/* ============================================================
   VAPE CULTURE — MAIN CSS
   Design tokens, reset, typography, layout utilities
   ============================================================ */

/* Font is loaded via <link> in each HTML document — no @import needed */

/* ============================================================
   1. DESIGN TOKENS
   ============================================================ */
:root {
  /* Backgrounds */
  --bg-base:          #000000;
  --bg-surface:       #0A0A0A;
  --bg-raised:        #111111;
  --bg-glass:         rgba(255,255,255,0.04);
  --bg-glass-hover:   rgba(255,255,255,0.07);
  --bg-overlay:       rgba(0,0,0,0.80);

  /* Borders */
  --border-subtle:    rgba(255,255,255,0.06);
  --border-default:   rgba(255,255,255,0.10);
  --border-strong:    rgba(255,255,255,0.18);
  --border-accent:    rgba(0,102,255,0.50);

  /* Text */
  --text-primary:     #FFFFFF;
  --text-secondary:   rgba(255,255,255,0.60);
  --text-tertiary:    rgba(255,255,255,0.35);
  --text-disabled:    rgba(255,255,255,0.20);
  --text-accent:      #3385FF;

  /* Accent (Electric Blue) */
  --accent:           #0066FF;
  --accent-light:     #3385FF;
  --accent-dim:       #0044CC;
  --accent-glow:      rgba(0,102,255,0.25);
  --accent-glow-lg:   rgba(0,102,255,0.12);

  /* Status */
  --success:          #00D4AA;
  --warning:          #F5A623;
  --error:            #FF3B30;
  --whatsapp:         #25D366;
  --whatsapp-dark:    #1da851;

  /* Gradients */
  --grad-accent:      linear-gradient(135deg, #0066FF 0%, #0044CC 100%);
  --grad-glass:       linear-gradient(145deg, rgba(255,255,255,0.05) 0%, rgba(255,255,255,0.01) 100%);

  /* Shadows */
  --shadow-sm:        0 1px 3px rgba(0,0,0,0.4);
  --shadow-md:        0 4px 16px rgba(0,0,0,0.5);
  --shadow-lg:        0 8px 32px rgba(0,0,0,0.6);
  --shadow-xl:        0 20px 60px rgba(0,0,0,0.7);
  --shadow-accent:    0 0 40px rgba(0,102,255,0.20), 0 0 80px rgba(0,102,255,0.08);
  --shadow-card:      0 1px 1px rgba(255,255,255,0.03) inset, 0 8px 32px rgba(0,0,0,0.5);
  --shadow-whatsapp:  0 4px 20px rgba(37,211,102,0.30);

  /* Border Radii */
  --radius-xs:        4px;
  --radius-sm:        8px;
  --radius-md:        12px;
  --radius-lg:        16px;
  --radius-xl:        24px;
  --radius-2xl:       32px;
  --radius-full:      9999px;

  /* Blur */
  --blur-sm:          blur(8px);
  --blur-md:          blur(16px);
  --blur-lg:          blur(24px);
  --blur-xl:          blur(40px);

  /* Spacing */
  --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;

  /* Transitions */
  --ease-smooth:  cubic-bezier(0.4, 0, 0.2, 1);
  --ease-spring:  cubic-bezier(0.34, 1.56, 0.64, 1);
  --ease-out:     cubic-bezier(0, 0, 0.2, 1);
  --dur-fast:     150ms;
  --dur-base:     250ms;
  --dur-slow:     400ms;
  --dur-glacial:  700ms;

  /* Typography */
  --font:         'DM Sans', -apple-system, BlinkMacSystemFont, system-ui, sans-serif;

  /* Navbar height */
  --nav-height:   72px;
}

/* ============================================================
   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: var(--font);
  background-color: var(--bg-base);
  color: var(--text-primary);
  line-height: 1.6;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

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

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

button {
  font-family: var(--font);
  cursor: pointer;
  border: none;
  background: none;
}

input, textarea, select {
  font-family: var(--font);
}

ul, ol {
  list-style: none;
}

h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.02em;
}

::selection {
  background: var(--accent);
  color: white;
}

/* ============================================================
   3. TYPOGRAPHY SCALE
   ============================================================ */
.text-display {
  font-size: clamp(2.5rem, 7vw, 5rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.05;
}

.text-h1 {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 700;
  letter-spacing: -0.025em;
}

.text-h2 {
  font-size: clamp(1.5rem, 3vw, 2.25rem);
  font-weight: 700;
  letter-spacing: -0.02em;
}

.text-h3 {
  font-size: clamp(1.125rem, 2vw, 1.5rem);
  font-weight: 600;
  letter-spacing: -0.015em;
}

.text-h4 {
  font-size: 1.125rem;
  font-weight: 600;
}

.text-body-lg {
  font-size: 1.125rem;
  line-height: 1.7;
}

.text-body {
  font-size: 1rem;
  line-height: 1.6;
}

.text-sm {
  font-size: 0.875rem;
  line-height: 1.5;
}

.text-xs {
  font-size: 0.75rem;
  line-height: 1.4;
}

.text-label {
  font-size: 0.6875rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

/* Color utilities */
.text-primary   { color: var(--text-primary); }
.text-secondary { color: var(--text-secondary); }
.text-tertiary  { color: var(--text-tertiary); }
.text-accent    { color: var(--accent); }
.text-success   { color: var(--success); }
.text-warning   { color: var(--warning); }
.text-error     { color: var(--error); }

/* ============================================================
   4. LAYOUT UTILITIES
   ============================================================ */
.container {
  width: 100%;
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 var(--space-5);
}

@media (min-width: 768px) {
  .container { padding: 0 var(--space-8); }
}

@media (min-width: 1024px) {
  .container { padding: 0 var(--space-16); }
}

.section {
  padding: var(--space-12) 0;
}

@media (min-width: 768px) {
  .section { padding: var(--space-16) 0; }
}

@media (min-width: 1024px) {
  .section { padding: var(--space-24) 0; }
}

.flex { display: flex; }
.flex-col { flex-direction: column; }
.items-center { align-items: center; }
.items-start { align-items: flex-start; }
.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }
.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); }

.grid-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-4);
}

.grid-3 {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-4);
}

@media (min-width: 768px) {
  .grid-3 { grid-template-columns: 1fr 1fr; }
}

@media (min-width: 1024px) {
  .grid-3 { grid-template-columns: 1fr 1fr 1fr; gap: var(--space-6); }
}

.grid-4 {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-4);
}

@media (min-width: 640px) {
  .grid-4 { grid-template-columns: 1fr 1fr; }
}

@media (min-width: 1024px) {
  .grid-4 { grid-template-columns: 1fr 1fr 1fr 1fr; gap: var(--space-6); }
}

/* ============================================================
   5. KEYFRAME ANIMATIONS
   ============================================================ */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(24px); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes fadeIn {
  from { opacity: 0; }
  to   { opacity: 1; }
}

@keyframes scaleIn {
  from { opacity: 0; transform: scale(0.94); }
  to   { opacity: 1; transform: scale(1); }
}

@keyframes slideDown {
  from { transform: translateY(-100%); }
  to   { transform: translateY(0); }
}

@keyframes slideUp {
  from { opacity: 0; transform: translateY(100%); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes slideRight {
  from { transform: translateX(100%); }
  to   { transform: translateX(0); }
}

@keyframes slideLeft {
  from { transform: translateX(-100%); }
  to   { transform: translateX(0); }
}

@keyframes pulseRing {
  0%   { transform: scale(1); opacity: 0.8; }
  100% { transform: scale(1.7); opacity: 0; }
}

@keyframes bounce {
  0%, 100% { transform: translateY(0); }
  50%       { transform: translateY(-6px); }
}

@keyframes shimmer {
  0%   { background-position: -200% 0; }
  100% { background-position:  200% 0; }
}

@keyframes rotate {
  from { transform: rotate(0deg); }
  to   { transform: rotate(360deg); }
}

@keyframes heartBeat {
  0%   { transform: scale(1); }
  25%  { transform: scale(1.3); }
  50%  { transform: scale(1); }
  75%  { transform: scale(1.15); }
  100% { transform: scale(1); }
}

/* Animation classes */
.anim-fade-up   { animation: fadeUp var(--dur-slow) var(--ease-out) both; }
.anim-fade-in   { animation: fadeIn var(--dur-base) var(--ease-out) both; }
.anim-scale-in  { animation: scaleIn var(--dur-slow) var(--ease-spring) both; }

/* Scroll reveal — hidden until JS adds .revealed */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity var(--dur-slow) var(--ease-out),
              transform var(--dur-slow) var(--ease-out);
}

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

/* Stagger delays for child reveals */
.reveal-stagger > *:nth-child(1) { transition-delay: 0ms; }
.reveal-stagger > *:nth-child(2) { transition-delay: 70ms; }
.reveal-stagger > *:nth-child(3) { transition-delay: 140ms; }
.reveal-stagger > *:nth-child(4) { transition-delay: 210ms; }
.reveal-stagger > *:nth-child(5) { transition-delay: 280ms; }
.reveal-stagger > *:nth-child(6) { transition-delay: 350ms; }
.reveal-stagger > *:nth-child(7) { transition-delay: 420ms; }
.reveal-stagger > *:nth-child(8) { transition-delay: 490ms; }

/* ============================================================
   6. SCROLL BAR
   ============================================================ */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: var(--bg-surface); }
::-webkit-scrollbar-thumb { background: rgba(255,255,255,0.15); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: rgba(255,255,255,0.25); }

/* ============================================================
   7. REDUCED MOTION
   ============================================================ */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

/* ============================================================
   8. FOCUS STYLES
   ============================================================ */
:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
  border-radius: var(--radius-xs);
}

/* ============================================================
   9. SKELETON LOADING
   ============================================================ */
.skeleton {
  background: linear-gradient(
    90deg,
    var(--bg-raised) 0%,
    rgba(255,255,255,0.04) 50%,
    var(--bg-raised) 100%
  );
  background-size: 200% 100%;
  animation: shimmer 1.8s infinite;
  border-radius: var(--radius-sm);
}

/* ============================================================
   10. PAGE HEADER (shared across content pages)
   ============================================================ */
.page-header {
  padding: calc(var(--nav-height) + var(--space-12)) 0 var(--space-12);
  border-bottom: 1px solid var(--border-subtle);
}

.page-header .breadcrumb {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  margin-bottom: var(--space-4);
  font-size: 0.8125rem;
  color: var(--text-tertiary);
}

.page-header .breadcrumb a:hover { color: var(--text-secondary); }
.page-header .breadcrumb .sep { opacity: 0.4; }

.page-header h1 {
  font-size: clamp(1.75rem, 4vw, 3rem);
  font-weight: 700;
  letter-spacing: -0.025em;
}

.page-header p {
  margin-top: var(--space-3);
  font-size: 1.0625rem;
  color: var(--text-secondary);
  max-width: 560px;
}