/* ==========================================================================
   YönetPanel - Ana Stil Dosyası
   Kurumsal, sade, mobile-first, erişilebilir
   ========================================================================== */

:root {
  --color-primary: #1d4ed8;
  --color-primary-dark: #16389f;
  --color-primary-light: #eef3ff;
  --color-navy: #0d1f4b;
  --color-navy-2: #14307c;
  --color-accent: #f7a600;
  --color-accent-dark: #de9500;
  --color-heading: #101a2e;
  --color-text: #3b4557;
  --color-text-muted: #5f6b7e;
  --color-bg: #ffffff;
  --color-bg-alt: #f6f8fb;
  --color-border: #e5e9f2;
  --color-success: #16a34a;
  --color-danger: #dc2626;

  --font-base: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;

  --container-width: 1180px;
  --radius-sm: 10px;
  --radius-md: 14px;
  --radius-lg: 22px;
  --shadow-sm: 0 1px 3px rgba(16, 42, 110, 0.07);
  --shadow-md: 0 12px 32px rgba(16, 42, 110, 0.10);
  --shadow-lg: 0 24px 60px rgba(9, 25, 66, 0.18);
  --transition: 0.2s ease;
}

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body, h1, h2, h3, h4, p, figure, blockquote, dl, dd, ul, ol {
  margin: 0;
}
ul[class], ol[class] { list-style: none; padding: 0; }
img, picture, svg { max-width: 100%; display: block; }
input, button, textarea, select { font: inherit; color: inherit; }
button { cursor: pointer; }
a { color: inherit; }

body {
  font-family: var(--font-base);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.65;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}

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

@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;
  }
}

/* ---------- Erişilebilirlik yardımcıları ---------- */
.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;
}

.skip-link {
  position: absolute;
  left: 0;
  top: -48px;
  background: var(--color-primary);
  color: #fff;
  padding: 12px 20px;
  z-index: 1000;
  transition: top var(--transition);
  border-radius: 0 0 var(--radius-sm) 0;
}
.skip-link:focus { top: 0; }

:focus-visible {
  outline: 3px solid var(--color-accent);
  outline-offset: 2px;
}

/* ---------- Layout ---------- */
.container {
  width: 100%;
  max-width: var(--container-width);
  margin-inline: auto;
  padding-inline: 20px;
}

section { padding-block: 64px; }

@media (min-width: 768px) {
  section { padding-block: 88px; }
}

.section-alt { background: var(--color-bg-alt); }

.section-head {
  max-width: 720px;
  margin-bottom: 44px;
}
.section-head.center { margin-inline: auto; text-align: center; }
.section-head p { font-size: 1.05rem; }

.eyebrow {
  display: inline-block;
  color: var(--color-primary);
  font-weight: 700;
  font-size: 0.78rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  margin-bottom: 12px;
}

/* ---------- Başlıklar ---------- */
h1, .h1 {
  font-size: clamp(1.9rem, 4.5vw, 3rem);
  font-weight: 800;
  line-height: 1.12;
  letter-spacing: -0.02em;
  color: var(--color-heading);
}
h2, .h2 {
  font-size: clamp(1.5rem, 3vw, 2.15rem);
  font-weight: 800;
  line-height: 1.18;
  letter-spacing: -0.015em;
  color: var(--color-heading);
}
h3, .h3 {
  font-size: clamp(1.1rem, 2vw, 1.35rem);
  font-weight: 700;
  line-height: 1.3;
  color: var(--color-heading);
}
p { color: var(--color-text-muted); }
p + p { margin-top: 14px; }

/* ---------- Header / Navigasyon ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: #ffffff;
  border-bottom: 1px solid var(--color-border);
}

.nav-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 76px;
  gap: 16px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  font-size: 1.3rem;
  letter-spacing: -0.02em;
  text-decoration: none;
  color: var(--color-heading);
  flex-shrink: 0;
}
.logo span { color: var(--color-primary); }
.logo svg { border-radius: 8px; }

.nav-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: #fff;
  margin-left: auto;
  transition: border-color var(--transition);
}
.nav-toggle:hover { border-color: var(--color-primary); }
.nav-toggle svg { width: 22px; height: 22px; }

@media (min-width: 1024px) {
  .nav-toggle { display: none; }
}

.main-nav {
  position: fixed;
  inset: 76px 0 0 0;
  background: #fff;
  padding: 20px;
  overflow-y: auto;
  transform: translateX(100%);
  transition: transform var(--transition);
  border-top: 1px solid var(--color-border);
}
.main-nav.is-open { transform: translateX(0); }

.main-nav > ul {
  display: flex;
  flex-direction: column;
  gap: 4px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.main-nav a {
  display: block;
  padding: 14px 8px;
  text-decoration: none;
  font-weight: 600;
  color: var(--color-heading);
  border-bottom: 1px solid var(--color-border);
  min-height: 44px;
}

.main-nav a[aria-current="page"] { color: var(--color-primary); }

.has-submenu > button {
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: none;
  border: none;
  padding: 14px 8px;
  font-weight: 600;
  font-size: 1rem;
  color: var(--color-heading);
  min-height: 44px;
  border-bottom: 1px solid var(--color-border);
  text-align: left;
}
.has-submenu > button svg {
  width: 18px; height: 18px;
  transition: transform var(--transition);
}
.has-submenu[data-open="true"] > button svg { transform: rotate(180deg); }

.submenu {
  display: none;
  padding-left: 12px;
}
/* data-open ile açma yalnızca mobil menüde geçerli;
   masaüstünde dropdown hover/focus ile açılır */
@media (max-width: 1023.98px) {
  .has-submenu[data-open="true"] .submenu { display: block; }
}

.nav-cta {
  margin-top: 16px;
}

@media (min-width: 1024px) {
  .main-nav {
    display: flex;
    align-items: center;
    position: static;
    inset: auto;
    transform: none;
    padding: 0;
    border-top: none;
    overflow: visible;
  }
  .main-nav > ul {
    flex-direction: row;
    align-items: center;
    gap: 2px;
  }
  .main-nav a {
    border-bottom: none;
    padding: 10px 14px;
    border-radius: var(--radius-sm);
    font-size: 0.95rem;
  }
  .main-nav a:hover, .main-nav a:focus-visible { background: var(--color-primary-light); color: var(--color-primary); }
  .main-nav a[aria-current="page"] { color: var(--color-primary); }

  .has-submenu { position: relative; }
  .has-submenu > button {
    border-bottom: none;
    padding: 10px 14px;
    border-radius: var(--radius-sm);
    width: auto;
    font-size: 0.95rem;
    gap: 6px;
  }
  .has-submenu > button:hover { background: var(--color-primary-light); color: var(--color-primary); }
  .submenu {
    position: absolute;
    top: 100%;
    left: 0;
    min-width: 300px;
    background: #fff;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-md);
    padding: 10px;
    margin-top: 8px;
  }
  /* Buton ile açılır menü arasındaki 8px görsel boşluğu kapatan
     görünmez hover köprüsü: fare boşluktan geçerken :hover düşmesin */
  .submenu::before {
    content: "";
    position: absolute;
    top: -10px;
    left: 0;
    right: 0;
    height: 10px;
  }
  .has-submenu:hover .submenu,
  .has-submenu:focus-within .submenu {
    display: block;
  }
  .submenu a { border-radius: var(--radius-sm); padding: 12px 14px; }

  .nav-cta { margin-top: 0; margin-left: 12px; }
  .nav-cta .btn-block { width: auto; }
}

/* ---------- Butonlar ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 46px;
  padding: 13px 26px;
  border-radius: var(--radius-sm);
  font-weight: 700;
  font-size: 0.97rem;
  text-decoration: none;
  border: 2px solid transparent;
  transition: background var(--transition), color var(--transition), border-color var(--transition), transform var(--transition), box-shadow var(--transition);
}
.btn:active { transform: translateY(1px); }

.btn-primary {
  background: var(--color-primary);
  color: #fff;
  box-shadow: 0 4px 14px rgba(29, 78, 216, 0.25);
}
.btn-primary:hover { background: var(--color-primary-dark); box-shadow: 0 6px 18px rgba(29, 78, 216, 0.32); }

.btn-accent {
  background: var(--color-accent);
  color: #132043;
  box-shadow: 0 4px 14px rgba(247, 166, 0, 0.28);
}
.btn-accent:hover { background: var(--color-accent-dark); }

.btn-outline {
  background: transparent;
  border-color: var(--color-border);
  color: var(--color-heading);
}
.btn-outline:hover { border-color: var(--color-primary); color: var(--color-primary); }

.btn-block { width: 100%; }

/* ---------- Hero ---------- */
.hero {
  padding-block: 56px 64px;
  background:
    radial-gradient(900px 420px at 88% -12%, rgba(64, 116, 255, 0.38), transparent 62%),
    linear-gradient(135deg, var(--color-navy) 0%, var(--color-navy-2) 100%);
  color: #fff;
}
@media (min-width: 768px) { .hero { padding-block: 84px 96px; } }

.hero h1 { color: #fff; }
.hero p { color: #c0cce8; }
.hero p a { color: #a8c2ff; }
.hero .eyebrow { color: #8fb0ff; }

.hero .btn-primary {
  background: #fff;
  color: var(--color-navy-2);
  box-shadow: 0 6px 20px rgba(4, 12, 38, 0.35);
}
.hero .btn-primary:hover { background: #e9efff; }

.hero .btn-outline {
  border-color: rgba(255, 255, 255, 0.32);
  color: #fff;
}
.hero .btn-outline:hover { border-color: #fff; background: rgba(255, 255, 255, 0.08); color: #fff; }

.hero-grid {
  display: grid;
  gap: 40px;
  align-items: center;
}
@media (min-width: 900px) {
  .hero-grid { grid-template-columns: 1.1fr 0.9fr; gap: 56px; }
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 28px;
}

.hero-stats {
  display: flex;
  flex-wrap: wrap;
  gap: 32px;
  margin-top: 40px;
  padding-top: 28px;
  border-top: 1px solid rgba(255, 255, 255, 0.14);
}
.hero-stats strong { display: block; font-size: 1.7rem; font-weight: 800; color: var(--color-accent); }
.hero-stats span { font-size: 0.85rem; color: #9fb0d4; }

.hero-art {
  background: #fff;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  padding: 16px;
}

/* ---------- Breadcrumb ---------- */
.breadcrumb {
  padding-block: 16px;
  font-size: 0.9rem;
}
.breadcrumb ol {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  align-items: center;
  list-style: none;
  margin: 0;
  padding: 0;
}
.breadcrumb a { text-decoration: none; color: var(--color-text-muted); }
.breadcrumb a:hover { color: var(--color-primary); text-decoration: underline; }
.breadcrumb li:not(:last-child)::after {
  content: "/";
  margin-left: 6px;
  color: #c6cede;
}
.breadcrumb li[aria-current="page"] { color: var(--color-heading); font-weight: 600; }

/* ---------- Kartlar / Grid ---------- */
.card-grid {
  display: grid;
  gap: 22px;
  grid-template-columns: 1fr;
}
@media (min-width: 640px) { .card-grid { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1024px) { .card-grid.cols-4 { grid-template-columns: repeat(4, 1fr); } }
@media (min-width: 1024px) { .card-grid.cols-3 { grid-template-columns: repeat(3, 1fr); } }

.card {
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 28px 24px;
  transition: box-shadow var(--transition), transform var(--transition), border-color var(--transition);
  height: 100%;
}
.card:hover { box-shadow: var(--shadow-md); transform: translateY(-3px); border-color: #c9d8ff; }

.card-icon {
  width: 52px;
  height: 52px;
  border-radius: 13px;
  background: linear-gradient(135deg, #eef4ff, #dbe7ff);
  color: var(--color-primary-dark);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 1.15rem;
  margin-bottom: 18px;
}
.card-icon svg { width: 26px; height: 26px; }

.card h3 { margin-bottom: 8px; font-size: 1.12rem; }
.card p { font-size: 0.95rem; }

.solution-card {
  display: flex;
  flex-direction: column;
  text-decoration: none;
  color: inherit;
}
.solution-card .card-link {
  margin-top: auto;
  padding-top: 14px;
  font-weight: 700;
  font-size: 0.95rem;
  color: var(--color-primary);
}

/* ---------- Özellik listesi ---------- */
.check-list li {
  display: flex;
  gap: 12px;
  padding-block: 9px;
  align-items: flex-start;
  color: var(--color-text);
}
.check-list svg {
  flex-shrink: 0;
  width: 22px;
  height: 22px;
  padding: 3px;
  border-radius: 50%;
  background: #e8f7ee;
  color: var(--color-success);
  margin-top: 2px;
}

/* ---------- CTA bandı ---------- */
.cta-band {
  background:
    radial-gradient(700px 320px at 85% -10%, rgba(64, 116, 255, 0.4), transparent 62%),
    linear-gradient(135deg, var(--color-navy) 0%, var(--color-navy-2) 100%);
  color: #fff;
  border-radius: var(--radius-lg);
  padding: 56px 28px;
  text-align: center;
  box-shadow: var(--shadow-lg);
}
.cta-band h2 { color: #fff; }
.cta-band p { color: #c0cce8; margin-top: 8px; }
.cta-band .btn-primary { background: #fff; color: var(--color-navy-2); box-shadow: 0 6px 20px rgba(4, 12, 38, 0.35); }
.cta-band .btn-primary:hover { background: #e9efff; }

/* ---------- SSS / Accordion ---------- */
.faq-item {
  border-bottom: 1px solid var(--color-border);
}
.faq-question {
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  background: none;
  border: none;
  text-align: left;
  padding: 22px 4px;
  font-weight: 700;
  font-size: 1.05rem;
  color: var(--color-heading);
  min-height: 44px;
}
.faq-question:hover { color: var(--color-primary); }
.faq-question svg {
  flex-shrink: 0;
  width: 22px; height: 22px;
  color: var(--color-primary);
  transition: transform var(--transition);
}
.faq-item[data-open="true"] .faq-question svg { transform: rotate(180deg); }
.faq-answer {
  display: none;
  padding: 0 4px 22px;
}
.faq-item[data-open="true"] .faq-answer { display: block; }

/* ---------- Formlar ---------- */
.form-grid {
  display: grid;
  gap: 18px;
}
@media (min-width: 640px) {
  .form-grid.two-col { grid-template-columns: 1fr 1fr; }
}
.form-field { display: flex; flex-direction: column; gap: 6px; }
.form-field label { font-weight: 600; font-size: 0.92rem; color: var(--color-heading); }
.form-field input,
.form-field textarea,
.form-field select {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 12px 14px;
  min-height: 46px;
  background: #fff;
  width: 100%;
  transition: border-color var(--transition), box-shadow var(--transition);
}
.form-field input:focus,
.form-field textarea:focus,
.form-field select:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(29, 78, 216, 0.12);
}
.form-field textarea { min-height: 140px; resize: vertical; }
.form-field input:invalid[data-touched="true"],
.form-field textarea:invalid[data-touched="true"] {
  border-color: var(--color-danger);
}
.field-error {
  display: none;
  color: var(--color-danger);
  font-size: 0.85rem;
}
.form-field[data-invalid="true"] .field-error { display: block; }
.form-field[data-invalid="true"] input,
.form-field[data-invalid="true"] textarea { border-color: var(--color-danger); }

.form-note { font-size: 0.85rem; margin-top: 8px; }
.form-success {
  display: none;
  background: #ecfdf3;
  border: 1px solid #b7ebc6;
  color: #067647;
  border-radius: var(--radius-sm);
  padding: 14px 16px;
  margin-bottom: 18px;
}
.form-success.is-visible { display: block; }

/* ---------- Footer ---------- */
.site-footer {
  background: #0b1530;
  color: #aab6cf;
  padding-block: 64px 24px;
  border-top: 3px solid var(--color-primary);
}
.footer-grid {
  display: grid;
  gap: 36px;
  grid-template-columns: 1fr;
}
@media (min-width: 768px) {
  .footer-grid { grid-template-columns: 2fr repeat(3, 1fr); }
}
.footer-grid h2, .footer-grid h3 {
  color: #fff;
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 16px;
}
.footer-grid p { color: #8b99b8; font-size: 0.95rem; }
.footer-grid ul { list-style: none; padding: 0; }
.footer-grid ul li { margin-bottom: 11px; }
.footer-grid a { text-decoration: none; color: #aab6cf; transition: color var(--transition); }
.footer-grid a:hover { color: #fff; }
.footer-logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: #fff;
  font-weight: 800;
  font-size: 1.25rem;
  letter-spacing: -0.02em;
  text-decoration: none;
  margin-bottom: 14px;
}
.footer-logo span { color: #7da2ff; }
.footer-logo svg { border-radius: 7px; }
.footer-bottom {
  border-top: 1px solid #1d2a4d;
  margin-top: 44px;
  padding-top: 20px;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  justify-content: space-between;
  font-size: 0.85rem;
  color: #8593b0;
}
.footer-bottom a { color: #aab6cf; text-decoration: none; }
.footer-bottom a:hover { color: #fff; }

/* ---------- Sayfa içi bölümler ---------- */
.two-col-layout {
  display: grid;
  gap: 36px;
}
@media (min-width: 900px) {
  .two-col-layout { grid-template-columns: 1fr 1fr; align-items: center; }
  .two-col-layout.reverse > *:first-child { order: 2; }
}

.tag-pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--color-primary-light);
  color: var(--color-primary);
  font-weight: 700;
  font-size: 0.8rem;
  padding: 6px 12px;
  border-radius: 999px;
}

table {
  width: 100%;
  border-collapse: collapse;
  overflow-x: auto;
  display: block;
}
@media (min-width: 640px) { table { display: table; } }
th, td {
  text-align: left;
  padding: 12px 14px;
  border-bottom: 1px solid var(--color-border);
}
th { background: var(--color-bg-alt); color: var(--color-heading); }

.search-box {
  display: flex;
  gap: 8px;
  max-width: 480px;
}
.search-box input {
  flex: 1;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 12px 14px;
  min-height: 44px;
}

/* ---------- Blog ---------- */
.blog-card time { font-size: 0.85rem; color: var(--color-text-muted); }
.blog-card h2 a { color: var(--color-heading); }
.blog-card h2 a:hover { color: var(--color-primary); }
.article-body h2 { margin-top: 44px; margin-bottom: 12px; }
.article-body h3 { margin-top: 28px; margin-bottom: 10px; }
.article-body p { margin-bottom: 4px; }
.article-body a { color: var(--color-primary); }
.article-body ul, .article-body ol { padding-left: 22px; color: var(--color-text-muted); margin-bottom: 16px; }
.article-body ul { list-style: disc; }
.article-body ol { list-style: decimal; }
.article-meta {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  color: var(--color-text-muted);
  font-size: 0.9rem;
  margin-bottom: 24px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--color-border);
}

/* ---------- 404 ---------- */
.error-page {
  text-align: center;
  padding-block: 100px;
}
.error-page .code {
  font-size: clamp(4rem, 12vw, 8rem);
  font-weight: 800;
  color: #dfe8fb;
  line-height: 1;
}

/* ---------- Yardımcı sınıflar ---------- */
.mt-0 { margin-top: 0 !important; }
.text-center { text-align: center; }
.muted { color: var(--color-text-muted); }