/* ============================================
   BASE — Reset, Typography, Utilities
   ============================================ */

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  background: var(--color-bg);
  overflow-x: hidden;
  max-width: 100vw;
}

body {
  font-family: var(--font-body);
  font-size: var(--fs-base);
  line-height: var(--lh-normal);
  color: var(--color-text);
  background: var(--color-bg);
  overflow-x: hidden;
  max-width: 100vw;
  min-height: 100vh;
  font-feature-settings: "ss01", "cv11";
  position: relative;
}

/* Background texture — gentle, fixed, only visible on plain bg areas */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  background: var(--bg-texture);
  pointer-events: none;
  z-index: 0;
}

body > * {
  position: relative;
  z-index: 1;
}

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

/* SVG: never explode width, but respect explicit sizing from attributes/CSS */
svg {
  display: block;
  max-width: 100%;
}

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

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

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

ul,
ol {
  list-style: none;
}

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

h1 {
  letter-spacing: var(--tracking-tighter);
}

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

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

/* ---- Custom scrollbar — refined ---- */
::-webkit-scrollbar {
  width: 10px;
  height: 10px;
}
::-webkit-scrollbar-track {
  background: transparent;
}
::-webkit-scrollbar-thumb {
  background: var(--color-border-strong);
  border-radius: 999px;
  border: 2px solid var(--color-bg);
  transition: background var(--duration-base) var(--ease-out);
}
::-webkit-scrollbar-thumb:hover {
  background: var(--color-text-muted);
}

/* ============================================
   LAYOUT — Container, Section
   ============================================ */

.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding-left: var(--container-padding);
  padding-right: var(--container-padding);
}

.container--narrow {
  max-width: 920px;
}

.section {
  padding-top: var(--section-padding-y);
  padding-bottom: var(--section-padding-y);
  position: relative;
}

.section--compact {
  padding-top: clamp(3rem, 6vw, 4.5rem);
  padding-bottom: clamp(3rem, 6vw, 4.5rem);
}

.section__header {
  max-width: 760px;
  margin-bottom: clamp(2.5rem, 5vw, 4rem);
}

.section__header--center {
  margin-left: auto;
  margin-right: auto;
  text-align: center;
}

.section__header--compact {
  margin-bottom: 2.5rem;
}

.section__eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-body);
  font-size: var(--fs-xs);
  font-weight: var(--fw-semibold);
  text-transform: uppercase;
  letter-spacing: var(--tracking-wider);
  color: var(--color-accent);
  margin-bottom: 1.25rem;
  padding: 6px 12px;
  background: var(--gradient-primary-soft);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
}

.section__eyebrow::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-accent);
  box-shadow: 0 0 0 3px rgba(30, 111, 217, 0.2);
}

.section__title {
  font-size: var(--fs-4xl);
  font-weight: var(--fw-extrabold);
  line-height: var(--lh-tight);
  letter-spacing: var(--tracking-tighter);
  margin-bottom: 1.25rem;
  color: var(--color-text);
}

.section__title--sm {
  font-size: var(--fs-3xl);
}

.section__title--light {
  color: #ffffff;
}

.section__lead {
  font-size: var(--fs-md);
  color: var(--color-text-secondary);
  line-height: 1.65;
  font-weight: var(--fw-regular);
  max-width: 60ch;
}

.section__header--center .section__lead {
  margin-left: auto;
  margin-right: auto;
}

.section__lead--light {
  color: rgba(255, 255, 255, 0.72);
}

.section__text {
  font-size: var(--fs-base);
  color: var(--color-text-secondary);
  line-height: 1.7;
  margin-top: 1rem;
}

/* ============================================
   TEXT UTILITIES
   ============================================ */

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

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

.text-gradient-light {
  background: linear-gradient(135deg, #6fa8e8 0%, #b8d4f0 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
  display: inline;
}

.text-underline {
  position: relative;
  display: inline-block;
  white-space: nowrap;
}

.text-underline::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0.05em;
  height: 0.18em;
  background: var(--gradient-primary);
  opacity: 0.25;
  border-radius: 2px;
  z-index: -1;
}

.text-danger {
  color: var(--color-danger);
}

.text-balance {
  text-wrap: balance;
}

/* ============================================
   GLOBAL BACKGROUND TEXTURE — subtle grid
   ============================================ */
.bg-grid {
  position: relative;
}

.bg-grid::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--grid-color) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-color) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: radial-gradient(
    ellipse at center,
    rgba(0, 0, 0, 0.7),
    transparent 70%
  );
  -webkit-mask-image: radial-gradient(
    ellipse at center,
    rgba(0, 0, 0, 0.7),
    transparent 70%
  );
  pointer-events: none;
  z-index: 0;
}

.bg-grid > * {
  position: relative;
  z-index: 1;
}