/* =========================================================
   SP3 DIGITAL — CORE STYLES
   Design tokens, reset, base typography, layout utilities
   ========================================================= */

:root {
  /* Color */
  --primary: #2563eb;
  --primary-dark: #1d4ed8;
  --primary-deep: #1e3a8a;
  --secondary: #0f172a;
  --secondary-soft: #1e293b;
  --accent: #14b8a6;
  --accent-soft: #ccfbf1;
  --light: #f8fafc;
  --white: #ffffff;
  --text: #334155;
  --text-light: #64748b;
  --text-faint: #94a3b8;
  --border: #e2e8f0;
  --border-dark: #2c3b57;

  /* Type */
  --font-display: "Poppins", "Segoe UI", sans-serif;
  --font-body: "Inter", "Segoe UI", sans-serif;
  --font-mono: "JetBrains Mono", "SFMono-Regular", Consolas, monospace;

  /* Scale */
  --fs-xs: 0.8125rem;
  --fs-sm: 0.9375rem;
  --fs-base: 1rem;
  --fs-md: 1.125rem;
  --fs-lg: 1.375rem;
  --fs-xl: 1.75rem;
  --fs-2xl: 2.25rem;
  --fs-3xl: 3rem;
  --fs-4xl: 3.75rem;

  /* Spacing */
  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 1.5rem;
  --space-lg: 2.5rem;
  --space-xl: 4rem;
  --space-2xl: 6rem;
  --space-3xl: 9rem;

  /* Shape */
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 22px;
  --radius-full: 999px;

  /* Motion */
  --ease: cubic-bezier(0.4, 0, 0.2, 1);
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --dur-fast: 0.2s;
  --dur-med: 0.45s;
  --dur-slow: 0.9s;

  /* Elevation */
  --shadow-sm:
    0 1px 2px rgba(15, 23, 42, 0.06), 0 1px 1px rgba(15, 23, 42, 0.04);
  --shadow-md: 0 8px 24px -8px rgba(15, 23, 42, 0.16);
  --shadow-lg: 0 24px 48px -16px rgba(15, 23, 42, 0.24);
  --shadow-glow:
    0 0 0 1px rgba(37, 99, 235, 0.15), 0 16px 40px -12px rgba(37, 99, 235, 0.35);

  --container: 1240px;
  --header-h: 84px;
}

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

html {
  scroll-behavior: smooth;
}

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

body {
  font-family: var(--font-body);
  font-size: var(--fs-base);
  line-height: 1.65;
  color: var(--text);
  background: var(--white);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

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

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

button,
input,
textarea,
select {
  font: inherit;
  color: inherit;
}
button {
  cursor: pointer;
  background: none;
  border: none;
}

ul,
ol {
  list-style: none;
}

h1,
h2,
h3,
h4,
h5 {
  font-family: var(--font-display);
  font-weight: 600;
  color: var(--secondary);
  line-height: 1.15;
  letter-spacing: -0.02em;
}

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

::selection {
  background: var(--accent-soft);
  color: var(--secondary);
}

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

.section {
  padding-block: var(--space-2xl);
  position: relative;
}

.section-dark {
  background: var(--secondary);
  color: #f0f2f4;
}
.section-dark h2,
.section-dark h3,
.section-dark h4 {
  color: var(--white);
}

.section-lightdark {
  background: var(--secondary);
  color: #e4e7ea;
}
.section-lightdark h2,
.section-lightdark h3,
.section-lightdark h4 {
  color: var(--white);
}

.section-tinted {
  background: var(--light);
}

.section-head {
  max-width: 680px;
  margin-bottom: var(--space-xl);
}

.section-head.center {
  margin-inline: auto;
  text-align: center;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.5em;
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--primary);
  margin-bottom: var(--space-sm);
}

.eyebrow::before {
  content: "";
  width: 20px;
  height: 1px;
  background: var(--primary);
}

.section-dark .eyebrow {
  color: var(--accent);
}
.section-dark .eyebrow::before {
  background: var(--accent);
}

h2.section-title {
  font-size: var(--fs-3xl);
  margin-bottom: var(--space-sm);
}
.section-desc {
  font-size: var(--fs-md);
  color: var(--text-light);
  line-height: 1.7;
}
.section-dark .section-desc {
  color: #94a3b8;
}

/* -------------------- Grid utilities -------------------- */
.grid {
  display: grid;
  gap: var(--space-md);
}
.grid-2 {
  grid-template-columns: repeat(2, 1fr);
}
.grid-3 {
  grid-template-columns: repeat(3, 1fr);
}
.grid-4 {
  grid-template-columns: repeat(4, 1fr);
}

.flex {
  display: flex;
}
.flex-between {
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.flex-center {
  display: flex;
  align-items: center;
  justify-content: center;
}
.flex-col {
  display: flex;
  flex-direction: column;
}
.gap-sm {
  gap: var(--space-xs);
}
.gap-md {
  gap: var(--space-sm);
}
.gap-lg {
  gap: var(--space-md);
}

.text-center {
  text-align: center;
}
.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}

/* -------------------- Hero -------------------- */
.hero {
  position: relative;
  overflow: hidden;
  padding-top: calc(var(--header-h) + var(--space-2xl));
  padding-bottom: var(--space-2xl);
  background: linear-gradient(180deg, #f5f8ff 0%, var(--white) 55%);
}

.hero-grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: var(--space-2xl);
  align-items: center;
}

.hero-visual svg {
  width: 100%;
  height: auto;
  filter: drop-shadow(0 30px 60px rgba(15, 23, 42, 0.18));
}

/* Skip link */
.skip-link {
  position: absolute;
  left: -999px;
  top: 0;
  background: var(--primary);
  color: var(--white);
  padding: 0.75rem 1.25rem;
  z-index: 200;
  border-radius: 0 0 var(--radius-sm) 0;
}
.skip-link:focus {
  left: 0;
}

.industry-flow {
  margin-top: 20px;
}

.flow-item {
  background: #ffffff;
  border: 1px solid #e5e7eb;
  border-left: 4px solid var(--primary);
  border-radius: 12px;
  padding: 18px;
  transition: 0.3s;
}

.flow-item:hover {
  transform: translateY(-4px);
  box-shadow: 0 15px 40px rgba(0, 0, 0, 0.08);
}

.flow-label {
  display: block;
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--primary);
  margin-bottom: 8px;
}

.flow-arrow {
  text-align: center;
  font-size: 28px;
  color: var(--primary);
  margin: 15px 0;
  font-weight: 700;
}

.industry-tile h3,
.industry-tile h4 {
  color: var(--white);
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 1.5rem;
  line-height: 1.3;
}

.industry-tile .tile-idx {
  color: var(--accent);
  font-weight: 700;
}

.delivery-roadmap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 20px;
  flex-wrap: nowrap;
  overflow-x: auto;
  padding: 20px 0;
}

.roadmap-step {
  display: flex;
  flex-direction: column;
  align-items: center;
  min-width: 100px;
  text-align: center;
  flex-shrink: 0;
}

.circle {
  width: 60px;
  height: 60px;
  border-radius: 50%;
  background: linear-gradient(135deg, #2563eb, #14b8a6);
  color: #fff;
  font-size: 22px;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 10px 25px rgba(37, 99, 235, 0.3);
  transition: 0.3s;
}

.circle:hover {
  transform: translateY(-5px) scale(1.05);
}

.roadmap-step h4 {
  margin-top: 18px;
  color: #0f172a;
  font-size: 17px;
  font-weight: 600;
}

.connector {
  position: relative;
  flex: 1;
  height: 4px;
  min-width: 70px;
  background: linear-gradient(90deg, #2563eb, #14b8a6);
  margin: 0 10px;
}

.connector::after {
  content: "➜";
  position: absolute;
  right: -10px;
  top: 50%;
  transform: translateY(-50%);
  color: #2563eb;
  font-size: 18px;
  font-weight: bold;
}

/* Mobile */

@media (max-width: 992px) {
  .delivery-roadmap {
    justify-content: flex-start;
    gap: 0;
  }

  .roadmap-step {
    min-width: 110px;
  }

  .connector {
    min-width: 60px;
  }
}

.contact-label {
  font-size: 12px;

  text-transform: uppercase;

  letter-spacing: 1px;

  color: #94a3b8;

  margin-bottom: 6px;

  font-weight: 600;
}

.contact-value {
  color: #fff;

  font-size: 18px;

  font-weight: 600;

  margin-bottom: 18px;
}

.contact-benefits {
  margin-top: 50px;

  padding: 30px;

  border-radius: 18px;

  background: rgba(255, 255, 255, 0.04);

  border: 1px solid rgba(255, 255, 255, 0.08);
}

.contact-benefits h3 {
  color: #fff;

  margin-bottom: 20px;
}

.contact-benefits ul {
  list-style: none;

  padding: 0;

  margin: 0;
}

.contact-benefits li {
  color: #cbd5e1;

  padding: 10px 0;

  border-bottom: 1px solid rgba(255, 255, 255, 0.08);

  font-size: 15px;
}

.contact-benefits li:last-child {
  border-bottom: none;
}

#contact-form {
  background: #fff;

  padding: 40px;

  border-radius: 20px;

  box-shadow: 0 25px 60px rgba(0, 0, 0, 0.15);
}

#contact-form label {
  font-weight: 600;

  color: #0f172a;

  margin-bottom: 8px;

  display: block;
}

#contact-form input,
#contact-form select,
#contact-form textarea {
  width: 100%;

  padding: 14px 16px;

  border: 1px solid #cbd5e1;

  border-radius: 10px;

  font-size: 15px;

  transition: 0.3s;
}

#contact-form input:focus,
#contact-form select:focus,
#contact-form textarea:focus {
  outline: none;

  border-color: #2563eb;

  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15);
}