/* ============================================================
   TAI Dynamics — Global Stylesheet
   Stack: Bootstrap 5.3 + Custom
   ============================================================ */

/* ----------------------------------------------------------
   1. CSS VARIABLES
   ---------------------------------------------------------- */
:root {
  --td-dark:       #0a0e1a;   /* Ana koyu arka plan */
  --td-dark-2:     #111827;   /* Kart / bölüm arka planı */
  --td-dark-3:     #1e2736;   /* Border / hover yüzeyleri */
  --td-accent:     #f59e0b;   /* Amber aksan — enerji */
  --td-accent-hover: #d97706;
  --td-text:       #e2e8f0;   /* Ana metin */
  --td-text-muted: #94a3b8;   /* İkincil metin */
  --td-white:      #ffffff;
  --td-border:     rgba(255,255,255,0.08);

  --navbar-height: 80px;
  --transition:    0.3s ease;
  --radius:        6px;
  --radius-lg:     12px;
}

/* ----------------------------------------------------------
   2. RESET & BASE
   ---------------------------------------------------------- */
*, *::before, *::after { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  background-color: var(--td-dark);
  color: var(--td-text);
  font-family: 'Inter', sans-serif;
  font-size: 16px;
  line-height: 1.7;
  overflow-x: hidden;
}

/* ----------------------------------------------------------
   3. TYPOGRAPHY
   ---------------------------------------------------------- */
h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--td-white);
}

h1 { font-size: clamp(2rem, 5vw, 3.5rem); letter-spacing: 0.04em; text-transform: uppercase; }
h2 { font-size: clamp(1.6rem, 3.5vw, 2.5rem); }
h3 { font-size: clamp(1.2rem, 2.5vw, 1.6rem); }

p { color: var(--td-text-muted); }

a { color: var(--td-accent); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--td-accent-hover); }

/* ----------------------------------------------------------
   4. NAVBAR
   ---------------------------------------------------------- */
#td-navbar {
  background-color: transparent;
  height: var(--navbar-height);
  transition: background-color var(--transition), box-shadow var(--transition);
  z-index: 1000;
}

#td-navbar.scrolled {
  background-color: rgba(10, 14, 26, 0.97);
  box-shadow: 0 1px 0 var(--td-border);
  backdrop-filter: blur(12px);
}

.navbar-brand img {
  height: 52px;   /* Dikey logo için artırıldı */
  width: auto;
  display: block;
  /* Koyu arka planda logoyu ayırt etmek için ince ışık efekti */
  filter: drop-shadow(0 0 1px rgba(255,255,255,0.15));
}

/* Brand text fallback (logo yoksa) */
.navbar-brand-text {
  font-size: 1.15rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--td-white) !important;
  line-height: 1.2;
}

.navbar-brand-text span {
  display: block;
  font-size: 0.6rem;
  font-weight: 400;
  letter-spacing: 0.2em;
  color: var(--td-accent);
}

.nav-link {
  color: rgba(255,255,255,0.8) !important;
  font-size: 0.85rem;
  font-weight: 500;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 0.4rem 1rem !important;
  transition: color var(--transition) !important;
  position: relative;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 1rem;
  right: 1rem;
  height: 2px;
  background: var(--td-accent);
  transform: scaleX(0);
  transition: transform var(--transition);
}

.nav-link:hover,
.nav-link.active {
  color: var(--td-white) !important;
}

.nav-link:hover::after,
.nav-link.active::after {
  transform: scaleX(1);
}

.navbar-toggler {
  border: 1px solid var(--td-border);
  padding: 6px 10px;
}

.navbar-toggler-icon {
  filter: invert(1);
}

/* Mobile nav */
@media (max-width: 991.98px) {
  #td-navbar.scrolled,
  #td-navbar {
    background-color: rgba(10, 14, 26, 0.98);
  }
  .navbar-collapse {
    background-color: var(--td-dark-2);
    border-top: 1px solid var(--td-border);
    padding: 1rem 0;
  }
  .nav-link::after { display: none; }
}

/* ----------------------------------------------------------
   5. BUTTONS
   ---------------------------------------------------------- */
.btn-td-primary {
  background-color: var(--td-accent);
  color: var(--td-dark);
  border: none;
  padding: 0.7rem 1.8rem;
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  border-radius: var(--radius);
  transition: background-color var(--transition), transform var(--transition);
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}

.btn-td-primary:hover {
  background-color: var(--td-accent-hover);
  color: var(--td-dark);
  transform: translateY(-1px);
}

.btn-td-outline {
  background-color: transparent;
  color: var(--td-white);
  border: 1px solid rgba(255,255,255,0.3);
  padding: 0.7rem 1.8rem;
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  border-radius: var(--radius);
  transition: border-color var(--transition), color var(--transition), transform var(--transition);
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}

.btn-td-outline:hover {
  border-color: var(--td-accent);
  color: var(--td-accent);
  transform: translateY(-1px);
}

/* ----------------------------------------------------------
   6. SECTION STRUCTURE
   ---------------------------------------------------------- */
.td-section {
  padding: 100px 0;
}

.td-section-sm {
  padding: 60px 0;
}

.td-section-label {
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--td-accent);
  margin-bottom: 1rem;
}

.td-divider {
  width: 48px;
  height: 3px;
  background: var(--td-accent);
  margin: 1rem 0 2rem;
}

.td-divider-center {
  margin: 1rem auto 2rem;
}

/* ----------------------------------------------------------
   7. HERO (iç sayfalar)
   ---------------------------------------------------------- */
.td-page-hero {
  min-height: 420px;
  display: flex;
  align-items: center;
  background-color: var(--td-dark-2);
  border-bottom: 1px solid var(--td-border);
  position: relative;
  overflow: hidden;
  padding-top: calc(var(--navbar-height) + 60px);
  padding-bottom: 80px;
}

.td-page-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at 60% 50%, rgba(245,158,11,0.06) 0%, transparent 70%);
}

.td-page-hero-label {
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--td-accent);
  margin-bottom: 1.2rem;
}

.td-page-hero h1 {
  font-size: clamp(1.8rem, 4vw, 3rem);
  margin-bottom: 1.2rem;
}

.td-page-hero p {
  font-size: 1.1rem;
  color: var(--td-text-muted);
  max-width: 600px;
}

/* ----------------------------------------------------------
   8. CARDS
   ---------------------------------------------------------- */
.td-card {
  background-color: var(--td-dark-2);
  border: 1px solid var(--td-border);
  border-radius: var(--radius-lg);
  padding: 2rem;
  transition: border-color var(--transition), transform var(--transition);
  height: 100%;
}

.td-card:hover {
  border-color: rgba(245,158,11,0.3);
  transform: translateY(-4px);
}

.td-card-icon {
  width: 52px;
  height: 52px;
  background: rgba(245,158,11,0.1);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.2rem;
  font-size: 1.4rem;
  color: var(--td-accent);
}

/* ----------------------------------------------------------
   9. TECH TABLE
   ---------------------------------------------------------- */
.td-tech-table {
  width: 100%;
  border-collapse: collapse;
}

.td-tech-table th,
.td-tech-table td {
  padding: 0.85rem 1rem;
  border-bottom: 1px solid var(--td-border);
  font-size: 0.9rem;
}

.td-tech-table th {
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--td-text-muted);
  background: transparent;
}

.td-tech-table td:first-child {
  color: var(--td-text-muted);
  font-weight: 500;
  width: 45%;
}

.td-tech-table td:last-child {
  color: var(--td-white);
  font-weight: 600;
}

.td-tech-table tr:last-child td {
  border-bottom: none;
}

/* ----------------------------------------------------------
   10. STAGE BADGE
   ---------------------------------------------------------- */
.td-badge {
  display: inline-block;
  padding: 0.25rem 0.75rem;
  border-radius: 100px;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.td-badge-amber {
  background: rgba(245,158,11,0.15);
  color: var(--td-accent);
  border: 1px solid rgba(245,158,11,0.3);
}

.td-badge-blue {
  background: rgba(59,130,246,0.15);
  color: #60a5fa;
  border: 1px solid rgba(59,130,246,0.3);
}

.td-badge-green {
  background: rgba(16,185,129,0.15);
  color: #34d399;
  border: 1px solid rgba(16,185,129,0.3);
}

/* ----------------------------------------------------------
   11. FOOTER
   ---------------------------------------------------------- */
#td-footer {
  background-color: var(--td-dark-2);
  border-top: 1px solid var(--td-border);
  padding: 2.5rem 0;
}

.td-footer-text {
  font-size: 0.85rem;
  color: var(--td-text-muted);
}

.td-footer-link {
  font-size: 0.85rem;
  color: var(--td-text-muted);
  transition: color var(--transition);
}

.td-footer-link:hover {
  color: var(--td-accent);
}

/* ----------------------------------------------------------
   12. MODALS
   ---------------------------------------------------------- */
.modal-content {
  background-color: var(--td-dark-2);
  border: 1px solid var(--td-border);
  color: var(--td-text);
}

.modal-header {
  border-bottom: 1px solid var(--td-border);
}

.modal-footer {
  border-top: 1px solid var(--td-border);
}

.btn-close {
  filter: invert(1) grayscale(1);
  opacity: 0.6;
}

.btn-close:hover {
  opacity: 1;
}

/* ----------------------------------------------------------
   13. UTILITY
   ---------------------------------------------------------- */
.text-accent { color: var(--td-accent) !important; }
.bg-td-dark  { background-color: var(--td-dark) !important; }
.bg-td-dark2 { background-color: var(--td-dark-2) !important; }

.td-separator {
  border: none;
  border-top: 1px solid var(--td-border);
  margin: 3rem 0;
}

/* Scroll reveal base state */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ----------------------------------------------------------
   13B. HOME SLIDER
   ---------------------------------------------------------- */
.td-slide-bg {
  width: 100%;
  height: 100vh;
  min-height: 600px;
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
}

.td-slide-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    to right,
    rgba(10, 14, 26, 0.85) 0%,
    rgba(10, 14, 26, 0.55) 60%,
    rgba(10, 14, 26, 0.25) 100%
  );
}

.td-slide-content {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  padding-top: var(--navbar-height);
}

.td-slide-label {
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--td-accent);
  margin-bottom: 1.2rem;
}

.td-slide-headline {
  font-size: clamp(2.2rem, 5.5vw, 4.2rem);
  font-weight: 900;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--td-white);
  line-height: 1.1;
  margin-bottom: 1.2rem;
}

.td-slide-sub {
  font-size: clamp(1rem, 1.8vw, 1.2rem);
  color: rgba(255,255,255,0.75);
  max-width: 520px;
  line-height: 1.6;
}

/* Carousel indicator style override */
.carousel-indicators [data-bs-target] {
  width: 28px;
  height: 3px;
  border-radius: 2px;
  background-color: rgba(255,255,255,0.4);
  border: none;
  transition: background-color 0.3s, width 0.3s;
}
.carousel-indicators .active {
  background-color: var(--td-accent);
  width: 48px;
}

/* Carousel fade animasyon */
.carousel-item {
  position: relative;
}

@media (max-width: 767.98px) {
  .td-slide-bg { height: 100svh; min-height: 500px; }
  .td-slide-headline { font-size: 2rem; }
}

/* ----------------------------------------------------------
   13B2. CONNECT — sosyal linkler
   ---------------------------------------------------------- */
.td-social-link {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--td-text-muted);
  transition: color var(--transition);
}

.td-social-link:hover {
  color: var(--td-accent);
}

/* ----------------------------------------------------------
   13C. NEWS DETAIL ARTICLE
   ---------------------------------------------------------- */
.td-article p,
.td-article li {
  font-size: 1.02rem;
  line-height: 1.95;
  color: var(--td-text-muted);
}

.td-article p + p { margin-top: 1.2rem; }

.td-article ul {
  padding-left: 1.4rem;
  margin-top: 1rem;
  margin-bottom: 1rem;
}

.td-article li { margin-bottom: 0.5rem; }

.td-article strong { color: var(--td-white); }

/* Breadcrumb custom */
.breadcrumb-item + .breadcrumb-item::before {
  color: var(--td-text-muted);
}

/* ----------------------------------------------------------
   14. PAGE HERO WITH BACKGROUND IMAGE
   ---------------------------------------------------------- */
.td-page-hero-img {
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
}

.td-page-hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    to right,
    rgba(10, 14, 26, 0.88) 0%,
    rgba(10, 14, 26, 0.65) 60%,
    rgba(10, 14, 26, 0.4) 100%
  );
  z-index: 1;
}

/* ----------------------------------------------------------
   15. LANGUAGE SWITCHER
   ---------------------------------------------------------- */
.td-lang-switcher {
  display: flex;
  align-items: center;
  gap: 0.3rem;
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.td-lang-active {
  color: var(--td-accent);
}

.td-lang-sep {
  color: var(--td-text-muted);
  font-weight: 400;
}

.td-lang-link {
  color: rgba(255,255,255,0.6) !important;
  transition: color var(--transition);
}

.td-lang-link:hover {
  color: var(--td-white) !important;
}

/* ----------------------------------------------------------
   16. NAVBAR LINKEDIN ICON
   ---------------------------------------------------------- */
.td-nav-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border-radius: var(--radius);
  color: rgba(255,255,255,0.7) !important;
  transition: color var(--transition), background-color var(--transition);
  font-size: 1rem;
}

.td-nav-icon:hover {
  color: var(--td-accent) !important;
  background-color: rgba(245,158,11,0.1);
}

/* ----------------------------------------------------------
   17. PRODUCT IMAGES (Energy Solutions)
   ---------------------------------------------------------- */
.td-product-img {
  max-height: 300px;
  object-fit: contain;
}

/* TES Mini — dikey görsel, daha küçük boyut */
#tes-mini .td-product-img {
  max-height: 350px;
}

/* ----------------------------------------------------------
   18. NEWS LIST ITEMS
   ---------------------------------------------------------- */
.td-news-item h2 {
  line-height: 1.5;
}

/* ----------------------------------------------------------
   19. RESPONSIVE HELPERS
   ---------------------------------------------------------- */
@media (max-width: 767.98px) {
  .td-section  { padding: 70px 0; }
  .td-section-sm { padding: 40px 0; }
  .td-page-hero { min-height: 320px; padding-top: calc(var(--navbar-height) + 40px); padding-bottom: 60px; }
  .td-product-img { max-height: 200px; }
}