.checkbox-label {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  cursor: pointer;
  font-size: var(--font-size-sm);
  color: var(--color-gray-700);
  user-select: none;
  transition: color var(--transition-fast);
}

.checkbox-label:hover { color: var(--color-gray-900); }

.checkbox-label input[type="checkbox"] {
  appearance: none;
  width: 18px;
  height: 18px;
  border: 2px solid var(--color-gray-300);
  border-radius: var(--radius-sm);
  cursor: pointer;
  position: relative;
  flex-shrink: 0;
  transition: all var(--transition-fast);
}

.checkbox-label input[type="checkbox"]:checked {
  background: var(--color-primary);
  border-color: var(--color-primary);
}

.checkbox-label input[type="checkbox"]:checked::after {
  content: '';
  position: absolute;
  left: 4px;
  top: 1px;
  width: 6px;
  height: 10px;
  border: 2px solid white;
  border-top: none;
  border-left: none;
  transform: rotate(45deg);
}

/* ============================================================
   Section Headers
   ============================================================ */
.section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-8);
  gap: var(--space-4);
}

.section-header h2 {
  position: relative;
  padding-bottom: var(--space-3);
}

.section-header h2::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 48px;
  height: 3px;
  background: var(--gradient-primary);
  border-radius: var(--radius-full);
}

.section-header .view-all {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  color: var(--color-primary);
  display: flex;
  align-items: center;
  gap: var(--space-1);
  transition: gap var(--transition-fast);
  white-space: nowrap;
}

.section-header .view-all:hover { gap: var(--space-2); }

/* ============================================================
   Star Rating
   ============================================================ */
.stars {
  display: inline-flex;
  gap: 2px;
  color: var(--color-warning);
  font-size: var(--font-size-sm);
}

.stars .star-empty { color: var(--color-gray-300); }

/* ============================================================
   Price Display
   ============================================================ */
.price-box {
  display: flex;
  align-items: baseline;
  gap: var(--space-2);
  flex-wrap: wrap;
}

.price-current {
  font-size: var(--font-size-2xl);
  font-weight: var(--font-weight-black);
  color: var(--color-primary);
  line-height: 1;
}

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

.price-discount {
  background: rgba(230,57,70,0.1);
  color: var(--color-primary);
  padding: 2px 6px;
  border-radius: var(--radius-sm);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-bold);
}

/* ============================================================
   Dividers
   ============================================================ */
.divider {
  height: 1px;
  background: var(--color-gray-200);
  margin: var(--space-6) 0;
}

/* ============================================================
   Scroll to Top
   ============================================================ */
.scroll-top {
  position: fixed;
  bottom: var(--space-6);
  right: var(--space-6);
  width: 44px;
  height: 44px;
  border-radius: var(--radius-full);
  background: var(--color-secondary);
  color: var(--color-white);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-lg);
  cursor: pointer;
  opacity: 0;
  transform: translateY(20px);
  transition: all var(--transition-base);
  z-index: var(--z-sticky);
  border: none;
  font-size: 1.2rem;
}

.scroll-top.visible {
  opacity: 1;
  transform: translateY(0);
}

.scroll-top:hover {
  background: var(--color-primary);
  transform: translateY(-2px);
}

/* ============================================================
   Responsive Grid Breakpoints
   ============================================================ */
@media (max-width: 1200px) {
  .grid-6 { grid-template-columns: repeat(4, 1fr); }
  .grid-5 { grid-template-columns: repeat(4, 1fr); }
}

@media (max-width: 992px) {
  .grid-6, .grid-5, .grid-4 { grid-template-columns: repeat(3, 1fr); }
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
  .hide-desktop { display: none !important; }
}

@media (max-width: 768px) {
  .grid-6, .grid-5, .grid-4, .grid-3 { grid-template-columns: repeat(2, 1fr); }
  .grid-2 { grid-template-columns: 1fr; }
  .hide-tablet { display: none !important; }
  .show-mobile { display: flex !important; }
}

@media (max-width: 480px) {
  .grid-6, .grid-5, .grid-4, .grid-3, .grid-2 { grid-template-columns: 1fr; }
  .hide-mobile { display: none !important; }
}

/* ============================================================
   Accessibility
   ============================================================ */
.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;
}

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

/* ============================================================
   Smooth page transitions
   ============================================================ */
main {
  animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to   { opacity: 1; transform: translateY(0); }
}