/* B&G Store — Siyah & beyaz marka paleti */
:root {
  --color-black: #0a0a0a;
  --color-black-soft: #1a1a1a;
  --color-gray-800: #2d2d2d;
  --color-gray-600: #525252;
  --color-gray-400: #a3a3a3;
  --color-gray-200: #e5e5e5;
  --color-gray-100: #f5f5f5;
  --color-white: #ffffff;

  --color-primary: var(--color-black);
  --color-primary-dark: #000000;
  --color-bg: var(--color-gray-100);
  --color-surface: var(--color-white);
  --color-text: var(--color-black-soft);
  --color-muted: var(--color-gray-600);
  --color-border: var(--color-gray-200);

  --gradient-hero: linear-gradient(
    125deg,
    rgba(0, 0, 0, 0.82) 0%,
    rgba(45, 45, 45, 0.65) 45%,
    rgba(120, 120, 120, 0.35) 100%
  );
  --gradient-banner: linear-gradient(
    145deg,
    #0a0a0a 0%,
    #2d2d2d 42%,
    #6b6b6b 100%
  );
  --gradient-soft: linear-gradient(180deg, #ffffff 0%, #f0f0f0 100%);
  --gradient-subtle: linear-gradient(135deg, #fafafa 0%, #e8e8e8 100%);

  --font-sans: "Segoe UI", system-ui, -apple-system, sans-serif;
  --radius: 10px;
  --shadow: 0 4px 24px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 20px 50px rgba(0, 0, 0, 0.1);
  --transition: 0.25s ease;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: var(--font-sans);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--color-black); text-decoration-thickness: 1px; text-underline-offset: 3px; }
a:hover { color: var(--color-gray-600); }
.container { max-width: 1100px; margin: 0 auto; padding: 0 1.25rem; }
.narrow { max-width: 720px; }
.text-center { text-align: center; }

.site-header {
  background: rgba(255, 255, 255, 0.96);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--color-border);
  position: sticky;
  top: 0;
  z-index: 10;
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 64px;
}
.logo { font-weight: 700; font-size: 1.1rem; text-decoration: none; color: var(--color-black); }
.header-nav a {
  margin-left: 1.5rem;
  text-decoration: none;
  color: var(--color-text);
  font-size: 0.95rem;
  transition: color var(--transition);
}
.header-nav a:hover { color: var(--color-black); }

.hero {
  background: var(--gradient-banner);
  color: var(--color-white);
  padding: 5rem 0;
}
.hero h1 { font-size: clamp(1.75rem, 4vw, 2.5rem); margin: 0 0 1rem; font-weight: 700; letter-spacing: -0.02em; }
.hero-lead { font-size: 1.15rem; opacity: 0.9; max-width: 560px; margin-bottom: 2rem; }
.hero-actions .btn { margin-right: 0.5rem; }

.btn {
  display: inline-block;
  padding: 0.65rem 1.35rem;
  border-radius: var(--radius);
  text-decoration: none;
  font-weight: 600;
  border: 1px solid transparent;
  cursor: pointer;
  font-size: 0.95rem;
  transition: background var(--transition), color var(--transition), border-color var(--transition), transform 0.15s ease;
}
.btn-primary {
  background: var(--color-black);
  color: var(--color-white);
  border-color: var(--color-black);
}
.btn-primary:hover {
  background: var(--color-gray-800);
  border-color: var(--color-gray-800);
}
.btn-secondary {
  background: var(--color-white);
  color: var(--color-black);
  border-color: var(--color-gray-200);
}
.btn-secondary:hover {
  background: var(--color-gray-100);
  border-color: var(--color-gray-400);
}

.section { padding: 4rem 0; }
.section-alt { background: var(--color-surface); }
.section h2 { margin-top: 0; color: var(--color-black); letter-spacing: -0.02em; }
.feature-list { padding-left: 1.25rem; }
.feature-list li { margin-bottom: 0.5rem; }

.steps {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.5rem;
  margin-top: 2rem;
}
.step {
  background: var(--color-surface);
  padding: 1.5rem;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  border: 1px solid var(--color-border);
}
.step-num {
  display: inline-flex;
  width: 36px;
  height: 36px;
  align-items: center;
  justify-content: center;
  background: var(--color-black);
  color: var(--color-white);
  border-radius: 50%;
  font-weight: 700;
  margin-bottom: 0.75rem;
}

.site-footer {
  background: var(--color-black);
  color: var(--color-gray-400);
  padding: 2rem 0;
  font-size: 0.9rem;
}
.site-footer p { margin: 0; }

.alert { padding: 0.75rem 1rem; border-radius: var(--radius); margin-bottom: 1rem; border: 1px solid var(--color-border); }
.alert-success { background: var(--color-gray-100); color: var(--color-black); border-color: var(--color-gray-200); }
.alert-error { background: #fafafa; color: #404040; border-color: #d4d4d4; }