/* ============================================
   STYLE.CSS — Global styles, variables, base
   ============================================ */

/* === CSS VARIABLES === */
:root {
  --color-primary:      #2563EB;
  --color-primary-dark: #1D4ED8;
  --color-secondary:    #F97316;
  --color-bg:           #F8FAFC;
  --color-surface:      #FFFFFF;
  --color-text:         #1E293B;
  --color-text-muted:   #64748B;
  --color-border:       #E2E8F0;
  --color-success:      #22C55E;

  --radius-card: 12px;
  --radius-btn:  8px;

  --shadow-card:       0 4px 24px rgba(0, 0, 0, 0.07);
  --shadow-card-hover: 0 8px 32px rgba(0, 0, 0, 0.12);
  --shadow-primary:    0 4px 16px rgba(37, 99, 235, 0.3);

  --section-padding:        80px;
  --section-padding-mobile: 48px;

  --nav-height: 72px;

  --transition-base: 0.2s ease;
  --transition-card: 0.25s ease;
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--nav-height);
  font-size: 16px;
  overflow-x: hidden;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  color: var(--color-text);
  background-color: var(--color-bg);
  line-height: 1.7;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

ul, ol {
  list-style: none;
}

/* === TYPOGRAPHY === */
h1, h2, h3, h4, h5, h6 {
  font-family: 'Sora', 'Inter', sans-serif;
  line-height: 1.2;
  color: var(--color-text);
}

h1 { font-size: 2.8rem; font-weight: 700; }
h2 { font-size: 2rem;   font-weight: 600; }
h3 { font-size: 1.25rem; font-weight: 600; }

p {
  color: var(--color-text);
}

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color var(--transition-base);
}

a:hover {
  color: var(--color-primary-dark);
}

/* === FOCUS STYLES (accessibility) === */
:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 3px;
  border-radius: 4px;
}

/* === CONTAINER === */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* === PROGRESS BAR === */
.progress-bar {
  position: fixed;
  top: 0;
  left: 0;
  width: 0%;
  height: 3px;
  background-color: var(--color-primary);
  z-index: 9999;
  transition: width 0.1s linear;
  border-radius: 0 2px 2px 0;
}

/* === BUTTONS === */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 28px;
  border-radius: var(--radius-btn);
  font-family: 'Inter', sans-serif;
  font-size: 1rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  cursor: pointer;
  transition: all var(--transition-base);
  border: 2px solid transparent;
  text-decoration: none;
  white-space: nowrap;
  line-height: 1;
}

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

.btn-primary {
  background-color: var(--color-primary);
  color: var(--color-surface);
  border-color: var(--color-primary);
}
.btn-primary:hover {
  background-color: var(--color-primary-dark);
  border-color: var(--color-primary-dark);
  color: var(--color-surface);
  transform: translateY(-2px);
  box-shadow: var(--shadow-primary);
}

.btn-outline {
  background-color: transparent;
  color: var(--color-primary);
  border-color: var(--color-primary);
}
.btn-outline:hover {
  background-color: var(--color-primary);
  color: var(--color-surface);
  transform: translateY(-2px);
}

.btn-white {
  background-color: var(--color-surface);
  color: var(--color-primary);
  border-color: var(--color-surface);
}
.btn-white:hover {
  background-color: var(--color-bg);
  color: var(--color-primary-dark);
  transform: translateY(-2px);
}

.btn-lang {
  background-color: transparent;
  color: var(--color-text-muted);
  border-color: var(--color-border);
  padding: 0.35rem 0.65rem;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  min-width: auto;
}
.btn-lang:hover {
  background-color: var(--color-primary);
  color: var(--color-surface);
  border-color: var(--color-primary);
  transform: translateY(-1px);
}

/* === SECTIONS === */
.section {
  padding: var(--section-padding) 0;
}

.section-header {
  text-align: center;
  margin-bottom: 56px;
}

.section-title {
  margin-bottom: 12px;
}

.section-subtitle {
  color: var(--color-text-muted);
  font-size: 1.125rem;
  max-width: 600px;
  margin: 0 auto;
}

/* === BADGES === */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 4px 12px;
  border-radius: 100px;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.03em;
  line-height: 1.5;
}

.badge-popular {
  background-color: var(--color-secondary);
  color: var(--color-surface);
}

.badge-category {
  background-color: var(--color-bg);
  color: var(--color-text-muted);
  border: 1px solid var(--color-border);
}

/* === TAGS === */
.tag {
  display: inline-flex;
  align-items: center;
  padding: 4px 10px;
  background-color: rgba(37, 99, 235, 0.08);
  color: var(--color-primary);
  border-radius: 6px;
  font-size: 0.8rem;
  font-weight: 500;
}

/* === LUCIDE ICON DEFAULTS === */
[data-lucide] {
  width: 20px;
  height: 20px;
  stroke-width: 2;
  flex-shrink: 0;
  display: inline-block;
}

/* === DARK MODE VARIABLES === */
[data-theme="dark"] {
  --color-bg:           #0F172A;
  --color-surface:      #1E293B;
  --color-text:         #F1F5F9;
  --color-text-muted:   #94A3B8;
  --color-border:       #334155;
  --shadow-card:        0 4px 24px rgba(0, 0, 0, 0.35);
  --shadow-card-hover:  0 8px 32px rgba(0, 0, 0, 0.5);
  --shadow-primary:     0 4px 16px rgba(37, 99, 235, 0.45);
}

/* === DARK MODE TOGGLE BUTTON === */
.btn-theme-toggle {
  background-color: transparent;
  color: var(--color-text-muted);
  border-color: var(--color-border);
  padding: 0;
  width: 36px;
  height: 36px;
  min-width: auto;
}
.btn-theme-toggle:hover {
  background-color: var(--color-bg);
  color: var(--color-text);
  border-color: var(--color-primary);
  transform: translateY(-1px);
}
.btn-theme-toggle [data-lucide] {
  width: 16px;
  height: 16px;
}

/* === RESPONSIVE BASE === */
@media (max-width: 768px) {
  h1 { font-size: 2rem; }
  h2 { font-size: 1.5rem; }

  .section {
    padding: var(--section-padding-mobile) 0;
  }

  .section-header {
    margin-bottom: 36px;
  }

  .btn {
    width: 100%;
    justify-content: center;
  }

  .container {
    padding: 0 16px;
  }
}