/* ============================================
   NEXCORE NETWORK — Base Stylesheet
   ============================================ */

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

html {
  -webkit-text-size-adjust: none;
  text-size-adjust: none;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  scroll-behavior: smooth;
  hanging-punctuation: first last;
  scroll-padding-top: var(--space-20);
}

body {
  min-height: 100dvh;
  line-height: 1.65;
  font-family: var(--font-body, sans-serif);
  font-size: var(--text-base);
  color: var(--color-text);
  background-color: var(--color-bg);
}

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

ul[role='list'], ol[role='list'] { list-style: none; }

input, button, textarea, select {
  font: inherit;
  color: inherit;
}

h1, h2, h3, h4, h5, h6 {
  text-wrap: balance;
  line-height: 1.15;
  font-family: var(--font-display, serif);
}

p, li, figcaption {
  text-wrap: pretty;
  max-width: 72ch;
}

::selection {
  background: color-mix(in oklch, var(--color-primary) 25%, transparent);
  color: var(--color-text);
}

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

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

button {
  cursor: pointer;
  background: none;
  border: none;
}

a, button, [role='button'], [role='link'], input, textarea, select {
  transition:
    color var(--transition-interactive),
    background var(--transition-interactive),
    border-color var(--transition-interactive),
    box-shadow var(--transition-interactive),
    transform var(--transition-interactive);
}

.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;
}

/* ---- Layout utilities ---- */
.container {
  width: 100%;
  max-width: var(--content-wide);
  margin-inline: auto;
  padding-inline: clamp(var(--space-4), 4vw, var(--space-16));
}

.container--narrow {
  max-width: var(--content-narrow);
}

.container--default {
  max-width: var(--content-default);
}

/* ---- Typography utilities ---- */
.text-xs   { font-size: var(--text-xs); }
.text-sm   { font-size: var(--text-sm); }
.text-base { font-size: var(--text-base); }
.text-lg   { font-size: var(--text-lg); }
.text-xl   { font-size: var(--text-xl); }
.text-2xl  { font-size: var(--text-2xl); }
.text-3xl  { font-size: var(--text-3xl); }

.font-display { font-family: var(--font-display); }
.font-body    { font-family: var(--font-body); }

.text-muted   { color: var(--color-text-muted); }
.text-primary { color: var(--color-primary); }
.text-navy    { color: var(--color-navy); }
.text-cta     { color: var(--color-cta); }

/* ---- Button system ---- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: 0.75em 1.5em;
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: 600;
  letter-spacing: 0.02em;
  border-radius: var(--radius-md);
  text-decoration: none;
  cursor: pointer;
  border: 2px solid transparent;
  white-space: nowrap;
}

.btn-primary {
  background: var(--color-primary);
  color: #fff;
  border-color: var(--color-primary);
}
.btn-primary:hover {
  background: var(--color-primary-hover);
  border-color: var(--color-primary-hover);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

.btn-cta {
  background: var(--color-cta);
  color: #fff;
  border-color: var(--color-cta);
}
.btn-cta:hover {
  background: var(--color-cta-hover);
  border-color: var(--color-cta-hover);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

.btn-navy {
  background: var(--color-navy);
  color: #fff;
  border-color: var(--color-navy);
}
.btn-navy:hover {
  background: var(--color-navy-hover);
  border-color: var(--color-navy-hover);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

.btn-outline {
  background: transparent;
  color: var(--color-primary);
  border-color: var(--color-primary);
}
.btn-outline:hover {
  background: var(--color-primary);
  color: #fff;
  transform: translateY(-1px);
}

.btn-outline-white {
  background: transparent;
  color: #fff;
  border-color: rgba(255,255,255,0.6);
}
.btn-outline-white:hover {
  background: rgba(255,255,255,0.15);
  border-color: #fff;
}

.btn-lg {
  padding: 0.9em 2em;
  font-size: var(--text-base);
}

/* ---- Section helpers ---- */
.section {
  padding-block: clamp(var(--space-12), 8vw, var(--space-24));
}

.section-sm {
  padding-block: clamp(var(--space-8), 4vw, var(--space-16));
}

/* ---- Badge ---- */
.badge {
  display: inline-block;
  padding: 0.25em 0.8em;
  border-radius: var(--radius-full);
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  font-family: var(--font-body);
}

.badge-green {
  background: var(--color-primary-highlight);
  color: var(--color-primary-active);
}

.badge-navy {
  background: var(--color-navy-highlight);
  color: var(--color-navy);
}

.badge-orange {
  background: var(--color-cta-highlight);
  color: var(--color-cta-active);
}

/* ---- Card ---- */
.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: clamp(var(--space-6), 3vw, var(--space-10));
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--transition-interactive), transform var(--transition-interactive);
}

.card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

/* ---- Divider ---- */
.divider {
  height: 1px;
  background: var(--color-divider);
  border: none;
  margin-block: var(--space-8);
}

/* ---- Green accent bar ---- */
.accent-bar {
  width: 3rem;
  height: 3px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
  border-radius: var(--radius-full);
  margin-bottom: var(--space-4);
}

/* ---- Section label ---- */
.section-label {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-primary);
  font-family: var(--font-body);
  margin-bottom: var(--space-4);
}

.section-label::before {
  content: '';
  display: inline-block;
  width: 1.5rem;
  height: 2px;
  background: var(--color-accent);
  border-radius: var(--radius-full);
}

/* ---- Page header ---- */
.page-hero {
  background: linear-gradient(135deg, var(--color-navy) 0%, #0a2e60 50%, #0c3570 100%);
  color: #fff;
  padding-block: clamp(var(--space-16), 10vw, var(--space-32));
  position: relative;
  overflow: hidden;
}

.page-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse at 70% 50%, rgba(67, 146, 92, 0.18) 0%, transparent 60%),
    radial-gradient(ellipse at 20% 80%, rgba(58, 194, 31, 0.1) 0%, transparent 50%);
  pointer-events: none;
}

/* ---- Responsive grid ---- */
.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: clamp(var(--space-6), 3vw, var(--space-12));
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: clamp(var(--space-6), 3vw, var(--space-10));
}

.grid-4 {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: clamp(var(--space-4), 2vw, var(--space-8));
}

@media (max-width: 900px) {
  .grid-3, .grid-4 { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 600px) {
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
}

/* ---- Flex helpers ---- */
.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-4 { gap: var(--space-4); }
.gap-6 { gap: var(--space-6); }
.gap-8 { gap: var(--space-8); }

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

/* ---- Spacing utilities ---- */
.mt-4 { margin-top: var(--space-4); }
.mt-6 { margin-top: var(--space-6); }
.mt-8 { margin-top: var(--space-8); }
.mb-4 { margin-bottom: var(--space-4); }
.mb-6 { margin-bottom: var(--space-6); }
.mb-8 { margin-bottom: var(--space-8); }

/* ---- Icon circle ---- */
.icon-circle {
  width: 3rem;
  height: 3rem;
  border-radius: var(--radius-full);
  background: var(--color-primary-highlight);
  color: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.icon-circle-navy {
  background: var(--color-navy-highlight);
  color: var(--color-navy);
}

.icon-circle-lg {
  width: 4rem;
  height: 4rem;
}