/* ================================================
   BASE.CSS — Variables, Reset, Typography, Utilities
   ANTC Website · Aytas Nextgen Tech Consultancy
   ================================================ */

/* ---------- CSS VARIABLES ---------- */
:root {
  --midnight: #0F172A;
  --sky:      #38BDF8;
  --purple:   #A855F7;
  --ghost:    #F1F5F9;
  --grey:     #94A3B8;
  --card:     #1E293B;
  --green:    #34D399;
  --border:   rgba(56, 189, 248, 0.15);
  --ease:     cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
  scroll-behavior: smooth;
}

body {
  background: var(--midnight);
  color: var(--ghost);
  font-family: 'Inter', sans-serif;
  overflow-x: hidden;
  line-height: 1.6;
}

::selection {
  background: var(--sky);
  color: var(--midnight);
}

/* ---------- TYPOGRAPHY ---------- */
h1, h2, h3, h4 {
  line-height: 1.2;
}

a {
  color: inherit;
}

/* ---------- SECTION COMMONS ---------- */
section {
  padding: 5.5rem 2rem;
}

.si {
  max-width: 1100px;
  margin: 0 auto;
}

.stag {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--sky);
  margin-bottom: 0.75rem;
}

.stitle {
  font-family: 'Space Grotesk', sans-serif;
  font-size: clamp(1.7rem, 3.2vw, 2.6rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 1rem;
  line-height: 1.25;
}

.ssub {
  color: var(--grey);
  font-size: 1rem;
  max-width: 580px;
  line-height: 1.75;
}

/* ---------- COLOUR UTILITIES ---------- */
.sky    { color: var(--sky); }
.purple { color: var(--purple); }
.green  { color: var(--green); }

/* ---------- DIVIDER ---------- */
.divider {
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--border), transparent);
  max-width: 1100px;
  margin: 0 auto;
}

/* ---------- BUTTONS ---------- */
.btn-primary {
  background: var(--sky);
  color: var(--midnight);
  padding: 0.8rem 2rem;
  border-radius: 10px;
  font-weight: 700;
  font-size: 0.95rem;
  cursor: pointer;
  border: none;
  transition: all 0.2s var(--ease);
  text-decoration: none;
  display: inline-block;
  font-family: inherit;
}

.btn-primary:hover {
  transform: scale(1.03);
  box-shadow: 0 0 32px rgba(56, 189, 248, 0.3);
}

.btn-ghost {
  background: transparent;
  color: var(--ghost);
  padding: 0.8rem 2rem;
  border-radius: 10px;
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  border: 1px solid rgba(241, 245, 249, 0.2);
  transition: all 0.2s var(--ease);
  text-decoration: none;
  display: inline-block;
}

.btn-ghost:hover {
  border-color: var(--ghost);
  transform: scale(1.02);
}