/* ============================================================
   Ayveri.com — Editoryal · Güvenilir · Asimetrik
   Tasarım sistemi: ryanthedev/design-for-ai kuralları uygulandı
   - Oran tabanlı (3:4) tipografi ölçeği
   - Mavi-tonlu, katmanlı gölgeler (saf siyah YOK)
   - Tonlanmış nötrler (saf siyah/beyaz metin YOK)
   - Grup-içi sıkı / gruplar-arası ferah boşluk ritmi
   - 8 etkileşim durumu, :focus-visible, reduced-motion
   - Motion: 100/300/500 süre kuralı, exponential easing
   Marka: Tac One logo en büyük yazı; lacivert/yeşil; tek telefon
   ============================================================ */

*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* --- Marka renkleri --- */
    --primary-blue: #0A2463;
    --secondary-blue: #1E3A8A;
    --light-blue: #3B82F6;
    --accent-blue: #60A5FA;
    --sky-blue: #0EA5E9;
    --cloud-blue: #38BDF8;
    --green: #10B981;
    --green-dark: #059669;
    --whatsapp: #25D366;
    /* --- Sıcak vurgu (koyu turuncu / kırmızıya yakın) — warm/cool depth ---
       Not: sarı tonlar bilinçli olarak kullanılmadı (lacivert+sarı çağrışımı). */
    --amber: #EA580C;        /* koyu turuncu */
    --sun: #F97316;          /* canlı turuncu (vurgu metni) */
    --amber-dark: #C2410C;   /* en koyu turuncu (eyebrow yazı) */
    --warm-grad: linear-gradient(135deg, #F97316, #EA580C);

    /* --- Tonlanmış nötrler (saf siyah/beyaz yok) --- */
    --white: #FFFFFF;
    --paper: #FBFCFE;        /* hafif soğuk beyaz arka plan */
    --ink: #0F1B3D;          /* lacivert mürekkep (gövde metni) */
    --ink-soft: #475677;     /* serin gri-mavi (ikincil metin) */
    --ink-faint: #8492AD;    /* en açık metin (üst-başlık, meta) */
    --line: #E4EAF3;         /* ince ayraç çizgisi */
    --gray-light: #F2F6FC;

    /* --- Oran tabanlı (3:4) tipografi ölçeği ---
       techniques.md: 16, 21, 28, 37, 50 ... (×~1.33)
       Logo 3.6rem en büyük yazı kalır; h1 = 2.3125rem */
    --t-meta:  0.8125rem;   /* 13 */
    --t-small: 0.9375rem;   /* 15 */
    --t-body:  1rem;        /* 16 */
    --t-lead:  1.3125rem;   /* 21 */
    --t-h3:    1.3125rem;   /* 21 */
    --t-h2:    1.75rem;     /* 28 */
    --t-h1:    2.3125rem;   /* 37 */

    /* --- Boşluk ritmi --- */
    --sp-1: 0.5rem;
    --sp-2: 0.875rem;
    --sp-3: 1.25rem;
    --sp-4: 2rem;
    --sp-5: 3rem;
    --sp-6: 4.5rem;

    /* --- Yarıçap --- */
    --r-sm: 8px;
    --r-md: 14px;
    --r-lg: 20px;
    --r-pill: 50px;

    /* --- Mavi-tonlu, katmanlı gölgeler (derinlik hiyerarşisi) --- */
    --sh-1: 0 1px 3px rgba(10, 36, 99, 0.06), 0 1px 2px rgba(10, 36, 99, 0.04);
    --sh-2: 0 6px 18px rgba(10, 36, 99, 0.08);
    --sh-3: 0 14px 36px rgba(10, 36, 99, 0.14);
    --sh-4: 0 24px 60px rgba(10, 36, 99, 0.20);

    /* --- Motion (motion.md): 100/300/500 + exponential easing --- */
    --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
    --ease-inout: cubic-bezier(0.65, 0, 0.35, 1);
    --dur-fast: 100ms;
    --dur-base: 300ms;

    --container: 1180px;
}

html { scroll-behavior: smooth; }

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.65;
    color: var(--ink);
    background: var(--paper);
    -webkit-font-smoothing: antialiased;
    text-rendering: optimizeLegibility;
}

.container {
    max-width: var(--container);
    margin: 0 auto;
    padding: 0 24px;
}

/* Erişilebilir focus — :focus-visible, 3:1 kontrast (interaction.md) */
a:focus-visible,
button:focus-visible,
input:focus-visible,
textarea:focus-visible,
select:focus-visible,
.service-card:focus-within {
    outline: 3px solid var(--light-blue);
    outline-offset: 3px;
    border-radius: var(--r-sm);
}

/* "İçeriğe geç" — klavye/ekran okuyucu erişilebilirliği */
.skip-link {
    position: absolute;
    left: -9999px;
    top: 0;
    background: var(--primary-blue);
    color: #fff;
    padding: 10px 18px;
    border-radius: 0 0 var(--r-sm) 0;
    z-index: 100;
}
.skip-link:focus {
    left: 0;
}

/* Üst-başlık etiketi (editoryal imza) */
.eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: var(--t-meta);
    font-weight: 700;
    letter-spacing: 1.5px;
    text-transform: uppercase;
    color: var(--amber-dark);            /* sıcak vurgu */
}
.eyebrow::before {
    content: "";
    width: 26px;
    height: 2px;
    background: linear-gradient(90deg, var(--amber), transparent);
}

/* ============================================================
   HEADER (beyaz şerit) — koyu banner üstünde
   ============================================================ */
header {
    position: relative;
    z-index: 5;
    padding: 16px 0;
    background: var(--white);
    box-shadow: var(--sh-1);
}

.header-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;          /* tek satır — dikey ortala */
    gap: 32px;
}

.logo {
    display: inline-flex;
    align-items: center;
    font-family: 'Tac One', cursive;
    font-weight: 400;
    font-size: 3.6rem;          /* sitedeki EN BÜYÜK yazı (kural) */
    letter-spacing: 2px;
    color: var(--primary-blue);
    text-decoration: none;
    line-height: 1;
    transition: color var(--dur-base) var(--ease-out),
                transform var(--dur-base) var(--ease-out);
}
.logo:hover { color: var(--secondary-blue); transform: translateY(-1px); }
.logo:active { transform: translateY(0); }

/* Sağ blok: sosyal + WhatsApp (tek satır) — menüden ayraçla ayrılır */
.header-actions {
    display: flex;
    align-items: center;
    gap: 18px;
    flex-shrink: 0;
    padding-left: 22px;
    margin-left: 4px;
    border-left: 1px solid var(--line);
}

.social-icons {
    display: flex;
    list-style: none;
    gap: 12px;
    align-items: center;
}
.social-icons a {
    color: var(--primary-blue);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 30px; height: 30px;     /* dokunma hedefi */
    border-radius: 50%;
    transition: color var(--dur-base) var(--ease-out),
                background var(--dur-base) var(--ease-out),
                transform var(--dur-fast) var(--ease-out);
}
.social-icons a:hover { color: var(--sky-blue); background: var(--gray-light); transform: translateY(-2px); }
.social-icons a:active { transform: translateY(0) scale(0.96); }
.social-icons svg { width: 16px; height: 16px; }

.header-phone {
    color: var(--primary-blue);
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-weight: 700;
    font-size: var(--t-small);
    transition: color var(--dur-base) var(--ease-out);
}
.header-phone:hover { color: var(--sky-blue); }
.header-phone svg { width: 16px; height: 16px; }

/* WhatsApp: resmi renkli logo (yeşil daire + beyaz ahize) + numara */
.header-wa svg { width: 22px; height: 22px; transition: transform var(--dur-fast) var(--ease-out); }
.header-wa:hover { color: #1da851; }
.header-wa:hover svg { transform: scale(1.1); }

/* Ana menü — sağa yaslı, iletişim grubuyla birlikte tek blok */
.nav-menu {
    flex: 1;
    display: flex;
    justify-content: flex-end;
    align-items: center;
    padding-left: 26px;
    margin-left: 26px;
    border-left: 1px solid var(--line);   /* logodan ince ayraç */
}
.nav-menu ul {
    display: flex;
    list-style: none;
    gap: 1.5rem;
    flex-wrap: nowrap;          /* tek satır — alta kaymasın */
    white-space: nowrap;
}
.nav-menu a {
    position: relative;
    text-decoration: none;
    color: var(--primary-blue);
    font-weight: 600;
    font-size: 0.875rem;
    letter-spacing: 0.2px;
    padding: 4px 0;
    transition: color var(--dur-base) var(--ease-out);
}
/* hover/aktif sayfa için alt çizgi (state diferansiyasyonu) */
.nav-menu a::after {
    content: "";
    position: absolute;
    left: 0; bottom: -2px;
    width: 100%; height: 2px;
    background: var(--warm-grad);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform var(--dur-base) var(--ease-out);
}
.nav-menu a:hover { color: var(--amber); }
.nav-menu a:hover::after,
.nav-menu a[aria-current="page"]::after { transform: scaleX(1); }
.nav-menu a[aria-current="page"] { color: var(--amber); }

/* Mobil menü düğmesi (varsayılan gizli) */
.nav-toggle {
    display: none;
    background: none;
    border: 1px solid var(--line);
    border-radius: var(--r-sm);
    padding: 8px;
    cursor: pointer;
    color: var(--primary-blue);
}
.nav-toggle svg { width: 22px; height: 22px; display: block; }

/* ============================================================
   BUTONLAR — Primary / Secondary / Tertiary, 8 durum
   ============================================================ */
.btn-cta, .btn-secondary, .btn-ghost {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 14px 30px;
    min-height: 44px;            /* dokunma hedefi 44px */
    text-decoration: none;
    border-radius: var(--r-pill);
    font-weight: 600;
    font-size: var(--t-small);
    font-family: inherit;
    cursor: pointer;
    border: 2px solid transparent;
    transition: transform var(--dur-fast) var(--ease-out),
                box-shadow var(--dur-base) var(--ease-out),
                background var(--dur-base) var(--ease-out),
                color var(--dur-base) var(--ease-out);
}
.btn-cta svg, .btn-secondary svg, .btn-ghost svg { width: 16px; height: 16px; }

/* Primary — yeşil dolgu, soğuk-tonlu (yeşil) gölge */
.btn-cta {
    background: var(--green);
    color: #fff;
    box-shadow: 0 8px 20px rgba(16, 185, 129, 0.28);
}
.btn-cta:hover { background: var(--green-dark); transform: translateY(-2px); box-shadow: 0 12px 28px rgba(16, 185, 129, 0.38); }
.btn-cta:active { transform: translateY(0) scale(0.98); box-shadow: 0 6px 16px rgba(16, 185, 129, 0.3); }
.btn-cta:disabled, .btn-cta[aria-disabled="true"] { opacity: 0.55; cursor: not-allowed; transform: none; box-shadow: none; }

/* Secondary — lacivert kontur */
.btn-secondary {
    background: transparent;
    color: var(--primary-blue);
    border-color: var(--primary-blue);
}
.btn-secondary:hover { background: var(--primary-blue); color: #fff; transform: translateY(-2px); }
.btn-secondary:active { transform: translateY(0) scale(0.98); }

/* Tertiary — sadece metin */
.btn-ghost {
    background: transparent;
    color: var(--primary-blue);
    padding-left: 6px; padding-right: 6px;
}
.btn-ghost:hover { color: var(--sky-blue); gap: 14px; }

/* ============================================================
   HERO / BANNER — koyu zemin, tek güçlü odak noktası
   ============================================================ */
.hero-wrap {
    background:
        radial-gradient(60% 80% at 95% 15%, rgba(249,115,22,0.30), transparent 60%),   /* sıcak gün doğumu parıltısı */
        linear-gradient(115deg, rgba(6, 22, 53, 0.80) 0%, rgba(10, 36, 99, 0.55) 45%, rgba(14, 45, 110, 0.28) 100%),
        url('../images/hero-bg.jpg') center / cover no-repeat;
    position: relative;
    overflow: hidden;
    color: var(--white);
}

.hero {
    padding: 64px 0 96px;
    position: relative;
    z-index: 1;
}
.hero-grid {
    display: grid;
    grid-template-columns: 1.05fr 0.95fr;
    align-items: center;
    gap: 56px;
}
.hero-text .eyebrow { color: var(--cloud-blue); margin-bottom: var(--sp-3); }
.hero-text .eyebrow::before { background: linear-gradient(90deg, var(--cloud-blue), transparent); }

.hero-text h1 {
    font-size: var(--t-h1);          /* odak: en büyük sayfa yazısı (logodan küçük) */
    font-weight: 800;
    line-height: 1.12;
    letter-spacing: -0.6px;
    margin-bottom: var(--sp-3);
    animation: fadeInUp 0.7s var(--ease-out) both;
}
.hero-sub {
    font-size: var(--t-lead);
    font-weight: 300;
    opacity: 0.92;
    margin-bottom: var(--sp-2);
    animation: fadeInUp 0.7s var(--ease-out) 0.06s both;
}
.hero-desc {
    font-size: var(--t-body);
    line-height: 1.8;
    opacity: 0.85;
    margin-bottom: var(--sp-4);
    max-width: 52ch;
    animation: fadeInUp 0.7s var(--ease-out) 0.12s both;
}
.hero-badges {
    list-style: none;
    display: flex;
    flex-wrap: wrap;
    gap: 10px 24px;
    margin: 0 0 var(--sp-4);
    animation: fadeInUp 0.7s var(--ease-out) 0.18s both;
}
.hero-badges li {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: var(--t-small);
    font-weight: 600;
    opacity: 0.96;
}
.hero-badges svg { width: 18px; height: 18px; color: var(--green); flex-shrink: 0; }

.hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 14px;
    align-items: center;
    animation: fadeInUp 0.7s var(--ease-out) 0.24s both;
}
.hero-actions .btn-secondary { color: #fff; border-color: rgba(255,255,255,0.55); }
.hero-actions .btn-secondary:hover { background: #fff; color: var(--primary-blue); border-color: #fff; }

.hero-illustration {
    display: flex;
    justify-content: center;
    align-items: center;
    animation: fadeInUp 0.8s var(--ease-out) 0.2s both;
}

/* --- Yeni hero görseli: tarayıcı penceresi + hizmet çipleri --- */
.hero-visual {
    position: relative;
    width: 100%;
    max-width: 460px;
    aspect-ratio: 1 / 0.92;
}
.hv-window {
    position: absolute;
    top: 12%; left: 8%;
    width: 84%;
    background: #fff;
    border-radius: 14px;
    box-shadow: 0 30px 60px rgba(0,0,0,0.35);
    overflow: hidden;
}
.hv-bar {
    display: flex;
    gap: 6px;
    padding: 10px 14px;
    background: #EEF2F8;
}
.hv-bar span { width: 9px; height: 9px; border-radius: 50%; background: #CBD5E1; }
.hv-bar span:nth-child(1) { background: #EF4444; }
.hv-bar span:nth-child(2) { background: #F97316; }
.hv-bar span:nth-child(3) { background: #10B981; }
.hv-screen { padding: 14px; }
.hv-screen svg { width: 100%; height: auto; display: block; }

/* yüzen hizmet çipleri */
.hv-chip {
    position: absolute;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: #fff;
    color: var(--primary-blue);
    font-size: 0.8rem;
    font-weight: 700;
    padding: 9px 14px;
    border-radius: var(--r-pill);
    box-shadow: 0 12px 26px rgba(0,0,0,0.22);
    white-space: nowrap;
    animation: floatY 4s var(--ease-inout) infinite;
}
.hv-chip svg { width: 16px; height: 16px; }
.hv-chip--1 { top: 4%;   left: -4%;  color: var(--sky-blue); animation-delay: 0s; }
.hv-chip--2 { top: 30%;  right: -8%; color: var(--amber);    animation-delay: 0.6s; }
.hv-chip--3 { bottom: 18%; left: -6%; color: var(--green);   animation-delay: 1.2s; }
.hv-chip--4 { bottom: 4%; right: 6%;  color: #8B5CF6;        animation-delay: 1.8s; }

@keyframes floatY {
    0%, 100% { transform: translateY(0); }
    50%      { transform: translateY(-9px); }
}

/* ============================================================
   SAYFA BAŞLIĞI (iç sayfalar) — koyu editoryal şerit
   ============================================================ */
.page-hero {
    background:
        radial-gradient(85% 130% at 100% 0%, rgba(249,115,22,0.30), transparent 55%),   /* sıcak parıltı (sağ üst) */
        radial-gradient(100% 130% at 0% 100%, rgba(56,189,248,0.16), transparent 55%),
        linear-gradient(120deg, var(--primary-blue) 0%, var(--secondary-blue) 100%);
    color: #fff;
    padding: 72px 0 64px;
    position: relative;
    overflow: hidden;
    border-bottom: 4px solid transparent;
    border-image: var(--warm-grad) 1;             /* alt kenarda sıcak çizgi */
}
.page-hero::after {            /* imza: ince köşegen ızgara dokusu */
    content: "";
    position: absolute;
    inset: 0;
    background-image: linear-gradient(90deg, rgba(255,255,255,0.05) 1px, transparent 1px);
    background-size: 64px 100%;
    opacity: 0.6;
    pointer-events: none;
}
.page-hero .eyebrow { color: var(--sun); margin-bottom: 14px; position: relative; z-index: 1; }
.page-hero .eyebrow::before { background: linear-gradient(90deg, var(--sun), transparent); }
.page-hero h1 {
    font-size: var(--t-h1);
    font-weight: 800;
    letter-spacing: -0.5px;
    line-height: 1.1;
    position: relative;
    z-index: 1;
    animation: fadeInUp 0.6s var(--ease-out) both;
}
.page-hero p {
    margin-top: 14px;
    max-width: 60ch;
    opacity: 0.88;
    font-size: var(--t-body);
    position: relative;
    z-index: 1;
    animation: fadeInUp 0.6s var(--ease-out) 0.08s both;
}
.breadcrumb {
    display: flex;
    gap: 8px;
    list-style: none;
    margin-top: 18px;
    font-size: var(--t-meta);
    opacity: 0.8;
    position: relative;
    z-index: 1;
}
.breadcrumb a { color: #fff; text-decoration: none; }
.breadcrumb a:hover { text-decoration: underline; }
.breadcrumb li:not(:last-child)::after { content: "/"; margin-left: 8px; opacity: 0.5; }

/* ============================================================
   BÖLÜM ORTAK
   ============================================================ */
.section { padding: 3rem 0; }                 /* bölümler arası daha derli toplu */
.section + .section { padding-top: 1.5rem; }   /* ardışık bölümlerde üst boşluğu kıs */
.section--tint { background: var(--white); }

.section-head { margin-bottom: var(--sp-5); max-width: 64ch; }
.section-head.center { margin-left: auto; margin-right: auto; text-align: center; }
.section-title {
    font-size: var(--t-h2);
    font-weight: 800;
    letter-spacing: -0.4px;
    color: var(--ink);
    margin-top: 12px;
}
.section-title.center { text-align: center; }
.section-intro { color: var(--ink-soft); margin-top: 14px; font-size: var(--t-body); }

/* imza: başlık altı vurgu çizgisi */
.accent-rule {
    width: 56px; height: 4px; border-radius: 2px;
    background: linear-gradient(90deg, var(--primary-blue), var(--amber));  /* soğuk→sıcak geçiş */
    margin-top: 16px;
}
.accent-rule.center { margin-left: auto; margin-right: auto; }

/* ============================================================
   HİZMET IZGARASI — asimetrik (özdeş 6-kart "AI-tell"i kırılır)
   ============================================================ */
.services-grid {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: var(--sp-3);
    align-items: stretch;
}
.service-card {
    grid-column: span 2;            /* 6 sütun / span 2 = satır başına 3 eşit kart */
    display: flex;
    flex-direction: column;
    background: var(--white);
    padding: 26px 24px;
    border-radius: var(--r-md);
    border: 1px solid var(--line);
    text-align: left;                /* AI-tell: ortalamayı bırak */
    text-decoration: none;           /* kart tıklanabilir <a> */
    box-shadow: var(--sh-1);
    transition: transform var(--dur-base) var(--ease-out),
                box-shadow var(--dur-base) var(--ease-out),
                border-color var(--dur-base) var(--ease-out);
}

.service-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--sh-3);
    border-color: var(--cloud-blue);
}
.service-card:active { transform: translateY(-2px); }

.service-icon {
    width: 56px;
    height: 56px;
    margin: 0 0 16px;
    background: linear-gradient(135deg, var(--sky-blue), var(--cloud-blue));
    border-radius: var(--r-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 8px 18px rgba(14, 165, 233, 0.28);  /* soğuk-tonlu gölge */
}
.service-icon svg { width: 28px; height: 28px; }
.service-icon svg [stroke="white"] { stroke: #fff; }
.service-card h3 { font-size: var(--t-h3); color: var(--ink); margin-bottom: 8px; font-weight: 700; }
.service-card p { color: var(--ink-soft); font-size: var(--t-small); line-height: 1.7; }

/* ============================================================
   ÖZELLİK LİSTESİ (split: metin + madde) — kart kalıbına alternatif
   ============================================================ */
.split {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--sp-6);
    align-items: center;
}
.split.reverse .split-media { order: -1; }
.feature-list { list-style: none; display: grid; gap: 18px; margin-top: var(--sp-3); }
.feature-list li { display: grid; grid-template-columns: auto 1fr; gap: 14px; align-items: start; }
.feature-list .tick {
    width: 28px; height: 28px; flex-shrink: 0;
    background: rgba(16,185,129,0.12);
    color: var(--green);
    border-radius: 50%;
    display: grid; place-items: center;
}
.feature-list .tick svg { width: 15px; height: 15px; }
.feature-list h4 { font-size: var(--t-body); color: var(--ink); margin-bottom: 2px; }
.feature-list p { color: var(--ink-soft); font-size: var(--t-small); }

.split-media {
    border-radius: var(--r-lg);
    overflow: hidden;
    background: linear-gradient(135deg, var(--primary-blue), var(--secondary-blue));
    min-height: 240px;
    aspect-ratio: 16 / 11;
    display: grid;
    place-items: center;
    box-shadow: var(--sh-2);
    position: relative;
}
.split-media svg { width: 38%; max-width: 150px; height: auto; }

/* "Neden Ayveri" görseli — mini hizmet kartları + merkez rozet */
.why-visual {
    border-radius: var(--r-lg);
    background:
        radial-gradient(90% 120% at 100% 0%, rgba(249,115,22,0.18), transparent 55%),
        linear-gradient(135deg, var(--primary-blue), var(--secondary-blue));
    padding: 26px;
    box-shadow: var(--sh-2);
}
.why-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 14px;
    position: relative;
}
.why-tile {
    background: rgba(255,255,255,0.08);
    border: 1px solid rgba(255,255,255,0.12);
    border-radius: var(--r-md);
    padding: 18px 16px;
    display: flex;
    flex-direction: column;
    gap: 10px;
    color: #fff;
    transition: transform var(--dur-base) var(--ease-out), background var(--dur-base) var(--ease-out);
}
.why-tile:hover { transform: translateY(-3px); background: rgba(255,255,255,0.13); }
.why-tile svg { width: 24px; height: 24px; color: var(--cloud-blue); }
.why-tile:nth-child(2) svg { color: var(--green); }
.why-tile:nth-child(4) svg { color: var(--sun); }
.why-tile:nth-child(5) svg { color: #C4B5FD; }
.why-tile span { font-size: 0.85rem; font-weight: 600; }
/* merkez rozet — 2x2'nin ortasına oturur */
.why-core {
    grid-column: 1 / -1;
    order: 0;
    margin: 4px 0;
    background: var(--warm-grad);
    border-radius: var(--r-md);
    padding: 16px;
    text-align: center;
    color: #fff;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
    box-shadow: 0 10px 24px rgba(234,88,12,0.35);
}
.why-core svg { width: 30px; height: 30px; color: #fff; }
.why-core strong { font-size: 1.1rem; font-weight: 800; }
.why-core small { font-size: 0.78rem; opacity: 0.9; }

/* ============================================================
   İSTATİSTİK ŞERİDİ — kart yerine yatay ölçüler
   ============================================================ */
.stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--sp-3);
    padding: var(--sp-4);
    background: linear-gradient(120deg, var(--primary-blue), var(--secondary-blue));
    border-radius: var(--r-lg);
    color: #fff;
    box-shadow: var(--sh-3);
}
.stat { text-align: center; }
.stat .num { font-size: var(--t-h2); font-weight: 800; line-height: 1; color: var(--sun); }  /* sıcak vurgu */
.stat .lbl { font-size: var(--t-meta); opacity: 0.85; margin-top: 8px; letter-spacing: 0.5px; text-transform: uppercase; }
.stat + .stat { border-left: 1px solid rgba(255,255,255,0.15); }

/* ============================================================
   DEĞER KARTLARI (hakkımızda)
   ============================================================ */
.values-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--sp-3);
    margin-top: var(--sp-4);
}
.value-card {
    background: var(--white);
    padding: 30px 26px;
    border-radius: var(--r-md);
    border: 1px solid var(--line);
    box-shadow: var(--sh-1);
    transition: transform var(--dur-base) var(--ease-out),
                box-shadow var(--dur-base) var(--ease-out),
                border-color var(--dur-base) var(--ease-out);
}
.value-card:hover { transform: translateY(-4px); box-shadow: var(--sh-2); border-color: var(--accent-blue); }
.value-icon {
    width: 56px; height: 56px; margin-bottom: 18px;
    background: linear-gradient(135deg, var(--light-blue), var(--accent-blue));
    border-radius: var(--r-sm);
    display: grid; place-items: center;
    box-shadow: 0 8px 18px rgba(59,130,246,0.26);
}
.value-icon svg { width: 26px; height: 26px; }
.value-card h3 { font-size: var(--t-h3); color: var(--ink); margin-bottom: 8px; }
.value-card p { color: var(--ink-soft); font-size: var(--t-small); }

/* ============================================================
   REFERANS / PROJE KARTLARI
   ============================================================ */
.work-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--sp-3);
}
.work-card {
    background: var(--white);
    border-radius: var(--r-md);
    border: 1px solid var(--line);
    overflow: hidden;
    box-shadow: var(--sh-1);
    transition: transform var(--dur-base) var(--ease-out),
                box-shadow var(--dur-base) var(--ease-out);
}
.work-card:hover { transform: translateY(-5px); box-shadow: var(--sh-3); }
.work-thumb { aspect-ratio: 16 / 10; display: grid; place-items: center; color: #fff; }
.work-thumb svg { width: 64px; height: 64px; opacity: 0.95; }
.work-body { padding: 22px 24px; }
.work-tag { font-size: var(--t-meta); font-weight: 700; letter-spacing: 1px; text-transform: uppercase; color: var(--sky-blue); }
.work-body h3 { font-size: var(--t-h3); color: var(--ink); margin: 8px 0; }
.work-body p { color: var(--ink-soft); font-size: var(--t-small); }

/* ============================================================
   MARKA LOGO IZGARASI
   ============================================================ */
.brand-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
    gap: var(--sp-3);
}
.brand-cell {
    background: var(--white);
    border: 1px solid var(--line);
    border-radius: var(--r-md);
    min-height: 110px;
    display: grid;
    place-items: center;
    padding: 20px;
    box-shadow: var(--sh-1);
    transition: transform var(--dur-base) var(--ease-out), box-shadow var(--dur-base) var(--ease-out);
}
.brand-cell:hover { transform: translateY(-3px); box-shadow: var(--sh-2); }
.brand-cell span {
    font-family: 'Tac One', cursive;
    font-size: 1.6rem;
    color: var(--primary-blue);
    letter-spacing: 1px;
}

/* ============================================================
   BLOG / BİLGİ BANKASI
   ============================================================ */
.post-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--sp-3);
}
.post-card {
    display: flex;
    flex-direction: column;
    background: var(--white);
    border: 1px solid var(--line);
    border-radius: var(--r-md);
    overflow: hidden;
    box-shadow: var(--sh-1);
    transition: transform var(--dur-base) var(--ease-out), box-shadow var(--dur-base) var(--ease-out);
}
.post-card:hover { transform: translateY(-5px); box-shadow: var(--sh-3); }
.post-thumb { aspect-ratio: 16 / 9; display: grid; place-items: center; color: #fff; }
.post-thumb svg { width: 54px; height: 54px; opacity: 0.9; }
.post-body { padding: 22px 24px; display: flex; flex-direction: column; flex: 1; }
.post-meta { font-size: var(--t-meta); color: var(--ink-faint); margin-bottom: 8px; }
.post-body h3 { font-size: var(--t-h3); color: var(--ink); margin-bottom: 8px; line-height: 1.3; }
.post-body p { color: var(--ink-soft); font-size: var(--t-small); flex: 1; }
.post-body .btn-ghost { margin-top: 14px; align-self: flex-start; }

/* ============================================================
   İLETİŞİM — form (8 durum, label, aria) + bilgi
   ============================================================ */
.contact-grid {
    display: grid;
    grid-template-columns: 1.1fr 0.9fr;
    gap: var(--sp-5);
    align-items: start;
}
.contact-info { display: grid; gap: 18px; }
.info-item {
    display: grid;
    grid-template-columns: auto 1fr;
    gap: 16px;
    align-items: start;
    background: var(--white);
    border: 1px solid var(--line);
    border-radius: var(--r-md);
    padding: 20px 22px;
    box-shadow: var(--sh-1);
}
.info-item .info-icon {
    width: 44px; height: 44px;
    background: linear-gradient(135deg, var(--sky-blue), var(--cloud-blue));
    border-radius: var(--r-sm);
    display: grid; place-items: center;
}
.info-item .info-icon svg { width: 22px; height: 22px; color: #fff; }
.info-item .info-icon--wa { background: var(--whatsapp); }
.info-item h4 { font-size: var(--t-body); color: var(--ink); margin-bottom: 2px; }
.info-item a, .info-item p { color: var(--ink-soft); text-decoration: none; font-size: var(--t-small); }
.info-item a:hover { color: var(--sky-blue); }
/* tıklanabilir info kartları (telefon/whatsapp) */
a.info-item { text-decoration: none; transition: transform var(--dur-base) var(--ease-out), box-shadow var(--dur-base) var(--ease-out), border-color var(--dur-base) var(--ease-out); }
a.info-item:hover { transform: translateY(-3px); box-shadow: var(--sh-2); border-color: var(--accent-blue); }

.contact-form {
    background: var(--white);
    border: 1px solid var(--line);
    border-radius: var(--r-lg);
    padding: 30px;
    box-shadow: var(--sh-2);
}
.field { margin-bottom: 18px; }
.field label {
    display: block;
    font-size: var(--t-small);
    font-weight: 600;
    color: var(--ink);
    margin-bottom: 6px;
}
.field .req { color: var(--green); }
.field input,
.field textarea {
    width: 100%;
    font: inherit;
    font-size: var(--t-small);
    color: var(--ink);
    padding: 12px 14px;
    border: 1.5px solid var(--line);
    border-radius: var(--r-sm);
    background: var(--paper);
    transition: border-color var(--dur-base) var(--ease-out), box-shadow var(--dur-base) var(--ease-out);
}
.field input::placeholder, .field textarea::placeholder { color: var(--ink-faint); }
.field input:hover, .field textarea:hover { border-color: var(--accent-blue); }
.field input:focus, .field textarea:focus {
    outline: none;
    border-color: var(--sky-blue);
    box-shadow: 0 0 0 3px rgba(14,165,233,0.15);
}
.field .help { font-size: var(--t-meta); color: var(--ink-faint); margin-top: 5px; }
/* error durumu */
.field input:invalid:not(:placeholder-shown),
.field textarea:invalid:not(:placeholder-shown) {
    border-color: #DC2626;
}
.field .error-message { display: none; color: #DC2626; font-size: var(--t-meta); margin-top: 5px; }
.field input:invalid:not(:placeholder-shown) ~ .error-message,
.field textarea:invalid:not(:placeholder-shown) ~ .error-message { display: block; }
/* Honeypot — ekranda ve okuyucuda gizli (sadece botlar doldurur) */
.hp-field { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }
/* Basit CAPTCHA */
.captcha-row { display: flex; align-items: center; gap: 14px; }
.captcha-soru {
    flex-shrink: 0;
    font-weight: 800;
    font-size: var(--t-lead);
    color: var(--primary-blue);
    background: var(--gray-light);
    border: 1.5px solid var(--line);
    border-radius: var(--r-sm);
    padding: 10px 16px;
    letter-spacing: 1px;
    user-select: none;
}
.captcha-field input { max-width: 140px; }
.contact-form .btn-cta { width: 100%; justify-content: center; }
.form-note { font-size: var(--t-meta); color: var(--ink-faint); margin-top: 14px; text-align: center; }


/* ============================================================
   CTA ŞERİDİ (sayfa sonu çağrısı)
   ============================================================ */
.cta-band {
    position: relative;
    overflow: hidden;
    background:
        radial-gradient(90% 160% at 100% 0%, rgba(249,115,22,0.32), transparent 55%),  /* sıcak parıltı */
        radial-gradient(80% 150% at 0% 100%, rgba(56,189,248,0.18), transparent 55%),
        linear-gradient(120deg, var(--primary-blue), var(--secondary-blue));
    color: #fff;
    border-radius: var(--r-lg);
    padding: var(--sp-5);
    display: grid;
    grid-template-columns: 1fr auto;
    align-items: center;
    gap: var(--sp-4);
    box-shadow: var(--sh-3);
}
/* sıcak vurgu şeridi (sol kenar) */
.cta-band::before {
    content: "";
    position: absolute;
    left: 0; top: 0; bottom: 0;
    width: 6px;
    background: var(--warm-grad);
}
.cta-band h2 { font-size: var(--t-h2); font-weight: 800; letter-spacing: -0.4px; }
.cta-band p { opacity: 0.9; margin-top: 8px; max-width: 52ch; }
/* buton sıcak (güneş sarısı) — beyaz yerine */
.cta-band .btn-cta { background: var(--warm-grad); color: var(--primary-blue); box-shadow: 0 10px 26px rgba(245,158,11,0.4); }
.cta-band .btn-cta:hover { background: linear-gradient(135deg, #FCD34D, #F59E0B); transform: translateY(-2px); }

/* ============================================================
   YAPIM AŞAMASINDA (kullanılırsa)
   ============================================================ */
.construction {
    padding: var(--sp-6) 0;
    text-align: center;
    min-height: 56vh;
    display: flex;
    align-items: center;
}
.construction .container { width: 100%; }
.construction-icon { margin: 0 auto 28px; width: 110px; height: 110px; animation: fadeInUp 0.6s var(--ease-out) both; }
.construction-icon svg { width: 100%; height: 100%; }
.construction h1 { font-size: var(--t-h2); font-weight: 800; color: var(--ink); margin-bottom: 12px; }
.construction-page-name {
    display: inline-block;
    background: var(--primary-blue);
    color: #fff;
    padding: 6px 18px;
    border-radius: var(--r-pill);
    font-size: var(--t-meta);
    font-weight: 600;
    margin-bottom: 18px;
}
.construction-text { color: var(--ink-soft); font-size: var(--t-body); max-width: 480px; margin: 0 auto 30px; }

/* ============================================================
   404
   ============================================================ */
.error-page {
    min-height: 60vh;
    display: grid;
    place-items: center;
    text-align: center;
    padding: var(--sp-6) 0;
}
.error-code {
    font-family: 'Tac One', cursive;
    font-size: 6rem;
    line-height: 1;
    color: var(--primary-blue);
    opacity: 0.18;
}
.error-page h1 { font-size: var(--t-h2); font-weight: 800; color: var(--ink); margin: 8px 0 12px; }
.error-page p { color: var(--ink-soft); max-width: 46ch; margin: 0 auto 28px; }
.error-actions { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }

/* ============================================================
   FOOTER
   ============================================================ */
footer {
    position: relative;
    background:
        radial-gradient(70% 120% at 100% 0%, rgba(245,158,11,0.16), transparent 55%),  /* sıcak parıltı */
        var(--primary-blue);
    color: #fff;
    padding: var(--sp-5) 0 var(--sp-3);
    margin-top: var(--sp-4);
}
/* üst kenarda sıcak vurgu çizgisi */
footer::before {
    content: "";
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--amber), var(--sun), var(--sky-blue));
}
.footer-top {
    display: grid;
    grid-template-columns: 1.4fr 1fr 1fr 1fr;
    gap: var(--sp-4);
    padding-bottom: var(--sp-4);
    border-bottom: 1px solid rgba(255,255,255,0.12);
}
.footer-brand .logo { color: #fff; font-size: 2.6rem; }
.footer-brand p { opacity: 0.75; font-size: var(--t-small); margin-top: 12px; max-width: 38ch; }
.footer-social { display: flex; gap: 10px; margin-top: 18px; }
.footer-social a {
    width: 36px; height: 36px;
    border-radius: 50%;
    background: rgba(255,255,255,0.08);
    display: grid; place-items: center;
    color: #fff;
    transition: background var(--dur-base) var(--ease-out), transform var(--dur-fast) var(--ease-out);
}
.footer-social a:hover { background: var(--warm-grad); color: var(--primary-blue); transform: translateY(-2px); }
.footer-social svg { width: 16px; height: 16px; }

.footer-col h4 { font-size: var(--t-body); margin-bottom: 16px; color: var(--sun); }  /* sıcak başlık */
.footer-col ul { list-style: none; display: grid; gap: 10px; }
.footer-col a {
    color: #fff;
    text-decoration: none;
    opacity: 0.78;
    font-size: var(--t-small);
    transition: opacity var(--dur-base) var(--ease-out), padding-left var(--dur-base) var(--ease-out);
}
.footer-col a:hover { opacity: 1; padding-left: 4px; color: var(--sun); }

.copyright {
    padding-top: var(--sp-3);
    text-align: center;
    opacity: 0.65;
    font-size: var(--t-meta);
}

/* ============================================================
   ANİMASYONLAR
   ============================================================ */
@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(24px); }
    to   { opacity: 1; transform: translateY(0); }
}

/* hareket hassasiyeti — motion.md kritik kuralı */
@media (prefers-reduced-motion: reduce) {
    html { scroll-behavior: auto; }
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 992px) {
    :root { --sp-6: 3.25rem; --t-h1: 2rem; }
    .hero-grid { grid-template-columns: 1fr; gap: 36px; }
    .hero-illustration { order: -1; max-width: 420px; margin: 0 auto; }
    .hero-desc { max-width: 100%; }

    /* Tablet: menü alt satıra insin, logo+aksiyonlar üstte */
    .header-inner { flex-wrap: wrap; gap: 14px 24px; }
    .nav-menu { order: 3; flex-basis: 100%; justify-content: center;
                padding-left: 0; margin-left: 0; border-left: none; }  /* alt satırda ayraç olmasın */
    .nav-menu ul { gap: 1.2rem 1.6rem; flex-wrap: wrap; white-space: normal; }

    .services-grid { grid-template-columns: repeat(2, 1fr); }
    .service-card, .service-card.feature { grid-column: span 1; }
    .service-card.feature { grid-template-columns: 1fr; }
    .service-card.feature .service-icon { margin-bottom: 14px; }

    .split, .split.reverse { grid-template-columns: 1fr; gap: var(--sp-4); }
    .split.reverse .split-media { order: 0; }
    .contact-grid { grid-template-columns: 1fr; gap: var(--sp-4); }
    .stats { grid-template-columns: repeat(2, 1fr); }
    .stat:nth-child(3) { border-left: none; }
    .footer-top { grid-template-columns: 1fr 1fr; }
    .footer-brand { grid-column: 1 / -1; }
    .cta-band { grid-template-columns: 1fr; text-align: center; }
    .cta-band .btn-cta { justify-self: center; }
    .values-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 640px) {
    .container { padding: 0 18px; }
    .logo { font-size: 2.9rem; }

    /* Mobil: hamburger açılır menü */
    .nav-toggle { display: inline-flex; order: 2; }
    .header-inner { flex-wrap: wrap; }
    .header-actions { order: 1; margin-left: auto; }
    .logo { order: 0; }
    .nav-menu { order: 3; flex-basis: 100%; }
    .nav-menu ul {
        flex-direction: column;
        align-items: center;
        width: 100%;
        gap: 0.4rem;
        max-height: 0;
        overflow: hidden;
        transition: max-height var(--dur-base) var(--ease-out);
    }
    .nav-menu.open ul { max-height: 520px; padding: 8px 0; }
    .nav-menu a { display: block; padding: 8px 0; }

    .services-grid { grid-template-columns: 1fr; }
    .values-grid { grid-template-columns: 1fr; }
    .stats { grid-template-columns: 1fr; }
    .stat + .stat { border-left: none; border-top: 1px solid rgba(255,255,255,0.15); padding-top: 16px; margin-top: 16px; }
    .footer-top { grid-template-columns: 1fr; }
    .error-code { font-size: 4.5rem; }
}