/* ==========================================================================
   1. Kök Değişkenler ve Genel Ayarlar
   ========================================================================== */

:root {
  /* Renk Paleti */
  --color-background: #0B0B0D;
  --color-surface: #121216;
  --color-card: #1C1C20;
  --color-accent: #C8F31D;
  --color-text-primary: #F5F5F5;
  --color-text-secondary: #9CA3AF;
  --color-text-muted: #6B7280;
  --color-border: #2D2D33;

  /* Tipografi */
  --font-family-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif, 'Apple Color Emoji', 'Segoe UI Emoji', 'Segoe UI Symbol';
  --font-weight-regular: 400;
  --font-weight-medium: 500;
  --font-weight-bold: 700;

  /* Boşluk ve Ölçüler */
  --spacing-xs: 4px;
  --spacing-sm: 8px;
  --spacing-md: 16px;
  --spacing-lg: 32px;
  --spacing-xl: 64px;
  --container-width: 1200px;
  --container-padding: 16px;

  /* Diğer */
  --border-radius: 12px;
  --transition-duration: 200ms;
  --box-shadow: 0 4px 16px rgba(0, 0, 0, 0.2);
}

/* Genel Sıfırlama ve Temel Stiller */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-family-sans);
  background-color: var(--color-background);
  color: var(--color-text-primary);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body.no-scroll {
  overflow: hidden;
}

/* ==========================================================================
   2. Yardımcı Sınıflar (Utility Classes)
   ========================================================================== */

.container {
  max-width: var(--container-width);
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--container-padding);
  padding-right: var(--container-padding);
}

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

.section-padding {
  padding-top: var(--spacing-xl);
  padding-bottom: var(--spacing-xl);
}

.text-center {
    text-align: center;
}

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

/* ==========================================================================
   3. Temel Bileşenler (Butonlar, Kartlar, Formlar)
   ========================================================================== */

/* Butonlar */
.btn {
  display: inline-block;
  padding: 14px 28px;
  font-family: inherit;
  font-size: 1rem;
  font-weight: var(--font-weight-bold);
  text-decoration: none;
  text-align: center;
  border: 2px solid transparent;
  border-radius: var(--border-radius);
  cursor: pointer;
  transition: all var(--transition-duration) ease;
}

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

.btn--primary:hover, .btn--primary:focus {
  background-color: #d6ff47;
  transform: translateY(-2px);
  box-shadow: 0 4px 10px rgba(200, 243, 29, 0.2);
}

.btn--secondary {
  background-color: transparent;
  color: var(--color-text-primary);
  border-color: var(--color-border);
}

.btn--secondary:hover, .btn--secondary:focus {
  background-color: var(--color-surface);
  border-color: var(--color-text-secondary);
}

/* Kartlar */
.card {
  background-color: var(--color-card);
  border-radius: var(--border-radius);
  padding: var(--spacing-lg);
  box-shadow: var(--box-shadow);
  transition: transform var(--transition-duration) ease, box-shadow var(--transition-duration) ease;
}

.card:hover {
    transform: translateY(-5px);
}

/* Form Elemanları */
.form-group {
    margin-bottom: var(--spacing-md);
}

.form-label {
    display: block;
    margin-bottom: var(--spacing-sm);
    font-weight: var(--font-weight-medium);
    color: var(--color-text-secondary);
}

.form-input, .form-textarea {
    width: 100%;
    padding: 14px;
    background-color: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    color: var(--color-text-primary);
    font-size: 1rem;
}

.form-input:focus, .form-textarea:focus {
    outline: none;
    border-color: var(--color-accent);
    box-shadow: 0 0 0 3px rgba(200, 243, 29, 0.2);
}

.form-checkbox-group {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.form-checkbox {
    accent-color: var(--color-accent);
}

.form-message {
    margin-top: var(--spacing-sm);
    font-size: 0.9rem;
}
.form-message.success { color: #4ade80; }
.form-message.error { color: #f87171; }


/* ==========================================================================
   4. Site Yapısı (Header, Footer, Navigasyon)
   ========================================================================== */

/* Header */
.header {
  position: sticky;
  top: 0;
  width: 100%;
  padding: var(--spacing-md) 0;
  background-color: rgba(11, 11, 13, 0.8);
  backdrop-filter: blur(10px);
  z-index: 1000;
  border-bottom: 1px solid var(--color-border);
}

.header__container {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.header__logo img {
  display: block;
  height: 40px;
}

.header__nav {
  display: none; /* Mobilde gizli */
}

.header__nav-list {
  display: flex;
  list-style: none;
  gap: var(--spacing-lg);
}

.header__nav-link {
  color: var(--color-text-secondary);
  text-decoration: none;
  font-weight: var(--font-weight-medium);
  transition: color var(--transition-duration) ease;
}

.header__nav-link:hover,
.header__nav-link:focus,
.header__nav-link.active {
  color: var(--color-text-primary);
}

.header__actions {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
}

.header__mobile-toggle {
  display: block; /* Mobilde görünür */
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--spacing-sm);
  z-index: 1001;
}

.header__mobile-toggle .icon-hamburger,
.header__mobile-toggle .icon-close {
    display: block;
    stroke: var(--color-text-primary);
}
.header__mobile-toggle .icon-close { display: none; }

.header__mobile-toggle[aria-expanded="true"] .icon-hamburger { display: none; }
.header__mobile-toggle[aria-expanded="true"] .icon-close { display: block; }


/* Mobil Menü */
.mobile-nav {
    position: fixed;
    top: 0;
    left: -100%; /* Başlangıçta gizli */
    width: 100%;
    height: 100vh;
    background-color: var(--color-background);
    z-index: 999;
    transition: left 0.3s ease-in-out;
    padding: 100px var(--spacing-lg) var(--spacing-lg);
    display: flex;
    flex-direction: column;
}

.mobile-nav.is-open {
    left: 0;
}

.mobile-nav__list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.mobile-nav__link {
    display: block;
    color: var(--color-text-primary);
    text-decoration: none;
    font-size: 1.5rem;
    font-weight: var(--font-weight-bold);
    padding: var(--spacing-sm) 0;
}

/* Skip to Content Link */
.skip-link {
    position: absolute;
    top: -100px;
    left: 0;
    background: var(--color-accent);
    color: var(--color-background);
    padding: var(--spacing-md);
    z-index: 9999;
    transition: top 0.3s;
}
.skip-link:focus {
    top: 0;
}

/* Footer */
.footer {
  background-color: var(--color-surface);
  padding: var(--spacing-xl) 0;
  border-top: 1px solid var(--color-border);
}

.footer__grid {
    display: grid;
    gap: var(--spacing-lg);
    grid-template-columns: repeat(1, 1fr);
}

.footer__brand .footer__logo {
    height: 40px;
    margin-bottom: var(--spacing-md);
}

.footer__socials {
    display: flex;
    gap: var(--spacing-md);
    margin-top: var(--spacing-md);
}
.footer__socials a { color: var(--color-text-secondary); }
.footer__socials a:hover { color: var(--color-text-primary); }
.footer__socials svg { width: 24px; height: 24px; }


.footer__links h3 {
    color: var(--color-text-primary);
    margin-bottom: var(--spacing-md);
}

.footer__links ul {
    list-style: none;
}

.footer__links a {
    color: var(--color-text-secondary);
    text-decoration: none;
    line-height: 2;
    transition: color var(--transition-duration) ease;
}

.footer__links a:hover {
    color: var(--color-accent);
}

.footer__bottom {
    margin-top: var(--spacing-xl);
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--color-border);
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    align-items: center;
    gap: var(--spacing-md);
    color: var(--color-text-muted);
    font-size: 0.9rem;
}

.footer__legal-links {
    display: flex;
    gap: var(--spacing-md);
}

.footer__legal-links a {
    color: var(--color-text-muted);
    text-decoration: none;
}
.footer__legal-links a:hover {
    color: var(--color-text-secondary);
}

/* ==========================================================================
   5. Sayfa Bileşenleri
   ========================================================================== */

/* Hero Bölümü */
.hero {
  padding: calc(var(--spacing-xl) * 2) 0;
  text-align: center;
  background: linear-gradient(180deg, var(--color-surface) 0%, var(--color-background) 100%);
}
.hero__title {
  font-size: 2.5rem;
  font-weight: var(--font-weight-bold);
  line-height: 1.2;
  max-width: 800px;
  margin: 0 auto var(--spacing-md);
}
.hero__subtitle {
  font-size: 1.25rem;
  color: var(--color-text-secondary);
  max-width: 600px;
  margin: 0 auto var(--spacing-lg);
}
.hero__actions {
  display: flex;
  justify-content: center;
  gap: var(--spacing-md);
  flex-wrap: wrap;
}

/* Hizmetler Izgarası */
.services-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
}
.service-card {
    display: flex;
    flex-direction: column;
    text-align: left;
    text-decoration: none;
    color: var(--color-text-primary);
}
.service-card__icon {
    width: 48px;
    height: 48px;
    margin-bottom: var(--spacing-md);
    color: var(--color-accent);
}
.service-card__title {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-sm);
}
.service-card__description {
    color: var(--color-text-secondary);
    flex-grow: 1;
    margin-bottom: var(--spacing-md);
}
.service-card__link {
    color: var(--color-accent);
    font-weight: var(--font-weight-bold);
    text-decoration: none;
}

/* Ekip Kartları */
.team-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: var(--spacing-lg);
}
.team-card {
    text-align: center;
}
.team-card__image {
    width: 120px;
    height: 120px;
    border-radius: 50%;
    object-fit: cover;
    margin: 0 auto var(--spacing-md);
    border: 3px solid var(--color-border);
}
.team-card__name {
    font-size: 1.25rem;
    font-weight: var(--font-weight-bold);
}
.team-card__title {
    color: var(--color-accent);
    margin-bottom: var(--spacing-sm);
}
.team-card__bio {
    color: var(--color-text-secondary);
    font-size: 0.9rem;
    margin-bottom: var(--spacing-md);
}
.team-card__socials a {
    color: var(--color-text-secondary);
}
.team-card__socials a:hover {
    color: var(--color-text-primary);
}
.team-card__socials svg { width: 24px; height: 24px; }


/* Müşteri Yorumları (Slider) */
.testimonial-slider {
    position: relative;
    overflow: hidden;
    max-width: 800px;
    margin: 0 auto;
}
.testimonial-slider__wrapper {
    display: flex;
    transition: transform var(--transition-duration) ease-in-out;
}
.testimonial-slide {
    flex: 0 0 100%;
    padding: var(--spacing-md);
}
.testimonial-card {
    padding: var(--spacing-lg);
}
.testimonial-card__stars {
    display: flex;
    gap: var(--spacing-xs);
    color: #f59e0b;
    margin-bottom: var(--spacing-md);
}
.testimonial-card__stars svg { width: 20px; height: 20px; }
.testimonial-card__text {
    font-style: italic;
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-md);
}
.testimonial-card__author {
    font-weight: var(--font-weight-bold);
}
.testimonial-card__author-title {
    font-size: 0.9rem;
    color: var(--color-text-muted);
}
.testimonial-slider__nav {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 100%;
    display: flex;
    justify-content: space-between;
    padding: 0;
    pointer-events: none;
}
.testimonial-slider__btn {
    pointer-events: all;
    background-color: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: 50%;
    width: 44px;
    height: 44px;
    cursor: pointer;
    display: flex;
    justify-content: center;
    align-items: center;
    color: var(--color-text-primary);
}
.testimonial-slider__dots {
    display: flex;
    justify-content: center;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-lg);
}
.testimonial-slider__dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background-color: var(--color-border);
    cursor: pointer;
}
.testimonial-slider__dot.active {
    background-color: var(--color-accent);
}

/* SSS (Akordeon) */
.accordion__item {
    border-bottom: 1px solid var(--color-border);
}
.accordion__button {
    width: 100%;
    background: none;
    border: none;
    padding: var(--spacing-md) 0;
    font-size: 1.1rem;
    font-weight: var(--font-weight-medium);
    color: var(--color-text-primary);
    text-align: left;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.accordion__icon {
    transition: transform var(--transition-duration) ease;
}
.accordion__button[aria-expanded="true"] .accordion__icon {
    transform: rotate(180deg);
}
.accordion__content {
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition-duration) ease-out;
}
.accordion__content p {
    padding-bottom: var(--spacing-md);
    color: var(--color-text-secondary);
}

/* Blog Kartları */
.blog-list {
    display: grid;
    gap: var(--spacing-lg);
}
.blog-card {
    text-decoration: none;
}
.blog-card__image {
    width: 100%;
    height: 200px;
    object-fit: cover;
    border-radius: var(--border-radius);
    margin-bottom: var(--spacing-md);
}
.blog-card__title {
    color: var(--color-text-primary);
    font-size: 1.25rem;
    margin-bottom: var(--spacing-sm);
}
.blog-card__excerpt {
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-md);
}
.blog-card__meta {
    font-size: 0.9rem;
    color: var(--color-text-muted);
}

/* Partner Logoları */
.logo-wall {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-lg);
    align-items: center;
}
.logo-wall img {
    max-width: 150px;
    width: 100%;
    filter: grayscale(100%) brightness(3);
    opacity: 0.7;
    transition: all var(--transition-duration) ease;
}
.logo-wall img:hover {
    filter: grayscale(0%) brightness(1);
    opacity: 1;
}

/* Çerez Bildirimi */
.cookie-banner {
    position: fixed;
    bottom: -200px; /* Başlangıçta gizli */
    left: 0;
    width: 100%;
    background-color: var(--color-card);
    padding: var(--spacing-md);
    box-shadow: 0 -4px 16px rgba(0, 0, 0, 0.3);
    z-index: 2000;
    transition: bottom 0.5s ease-in-out;
}

.cookie-banner.is-visible {
    bottom: 0;
}

.cookie-banner__container {
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    align-items: center;
    gap: var(--spacing-md);
}
.cookie-banner__text {
    color: var(--color-text-secondary);
    font-size: 0.9rem;
}
.cookie-banner__actions {
    display: flex;
    gap: var(--spacing-md);
}

/* ==========================================================================
   6. Sayfa Özel Stilleri
   ========================================================================== */

/* Yasal Metin Sayfaları */
.legal-content h2 {
    font-size: 1.5rem;
    margin-top: var(--spacing-lg);
    margin-bottom: var(--spacing-md);
    border-bottom: 1px solid var(--color-border);
    padding-bottom: var(--spacing-sm);
}
.legal-content h3 {
    font-size: 1.2rem;
    margin-top: var(--spacing-md);
    margin-bottom: var(--spacing-sm);
}
.legal-content p, .legal-content ul {
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-md);
}
.legal-content ul {
    padding-left: 20px;
}

/* ==========================================================================
   7. Medya Sorguları (Responsive Tasarım)
   ========================================================================== */

@media (min-width: 768px) {
  /* Genel */
  .section-padding {
    padding-top: calc(var(--spacing-xl) * 1.5);
    padding-bottom: calc(var(--spacing-xl) * 1.5);
  }

  /* Header */
  .header__nav { display: block; }
  .header__mobile-toggle { display: none; }

  /* Hero */
  .hero__title { font-size: 3.5rem; }
  .hero__subtitle { font-size: 1.5rem; }

  /* Gridler */
  .services-grid { grid-template-columns: repeat(2, 1fr); }
  .blog-list { grid-template-columns: repeat(2, 1fr); }
  .logo-wall { grid-template-columns: repeat(4, 1fr); }

  /* Footer */
  .footer__grid { grid-template-columns: 2fr 1fr 1fr 1fr; }
  .footer__bottom { flex-direction: row; }

  /* Cookie Banner */
  .cookie-banner__container { flex-direction: row; }

}

@media (min-width: 1024px) {
    /* Genel */
    html { font-size: 17px; }

    /* Gridler */
    .services-grid { grid-template-columns: repeat(3, 1fr); }
    .blog-list { grid-template-columns: repeat(3, 1fr); }
    .logo-wall { grid-template-columns: repeat(6, 1fr); }
}