/*
 * Genmetric Base Styles & Reset
 * ============================================================
 * Normalizes browser defaults, applies the design token system,
 * and defines utility classes used across all pages.
 *
 * @version   2.0.0
 * @package   Genmetric/Frontend
 */

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-family-base);
  font-size: var(--font-size-body);
  font-weight: var(--font-weight-regular);
  line-height: var(--line-height-normal);
  color: var(--color-text-primary);
  background-color: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* ----------------------------------------------------------
 * Typography base
 * ---------------------------------------------------------- */
h1, h2, h3, h4, h5, h6 {
  line-height: var(--line-height-tight);
  font-weight: var(--font-weight-bold);
  letter-spacing: -0.02em;
}

h1 { font-size: var(--font-size-h1); }
h2 { font-size: var(--font-size-h2); }
h3 { font-size: var(--font-size-h3); font-weight: var(--font-weight-semibold); }
h4 { font-size: var(--font-size-h4); font-weight: var(--font-weight-semibold); }
h5 { font-size: var(--font-size-h5); font-weight: var(--font-weight-medium); }

p {
  line-height: var(--line-height-normal);
  color: var(--color-text-secondary);
}

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

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

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

ul, ol { list-style: none; }

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

button { cursor: pointer; }

/* ----------------------------------------------------------
 * Layout utilities
 * ---------------------------------------------------------- */

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

/* Section spacing */
.section {
  padding-block: var(--space-8);
}

@media (min-width: 1024px) {
  .section {
    padding-block: var(--space-12);
  }
}

/* Grid system */
.grid {
  display: grid;
  gap: var(--grid-gap);
}

.grid-2 { grid-template-columns: 1fr; }
.grid-3 { grid-template-columns: 1fr; }
.grid-4 { grid-template-columns: 1fr; }

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

@media (min-width: 1024px) {
  .grid-3 { grid-template-columns: repeat(3, 1fr); }
  .grid-4 { grid-template-columns: repeat(4, 1fr); }
}

/* Flex utilities */
.flex         { display: flex; }
.flex-col     { flex-direction: column; }
.flex-wrap    { flex-wrap: wrap; }
.items-center { align-items: center; }
.items-start  { align-items: flex-start; }
.justify-between { justify-content: space-between; }
.justify-center  { justify-content: center; }
.gap-1  { gap: var(--space-1); }
.gap-2  { gap: var(--space-2); }
.gap-3  { gap: var(--space-3); }
.gap-4  { gap: var(--space-4); }

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

/* ----------------------------------------------------------
 * Buttons
 * ---------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-1);
  padding: 0.75rem 1.5rem;
  border-radius: var(--radius-md);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  line-height: 1;
  cursor: pointer;
  text-decoration: none;
  transition: transform var(--transition-base),
              box-shadow var(--transition-base),
              background var(--transition-base);
  white-space: nowrap;
  border: 2px solid transparent;
}

/* Primary */
.btn-primary {
  background: var(--gradient-primary);
  color: var(--color-text-inverse);
  box-shadow: 0 4px 16px var(--color-primary-glow);
}

.btn-primary:hover {
  transform: scale(1.03);
  box-shadow: var(--shadow-glow);
  color: var(--color-text-inverse);
}

/* Secondary (outlined) */
.btn-secondary {
  background: transparent;
  color: var(--color-primary);
  border-color: var(--color-primary);
}

.btn-secondary:hover {
  background: var(--color-primary-subtle);
  transform: scale(1.03);
  color: var(--color-primary);
}

/* Ghost outline for dark sections */
.btn-ghost-dark {
  background: transparent;
  color: rgba(255, 255, 255, 0.85);
  border: 2px solid rgba(255, 255, 255, 0.25);
}

.btn-ghost-dark:hover {
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(255, 255, 255, 0.45);
  color: #fff;
  transform: scale(1.03);
}

/* Ghost */
.btn-ghost {
  background: transparent;
  color: var(--color-text-secondary);
}

.btn-ghost:hover {
  color: var(--color-primary);
}

/* Size variants */
.btn-sm {
  padding: 0.5rem 1rem;
  font-size: var(--font-size-xs);
}

.btn-lg {
  padding: 1rem 2rem;
  font-size: var(--font-size-body);
  border-radius: var(--radius-lg);
}

/* Icon arrow suffix */
.btn .btn-arrow {
  transition: transform var(--transition-fast);
}
.btn:hover .btn-arrow {
  transform: translateX(3px);
}

/* ----------------------------------------------------------
 * Cards
 * ---------------------------------------------------------- */
.card {
  background: var(--color-bg);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  padding: var(--space-3);
  border: 1px solid var(--color-border-light);
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}

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

.card-surface {
  background: var(--color-bg-surface);
  border-color: var(--color-border);
}

/* ----------------------------------------------------------
 * Badges / tags
 * ---------------------------------------------------------- */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  padding: 0.25rem 0.75rem;
  border-radius: var(--radius-full);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-semibold);
  line-height: 1;
}

.badge-purple {
  background: var(--color-primary-subtle);
  color: var(--color-primary);
}

.badge-green {
  background: rgba(34, 197, 94, 0.12);
  color: var(--color-positive);
}

.badge-yellow {
  background: rgba(245, 158, 11, 0.12);
  color: var(--color-warning);
}

.badge-red {
  background: rgba(239, 68, 68, 0.12);
  color: var(--color-negative);
}

/* ----------------------------------------------------------
 * Section headers
 * ---------------------------------------------------------- */
.section-label {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-semibold);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-primary);
  margin-bottom: var(--space-2);
}

.section-label::before {
  content: '';
  display: block;
  width: 6px;
  height: 6px;
  border-radius: var(--radius-full);
  background: var(--gradient-primary);
}

/* Dark-bg variant of section label */
.section-label--dark {
  color: rgba(255, 255, 255, 0.6);
}

.section-label--dark::before {
  background: rgba(255, 255, 255, 0.5);
}

.section-heading {
  font-size: var(--font-size-h2);
  font-weight: var(--font-weight-bold);
  color: var(--color-text-primary);
  letter-spacing: -0.025em;
  margin-bottom: var(--space-2);
}

.section-subheading {
  font-size: var(--font-size-body);
  color: var(--color-text-secondary);
  max-width: 560px;
  line-height: var(--line-height-loose);
}

/* Centered variant */
.section-header-centered {
  text-align: center;
}

.section-header-centered .section-label {
  justify-content: center;
}

.section-header-centered .section-subheading {
  margin-inline: auto;
}

/* ----------------------------------------------------------
 * Feature icon boxes
 * ---------------------------------------------------------- */
.icon-box {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
  background: var(--color-primary-subtle);
  color: var(--color-primary);
  flex-shrink: 0;
}

.icon-box svg {
  width: 22px;
  height: 22px;
}

/* Dark bg icon box */
.icon-box--dark {
  background: rgba(87, 47, 172, 0.25);
  border: 1px solid rgba(122, 77, 255, 0.3);
}

/* ----------------------------------------------------------
 * Check list
 * ---------------------------------------------------------- */
.check-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.check-list li {
  display: flex;
  align-items: flex-start;
  gap: 0.625rem;
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
  line-height: var(--line-height-snug);
}

.check-list li::before {
  content: '';
  display: block;
  width: 18px;
  height: 18px;
  border-radius: var(--radius-full);
  background: var(--color-positive);
  flex-shrink: 0;
  margin-top: 1px;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 12 12' fill='none'%3E%3Cpath d='M2.5 6l2.5 2.5 4.5-5' stroke='white' stroke-width='1.5' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: center;
  background-size: 12px;
}

/* ----------------------------------------------------------
 * Progress bar
 * ---------------------------------------------------------- */
.progress-bar {
  height: 6px;
  background: var(--color-border-light);
  border-radius: var(--radius-full);
  overflow: hidden;
}

.progress-bar__fill {
  height: 100%;
  border-radius: var(--radius-full);
  background: var(--gradient-primary);
  transition: width 1.2s cubic-bezier(0.16, 1, 0.3, 1);
  width: 0%; /* animated by JS on viewport entry */
}

/* ----------------------------------------------------------
 * Divider
 * ---------------------------------------------------------- */
.divider {
  border: none;
  border-top: 1px solid var(--color-border);
  margin-block: var(--space-6);
}

/* ----------------------------------------------------------
 * Animations (entrance -- triggered by JS IntersectionObserver)
 * ---------------------------------------------------------- */
[data-animate] {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity var(--transition-slow), transform var(--transition-slow);
}

[data-animate="fade"] {
  transform: none;
}

[data-animate="left"] {
  transform: translateX(-28px);
}

[data-animate="right"] {
  transform: translateX(28px);
}

[data-animate="scale"] {
  transform: scale(0.95);
}

[data-animate].is-visible {
  opacity: 1;
  transform: none;
}

/* Staggered delay helpers */
[data-delay="100"] { transition-delay: 100ms; }
[data-delay="150"] { transition-delay: 150ms; }
[data-delay="200"] { transition-delay: 200ms; }
[data-delay="250"] { transition-delay: 250ms; }
[data-delay="300"] { transition-delay: 300ms; }
[data-delay="400"] { transition-delay: 400ms; }
[data-delay="500"] { transition-delay: 500ms; }

/* ----------------------------------------------------------
 * Utility helpers
 * ---------------------------------------------------------- */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border-width: 0;
}

.relative { position: relative; }
.overflow-hidden { overflow: hidden; }

.text-primary-color { color: var(--color-primary); }
.text-muted   { color: var(--color-text-muted); }
.text-sm      { font-size: var(--font-size-sm); }
.text-xs      { font-size: var(--font-size-xs); }
.fw-semibold  { font-weight: var(--font-weight-semibold); }
.fw-bold      { font-weight: var(--font-weight-bold); }

.mt-1 { margin-top: var(--space-1); }
.mt-2 { margin-top: var(--space-2); }
.mt-3 { margin-top: var(--space-3); }
.mt-4 { margin-top: var(--space-4); }
.mb-2 { margin-bottom: var(--space-2); }
.mb-3 { margin-bottom: var(--space-3); }
.mb-4 { margin-bottom: var(--space-4); }

.w-full   { width: 100%; }
.h-full   { height: 100%; }
.mx-auto  { margin-inline: auto; }

/* ----------------------------------------------------------
 * Focus ring -- accessibility
 * ---------------------------------------------------------- */
:focus-visible {
  outline: 3px solid var(--color-primary);
  outline-offset: 3px;
  border-radius: 4px;
}

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