/* ============================================================
   SÍNTESIS.LIFE — Base, layout, buttons, forms
   ============================================================ */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  background: var(--bg-obsidian);
  color: var(--color-parchment-100);
  font-family: var(--font-sans);
  font-weight: 300;
  line-height: 1.6;
  overflow-x: hidden;
}
body::before {
  content: "";
  position: fixed; inset: 0; pointer-events: none; z-index: 0;
  background:
    radial-gradient(ellipse 80% 50% at 50% -10%, rgba(217,119,6,.07), transparent 60%),
    radial-gradient(ellipse 60% 40% at 85% 110%, rgba(45,212,191,.04), transparent 60%);
}
::selection { background: rgba(217,119,6,.35); }

.container { max-width: 1120px; margin: 0 auto; padding: 0 24px; position: relative; z-index: 1; }
.container-narrow { max-width: 820px; margin: 0 auto; padding: 0 24px; position: relative; z-index: 1; }

/* ---------- Buttons ---------- */
.btn-primary {
  display: inline-flex; align-items: center; justify-content: center; gap: 9px;
  background: linear-gradient(135deg, var(--color-gold-400), var(--color-gold-300));
  color: #1a1206; border: 0; border-radius: var(--radius-sm);
  padding: 12px 22px; font-family: var(--font-sans); font-weight: 600; font-size: .86rem;
  letter-spacing: .02em; cursor: pointer; text-decoration: none; white-space: nowrap;
  transition: transform .15s, box-shadow .15s;
}
.btn-primary:hover { transform: translateY(-1px); box-shadow: 0 8px 26px rgba(217,119,6,.35); }
.btn-primary:disabled { opacity: .6; cursor: wait; transform: none; }
.btn-secondary {
  display: inline-flex; align-items: center; justify-content: center; gap: 9px;
  background: transparent; color: var(--color-gold-300);
  border: 1px solid var(--line-gold); border-radius: var(--radius-sm);
  padding: 12px 22px; font-family: var(--font-sans); font-weight: 500; font-size: .86rem;
  cursor: pointer; text-decoration: none; transition: background .2s;
}
.btn-secondary:hover { background: rgba(217,119,6,.1); }

/* ---------- Section scaffolding ---------- */
.section-spacing { padding: 90px 0; }
.section-header { text-align: center; max-width: 680px; margin: 0 auto 52px; }
.section-badge {
  display: inline-block; border: 1px solid var(--line-gold); border-radius: 100px;
  padding: 7px 18px; font-family: var(--font-mono); font-size: .7rem;
  letter-spacing: .18em; text-transform: uppercase; color: var(--color-gold-300);
  background: rgba(217,119,6,.06);
}
.section-title {
  font-family: var(--font-serif); font-weight: 400;
  font-size: clamp(1.9rem, 3.6vw, 2.7rem);
  margin: 20px 0 14px; line-height: 1.15;
}
.section-subtitle { color: var(--color-parchment-300); font-size: .98rem; }
.text-gold-gradient {
  background: linear-gradient(120deg, #fde68a, var(--color-gold-300) 55%, var(--color-gold-500));
  -webkit-background-clip: text; background-clip: text; color: transparent;
}

/* ---------- Forms ---------- */
.form-group { display: flex; flex-direction: column; gap: 7px; }
.form-label {
  font-size: .74rem; letter-spacing: .1em; text-transform: uppercase;
  color: var(--color-slate-400); display: flex; justify-content: space-between;
}
.label-hint { font-family: var(--mono); font-size: .68rem; text-transform: none; letter-spacing: 0; color: var(--color-slate-500); }
.calc-input, .checkout-input {
  width: 100%; background: rgba(6,9,14,.7);
  border: 1px solid var(--color-border-subtle); border-radius: var(--radius-sm);
  color: var(--color-parchment-100); font-family: var(--font-sans); font-size: .95rem;
  padding: 13px 14px; outline: none; transition: border .2s;
}
.calc-input:focus, .checkout-input:focus { border-color: var(--color-gold-400); }
.calc-input::placeholder, .checkout-input::placeholder { color: var(--color-slate-500); }
.input-wrapper { position: relative; }
.input-icon { position: absolute; left: 13px; top: 50%; transform: translateY(-50%); color: var(--color-slate-500); display: flex; }
.input-wrapper .calc-input { padding-left: 40px; }

/* ---------- Shared decorative ---------- */
.glass-panel {
  background: linear-gradient(180deg, var(--bg-panel-raised), var(--bg-panel));
  border: 1px solid var(--color-border-subtle);
  border-radius: var(--radius-md);
}
.spin-animation { animation: spin 1s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }
@keyframes blink { 50% { opacity: .4; } }
@keyframes fadeUp { from { opacity: 0; transform: translateY(14px); } to { opacity: 1; transform: none; } }