/*
  base.css — reset, tipografi ve genel amaçlı utility class'lar.
  tokens.css'den SONRA yüklenmeli (var(--...) değişkenlerine bağımlı).
*/

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

body{
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

/* Sayfa geçici olarak kaydırılamaz durumdayken (drawer/modal açıkken) */
body.no-scroll{ overflow: hidden; }

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

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

h1, h2, h3, h4, p{ margin: 0; }

button, input, textarea, select{
  font-family: inherit;
  color: inherit;
}
button{
  cursor: pointer;
  background: none;
  border: none;
}

::selection{ background: var(--accent); color: #fff; }

/* Klavyeyle gezinirken görünür odak halkası, mouse tıklamasında gösterilmez */
:focus{ outline: none; }
:focus-visible{
  outline: 2px solid var(--accent-2);
  outline-offset: 2px;
  border-radius: 4px;
}

::-webkit-scrollbar{ width: 10px; height: 10px; }
::-webkit-scrollbar-track{ background: var(--bg); }
::-webkit-scrollbar-thumb{ background: var(--border); border-radius: var(--radius-pill); }
::-webkit-scrollbar-thumb:hover{ background: var(--text-faint); }

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

.container{
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 24px;
}

.section{
  padding: 96px 0;
  scroll-margin-top: var(--nav-height);
}
@media (max-width: 720px){
  .section{ padding: 64px 0; }
}

.section-kicker{
  display: inline-block;
  font-size: .78rem;
  font-weight: 700;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--accent-2);
  margin-bottom: 12px;
}

.section-heading{
  font-size: clamp(1.7rem, 3.2vw, 2.4rem);
  font-weight: 800;
  letter-spacing: -.02em;
  margin-bottom: 12px;
}

.section-sub{
  color: var(--text-dim);
  font-size: 1rem;
  max-width: 620px;
  margin-bottom: 44px;
}

/* Paylaşılan buton stilleri (Proje Fikri Bulucu ile aynı isimlendirme, tutarlılık için) */
.btn-primary, .btn-secondary{
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 13px 24px;
  border-radius: var(--radius-pill);
  font-weight: 700;
  font-size: .92rem;
  white-space: nowrap;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast), border-color var(--transition-fast), background var(--transition-fast), color var(--transition-fast);
}
.btn-primary{
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #fff;
  box-shadow: 0 16px 40px rgba(124,92,255,.28);
}
.btn-primary:hover{ transform: translateY(-2px); box-shadow: 0 20px 50px rgba(124,92,255,.4); }
.btn-secondary{
  background: var(--surface);
  border: 1px solid var(--border);
  color: var(--text);
}
.btn-secondary:hover{ border-color: var(--accent-2); color: var(--accent-2); transform: translateY(-2px); }

.btn-primary:active, .btn-secondary:active{ transform: translateY(0); }

@media (prefers-reduced-motion: reduce){
  html{ scroll-behavior: auto; }
  *, *::before, *::after{
    animation-duration: .001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .001ms !important;
    scroll-behavior: auto !important;
  }
}