/* ============================================================
   SILVER KEY REALTY — BASE STYLES
   Reset, typography, global effects
   ============================================================ */

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

html {
  scroll-behavior: smooth;
  overflow-x: hidden;
}

body {
  font-family: var(--sans);
  background: var(--white);
  color: var(--charcoal);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

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

/* ── SELECTION ── */
::selection {
  background: var(--champagne);
  color: var(--charcoal);
}

/* ── TYPOGRAPHY HIERARCHY ──
   H1: clamp(48px, 6vw, 80px)  — serif, 300
   H2: clamp(32px, 3.5vw, 46px) — serif, 300
   H3: 26px                     — serif, 400
   Body: 15px                   — sans, 200
   Small: 14px                  — sans, 200
   Tags: 10px uppercase         — sans, 300, tracked 3-4px
   CTAs: 12px uppercase         — sans, 400, tracked 2.5px
   
   RULE: Italic serif always uses champagne color.
   RULE: Body weight 200 (emphasis 400, NEVER bold 700+).
*/

em {
  font-style: italic;
  color: var(--champagne);
}

strong {
  font-weight: 400;
  color: var(--charcoal);
}

/* ── BUTTONS ── */
.btn-primary {
  font-family: var(--sans);
  font-size: 12px;
  font-weight: 400;
  letter-spacing: 2.5px;
  text-transform: uppercase;
  color: var(--white);
  background: var(--charcoal);
  padding: 16px 36px;
  border: none;
  cursor: pointer;
  transition: all var(--duration-normal) var(--ease-out);
  position: relative;
  display: inline-block;
}

.btn-primary::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 10%;
  width: 80%;
  height: 1px;
  background: var(--skr-green);
  opacity: 0;
  transition: opacity 0.4s;
  filter: blur(1px);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(10, 10, 10, 0.12), 0 4px 12px var(--skr-green-shadow);
}

.btn-primary:hover::after {
  opacity: 0.6;
}

.btn-ghost {
  font-family: var(--sans);
  font-size: 12px;
  font-weight: 300;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--warm-gray);
  display: inline-flex;
  align-items: center;
  gap: 8px;
  transition: all 0.4s;
}

.btn-ghost .arrow {
  transition: all 0.4s;
  color: var(--silver);
}

.btn-ghost:hover {
  color: var(--charcoal);
}

.btn-ghost:hover .arrow {
  transform: translateX(4px);
  color: var(--skr-green);
}

/* ── SCROLL REVEAL ── */
.reveal {
  opacity: 0;
  transform: translateY(40px);
  transition: all var(--duration-reveal) var(--ease-out);
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ── KEYFRAMES ── */
@keyframes fadeUp {
  to { opacity: 1; transform: translateY(0); }
}

@keyframes fadeIn {
  to { opacity: 1; }
}

@keyframes breathe {
  0%, 100% { transform: scale(1); opacity: 0.5; }
  50% { transform: scale(1.3); opacity: 1; }
}

/* ── GRAIN TEXTURE OVERLAY ── */
body::after {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: var(--z-grain);
  opacity: var(--grain-opacity);
  background: 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='1'/%3E%3C/svg%3E");
  background-size: 200px;
}

/* ── GREEN AMBIENT EDGE LIGHTING ── */
body::before {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: var(--z-ambient);
  background:
    linear-gradient(to right, var(--skr-green-ghost), transparent 3%, transparent 97%, var(--skr-green-ghost)),
    radial-gradient(ellipse at 0% 50%, var(--skr-green-ghost), transparent 40%),
    radial-gradient(ellipse at 100% 50%, var(--skr-green-ghost), transparent 40%);
}