/* ============================================================
   BASE — reset, tipografi, layout yardımcıları, temel bileşenler
   ============================================================ */

*, *::before, *::after { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font-base);
  color: var(--text);
  background: var(--bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  transition: var(--theme-transition);
}

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

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

ul, ol { list-style: none; margin: 0; padding: 0; }

h1, h2, h3, h4 { margin: 0; font-weight: 700; letter-spacing: -0.02em; line-height: 1.15; }

p { margin: 0; }

button { font-family: inherit; cursor: pointer; border: none; background: none; color: inherit; }

input, select, textarea { font-family: inherit; font-size: 1rem; }

.icon { width: 20px; height: 20px; flex-shrink: 0; }

.visually-hidden {
  position: absolute !important;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.text-accent { color: var(--primary); }

@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;
  }
}

/* ---------- LAYOUT ---------- */
.container {
  width: 100%;
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 24px;
}

.skip-link {
  position: absolute;
  left: -999px;
  top: 0;
  background: var(--surface-inverse);
  color: var(--text-inverse);
  padding: 12px 20px;
  z-index: 999;
  border-radius: 0 0 8px 0;
}
.skip-link:focus { left: 0; }

section { position: relative; }

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--primary);
  margin-bottom: 14px;
}
.eyebrow::before {
  content: "";
  width: 16px;
  height: 2px;
  background: var(--primary);
  display: inline-block;
}
.eyebrow--inverse { color: var(--accent-on-dark); }
.eyebrow--inverse::before { background: var(--accent-on-dark); }

.section-head { max-width: 640px; margin-bottom: 56px; }
.section-head h2 { font-size: clamp(1.75rem, 3vw, 2.5rem); margin-bottom: 16px; }
.section-lead { color: var(--muted); font-size: 1.05rem; }
.section-head--center { max-width: 680px; margin-left: auto; margin-right: auto; text-align: center; }

/* Scroll reveal */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.reveal.is-visible { opacity: 1; transform: translateY(0); }
.reveal-delay-1 { transition-delay: 0.08s; }
.reveal-delay-2 { transition-delay: 0.16s; }
.reveal-delay-3 { transition-delay: 0.24s; }

/* ---------- BUTTONS ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 15px 30px;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 0.95rem;
  white-space: nowrap;
  transition: background var(--transition-fast), color var(--transition-fast), border-color var(--transition-fast), transform var(--transition-fast);
  position: relative;
}
.btn-primary {
  background: var(--primary);
  color: var(--on-primary);
}
.btn-primary:hover { background: var(--primary-dark); transform: translateY(-1px); }
.btn-outline {
  background: transparent;
  color: var(--text);
  border: 1.5px solid var(--border-strong);
}
.btn-outline:hover { border-color: var(--text); background: var(--surface); }
.btn-lg { padding: 17px 34px; font-size: 1rem; }
.btn-sm { padding: 11px 20px; font-size: 0.875rem; }
.btn-block { width: 100%; }

/* Magnetic hover hissi — çok hafif, yalnızca işaretçi yakınken */
@media (hover: hover) and (pointer: fine) {
  .btn-magnetic { transition: transform 0.18s ease, background var(--transition-fast), color var(--transition-fast), border-color var(--transition-fast); }
}

/* ---------- FORM ELEMENTS (paylaşılan) ---------- */
.form-row { display: flex; flex-direction: column; gap: 8px; }
.form-row label { font-size: 0.85rem; font-weight: 600; color: var(--text); }
.form-row input,
.form-row select,
.form-row textarea {
  padding: 13px 16px;
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--surface-raised);
  color: var(--text);
  transition: border-color var(--transition-fast);
}
.form-row input:focus,
.form-row select:focus,
.form-row textarea:focus {
  outline: none;
  border-color: var(--primary);
}
.form-message {
  min-height: 20px;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--primary);
}

/* Odak görünürlüğü (erişilebilirlik) */
a:focus-visible,
button:focus-visible,
input:focus-visible,
select:focus-visible,
[tabindex]:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
  border-radius: 4px;
}