/* =======================================
   ModelKutusu — main styles
   Dark theme, conversion-focused, zero bloat
======================================= */

/* Smooth focus for keyboard users */
:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 4px;
}

button, input, select, textarea { font-family: inherit; }
img, svg { display: block; max-width: 100%; }

/* =======================================
   Section base
======================================= */
.section {
  padding: 5rem 0;
  position: relative;
}
@media (min-width: 768px) {
  .section { padding: 6.5rem 0; }
}

.section-head {
  max-width: 780px;
  margin: 0 auto 3rem;
  text-align: center;
}
.section-tag {
  display: inline-block;
  padding: 0.3rem 0.8rem;
  background: var(--bg-elev);
  color: var(--accent);
  border: 1px solid var(--border-strong);
  border-radius: 999px;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  margin-bottom: 1rem;
}
.section-head h2 {
  font-size: clamp(1.6rem, 3.5vw, 2.4rem);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.02em;
  margin-bottom: 1rem;
}
.section-lead {
  color: var(--text-muted);
  font-size: 1.05rem;
  margin-bottom: 0.75rem;
}
.section-lead:last-child { margin-bottom: 0; }
.section-lead strong { color: var(--text); }

/* =======================================
   Metrics strip
======================================= */
.metrics {
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  background: linear-gradient(180deg, rgba(34, 211, 238, 0.025), transparent 70%);
  padding: 2rem 0;
}
.metrics-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem 2rem;
  text-align: center;
}
@media (min-width: 768px) {
  .metrics-grid { grid-template-columns: repeat(4, 1fr); }
}
.metric {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}
.metric-value {
  font-size: clamp(1.5rem, 3vw, 2rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  background: linear-gradient(135deg, #22d3ee, #a78bfa);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.metric-label {
  font-size: 0.9rem;
  color: var(--text-muted);
}

/* =======================================
   Problem
======================================= */
.problem-section {
  background:
    radial-gradient(50% 40% at 80% 10%, rgba(248, 113, 113, 0.06), transparent 70%),
    var(--bg);
}
.problem-grid {
  display: grid;
  gap: 1rem;
  grid-template-columns: 1fr;
}
@media (min-width: 720px) {
  .problem-grid { grid-template-columns: repeat(3, 1fr); gap: 1.25rem; }
}
.problem-card {
  padding: 1.75rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  transition: border-color .2s, transform .2s;
}
.problem-card:hover {
  border-color: var(--border-strong);
  transform: translateY(-2px);
}
.problem-icon {
  width: 52px; height: 52px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: rgba(248, 113, 113, 0.1);
  color: var(--danger);
  border-radius: 12px;
  margin-bottom: 1.25rem;
}
.problem-card h3 {
  font-size: 1.2rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
  letter-spacing: -0.01em;
}
.problem-card p {
  color: var(--text-muted);
  font-size: 0.975rem;
}

/* =======================================
   Advantages
======================================= */
.advantage-section {
  background:
    radial-gradient(60% 40% at 20% 0%, rgba(34, 211, 238, 0.06), transparent 70%),
    var(--bg);
}
.advantage-grid {
  display: grid;
  gap: 1.25rem;
  grid-template-columns: 1fr;
}
@media (min-width: 900px) {
  .advantage-grid { grid-template-columns: repeat(3, 1fr); }
}
.advantage-card {
  padding: 2rem;
  background: linear-gradient(180deg, var(--bg-card), var(--bg-elev));
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  position: relative;
  overflow: hidden;
}
.advantage-card::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(80% 50% at 50% 0%, var(--accent-glow), transparent 70%);
  opacity: 0;
  transition: opacity .3s;
  pointer-events: none;
}
.advantage-card:hover::before { opacity: 1; }
.adv-icon {
  width: 60px; height: 60px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: rgba(34, 211, 238, 0.1);
  color: var(--accent);
  border-radius: 14px;
  margin-bottom: 1.5rem;
}
.advantage-card h3 {
  font-size: 1.35rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  margin-bottom: 0.25rem;
}
.adv-sub {
  color: var(--accent);
  font-weight: 600;
  font-size: 0.9rem;
  margin-bottom: 0.85rem;
}
.advantage-card p {
  color: var(--text-muted);
  margin-bottom: 1.25rem;
}
.advantage-card p strong { color: var(--text); }
.adv-list {
  list-style: none;
  border-top: 1px solid var(--border);
  padding-top: 1rem;
}
.adv-list li {
  padding: 0.4rem 0 0.4rem 1.5rem;
  position: relative;
  color: var(--text-muted);
  font-size: 0.925rem;
}
.adv-list li::before {
  content: "";
  position: absolute;
  left: 0; top: 0.75rem;
  width: 12px; height: 2px;
  background: var(--accent);
  border-radius: 2px;
}

/* =======================================
   Hardware
======================================= */
.hardware-section {
  background:
    radial-gradient(60% 50% at 50% 0%, rgba(167, 139, 250, 0.06), transparent 70%),
    var(--bg);
}
.hardware-grid {
  display: grid;
  gap: 1.5rem;
  grid-template-columns: 1fr;
}
@media (min-width: 900px) {
  .hardware-grid { grid-template-columns: repeat(2, 1fr); }
}
.gpu-card {
  padding: 2rem;
  background: var(--bg-card);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-lg);
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  position: relative;
  overflow: hidden;
}
.gpu-card::after {
  content: "";
  position: absolute;
  top: -1px; left: -1px; right: -1px;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--accent), transparent);
  opacity: 0.6;
}
.gpu-card-head h3 {
  font-size: 1.75rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin: 0.5rem 0 0.35rem;
}
.gpu-badge {
  display: inline-block;
  padding: 0.3rem 0.75rem;
  background: rgba(34, 211, 238, 0.12);
  color: var(--accent);
  border-radius: 999px;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.03em;
  text-transform: uppercase;
}
.gpu-badge-alt {
  background: rgba(167, 139, 250, 0.12);
  color: #c4b5fd;
}
.gpu-tagline {
  color: var(--text-muted);
  font-size: 1rem;
}
.gpu-specs {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0.75rem 1.5rem;
  padding: 1.25rem;
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}
.gpu-specs > div { display: flex; flex-direction: column; gap: 0.2rem; }
.gpu-specs dt {
  font-size: 0.75rem;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-weight: 500;
}
.gpu-specs dd {
  font-size: 1rem;
  color: var(--text);
  font-weight: 600;
  font-family: var(--font-mono);
}
.gpu-best-for h4 {
  font-size: 0.85rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--accent);
  margin-bottom: 0.5rem;
}
.gpu-best-for p {
  color: var(--text-muted);
  font-size: 0.975rem;
}
.gpu-edge {
  padding: 0.85rem 1rem;
  background: rgba(34, 211, 238, 0.06);
  border-left: 3px solid var(--accent);
  border-radius: 0 var(--radius) var(--radius) 0;
  font-size: 0.925rem;
  color: var(--text);
  font-weight: 500;
}
.gpu-card .btn { align-self: flex-start; margin-top: auto; }
.hardware-foot {
  max-width: 760px;
  margin: 2.5rem auto 0;
  text-align: center;
  color: var(--text-muted);
  font-size: 0.95rem;
}

/* =======================================
   Managed-service section
======================================= */
.managed-section {
  background:
    radial-gradient(55% 45% at 80% 0%, rgba(52, 211, 153, 0.06), transparent 70%),
    radial-gradient(55% 45% at 20% 100%, rgba(34, 211, 238, 0.06), transparent 70%),
    var(--bg);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}
.accent-text {
  background: linear-gradient(135deg, #22d3ee 0%, #a78bfa 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.managed-grid {
  display: grid;
  gap: 1.25rem;
  grid-template-columns: 1fr;
  margin-bottom: 3rem;
}
@media (min-width: 900px) {
  .managed-grid { grid-template-columns: repeat(3, 1fr); }
}
.managed-card {
  padding: 1.85rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  transition: border-color .2s, transform .2s;
}
.managed-card:hover {
  border-color: var(--border-strong);
  transform: translateY(-2px);
}
.managed-card--highlight {
  background: linear-gradient(180deg, rgba(52, 211, 153, 0.08), var(--bg-card));
  border-color: rgba(52, 211, 153, 0.35);
}
.managed-icon {
  width: 52px; height: 52px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: rgba(34, 211, 238, 0.1);
  color: var(--accent);
  border-radius: 12px;
  margin-bottom: 1.15rem;
}
.managed-card--highlight .managed-icon {
  background: rgba(52, 211, 153, 0.12);
  color: var(--success);
}
.managed-card h3 {
  font-size: 1.2rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  margin-bottom: 0.6rem;
}
.managed-card p {
  color: var(--text-muted);
  font-size: 0.975rem;
}
.managed-card p strong { color: var(--text); }

/* Stack chips panel */
.stack-panel {
  padding: 2rem;
  background: var(--bg-elev);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-lg);
  text-align: center;
}
.stack-title {
  font-size: 1.1rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  margin-bottom: 0.4rem;
  color: var(--text);
}
.stack-lead {
  color: var(--text-muted);
  font-size: 0.95rem;
  margin-bottom: 1.5rem;
}
.stack-chips {
  list-style: none;
  padding: 0;
  margin: 0 0 1.5rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 0.6rem;
  justify-content: center;
}
.stack-chips li {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 0.9rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 999px;
  color: var(--text);
  font-size: 0.9rem;
  font-weight: 500;
  transition: border-color .15s, color .15s;
}
.stack-chips li:hover {
  border-color: var(--accent);
  color: var(--accent);
}
.chip-dot {
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--accent);
  flex-shrink: 0;
}
.stack-note {
  color: var(--text-dim);
  font-size: 0.875rem;
  max-width: 640px;
  margin: 0 auto;
}

/* =======================================
   Sectors
======================================= */
.sector-section {
  background: var(--bg);
}
.sector-grid {
  display: grid;
  gap: 1.5rem;
  grid-template-columns: 1fr;
}
@media (min-width: 900px) {
  .sector-grid { grid-template-columns: repeat(2, 1fr); }
}
.sector-card {
  padding: 2.25rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  position: relative;
  overflow: hidden;
}
.sector-card::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  opacity: 0.5;
}
.sector-gov::before {
  background: radial-gradient(60% 50% at 0% 100%, rgba(52, 211, 153, 0.1), transparent 60%);
}
.sector-ent::before {
  background: radial-gradient(60% 50% at 100% 0%, rgba(96, 165, 250, 0.1), transparent 60%);
}
.sector-card > * { position: relative; z-index: 1; }
.sector-icon {
  width: 64px; height: 64px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-elev);
  border: 1px solid var(--border-strong);
  color: var(--accent);
  border-radius: 14px;
  margin-bottom: 1.25rem;
}
.sector-gov .sector-icon { color: var(--success); }
.sector-ent .sector-icon { color: #60a5fa; }
.sector-card h3 {
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 0.35rem;
}
.sector-lead {
  color: var(--text-muted);
  font-size: 1rem;
  margin-bottom: 1rem;
  font-weight: 500;
}
.sector-card > p {
  color: var(--text-muted);
  margin-bottom: 1.25rem;
}
.sector-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 0.5rem;
}
.sector-list li {
  padding-left: 1.75rem;
  position: relative;
  color: var(--text);
  font-size: 0.95rem;
}
.sector-list li::before {
  content: "";
  position: absolute;
  left: 0; top: 0.55rem;
  width: 12px; height: 12px;
  border-radius: 3px;
  background: linear-gradient(135deg, var(--accent), var(--accent-strong));
}

/* =======================================
   Contact — email card + FAQ accordion
======================================= */
.contact-section {
  background:
    radial-gradient(60% 60% at 50% 0%, rgba(34, 211, 238, 0.10), transparent 70%),
    linear-gradient(180deg, var(--bg-elev), var(--bg));
  border-top: 1px solid var(--border);
}
.contact-head { text-align: center; max-width: 780px; margin: 0 auto 3rem; }
.contact-head h2 {
  font-size: clamp(1.7rem, 3.5vw, 2.4rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  margin: 1rem 0;
}
.contact-head p { color: var(--text-muted); }
.contact-head p strong { color: var(--text); }

.contact-grid {
  display: grid;
  gap: 2rem;
  grid-template-columns: 1fr;
  max-width: 1080px;
  margin: 0 auto;
}
@media (min-width: 900px) {
  .contact-grid { grid-template-columns: 1fr 1fr; gap: 2.5rem; }
}

.contact-info h3,
.contact-faq h3 {
  font-size: 1.2rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  margin-bottom: 1.25rem;
  color: var(--text);
}

.contact-methods {
  display: flex;
  flex-direction: column;
  gap: 0.9rem;
}
.contact-method {
  display: flex;
  gap: 1rem;
  padding: 1.15rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: border-color .15s;
}
.contact-method:hover { border-color: var(--border-strong); }
.contact-icon {
  flex-shrink: 0;
  width: 44px; height: 44px;
  background: linear-gradient(135deg, rgba(34, 211, 238, 0.18), rgba(59, 130, 246, 0.18));
  color: var(--accent);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.contact-details h4 {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 0.2rem;
}
.contact-details p {
  font-size: 0.85rem;
  color: var(--text-dim);
  margin-bottom: 0.3rem;
}
.contact-details a {
  color: var(--accent);
  font-weight: 500;
  font-size: 0.975rem;
  word-break: break-word;
}
.contact-details a:hover { text-decoration: underline; }
.contact-city {
  color: var(--text);
  font-weight: 500;
  font-size: 0.975rem;
}

.contact-cta-box {
  margin-top: 1.25rem;
  padding: 1.5rem;
  background: linear-gradient(135deg, rgba(34, 211, 238, 0.08), rgba(59, 130, 246, 0.08));
  border: 1px solid var(--border-strong);
  border-radius: var(--radius);
  text-align: center;
}
.contact-cta-box h4 {
  font-size: 1.05rem;
  font-weight: 600;
  margin-bottom: 0.35rem;
  color: var(--text);
}
.contact-cta-box p {
  font-size: 0.9rem;
  color: var(--text-muted);
  margin-bottom: 1rem;
}
.contact-cta-box .btn { width: 100%; justify-content: center; }

/* FAQ */
.faq-list {
  display: flex;
  flex-direction: column;
  gap: 0.625rem;
}
.faq-item {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: border-color .15s;
}
.faq-item:hover,
.faq-item[open] { border-color: var(--border-strong); }
.faq-item summary {
  padding: 1rem 1.1rem;
  cursor: pointer;
  font-weight: 500;
  font-size: 0.975rem;
  color: var(--text);
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after {
  content: "+";
  font-size: 1.25rem;
  color: var(--accent);
  font-weight: 300;
  line-height: 1;
  transition: transform .2s;
  flex-shrink: 0;
}
.faq-item[open] summary::after { content: "−"; }
.faq-item p {
  padding: 0 1.1rem 1.1rem;
  color: var(--text-muted);
  font-size: 0.95rem;
  line-height: 1.65;
}
.faq-item p strong { color: var(--text); }

/* =======================================
   Footer
======================================= */
.site-footer {
  margin-top: auto;
  padding: 3rem 0 1.5rem;
  border-top: 1px solid var(--border);
  background: var(--bg-elev);
  color: var(--text-muted);
}
.footer-inner {
  display: grid;
  gap: 2.5rem;
  grid-template-columns: 1fr;
  padding-bottom: 2rem;
  border-bottom: 1px solid var(--border);
  margin-bottom: 1.25rem;
}
@media (min-width: 768px) {
  .footer-inner { grid-template-columns: 1.5fr 2fr; }
}
.footer-tagline {
  margin-top: 0.75rem;
  max-width: 320px;
  color: var(--text-dim);
}
.footer-cols {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 2rem;
}
.footer-cols h4 {
  color: var(--text);
  font-size: 0.95rem;
  font-weight: 600;
  margin-bottom: 0.75rem;
}
.footer-cols p {
  margin-bottom: 0.35rem;
  font-size: 0.925rem;
}
.footer-cols a { color: var(--text-muted); }
.footer-cols a:hover { color: var(--accent); }
.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 0.75rem;
  font-size: 0.85rem;
  color: var(--text-dim);
}

/* =======================================
   Reduced motion
======================================= */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}