/* ==========================================================================
   YEŞİL VATANDA GENÇ EKOSİSTEM VE İKLİM YOLCULUĞU
   Ana Stil Dosyası (Modern Responsive UI / Green - White - Amber Palette)
   ========================================================================== */

:root {
  --color-primary: #15803d;        /* Zümrüt / Orman Yeşili */
  --color-primary-dark: #14532d;   /* Koyu Yeşil */
  --color-primary-light: #22c55e;  /* Canlı Açık Yeşil */
  --color-primary-soft: #f0fdf4;   /* Çok Açık Yeşil Zemin */
  --color-accent: #d97706;         /* Tamamlayıcı 3. Renk: Sıcak Kehribar/Amber */
  --color-accent-dark: #b45309;    /* Koyu Kehribar */
  --color-accent-soft: #fffbeb;    /* Yumuşak Amber Zemin */
  --color-bg: #ffffff;             /* Beyaz Sayfa Zeminleri */
  --color-bg-alt: #f8fafc;         /* Açık Gri/Yeşilimsi Yumuşak Zemin */
  --color-text-dark: #0f172a;      /* Koyu Metin */
  --color-text-muted: #475569;     /* İkincil Metin */
  --color-border: #e2e8f0;        /* Kenarlık Rengi */
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
  --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
  --radius-md: 0.75rem;
  --radius-lg: 1rem;
  --radius-xl: 1.5rem;
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Genel Temel Kurallar */
html {
  scroll-behavior: smooth;
  font-family: 'Plus Jakarta Sans', 'Inter', system-ui, -apple-system, sans-serif;
}

body {
  background-color: var(--color-bg);
  color: var(--color-text-dark);
  line-height: 1.65;
  overflow-x: hidden;
}

/* Özel Butonlar */
.btn-primary {
  background-color: var(--color-primary);
  color: #ffffff;
  padding: 0.65rem 1.4rem;
  border-radius: var(--radius-md);
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  transition: var(--transition);
  border: 1px solid transparent;
}
.btn-primary:hover {
  background-color: var(--color-primary-dark);
  box-shadow: 0 6px 16px rgba(21, 128, 61, 0.25);
  transform: translateY(-2px);
  color: #ffffff;
}

.btn-accent {
  background-color: var(--color-accent);
  color: #ffffff;
  padding: 0.65rem 1.4rem;
  border-radius: var(--radius-md);
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  transition: var(--transition);
  border: 1px solid transparent;
}
.btn-accent:hover {
  background-color: var(--color-accent-dark);
  box-shadow: 0 6px 16px rgba(217, 119, 6, 0.3);
  transform: translateY(-2px);
  color: #ffffff;
}

.btn-outline-green {
  background-color: transparent;
  color: var(--color-primary);
  border: 2px solid var(--color-primary);
  padding: 0.6rem 1.3rem;
  border-radius: var(--radius-md);
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  transition: var(--transition);
}
.btn-outline-green:hover {
  background-color: var(--color-primary);
  color: #ffffff;
  transform: translateY(-2px);
}

/* Üst Banner */
.project-banner-wrapper {
  background: linear-gradient(135deg, #14532d 0%, #15803d 100%);
  position: relative;
  overflow: hidden;
}
.project-banner-img {
  max-height: 180px;
  width: auto;
  object-fit: contain;
  margin: 0 auto;
}

/* Navigasyon Çubuğu */
.main-nav {
  transition: var(--transition);
}
.main-nav.scrolled {
  background-color: rgba(255, 255, 255, 0.96) !important;
  backdrop-filter: blur(12px);
  box-shadow: var(--shadow-md);
}

.nav-link-custom {
  position: relative;
  font-weight: 500;
  color: #334155;
  padding: 0.5rem 0.75rem;
  transition: var(--transition);
}
.nav-link-custom:hover,
.nav-link-custom.active {
  color: var(--color-primary);
}
.nav-link-custom::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  width: 0;
  height: 2px;
  background-color: var(--color-primary);
  transition: var(--transition);
  transform: translateX(-50%);
}
.nav-link-custom:hover::after,
.nav-link-custom.active::after {
  width: 80%;
}

/* Hero Slider */
.slider-container {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-lg);
  height: 480px;
}
.slider-track {
  display: flex;
  height: 100%;
  transition: transform 0.6s cubic-bezier(0.25, 1, 0.5, 1);
}
.slide-item {
  min-width: 100%;
  height: 100%;
  position: relative;
}
.slide-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.slide-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(0,0,0,0.1) 0%, rgba(0,0,0,0.75) 100%);
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 2.5rem 2rem;
  color: #ffffff;
}
.slider-btn {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  background-color: rgba(255, 255, 255, 0.85);
  color: var(--color-text-dark);
  width: 44px;
  height: 44px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  border: none;
  transition: var(--transition);
  z-index: 10;
  box-shadow: var(--shadow-md);
}
.slider-btn:hover {
  background-color: var(--color-primary);
  color: #ffffff;
}
.slider-btn.prev { left: 1rem; }
.slider-btn.next { right: 1rem; }

.slider-dots {
  position: absolute;
  bottom: 1rem;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 0.5rem;
  z-index: 10;
}
.slider-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background-color: rgba(255, 255, 255, 0.5);
  cursor: pointer;
  transition: var(--transition);
}
.slider-dot.active {
  width: 32px;
  border-radius: 6px;
  background-color: var(--color-accent);
}

/* Duyuru Kartı & Panosu */
.announcements-box {
  background: #ffffff;
  border-radius: var(--radius-xl);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-lg);
  overflow: hidden;
  height: 480px;
  display: flex;
  flex-direction: column;
}
.announcement-item {
  padding: 1rem;
  border-bottom: 1px solid var(--color-border);
  transition: var(--transition);
  cursor: pointer;
  position: relative;
}
.announcement-item:hover {
  background-color: var(--color-primary-soft);
  border-left: 4px solid var(--color-primary);
}
.announcement-item.important {
  border-left: 4px solid var(--color-accent);
  background-color: #fffdf7;
}

/* Kartlar ve Gölgeler */
.custom-card {
  background: #ffffff;
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  transition: var(--transition);
}
.custom-card:hover {
  box-shadow: var(--shadow-xl);
  transform: translateY(-4px);
  border-color: #cbd5e1;
}

/* Blog Gönderileri / Son İçerikler */
.post-card-img-wrap {
  position: relative;
  overflow: hidden;
  height: 220px;
  border-top-left-radius: var(--radius-lg);
  border-top-right-radius: var(--radius-lg);
}
.post-card-img-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}
.custom-card:hover .post-card-img-wrap img {
  transform: scale(1.06);
}

/* Teşekkür Belgeleri Kartı */
.cert-card {
  background: #ffffff;
  border-radius: var(--radius-lg);
  border: 1px solid #e2e8f0;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}
.cert-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
}
.cert-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-xl);
  border-color: var(--color-primary-light);
}

/* Galeri & Lightbox */
.gallery-item {
  position: relative;
  border-radius: var(--radius-md);
  overflow: hidden;
  cursor: pointer;
}
.gallery-item img {
  width: 100%;
  height: 260px;
  object-fit: cover;
  transition: transform 0.4s ease;
}
.gallery-item:hover img {
  transform: scale(1.08);
}
.gallery-overlay {
  position: absolute;
  inset: 0;
  background: rgba(20, 83, 45, 0.75);
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  opacity: 0;
  transition: var(--transition);
  color: #ffffff;
  padding: 1rem;
  text-align: center;
}
.gallery-item:hover .gallery-overlay {
  opacity: 1;
}

/* Video Kartı */
.video-card {
  background: #ffffff;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-md);
  transition: var(--transition);
}
.video-card:hover {
  box-shadow: var(--shadow-xl);
}

/* Modal Stilleri */
.custom-modal-backdrop {
  position: fixed;
  inset: 0;
  background-color: rgba(15, 23, 42, 0.75);
  backdrop-filter: blur(4px);
  z-index: 9999;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
}
.custom-modal-backdrop.active {
  opacity: 1;
  pointer-events: auto;
}
.custom-modal-content {
  background: #ffffff;
  border-radius: var(--radius-xl);
  width: 100%;
  max-width: 800px;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: var(--shadow-xl);
  transform: scale(0.95);
  transition: transform 0.3s ease;
}
.custom-modal-backdrop.active .custom-modal-content {
  transform: scale(1);
}

/* Admin Panel */
.admin-sidebar {
  background: #0f172a;
  color: #f8fafc;
  min-height: 100vh;
}
.admin-nav-item {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.75rem 1rem;
  border-radius: var(--radius-md);
  color: #94a3b8;
  font-weight: 500;
  transition: var(--transition);
  cursor: pointer;
}
.admin-nav-item:hover,
.admin-nav-item.active {
  background-color: #1e293b;
  color: #ffffff;
  border-left: 4px solid var(--color-primary-light);
}

/* Özel Ticker / Marquee */
.ticker-wrap {
  overflow: hidden;
  white-space: nowrap;
  background-color: var(--color-primary-soft);
  border-bottom: 1px solid #dcfce7;
  padding: 0.5rem 0;
}
.ticker-content {
  display: inline-block;
  padding-left: 100%;
  animation: ticker 35s linear infinite;
}
@keyframes ticker {
  0% { transform: translate3d(0, 0, 0); }
  100% { transform: translate3d(-100%, 0, 0); }
}

/* Responsive Uyarlamalar */
@media (max-width: 768px) {
  .slider-container,
  .announcements-box {
    height: 380px;
  }
  .post-card-img-wrap {
    height: 180px;
  }
}