/* ============================================
   IEFYX BASE STYLES & RESET
   ============================================ */

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

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

body {
  font-family: var(--font-body);
  font-size: var(--fs-body);
  line-height: var(--lh-normal);
  color: var(--color-text);
  background: var(--color-bg);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

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

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

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

ul, ol {
  list-style: none;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  font-weight: 600;
  line-height: var(--lh-tight);
  letter-spacing: -0.02em;
  color: var(--color-text);
}

h1 { font-size: var(--fs-display-xl); }
h2 { font-size: var(--fs-display-lg); }
h3 { font-size: var(--fs-display-md); }
h4 { font-size: var(--fs-display-sm); }

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

:focus-visible {
  outline: 2px solid var(--color-primary-light);
  outline-offset: 3px;
  border-radius: 4px;
}

::selection {
  background: var(--color-primary);
  color: #fff;
}

/* ---- Layout ---- */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--space-6);
}

@media (max-width: 768px) {
  .container { padding: 0 var(--space-5); }
}

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

@media (max-width: 768px) {
  .section { padding: var(--space-12) 0; }
}

.section-head {
  max-width: 680px;
  margin: 0 auto var(--space-10);
  text-align: center;
}

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

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-mono);
  font-size: var(--fs-caption);
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-primary-light);
  margin-bottom: var(--space-4);
}

.eyebrow::before {
  content: '';
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-lime);
  box-shadow: 0 0 12px var(--color-lime);
  flex-shrink: 0;
}

.section-head h2 {
  margin-bottom: var(--space-4);
}

.section-head p {
  font-size: var(--fs-body-lg);
  line-height: var(--lh-relaxed);
}

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

.text-accent {
  color: var(--color-primary-light);
}

/* ---- Buttons ---- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  font-family: var(--font-body);
  font-size: var(--fs-body-sm);
  font-weight: 600;
  padding: 0.9rem 1.75rem;
  border-radius: var(--radius-full);
  transition: var(--transition-base);
  white-space: nowrap;
  letter-spacing: -0.01em;
}

.btn-primary {
  background: var(--gradient-primary);
  color: #fff;
  box-shadow: var(--shadow-glow);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-glow-lg);
}

.btn-ghost {
  background: var(--color-glass);
  border: 1px solid var(--color-glass-border);
  color: var(--color-text);
  backdrop-filter: var(--blur-glass);
}

.btn-ghost:hover {
  background: var(--color-glass-hover);
  border-color: rgba(255, 255, 255, 0.16);
  transform: translateY(-2px);
}

.btn-text {
  color: var(--color-text);
  font-weight: 600;
  font-size: var(--fs-body-sm);
  padding: 0.5rem 0;
  border-bottom: 1px solid transparent;
  border-radius: 0;
}

.btn-text:hover {
  border-color: var(--color-primary-light);
  color: var(--color-primary-light);
}

.btn-lg {
  padding: 1.05rem 2.25rem;
  font-size: var(--fs-body);
}

.btn-sm {
  padding: 0.6rem 1.25rem;
  font-size: var(--fs-caption);
}

.btn-icon {
  width: 1em;
  height: 1em;
  flex-shrink: 0;
  transition: transform var(--transition-fast);
}

.btn:hover .btn-icon {
  transform: translateX(3px);
}

/* ---- Glass panel ---- */
.glass {
  background: var(--color-glass);
  border: 1px solid var(--color-glass-border);
  backdrop-filter: var(--blur-glass);
  -webkit-backdrop-filter: var(--blur-glass);
  border-radius: var(--radius-xl);
}

/* ---- Background glows ---- */
.bg-glow {
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  overflow: hidden;
}

.bg-glow::before {
  content: '';
  position: absolute;
  width: 60vw;
  height: 60vw;
  max-width: 900px;
  max-height: 900px;
  background: var(--gradient-glow-soft);
  border-radius: 50%;
  top: -20%;
  left: 50%;
  transform: translateX(-50%);
  filter: blur(60px);
}

/* ---- Grid helpers ---- */
.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); }

@media (max-width: 992px) {
  .grid-3, .grid-4 { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 640px) {
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
}

/* ---- Visually hidden ---- */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
}

/* ---- Skip link ---- */
.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--color-primary);
  color: #fff;
  padding: var(--space-2) var(--space-4);
  z-index: 9999;
  border-radius: var(--radius-sm);
}

.skip-link:focus {
  left: var(--space-4);
  top: var(--space-4);
}