/* ============================================================
   SMART WEB DESIGN — Base Styles (Reset + Typography + Utilities)
   ============================================================ */

/* --- Modern CSS Reset --- */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

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

body {
  font-family: var(--font-body);
  font-size: var(--text-base);
  line-height: 1.7;
  color: var(--color-text-primary);
  background-color: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

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

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

ul, ol {
  list-style: none;
}

button, input, textarea, select {
  font: inherit;
  border: none;
  outline: none;
  background: none;
}

button { cursor: pointer; }

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.2;
  color: var(--color-text-primary);
}

/* --- Skip to content (accessibility) --- */
.skip-link {
  position: absolute;
  top: -100%;
  left: var(--space-4);
  background: var(--color-accent);
  color: #000;
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: var(--text-sm);
  z-index: var(--z-toast);
  transition: top var(--ease-fast);
}
.skip-link:focus { top: var(--space-4); }

/* --- Container --- */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--section-pad-x);
}

.container--narrow {
  max-width: 900px;
}

/* --- Section --- */
.section {
  padding-block: var(--section-pad-y);
}

.section--alt {
  background-color: var(--color-surface-1);
}

.section--dark {
  background-color: var(--color-surface-2);
}

/* --- Section header --- */
.section-header {
  max-width: 680px;
  margin-inline: auto;
  text-align: center;
  margin-bottom: var(--space-16);
}

.section-header--left {
  margin-inline: 0;
  text-align: left;
}

.section-label {
  display: inline-block;
  font-size: var(--text-sm);
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  background: var(--gradient-accent);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: var(--space-4);
}

.section-title {
  font-size: var(--text-4xl);
  font-weight: 800;
  line-height: 1.15;
  margin-bottom: var(--space-5);
  color: var(--color-text-primary);
}

.section-title .accent {
  background: var(--gradient-text);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

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

/* --- Gradient text utility --- */
.gradient-text {
  background: var(--gradient-text);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* --- Grid utilities --- */
.grid {
  display: grid;
  gap: var(--space-8);
}

.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--auto-3 { grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); }
.grid--auto-4 { grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); }

/* --- Flex utilities --- */
.flex { display: flex; }
.flex-center { display: flex; align-items: center; justify-content: center; }
.flex-between { display: flex; align-items: center; justify-content: space-between; }
.gap-2 { gap: var(--space-2); }
.gap-4 { gap: var(--space-4); }
.gap-6 { gap: var(--space-6); }
.gap-8 { gap: var(--space-8); }

/* --- 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 style for keyboard navigation */
:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 3px;
  border-radius: var(--radius-sm);
}

/* --- Divider --- */
.divider {
  width: 60px;
  height: 3px;
  background: var(--gradient-accent);
  border-radius: var(--radius-full);
  margin-inline: auto;
  margin-bottom: var(--space-6);
}

.divider--left { margin-inline: 0; }

/* --- Badge --- */
.badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-4);
  background: var(--color-accent-dim);
  border: 1px solid var(--color-border-accent);
  border-radius: var(--radius-full);
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-accent);
  letter-spacing: 0.02em;
}

/* --- Animate on scroll (initial hidden state — GSAP will reveal) --- */
.anim-fade-up {
  opacity: 0;
  transform: translateY(40px);
}

.anim-fade-in {
  opacity: 0;
}

/* --- WhatsApp Float Button --- */
.whatsapp-float {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  z-index: var(--z-sticky);
  display: flex;
  align-items: center;
  gap: var(--space-2);
  background: #25D366;
  color: #fff;
  padding: 0.875rem 1.25rem;
  border-radius: var(--radius-full);
  font-size: var(--text-sm);
  font-weight: 600;
  box-shadow: 0 8px 30px rgba(37, 211, 102, 0.35);
  transition: transform var(--ease-bounce), box-shadow var(--ease-base);
}

.whatsapp-float:hover {
  transform: scale(1.06) translateY(-2px);
  box-shadow: 0 12px 40px rgba(37, 211, 102, 0.5);
}

.whatsapp-float i {
  font-size: 1.4rem;
}

@media (max-width: 640px) {
  .whatsapp-float__label { display: none; }
  .whatsapp-float { padding: 0.875rem; border-radius: 50%; }
}

/* --- Page hero (inner pages) --- */
.page-hero {
  padding-top: calc(var(--section-pad-y) + 6rem);
  padding-bottom: var(--section-pad-y);
  text-align: center;
  background: var(--gradient-hero);
  position: relative;
  overflow: hidden;
}

.page-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle 800px at 50% 50%, rgba(0,212,255,0.05), transparent 70%);
  pointer-events: none;
}

.page-hero__label {
  display: inline-block;
  font-size: var(--text-sm);
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: var(--space-5);
}

.page-hero__title {
  font-size: var(--text-5xl);
  font-weight: 800;
  line-height: 1.15;
  max-width: 700px;
  margin-inline: auto;
  margin-bottom: var(--space-6);
}

.page-hero__subtitle {
  font-size: var(--text-lg);
  color: var(--color-text-secondary);
  max-width: 560px;
  margin-inline: auto;
}

/* --- CTA Banner --- */
.cta-banner {
  padding-block: var(--section-pad-y);
  background: linear-gradient(135deg, #0d0d20 0%, #151520 50%, #0d0d20 100%);
  position: relative;
  overflow: hidden;
  text-align: center;
}

.cta-banner::before {
  content: '';
  position: absolute;
  top: -50%;
  left: 50%;
  transform: translateX(-50%);
  width: 900px;
  height: 500px;
  background: radial-gradient(ellipse, rgba(0,212,255,0.08) 0%, rgba(124,58,237,0.06) 50%, transparent 70%);
  pointer-events: none;
}

.cta-banner__title {
  font-size: var(--text-4xl);
  font-weight: 800;
  margin-bottom: var(--space-5);
  max-width: 600px;
  margin-inline: auto;
}

.cta-banner__subtitle {
  font-size: var(--text-lg);
  color: var(--color-text-secondary);
  margin-bottom: var(--space-10);
  max-width: 520px;
  margin-inline: auto;
}

.cta-banner__actions {
  display: flex;
  gap: var(--space-4);
  justify-content: center;
  flex-wrap: wrap;
}

/* --- Responsive breakpoints --- */
@media (max-width: 1024px) {
  .grid--4 { grid-template-columns: repeat(2, 1fr); }
  .grid--3 { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  .grid--3,
  .grid--2 { grid-template-columns: 1fr; }
  .section-title { font-size: var(--text-3xl); }
}

@media (max-width: 640px) {
  .grid--4 { grid-template-columns: 1fr; }
  .page-hero__title { font-size: var(--text-4xl); }
}

/* --- Body scroll lock (mobile menu open) --- */
body.menu-open {
  overflow: hidden;
}

/* --- Breadcrumb --- */
.breadcrumb {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  margin-top: var(--space-6);
}
.breadcrumb a {
  color: var(--color-text-muted);
  transition: color var(--ease-fast);
}
.breadcrumb a:hover { color: var(--color-accent); }
.breadcrumb i { font-size: 0.75rem; }
.breadcrumb span { color: var(--color-text-secondary); }

/* --- Safe animation fallback: if JS/GSAP doesn't run, show content --- */
/* JS adds .js-loaded to <body> — only hide elements when JS is present */
body:not(.js-loaded) .anim-fade-up,
body:not(.js-loaded) .anim-fade-in {
  opacity: 1 !important;
  transform: none !important;
}

/* --- Page hero content wrapper --- */
.page-hero__content {
  position: relative;
  z-index: 1;
}

/* --- Utility: text align --- */
.text-center { text-align: center; }
.text-left   { text-align: left; }

/* --- Comparison table wrapper --- */
.comparison-table-wrap {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  border-radius: var(--radius-xl);
  border: 1px solid var(--color-border);
}

/* --- Trust strip --- */
.trust-strip {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-8);
  flex-wrap: wrap;
  padding: var(--space-8) var(--space-6);
  background: var(--color-surface-1);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-2xl);
}
.trust-item {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-text-secondary);
}
.trust-item i { color: var(--color-accent); font-size: 1.1rem; }