/* ============================================================
   PLIX Design System — plix.css
   Brand: plix.com.mx | Version 3.0.0 | 2026
   Pure vanilla CSS — no frameworks
   ============================================================ */

/* ── 1. CUSTOM PROPERTIES ─────────────────────────────────── */
:root {
  /* Brand Colors */
  --color-primary:    #197fe6;
  --color-primary-dk: #1265c0;
  --color-primary-lt: #3a9ef8;
  --color-navy:       #0a1628;
  --color-navy-2:     #0d1f3c;
  --color-navy-3:     #112244;
  --color-cyan:       #00d4ff;
  --color-green:      #10b981;
  --color-surface:    #f6f8fc;
  --color-white:      #ffffff;

  /* Text */
  --text-primary:   #0f172a;
  --text-secondary: #475569;
  --text-muted:     #94a3b8;
  --text-on-dark:   #e2e8f0;
  --text-on-dark-2: #94a3b8;

  /* Borders */
  --border-light:   rgba(0,0,0,0.07);
  --border-primary: rgba(25,127,230,0.25);
  --border-dark:    rgba(255,255,255,0.08);

  /* Shadows */
  --shadow-sm:  0 1px 3px rgba(0,0,0,0.06), 0 1px 2px rgba(0,0,0,0.04);
  --shadow-md:  0 4px 16px rgba(0,0,0,0.08), 0 2px 6px rgba(0,0,0,0.04);
  --shadow-lg:  0 10px 40px rgba(0,0,0,0.10), 0 4px 12px rgba(0,0,0,0.06);
  --shadow-xl:  0 24px 64px rgba(0,0,0,0.14), 0 8px 24px rgba(0,0,0,0.08);
  --shadow-primary: 0 8px 32px rgba(25,127,230,0.30);
  --shadow-cyan:    0 8px 32px rgba(0,212,255,0.25);

  /* Glassmorphism */
  --glass-bg:      rgba(255,255,255,0.06);
  --glass-bg-lt:   rgba(255,255,255,0.85);
  --glass-border:  rgba(255,255,255,0.12);
  --glass-blur:    blur(16px);

  /* Spacing scale */
  --space-1:  4px;
  --space-2:  8px;
  --space-3:  12px;
  --space-4:  16px;
  --space-5:  20px;
  --space-6:  24px;
  --space-8:  32px;
  --space-10: 40px;
  --space-12: 48px;
  --space-16: 64px;
  --space-20: 80px;
  --space-24: 96px;

  /* Typography scale */
  --text-xs:   0.75rem;
  --text-sm:   0.875rem;
  --text-base: 1rem;
  --text-lg:   1.125rem;
  --text-xl:   1.25rem;
  --text-2xl:  1.5rem;
  --text-3xl:  1.875rem;
  --text-4xl:  2.25rem;
  --text-5xl:  3rem;
  --text-6xl:  3.75rem;
  --text-7xl:  4.5rem;

  /* Radius */
  --radius-sm:  6px;
  --radius-md:  12px;
  --radius-lg:  16px;
  --radius-xl:  24px;
  --radius-2xl: 32px;
  --radius-full: 9999px;

  /* Transitions */
  --transition-fast: 0.15s ease;
  --transition-base: 0.25s ease;
  --transition-slow: 0.4s ease;
  --transition-spring: 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
}

/* ── 2. RESET & BASE ──────────────────────────────────────── */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

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

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  font-size: var(--text-base);
  line-height: 1.6;
  color: var(--text-primary);
  background-color: var(--color-white);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

img, video { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }
button { cursor: pointer; font-family: inherit; }
input, textarea, select { font-family: inherit; }

/* ── 3. UTILITIES ─────────────────────────────────────────── */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-6);
}

@media (max-width: 768px) {
  .container { padding: 0 var(--space-4); }
}

.sr-only {
  position: absolute;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0,0,0,0);
  border: 0;
}

/* ── 4. TYPOGRAPHY ────────────────────────────────────────── */
.section-label {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-primary);
  background: rgba(25,127,230,0.08);
  border: 1px solid rgba(25,127,230,0.2);
  padding: 5px 14px;
  border-radius: var(--radius-full);
  margin-bottom: var(--space-4);
}

.section-label.on-dark {
  color: var(--color-cyan);
  background: rgba(0,212,255,0.08);
  border-color: rgba(0,212,255,0.2);
}

.section-title {
  font-size: clamp(var(--text-3xl), 4vw, var(--text-5xl));
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.02em;
  color: var(--text-primary);
  margin-bottom: var(--space-4);
}

.section-title.on-dark { color: var(--color-white); }

.section-subtitle {
  font-size: var(--text-lg);
  color: var(--text-secondary);
  line-height: 1.7;
  max-width: 640px;
}

.section-subtitle.on-dark { color: var(--text-on-dark-2); }

/* ── 5. BUTTONS ───────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  font-weight: 700;
  font-size: var(--text-sm);
  padding: 13px 28px;
  border-radius: var(--radius-md);
  border: 2px solid transparent;
  transition: all var(--transition-base);
  cursor: pointer;
  white-space: nowrap;
  position: relative;
  overflow: hidden;
  text-decoration: none;
  letter-spacing: -0.01em;
}

.btn::after {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(255,255,255,0.0);
  transition: background var(--transition-fast);
}

.btn:hover::after { background: rgba(255,255,255,0.12); }
.btn:active { transform: scale(0.98); }

.btn-primary {
  background: var(--color-primary);
  color: var(--color-white);
  border-color: var(--color-primary);
  box-shadow: var(--shadow-primary);
}

.btn-primary:hover {
  background: var(--color-primary-lt);
  border-color: var(--color-primary-lt);
  transform: translateY(-2px);
  box-shadow: 0 12px 40px rgba(25,127,230,0.40);
}

.btn-ghost-white {
  background: transparent;
  color: var(--color-white);
  border-color: rgba(255,255,255,0.35);
}

.btn-ghost-white:hover {
  background: rgba(255,255,255,0.1);
  border-color: rgba(255,255,255,0.7);
  transform: translateY(-2px);
}

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

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

.btn-lg {
  padding: 16px 36px;
  font-size: var(--text-base);
  border-radius: var(--radius-lg);
}

.btn-sm {
  padding: 8px 18px;
  font-size: var(--text-xs);
  border-radius: var(--radius-sm);
}

/* ── 6. CARDS ─────────────────────────────────────────────── */
.card {
  background: var(--color-white);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-light);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-base);
}

.card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
  border-color: var(--border-primary);
}

.glass-card-dark {
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  transition: all var(--transition-base);
}

.glass-card-dark:hover {
  background: rgba(255,255,255,0.09);
  border-color: rgba(255,255,255,0.18);
  transform: translateY(-4px);
  box-shadow: 0 16px 48px rgba(0,0,0,0.3);
}

/* ── 7. BADGES ────────────────────────────────────────────── */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 3px 10px;
  border-radius: var(--radius-full);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.badge-blue   { background: rgba(25,127,230,0.1);  color: var(--color-primary); }
.badge-green  { background: rgba(16,185,129,0.1);  color: var(--color-green);   }
.badge-cyan   { background: rgba(0,212,255,0.1);   color: #00b4d8;              }
.badge-purple { background: rgba(139,92,246,0.1);  color: #8b5cf6;              }
.badge-orange { background: rgba(251,146,60,0.1);  color: #f97316;              }
.badge-pink   { background: rgba(236,72,153,0.1);  color: #ec4899;              }
.badge-teal   { background: rgba(20,184,166,0.1);  color: #14b8a6;              }

/* ── 8. REVEAL ANIMATIONS ─────────────────────────────────── */
.reveal {
  opacity: 0;
  transform: translateY(32px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }
.reveal-delay-4 { transition-delay: 0.4s; }
.reveal-delay-5 { transition-delay: 0.5s; }
.reveal-delay-6 { transition-delay: 0.6s; }

/* ── 9. SECTION WRAPPERS ──────────────────────────────────── */
.section {
  padding: var(--space-24) 0;
}

.section-sm {
  padding: var(--space-16) 0;
}

.section-dark {
  background: var(--color-navy);
}

.section-surface {
  background: var(--color-surface);
}

/* ── 10. FORM ELEMENTS ────────────────────────────────────── */
.form-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.form-label {
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--text-primary);
}

.form-input,
.form-textarea {
  width: 100%;
  padding: 12px 16px;
  border: 1.5px solid #e2e8f0;
  border-radius: var(--radius-md);
  font-size: var(--text-sm);
  font-family: 'Inter', sans-serif;
  color: var(--text-primary);
  background: var(--color-white);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
  outline: none;
  -webkit-appearance: none;
}

.form-input:focus,
.form-textarea:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(25,127,230,0.12);
}

.form-input::placeholder,
.form-textarea::placeholder {
  color: var(--text-muted);
}

.form-textarea {
  resize: vertical;
  min-height: 120px;
}

/* ── 11. GRADIENTS ────────────────────────────────────────── */
.gradient-text {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-cyan) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.gradient-bg-primary {
  background: linear-gradient(135deg, var(--color-primary) 0%, #0d4fa8 100%);
}

.gradient-bg-navy {
  background: linear-gradient(160deg, var(--color-navy) 0%, #0d1f3c 50%, #091525 100%);
}

/* ── 12. DIVIDER ──────────────────────────────────────────── */
.divider {
  width: 48px;
  height: 3px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-cyan));
  border-radius: var(--radius-full);
  margin: var(--space-4) 0;
}

/* ── 13. ICON CIRCLE ──────────────────────────────────────── */
.icon-circle {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  font-size: 22px;
}

.icon-circle-lg {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  font-size: 28px;
}

/* ── 14. SCROLL INDICATOR ─────────────────────────────────── */
@keyframes scrollBounce {
  0%, 100% { transform: translateY(0); opacity: 0.7; }
  50% { transform: translateY(8px); opacity: 1; }
}

.scroll-indicator {
  animation: scrollBounce 2s ease-in-out infinite;
}

/* ── 15. MOBILE ───────────────────────────────────────────── */
@media (max-width: 640px) {
  .section { padding: var(--space-16) 0; }
  .section-sm { padding: var(--space-10) 0; }
  .section-title { font-size: var(--text-3xl); }
  .btn-lg { padding: 14px 24px; font-size: var(--text-sm); }
}