/* ==========================================================================
   NEUROHEDEF — Ortak Stil Dosyası
   Orijinal React/Tailwind projesindeki "index.css" dosyasının statik karşılığı.
   ========================================================================== */

@import url("https://api.fontshare.com/v2/css?f[]=cabinet-grotesk@400,500,600,700,800&display=swap");
@import url("https://fonts.googleapis.com/css2?family=Manrope:wght@400;500;600;700;800&display=swap");

:root {
  --plum: #3A2645;
  --plum-deep: #2A1B33;
  --plum-soft: #4A3356;
  --plum-tint: #EFE9F2;
  --teal: #2A7B76;
  --teal-hover: #35908A;
  --teal-soft: #D8EBE9;
  --sand: #FAF9F6;
  --sand-dark: #F1EEE8;
  --gold: #D1A562;
  --border-c: #E4E0EA;
}

* { border-color: var(--border-c); }
html, body { height: 100%; }
body {
  background: var(--sand);
  color: #1A1620;
  font-family: "Manrope", system-ui, sans-serif;
  font-feature-settings: "ss01", "cv11";
  -webkit-font-smoothing: antialiased;
}
h1, h2, h3, h4, h5 {
  font-family: "Cabinet Grotesk", "Manrope", sans-serif;
  letter-spacing: -0.02em;
}
::selection { background: #3A2645; color: #FAF9F6; }

.font-display { font-family: "Cabinet Grotesk", "Manrope", sans-serif; }

/* ---- Layout helpers ---- */
.container-px { padding-left: 1.5rem; padding-right: 1.5rem; }
@media (min-width: 768px) { .container-px { padding-left: 3rem; padding-right: 3rem; } }
@media (min-width: 1024px) { .container-px { padding-left: 5rem; padding-right: 5rem; } }
.section-y { padding-top: 5rem; padding-bottom: 5rem; }
@media (min-width: 768px) { .section-y { padding-top: 7rem; padding-bottom: 7rem; } }

/* ---- Buttons ---- */
.btn-primary {
  display: inline-flex; align-items: center; justify-content: center; gap: 0.5rem;
  border-radius: 9999px; background: var(--teal); color: #fff; font-weight: 600;
  padding: 0.875rem 1.75rem; transition: all .3s;
  box-shadow: none;
}
.btn-primary:hover { background: var(--teal-hover); transform: translateY(-2px); box-shadow: 0 10px 30px -10px rgba(42,123,118,.55); }

.btn-secondary {
  display: inline-flex; align-items: center; justify-content: center; gap: 0.5rem;
  border-radius: 9999px; background: var(--plum); color: #fff; font-weight: 600;
  padding: 0.875rem 1.75rem; transition: all .3s;
}
.btn-secondary:hover { background: var(--plum-soft); transform: translateY(-2px); }

.btn-outline {
  display: inline-flex; align-items: center; justify-content: center; gap: 0.5rem;
  border-radius: 9999px; border: 2px solid var(--plum); color: var(--plum); font-weight: 600;
  padding: 0.875rem 1.75rem; transition: all .3s; background: transparent;
}
.btn-outline:hover { background: var(--plum); color: #fff; }

button:disabled.btn-primary,
button.btn-primary:disabled { opacity: .4; cursor: not-allowed; transform: none !important; }

/* ---- Cards & chips ---- */
.card-soft {
  background: #fff; border-radius: 1.5rem; border: 1px solid rgba(228,224,234,.6);
  box-shadow: 0 2px 8px rgba(58,38,69,.04); transition: box-shadow .3s;
}
.card-soft:hover { box-shadow: 0 18px 40px -20px rgba(58,38,69,.18); }

.chip {
  display: inline-flex; align-items: center; gap: 0.5rem; border-radius: 9999px;
  background: rgba(42,123,118,.1); color: var(--teal); padding: 0.375rem 0.9rem;
  font-size: 0.75rem; font-weight: 700; text-transform: uppercase; letter-spacing: .18em;
}
.overline {
  text-transform: uppercase; letter-spacing: .22em; font-size: 11px; font-weight: 700; color: var(--teal);
  display: inline-block;
}

/* ---- Backgrounds ---- */
.eeg-bg {
  background-image:
    radial-gradient(circle at 10% 10%, rgba(42,123,118,.08), transparent 40%),
    radial-gradient(circle at 90% 30%, rgba(58,38,69,.10), transparent 45%),
    radial-gradient(circle at 50% 90%, rgba(209,165,98,.08), transparent 40%);
}
.grain { position: relative; }
.grain::after {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='160' height='160'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/><feColorMatrix values='0 0 0 0 0  0 0 0 0 0  0 0 0 0 0  0 0 0 0.06 0'/></filter><rect width='100%25' height='100%25' filter='url(%23n)'/></svg>");
  opacity: .55; mix-blend-mode: multiply;
}
.mask-fade {
  -webkit-mask-image: linear-gradient(to right, transparent 0%, black 8%, black 92%, transparent 100%);
  mask-image: linear-gradient(to right, transparent 0%, black 8%, black 92%, transparent 100%);
}

/* ---- Brand color utility classes (Tailwind-config karşılığı) ---- */
.bg-plum { background-color: var(--plum); }
.bg-plum-deep { background-color: var(--plum-deep); }
.bg-plum-soft { background-color: var(--plum-soft); }
.text-plum { color: var(--plum); }
.text-plum\/40 { color: rgba(58,38,69,.4); }
.text-plum\/50 { color: rgba(58,38,69,.5); }
.text-plum\/55 { color: rgba(58,38,69,.55); }
.text-plum\/60 { color: rgba(58,38,69,.6); }
.text-plum\/65 { color: rgba(58,38,69,.65); }
.text-plum\/70 { color: rgba(58,38,69,.7); }
.text-plum\/75 { color: rgba(58,38,69,.75); }
.text-plum\/80 { color: rgba(58,38,69,.8); }
.text-plum\/85 { color: rgba(58,38,69,.85); }
.bg-teal { background-color: var(--teal); }
.text-teal { color: var(--teal); }
.text-teal-soft { color: var(--teal-soft); }
.bg-teal-soft { background-color: var(--teal-soft); }
.bg-sand { background-color: var(--sand); }
.bg-sand-dark { background-color: var(--sand-dark); }
.bg-gold { background-color: var(--gold); }
.text-gold { color: var(--gold); }
.border-teal { border-color: var(--teal); }

/* ---- Marquee (kurum logoları) ---- */
@keyframes marquee { 0% { transform: translateX(0); } 100% { transform: translateX(-50%); } }
.animate-marquee { animation: marquee 35s linear infinite; }
.animate-marquee:hover { animation-play-state: paused; }

/* ---- Ping (WhatsApp float) ---- */
@keyframes ping-slow { 75%, 100% { transform: scale(1.8); opacity: 0; } }
.animate-ping-slow { animation: ping-slow 2s cubic-bezier(0,0,.2,1) infinite; }

/* ---- Scroll-reveal animasyonu (framer-motion karşılığı) ---- */
[data-animate] { opacity: 0; transform: translateY(24px); transition: opacity .6s ease, transform .6s ease; }
[data-animate].is-visible { opacity: 1; transform: translateY(0); }
[data-animate="scale"] { transform: scale(.96); }
[data-animate="scale"].is-visible { transform: scale(1); }

/* ---- Form input ---- */
.input {
  width: 100%; border: 1.5px solid var(--border-c); background: #fff; border-radius: 14px;
  padding: 12px 14px; font-size: 14px; color: #1A1620; outline: none; transition: all .2s;
  font-family: inherit;
}
.input:focus { border-color: #2A7B76; box-shadow: 0 0 0 4px rgba(42,123,118,.12); }

/* ---- Accordion ---- */
.accordion-item { border-radius: 1rem; border: 1px solid rgba(228,224,234,.7); background: #fff; padding: 0 1.25rem; }
.accordion-item.dark { border-color: rgba(255,255,255,.15); background: rgba(255,255,255,.05); backdrop-filter: blur(6px); }
.accordion-trigger {
  width: 100%; text-align: left; font-family: "Cabinet Grotesk", sans-serif; font-size: 1.125rem;
  color: var(--plum); padding: 1.25rem 0; display: flex; align-items: center; justify-content: space-between;
  gap: 1rem; background: none; border: none; cursor: pointer;
}
.accordion-item.dark .accordion-trigger { color: #fff; }
.accordion-trigger .chev { transition: transform .25s; flex-shrink: 0; color: var(--teal); }
.accordion-item.is-open .accordion-trigger .chev { transform: rotate(180deg); }
.accordion-content { max-height: 0; overflow: hidden; transition: max-height .3s ease; }
.accordion-content-inner { padding-bottom: 1.25rem; color: rgba(58,38,69,.7); line-height: 1.7; }
.accordion-item.dark .accordion-content-inner { color: rgba(255,255,255,.75); }

/* ---- Toast (bildirim) ---- */
#toast-root { position: fixed; top: 1.25rem; left: 50%; transform: translateX(-50%); z-index: 200; display: flex; flex-direction: column; gap: .5rem; align-items: center; }
.toast {
  background: #fff; border-radius: 1rem; padding: .85rem 1.25rem; box-shadow: 0 10px 30px -8px rgba(0,0,0,.25);
  font-size: .875rem; font-weight: 600; color: var(--plum); display: flex; align-items: center; gap: .5rem;
  animation: toast-in .25s ease;
}
.toast.success { border-left: 4px solid var(--teal); }
.toast.error { border-left: 4px solid #e11d48; }
@keyframes toast-in { from { opacity: 0; transform: translateY(-10px); } to { opacity: 1; transform: translateY(0); } }

/* ---- Misc ---- */
.aspect-video { aspect-ratio: 16/9; }
.line-clamp-3 { display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden; }
a { text-decoration: none; }
.blog-content h1, .blog-content h2, .blog-content h3 { font-family: "Cabinet Grotesk", sans-serif; color: var(--plum); font-weight: 700; }
.blog-content p, .blog-content li { color: rgba(58,38,69,.8); font-size: 17px; line-height: 1.85; }
.blog-content h2 { margin-top: 2.25rem; margin-bottom: .75rem; font-size: 1.5rem; }
.blog-content h3 { margin-top: 1.75rem; margin-bottom: .5rem; font-size: 1.2rem; }
.blog-content p { margin-bottom: 1.1rem; }
.blog-content ul, .blog-content ol { color: rgba(58,38,69,.8); font-size: 17px; line-height: 1.85; margin: 0 0 1.1rem 1.25rem; }
.blog-content ul { list-style: disc; }
.blog-content ol { list-style: decimal; }
.blog-content blockquote { border-left: 3px solid var(--teal); background: rgba(42,123,118,.06); color: var(--plum); font-style: italic; padding: .9rem 1.25rem; border-radius: .5rem; margin: 1.5rem 0; }
.blog-content a { color: var(--teal); text-decoration: underline; }
.blog-content hr { border: none; border-top: 1px solid var(--border); margin: 2rem 0; }

/* ---- Araştırma filtre çipleri (arastirmalar.html) ---- */
.filter-chip {
  border: 1.5px solid var(--border); color: var(--plum); font-weight: 600; font-size: 13px;
  padding: .5rem 1.1rem; border-radius: 9999px; transition: all .2s; background: #fff; cursor: pointer;
}
.filter-chip.active, .filter-chip:hover { background: var(--plum); color: #fff; border-color: var(--plum); }

/* ---- Navbar ---- */
/* Navbar her zaman opak — sayfa kaydırıldığında altındaki içerik görünmesin,
   menü yazıları her zaman net okunsun. */
#site-navbar { background: var(--sand); border-bottom: 1px solid transparent; }
#site-navbar.scrolled { background: var(--sand); border-bottom: 1px solid var(--border-c); box-shadow: 0 4px 20px rgba(58,38,69,.07); }
#mobile-menu { display: none; }
#mobile-menu.open { display: block; }
[data-nav-link] { color: rgba(58,38,69,.8); }
[data-nav-link]:hover { color: var(--plum); background: rgba(58,38,69,.05); }
[data-nav-link].active-link { color: var(--teal) !important; background: rgba(42,123,118,.1) !important; }

/* ---- Floating WhatsApp ---- */
.floating-whatsapp {
  position: fixed; bottom: 1.5rem; right: 1.5rem; z-index: 40; display: inline-flex; align-items: center; gap: .5rem;
  background: #25D366; color: #fff; padding: .75rem 1.25rem .75rem 1rem; border-radius: 9999px;
  box-shadow: 0 10px 25px -5px rgba(6,95,70,.35); transition: transform .2s;
}
.floating-whatsapp:hover { transform: scale(1.05); color: #fff; }
.floating-whatsapp .ping {
  position: absolute; inset: 0; border-radius: 9999px; background: #25D366; opacity: .4;
  animation: ping-slow 2s cubic-bezier(0,0,.2,1) infinite;
}

/* ---- Admin ---- */
.admin-sidebar-link { display: flex; align-items: center; gap: .75rem; padding: .75rem 1rem; border-radius: .75rem; font-size: .875rem; font-weight: 600; color: rgba(255,255,255,.7); transition: background .2s, color .2s; }
.admin-sidebar-link:hover { background: rgba(255,255,255,.1); }
.admin-sidebar-link.active { background: var(--teal); color: #fff; }