/* İstanbul pages (/hizmet-bolgeleri/istanbul/kurumsal, /bireysel): same dark look as the district pages,
   with text colours that keep WCAG AA contrast on #0b1020. */
.ist-page { background: #0b1020; color: rgba(255,255,255,0.82); min-height: 100vh; }
.ist-page a { color: #93c5fd; }
.ist-page a:hover { color: #bfdbfe; }
/* links inside running text need more than colour to stand out (WCAG 1.4.1) */
.ist-page p a, .ist-page dd a, .ist-page li a:not([class]) { text-decoration: underline; text-underline-offset: 2px; }

.ist-hero { padding: 130px 0 48px; }
.ist-hero .breadcrumb { margin-bottom: 18px; font-size: 0.85rem; }
.ist-hero .breadcrumb-item, .ist-hero .breadcrumb-item a, .ist-hero .breadcrumb-item::before { color: rgba(255,255,255,0.7); }
.ist-hero .breadcrumb-item.active { color: #fff; }
.ist-hero-grid { display: grid; gap: 32px; align-items: start; }
@media (min-width: 992px) { .ist-hero-grid { grid-template-columns: 1.15fr 0.85fr; gap: 48px; } }
.ist-eyebrow { display: inline-block; font-family: 'Montserrat', sans-serif; font-size: 0.8rem; font-weight: 700; letter-spacing: 0.06em; text-transform: uppercase; color: #93c5fd; background: rgba(59,130,246,0.12); border: 1px solid rgba(96,165,250,0.3); border-radius: 999px; padding: 6px 14px; margin-bottom: 18px; }
.ist-hero h1 { font-family: 'Montserrat', sans-serif; font-size: clamp(2rem, 4.2vw, 3rem); font-weight: 800; color: #fff; line-height: 1.15; margin-bottom: 18px; }
.ist-hero h1 span { display: block; font-size: 0.55em; font-weight: 700; color: #93c5fd; margin-top: 8px; }
.ist-lead { font-size: 1.08rem; line-height: 1.75; color: rgba(255,255,255,0.82); margin-bottom: 24px; }
.ist-cta { display: flex; flex-wrap: wrap; gap: 12px; margin-bottom: 22px; }
.ist-btn { display: inline-flex; align-items: center; gap: 8px; font-family: 'Montserrat', sans-serif; font-weight: 700; font-size: 0.95rem; border-radius: 12px; padding: 13px 20px; text-decoration: none; border: 1px solid transparent; transition: background 0.2s, border-color 0.2s; }
.ist-page a.ist-btn-call, .ist-btn-call { background: #2563eb; color: #fff; }
.ist-page a.ist-btn-call:hover { background: #1d4ed8; color: #fff; }
.ist-page a.ist-btn-wa, .ist-btn-wa { background: #15803d; color: #fff; }
.ist-page a.ist-btn-wa:hover { background: #166534; color: #fff; }
.ist-page a.ist-btn-ghost, .ist-btn-ghost { background: transparent; color: #fff; border-color: rgba(255,255,255,0.3); }
.ist-page a.ist-btn-ghost:hover { border-color: #93c5fd; color: #fff; }
.ist-chips { list-style: none; padding: 0; margin: 0; display: flex; flex-wrap: wrap; gap: 8px; }
.ist-chips li { font-size: 0.85rem; color: rgba(255,255,255,0.85); background: rgba(255,255,255,0.05); border: 1px solid rgba(255,255,255,0.1); border-radius: 999px; padding: 6px 12px; }
.ist-chips li i { color: #60a5fa; margin-right: 4px; }
.ist-notice { margin-top: 18px; font-size: 0.9rem; color: rgba(255,255,255,0.78); border-left: 3px solid #60a5fa; padding: 4px 0 4px 12px; }

/* callback form */
.ist-form { background: rgba(255,255,255,0.04); border: 1px solid rgba(255,255,255,0.1); border-radius: 18px; padding: 24px; }
.ist-form h2 { font-family: 'Montserrat', sans-serif; font-size: 1.25rem; font-weight: 700; color: #fff; margin-bottom: 6px; }
.ist-form > p { font-size: 0.9rem; color: rgba(255,255,255,0.72); margin-bottom: 16px; }
.ist-form label { display: block; font-size: 0.85rem; font-weight: 600; color: rgba(255,255,255,0.88); margin-bottom: 4px; }
.ist-form input, .ist-form select, .ist-form textarea { width: 100%; background: #0f172a; color: #fff; border: 1px solid rgba(255,255,255,0.18); border-radius: 10px; padding: 10px 12px; font-size: 0.95rem; }
.ist-form input:focus, .ist-form select:focus, .ist-form textarea:focus { outline: 2px solid #60a5fa; outline-offset: 1px; border-color: #60a5fa; }
.ist-form select option, .ist-form select optgroup { background: #0f172a; color: #fff; }
.ist-form .ist-field { margin-bottom: 12px; }
.ist-form .ist-row { display: grid; gap: 12px; }
@media (min-width: 576px) { .ist-form .ist-row { grid-template-columns: 1fr 1fr; } }
.ist-form .ist-req { color: #fca5a5; }
.ist-form .ist-err { display: block; font-size: 0.8rem; color: #fca5a5; margin-top: 4px; }
.ist-form button[type="submit"] { width: 100%; border: 0; margin-top: 4px; justify-content: center; }
.ist-form button[disabled] { opacity: 0.7; cursor: wait; }
.ist-form .ist-kvkk { font-size: 0.78rem; color: rgba(255,255,255,0.68); margin: 10px 0 0; line-height: 1.5; }
.ist-form .ist-status { margin-top: 12px; font-size: 0.92rem; }
.ist-form .ist-status.ok { color: #86efac; }
.ist-form .ist-status.fail { color: #fca5a5; }
.ist-hp { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }

/* sections */
.ist-section { padding: 36px 0; }
.ist-section h2 { font-family: 'Montserrat', sans-serif; font-size: clamp(1.35rem, 2.6vw, 1.75rem); font-weight: 800; color: #fff; margin-bottom: 10px; }
.ist-section .ist-answer { font-size: 1.02rem; line-height: 1.75; color: rgba(255,255,255,0.84); max-width: 860px; margin-bottom: 22px; }
.ist-section p { line-height: 1.75; }
.ist-box { background: rgba(255,255,255,0.03); border: 1px solid rgba(255,255,255,0.08); border-radius: 18px; padding: 24px; }

.ist-facts { display: grid; gap: 0; margin: 0; }
@media (min-width: 768px) { .ist-facts { grid-template-columns: 220px 1fr; } }
.ist-facts dt { font-weight: 700; color: #fff; padding: 10px 0 2px; }
.ist-facts dd { margin: 0; padding: 0 0 10px; color: rgba(255,255,255,0.84); border-bottom: 1px solid rgba(255,255,255,0.06); }
@media (min-width: 768px) { .ist-facts dt, .ist-facts dd { padding: 11px 0; border-bottom: 1px solid rgba(255,255,255,0.06); } }
.ist-updated { font-size: 0.85rem; color: rgba(255,255,255,0.65); margin-top: 14px; }

.ist-cards { display: grid; gap: 14px; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); }
.ist-card { background: rgba(255,255,255,0.03); border: 1px solid rgba(255,255,255,0.08); border-radius: 16px; padding: 22px; }
.ist-card .ist-icon { width: 44px; height: 44px; border-radius: 12px; display: inline-flex; align-items: center; justify-content: center; background: rgba(59,130,246,0.14); color: #60a5fa; font-size: 1.3rem; margin-bottom: 12px; }
.ist-card h3 { font-family: 'Montserrat', sans-serif; font-size: 1.05rem; font-weight: 700; color: #fff; margin-bottom: 8px; }
.ist-card p { font-size: 0.93rem; color: rgba(255,255,255,0.78); margin-bottom: 10px; }
.ist-card ul { padding-left: 18px; margin: 0 0 10px; font-size: 0.9rem; color: rgba(255,255,255,0.78); }
.ist-card .ist-more { font-size: 0.88rem; font-weight: 600; }

.ist-table { width: 100%; border-collapse: collapse; font-size: 0.95rem; }
.ist-table th, .ist-table td { padding: 10px 12px; border-bottom: 1px solid rgba(255,255,255,0.08); text-align: left; vertical-align: top; }
.ist-table th { color: #fff; font-weight: 700; }
.ist-table td { color: rgba(255,255,255,0.84); }
.ist-tag { display: inline-block; font-size: 0.8rem; font-weight: 700; border-radius: 999px; padding: 3px 10px; }
.ist-tag-site { background: rgba(34,197,94,0.15); color: #86efac; }
.ist-tag-lab { background: rgba(251,191,36,0.15); color: #fcd34d; }

/* coverage */
.ist-coverage { display: grid; gap: 24px; align-items: start; }
@media (min-width: 992px) {
    .ist-coverage { grid-template-columns: 1.1fr 0.9fr; }
    .ist-coverage > figure { position: sticky; top: 110px; } /* the district lists are much taller than the map */
}
.ist-map { width: 100%; height: auto; display: block; border-radius: 16px; background: #0b1020; border: 1px solid rgba(255,255,255,0.08); }
.ist-map-note { font-size: 0.82rem; color: rgba(255,255,255,0.65); margin-top: 8px; }
.ist-zone h3 { font-family: 'Montserrat', sans-serif; font-size: 1rem; font-weight: 700; color: #fff; margin: 0 0 10px; }
.ist-zone + .ist-zone { margin-top: 22px; }
.ist-zone-list { list-style: none; padding: 0; margin: 0; display: grid; gap: 8px; grid-template-columns: repeat(auto-fill, minmax(190px, 1fr)); }
.ist-zone-list a { display: flex; justify-content: space-between; gap: 8px; text-decoration: none; background: rgba(255,255,255,0.04); border: 1px solid rgba(255,255,255,0.08); border-radius: 10px; padding: 10px 12px; color: #fff; font-weight: 600; font-size: 0.92rem; }
.ist-zone-list a:hover { border-color: rgba(96,165,250,0.6); color: #fff; }
.ist-zone-list .km { color: rgba(255,255,255,0.65); font-weight: 500; white-space: nowrap; }
.ist-zone-list.core a { border-color: rgba(96,165,250,0.35); background: rgba(59,130,246,0.08); }
.ist-hoods { font-size: 0.9rem; color: rgba(255,255,255,0.75); margin: 10px 0 0; }

.ist-steps { list-style: none; padding: 0; margin: 0; display: grid; gap: 14px; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); counter-reset: step; }
.ist-steps li { counter-increment: step; background: rgba(255,255,255,0.03); border: 1px solid rgba(255,255,255,0.08); border-radius: 16px; padding: 20px; color: rgba(255,255,255,0.8); font-size: 0.93rem; }
.ist-steps li::before { content: counter(step); display: inline-flex; align-items: center; justify-content: center; width: 30px; height: 30px; border-radius: 50%; background: #2563eb; color: #fff; font-weight: 800; margin-bottom: 10px; }
.ist-steps strong { display: block; color: #fff; font-size: 1rem; margin-bottom: 4px; }

.ist-faq details { border: 1px solid rgba(255,255,255,0.08); border-radius: 12px; margin-bottom: 8px; background: rgba(255,255,255,0.02); }
.ist-faq summary { cursor: pointer; list-style: none; padding: 15px 18px; font-weight: 700; color: #fff; display: flex; justify-content: space-between; gap: 12px; }
.ist-faq summary::-webkit-details-marker { display: none; }
.ist-faq summary::after { content: "+"; color: #60a5fa; font-weight: 800; }
.ist-faq details[open] summary::after { content: "–"; }
.ist-faq .ist-faq-a { padding: 0 18px 16px; color: rgba(255,255,255,0.82); line-height: 1.7; }

.ist-band { background: linear-gradient(135deg, rgba(37,99,235,0.18), rgba(14,165,233,0.12)); border: 1px solid rgba(96,165,250,0.25); border-radius: 20px; padding: 32px; text-align: center; }
.ist-band h2 { margin-bottom: 8px; }
.ist-band p { color: rgba(255,255,255,0.84); margin-bottom: 18px; }
.ist-band .ist-cta { justify-content: center; margin-bottom: 0; }

/* sticky call bar on phones (the floating WhatsApp button would duplicate it) */
.ist-mobile-bar { display: none; }
@media (max-width: 767.98px) {
    .ist-mobile-bar { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; position: fixed; left: 0; right: 0; bottom: 0; z-index: 1000; padding: 10px 12px calc(10px + env(safe-area-inset-bottom)); background: rgba(11,16,32,0.96); border-top: 1px solid rgba(255,255,255,0.1); }
    .ist-mobile-bar .ist-btn { justify-content: center; padding: 12px 10px; }
    .ist-page { padding-bottom: 76px; }
    body:has(.ist-mobile-bar) .whatsapp-btn { display: none; }
    body:has(.ist-mobile-bar) .live-support-widget { bottom: 88px; }
}

@media (prefers-reduced-motion: reduce) { .ist-btn, .ist-zone-list a { transition: none; } }