/* ========================================
   GLOBAL STYLES – Thapar Sir Mathematics
   ======================================== */

@import url('https://fonts.googleapis.com/css2?family=Playfair+Display:wght@700;900&family=DM+Sans:wght@300;400;500;600&family=Space+Mono:wght@700&display=swap');

:root {
  --ink: #0e0e0e;
  --paper: #f5f0e8;
  --accent: #1a472a;
  --gold: #c9a84c;
  --red: #b5341e;
  --navy: #1a2a47;
  --light: #ede8dc;
  --muted: #6b6456;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }

body {
  background: var(--paper);
  color: var(--ink);
  font-family: 'DM Sans', sans-serif;
  overflow-x: hidden;
}

body::before {
  content: '';
  position: fixed; inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.04'/%3E%3C/svg%3E");
  pointer-events: none; z-index: 0;
}

/* SECTION BASE */
section { padding: 6rem 5vw; }

.section-label {
  font-size: 0.72rem; font-weight: 700;
  letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--muted); margin-bottom: 0.6rem;
}

.section-title {
  font-family: 'Playfair Display', serif;
  font-size: clamp(2rem, 3.5vw, 3rem); font-weight: 900;
  letter-spacing: -0.03em; line-height: 1.1; margin-bottom: 1rem;
}

.divider { width: 48px; height: 3px; background: var(--gold); margin-bottom: 3rem; }

/* ANIMATIONS */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(24px); }
  to   { opacity: 1; transform: translateY(0); }
}
.fade-up { opacity: 0; transform: translateY(24px); transition: opacity 0.6s ease, transform 0.6s ease; }
.fade-up.visible { opacity: 1; transform: translateY(0); }

/* Toast */
#toast {
  position: fixed; bottom: 2rem; right: 2rem;
  background: var(--accent); color: #fff;
  padding: 0.9rem 1.6rem;
  font-size: 0.88rem; font-weight: 600;
  opacity: 0; pointer-events: none;
  transform: translateY(10px); transition: all 0.3s; z-index: 999;
}
#toast.show { opacity: 1; transform: translateY(0); }

/* Shared button styles */
.btn-primary {
  background: var(--accent); color: #fff;
  padding: 0.9rem 2rem;
  font-family: 'DM Sans', sans-serif;
  font-size: 0.9rem; font-weight: 600;
  border: none; cursor: pointer;
  text-decoration: none; display: inline-block;
  transition: all 0.2s; letter-spacing: 0.03em;
}
.btn-primary:hover { background: var(--ink); transform: translateY(-2px); }

.btn-outline {
  background: transparent; color: var(--ink);
  padding: 0.9rem 2rem;
  font-family: 'DM Sans', sans-serif;
  font-size: 0.9rem; font-weight: 600;
  border: 1.5px solid var(--ink); cursor: pointer;
  text-decoration: none; display: inline-block;
  transition: all 0.2s; letter-spacing: 0.03em;
}
.btn-outline:hover { background: var(--ink); color: var(--paper); transform: translateY(-2px); }