:root {
    --navy-900: #0b1f3a;
    --navy-800: #0e2a4f;
    --navy-700: #14356a;
    --navy-600: #1b4487;
    --blue-500: #2f6fd6;
    --gold-500: #f0b429;
    --gold-600: #d99a1b;
    --text: #1e2a3a;
    --text-muted: #5b6b7e;
    --bg-soft: #f4f7fb;
    --white: #ffffff;
    --border: #e3e9f2;
    --shadow: 0 10px 30px rgba(11, 31, 58, 0.08);
    --radius: 16px;
    --font: 'Inter', system-ui, -apple-system, sans-serif;
}

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

html {
    scroll-behavior: smooth;
    scroll-padding-top: 84px;
}

body {
    font-family: var(--font);
    color: var(--text);
    line-height: 1.6;
    background: var(--white);
    -webkit-font-smoothing: antialiased;
}

img {
    max-width: 100%;
    display: block;
}

a {
    color: inherit;
    text-decoration: none;
}

ul {
    list-style: none;
}

button {
    font-family: inherit;
    cursor: pointer;
}

.container {
    width: min(1180px, 92%);
    margin-inline: auto;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 14px 28px;
    border-radius: 12px;
    font-weight: 600;
    font-size: 15px;
    border: 2px solid transparent;
    transition: background 0.25s ease, color 0.25s ease, transform 0.2s ease, box-shadow 0.25s ease;
}

.btn--primary {
    background: var(--gold-500);
    color: var(--navy-900);
}

.btn--primary:hover {
    background: var(--gold-600);
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(240, 180, 41, 0.35);
}

.btn--ghost {
    border-color: rgba(255, 255, 255, 0.5);
    color: var(--white);
    background: transparent;
}

.btn--ghost:hover {
    background: rgba(255, 255, 255, 0.12);
}

.btn--block {
    width: 100%;
}

.btn--danger {
    background: #d64545;
    color: var(--white);
}

.btn--danger:hover {
    background: #bd3535;
}

.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    background: rgba(11, 31, 58, 0.92);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    transition: background 0.3s ease;
}

.header__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 76px;
}

.logo {
    display: inline-flex;
    align-items: center;
    gap: 10px;
}

.logo__img {
    display: block;
    height: 44px;
    width: auto;
    max-width: 100%;
}

@media (max-width: 1024px) and (min-width: 641px) {
    .logo__img {
        height: auto;
        width: 25vw;
    }
}

@media (max-width: 640px) {
    .logo__img {
        height: auto;
        width: 40vw;
    }
}

.logo__icon {
    display: grid;
    place-items: center;
    width: 40px;
    height: 40px;
    border-radius: 12px;
    background: linear-gradient(135deg, var(--gold-500), var(--gold-600));
    color: var(--navy-900);
}

.logo__icon svg {
    width: 22px;
    height: 22px;
}

.logo__text {
    display: flex;
    flex-direction: column;
    line-height: 1.1;
    color: var(--white);
}

.logo__text strong {
    font-size: 19px;
    font-weight: 800;
    letter-spacing: 0.3px;
}

.logo__text em {
    font-style: normal;
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 3px;
    text-transform: uppercase;
    color: var(--gold-500);
}

.logo--footer .logo__text {
    color: var(--white);
}

.nav {
    display: flex;
    align-items: center;
    gap: 28px;
}

.nav > a:not(.nav__cta) {
    color: rgba(255, 255, 255, 0.85);
    font-size: 14.5px;
    font-weight: 500;
    transition: color 0.2s ease;
}

.nav > a:not(.nav__cta):hover {
    color: var(--gold-500);
}

.nav__cta {
    display: none;
    padding: 10px 20px;
    border-radius: 10px;
    background: var(--gold-500);
    color: var(--navy-900) !important;
    font-weight: 700;
    font-size: 14px;
    transition: background 0.2s ease;
}

.nav__cta:hover {
    background: var(--gold-600);
}

.header__btns {
    display: flex;
    align-items: center;
    gap: 10px;
}

.header__btn {
    padding: 11px 22px;
    font-size: 14px;
}

.header__btn:hover {
    box-shadow: none;
}

.nav-toggle {
    display: none;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 42px;
    height: 42px;
    padding: 10px;
    border: 1px solid rgba(255, 255, 255, 0.25);
    border-radius: 10px;
    background: transparent;
}

.nav-toggle span {
    display: block;
    height: 2px;
    width: 100%;
    background: var(--white);
    border-radius: 2px;
    transition: transform 0.25s ease, opacity 0.25s ease;
}

.nav-toggle.is-open span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}

.nav-toggle.is-open span:nth-child(2) {
    opacity: 0;
}

.nav-toggle.is-open span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}

.hero {
    position: relative;
    background:
        radial-gradient(1000px 500px at 85% 10%, rgba(47, 111, 214, 0.35), transparent 60%),
        radial-gradient(700px 400px at 10% 90%, rgba(240, 180, 41, 0.15), transparent 60%),
        linear-gradient(135deg, var(--navy-900), var(--navy-700));
    color: var(--white);
    padding: 160px 0 100px;
    overflow: hidden;
}

.hero__inner {
    display: grid;
    grid-template-columns: 1.1fr 0.9fr;
    align-items: center;
    gap: 48px;
}

.hero__badge {
    display: inline-block;
    padding: 8px 16px;
    border-radius: 100px;
    background: rgba(240, 180, 41, 0.15);
    border: 1px solid rgba(240, 180, 41, 0.4);
    color: var(--gold-500);
    font-size: 13px;
    font-weight: 600;
    letter-spacing: 0.5px;
    margin-bottom: 22px;
}

.hero h1 {
    font-size: clamp(34px, 5vw, 56px);
    font-weight: 800;
    line-height: 1.12;
    letter-spacing: -1px;
    margin-bottom: 20px;
}

.hero h1 span {
    color: var(--gold-500);
}

.hero__desc {
    font-size: 17px;
    color: rgba(255, 255, 255, 0.82);
    max-width: 520px;
    margin-bottom: 32px;
}

.hero__actions {
    display: flex;
    flex-wrap: wrap;
    gap: 14px;
    margin-bottom: 36px;
}

.hero__trust {
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
    font-size: 14px;
    color: rgba(255, 255, 255, 0.85);
}

.hero__trust li {
    display: flex;
    align-items: center;
    gap: 8px;
}

.hero__trust-icon {
    color: var(--gold-500);
    font-weight: 700;
}

.hero__visual {
    position: relative;
    display: grid;
    place-items: center;
    min-height: 360px;
}

.hero__shield {
    display: grid;
    place-items: center;
    width: 260px;
    height: 260px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--navy-600), var(--blue-500));
    box-shadow: 0 30px 60px rgba(0, 0, 0, 0.35), inset 0 0 0 1px rgba(255, 255, 255, 0.15);
}

.hero__shield svg {
    width: 120px;
    height: 120px;
    color: var(--gold-500);
}

.hero__card {
    position: absolute;
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.18);
    backdrop-filter: blur(8px);
    border-radius: 16px;
    padding: 14px 22px;
    text-align: center;
}

.hero__card strong {
    display: block;
    font-size: 26px;
    font-weight: 800;
    color: var(--gold-500);
}

.hero__card span {
    font-size: 12px;
    color: rgba(255, 255, 255, 0.85);
    letter-spacing: 1px;
    text-transform: uppercase;
}

.hero__card--top {
    top: 24px;
    right: 8%;
    animation: float 5s ease-in-out infinite;
}

.hero__card--bottom {
    bottom: 24px;
    left: 8%;
    animation: float 5s ease-in-out 2.5s infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-12px); }
}

.section-head {
    text-align: center;
    max-width: 640px;
    margin: 0 auto 52px;
}

.section-head--light {
    color: var(--white);
}

.section-head__kicker {
    color: var(--gold-600);
    font-weight: 700;
    font-size: 13px;
    letter-spacing: 2.5px;
    text-transform: uppercase;
    margin-bottom: 10px;
}

.section-head--light .section-head__kicker {
    color: var(--gold-500);
}

.section-head h2 {
    font-size: clamp(26px, 3.5vw, 38px);
    font-weight: 800;
    letter-spacing: -0.5px;
    line-height: 1.2;
    color: var(--navy-900);
}

.section-head--light h2 {
    color: var(--white);
}

.section-head__desc {
    color: var(--text-muted);
    margin-top: 14px;
    font-size: 16px;
}

.section-head--light .section-head__desc {
    color: rgba(255, 255, 255, 0.75);
}

.products {
    padding: 96px 0;
    background: var(--bg-soft);
}

.products__grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.product-card {
    display: block;
    background: var(--white);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 32px 28px;
    text-decoration: none;
    color: inherit;
    transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
}

.product-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow);
    border-color: rgba(47, 111, 214, 0.35);
}

.product-card__icon {
    display: grid;
    place-items: center;
    width: 56px;
    height: 56px;
    border-radius: 14px;
    background: linear-gradient(135deg, rgba(47, 111, 214, 0.12), rgba(47, 111, 214, 0.06));
    color: var(--blue-500);
    margin-bottom: 20px;
}

.product-card__icon svg {
    width: 28px;
    height: 28px;
}

.product-card h3 {
    font-size: 18px;
    font-weight: 700;
    color: var(--navy-900);
    margin-bottom: 8px;
}

.product-card p {
    font-size: 14.5px;
    color: var(--text-muted);
    margin-bottom: 18px;
}

.product-card__link {
    font-weight: 700;
    font-size: 14px;
    color: var(--blue-500);
    display: inline-flex;
    align-items: center;
    gap: 6px;
    transition: gap 0.2s ease, color 0.2s ease;
}

.product-card__link:hover {
    gap: 10px;
    color: var(--navy-700);
}

.features {
    padding: 96px 0;
    background: linear-gradient(135deg, var(--navy-900), var(--navy-700));
}

.features__grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.feature {
    text-align: center;
    padding: 28px 20px;
    border-radius: var(--radius);
    border: 1px solid rgba(255, 255, 255, 0.12);
    background: rgba(255, 255, 255, 0.05);
    transition: background 0.3s ease, transform 0.3s ease;
}

.feature:hover {
    background: rgba(255, 255, 255, 0.09);
    transform: translateY(-4px);
}

.feature__icon {
    display: grid;
    place-items: center;
    width: 56px;
    height: 56px;
    margin: 0 auto 18px;
    border-radius: 14px;
    background: rgba(240, 180, 41, 0.15);
    color: var(--gold-500);
}

.feature__icon svg {
    width: 26px;
    height: 26px;
}

.feature h3 {
    font-size: 17px;
    font-weight: 700;
    color: var(--white);
    margin-bottom: 8px;
}

.feature p {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.72);
}

.steps {
    padding: 96px 0;
}

.steps__row {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    counter-reset: step;
}

.step {
    position: relative;
    padding: 36px 28px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background: var(--white);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.step:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow);
}

.step__num {
    display: inline-block;
    font-size: 40px;
    font-weight: 800;
    color: rgba(47, 111, 214, 0.15);
    line-height: 1;
    margin-bottom: 16px;
}

.step h3 {
    font-size: 18px;
    font-weight: 700;
    color: var(--navy-900);
    margin-bottom: 8px;
}

.step p {
    font-size: 14.5px;
    color: var(--text-muted);
}

.stats {
    background: linear-gradient(135deg, var(--navy-800), var(--navy-600));
    padding: 72px 0;
    color: var(--white);
}

.stats__inner {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
    text-align: center;
}

.stat strong {
    display: block;
    font-size: clamp(34px, 4vw, 48px);
    font-weight: 800;
    color: var(--gold-500);
    line-height: 1.1;
}

.stat span {
    display: block;
    font-size: 14px;
    color: rgba(255, 255, 255, 0.8);
    margin-top: 6px;
}

.contact {
    padding: 96px 0;
    background: var(--bg-soft);
}

.contact__inner {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 56px;
    align-items: start;
}

.contact__info h2 {
    font-size: clamp(26px, 3.5vw, 36px);
    font-weight: 800;
    color: var(--navy-900);
    letter-spacing: -0.5px;
    line-height: 1.2;
    margin-bottom: 16px;
}

.contact__desc {
    color: var(--text-muted);
    margin-bottom: 32px;
    max-width: 460px;
}

.contact__list {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.contact__list li {
    display: flex;
    align-items: flex-start;
    gap: 16px;
}

.contact__icon {
    display: grid;
    place-items: center;
    flex-shrink: 0;
    width: 46px;
    height: 46px;
    border-radius: 12px;
    background: var(--white);
    border: 1px solid var(--border);
    color: var(--blue-500);
    box-shadow: 0 4px 12px rgba(11, 31, 58, 0.05);
}

.contact__icon svg {
    width: 22px;
    height: 22px;
}

.contact__list strong {
    display: block;
    font-size: 13px;
    color: var(--text-muted);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.contact__list a {
    font-size: 16px;
    font-weight: 600;
    color: var(--navy-900);
}

.contact__list a:hover {
    color: var(--blue-500);
}

.contact__list p {
    font-size: 16px;
    color: var(--navy-900);
}

.contact__form {
    background: var(--white);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 36px;
    box-shadow: var(--shadow);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.form-group {
    margin-bottom: 18px;
}

.form-group label {
    display: block;
    font-size: 13.5px;
    font-weight: 600;
    color: var(--navy-900);
    margin-bottom: 7px;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 13px 15px;
    border: 1px solid var(--border);
    border-radius: 10px;
    font-family: inherit;
    font-size: 14.5px;
    color: var(--text);
    background: var(--white);
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--blue-500);
    box-shadow: 0 0 0 3px rgba(47, 111, 214, 0.12);
}

.form-group textarea {
    resize: vertical;
}

.form-group input.is-invalid {
    border-color: #d64545;
}

.form-error {
    margin-top: 14px;
    color: #d64545;
    font-size: 14px;
    font-weight: 500;
}

.form-success {
    margin-top: 16px;
    padding: 12px 16px;
    border-radius: 10px;
    background: rgba(39, 174, 96, 0.12);
    color: #1f8a4c;
    font-size: 14px;
    font-weight: 600;
}

.footer {
    background: var(--navy-900);
    color: rgba(255, 255, 255, 0.75);
    padding: 64px 0 24px;
}

.footer__inner {
    display: grid;
    grid-template-columns: 1.4fr 1fr 1fr 1fr;
    gap: 40px;
    margin-bottom: 48px;
}

.footer__brand p {
    font-size: 14px;
    margin-top: 14px;
    max-width: 300px;
}

.footer__col {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.footer__col h4 {
    color: var(--white);
    font-size: 15px;
    font-weight: 700;
    margin-bottom: 6px;
}

.footer__col a {
    font-size: 14px;
    transition: color 0.2s ease;
}

.footer__col a:hover {
    color: var(--gold-500);
}

.footer__bayi {
    color: var(--gold-500) !important;
    font-weight: 600;
}

.footer__bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.12);
    padding-top: 24px;
    text-align: center;
    font-size: 13px;
    color: rgba(255, 255, 255, 0.55);
}

.modal {
    position: fixed;
    inset: 0;
    z-index: 200;
    display: grid;
    place-items: center;
    padding: 20px;
    visibility: hidden;
    opacity: 0;
    transition: opacity 0.3s ease, visibility 0.3s ease;
}

.modal.is-open {
    visibility: visible;
    opacity: 1;
}

.modal__backdrop {
    position: absolute;
    inset: 0;
    background: rgba(11, 31, 58, 0.6);
    backdrop-filter: blur(4px);
}

.modal__dialog {
    position: relative;
    width: min(420px, 100%);
    background: var(--white);
    border-radius: var(--radius);
    padding: 40px 36px 32px;
    box-shadow: 0 30px 60px rgba(0, 0, 0, 0.3);
    transform: translateY(24px);
    transition: transform 0.3s ease;
}

.modal.is-open .modal__dialog {
    transform: translateY(0);
}

.modal__close {
    position: absolute;
    top: 16px;
    right: 16px;
    width: 36px;
    height: 36px;
    border: none;
    border-radius: 10px;
    background: var(--bg-soft);
    color: var(--text-muted);
    font-size: 20px;
    line-height: 1;
    transition: background 0.2s ease, color 0.2s ease;
}

.modal__close:hover {
    background: #e8edf5;
    color: var(--navy-900);
}

.modal__icon {
    display: grid;
    place-items: center;
    width: 60px;
    height: 60px;
    margin: 0 auto 18px;
    border-radius: 16px;
    background: linear-gradient(135deg, var(--navy-700), var(--blue-500));
    color: var(--gold-500);
}

.modal__icon svg {
    width: 30px;
    height: 30px;
}

.modal__dialog h2 {
    text-align: center;
    font-size: 24px;
    font-weight: 800;
    color: var(--navy-900);
}

.modal__sub {
    text-align: center;
    color: var(--text-muted);
    font-size: 14.5px;
    margin: 6px 0 26px;
}

.reveal {
    opacity: 0;
    transform: translateY(28px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal.is-visible {
    opacity: 1;
    transform: translateY(0);
}

@media (max-width: 1024px) {
    .features__grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .stats__inner {
        grid-template-columns: repeat(2, 1fr);
        gap: 40px;
    }

    .footer__inner {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 900px) {
    .hero__inner {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .hero__desc,
    .hero__trust {
        margin-inline: auto;
    }

    .hero__actions {
        justify-content: center;
    }

    .hero__trust {
        justify-content: center;
    }

    .contact__inner {
        grid-template-columns: 1fr;
    }

    .steps__row {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .header__btn {
        display: none;
    }

    .nav-toggle {
        display: flex;
    }

    .nav {
        position: absolute;
        top: 76px;
        left: 0;
        right: 0;
        flex-direction: column;
        align-items: stretch;
        gap: 0;
        background: var(--navy-900);
        padding: 16px 5%;
        border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        transform: translateY(-16px);
        opacity: 0;
        visibility: hidden;
        transition: transform 0.3s ease, opacity 0.3s ease, visibility 0.3s ease;
    }

    .nav.is-open {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }

    .nav > a {
        padding: 14px 0;
        border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        font-size: 16px;
    }

    .nav > a:last-child {
        border-bottom: none;
    }

    .nav__cta {
        display: block;
        text-align: center;
        margin-top: 10px;
    }

    .nav > a.nav__btn {
        padding: 11px 22px;
        border-bottom: none;
        margin-top: 8px;
        font-size: 15px;
        width: 100%;
    }

    .hero {
        padding: 140px 0 70px;
    }

    .hero__visual {
        min-height: 280px;
    }

    .hero__shield {
        width: 200px;
        height: 200px;
    }

    .hero__shield svg {
        width: 90px;
        height: 90px;
    }
}

@media (max-width: 560px) {
    .products__grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 16px;
    }

    .products__grid .product-card {
        padding: 24px 20px;
    }

    .features__grid,
    .stats__inner {
        grid-template-columns: 1fr;
    }

    .form-row {
        grid-template-columns: 1fr;
    }

    .footer__inner {
        grid-template-columns: 1fr;
        gap: 32px;
    }

    .contact__form {
        padding: 26px 20px;
    }
}

/* ===== Custom Select (Cihaz Modeli) — bayı paneli ile aynı görünüm ===== */
.custom-select {
    position: relative;
    width: 100%;
}

.custom-select__trigger {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
    width: 100%;
    padding: 12px 14px;
    border: 1px solid var(--border);
    border-radius: 10px;
    font-family: inherit;
    font-size: 15px;
    color: var(--text);
    background: var(--white);
    cursor: pointer;
    text-align: left;
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.custom-select__trigger:focus {
    outline: none;
    border-color: var(--blue-500);
    box-shadow: 0 0 0 3px rgba(47, 111, 214, 0.12);
}

.custom-select__trigger:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.custom-select__trigger.is-invalid {
    border-color: #bd3535;
    box-shadow: 0 0 0 3px rgba(189, 53, 53, 0.12);
}

.custom-select__value {
    flex: 1;
    min-width: 0;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.custom-select__arrow {
    width: 0;
    height: 0;
    border-left: 5px solid transparent;
    border-right: 5px solid transparent;
    border-top: 6px solid var(--text-muted);
    flex-shrink: 0;
}

.custom-select__menu {
    position: absolute;
    top: calc(100% + 6px);
    left: 0;
    width: 100%;
    max-height: 280px;
    overflow-y: auto;
    background: var(--white);
    border: 1px solid var(--border);
    border-radius: 10px;
    box-shadow: var(--shadow);
    z-index: 50;
    display: none;
    padding: 4px;
}

.custom-select__menu.is-open {
    display: block;
}

.custom-select__option {
    display: block;
    width: 100%;
    padding: 9px 12px;
    border: none;
    border-radius: 6px;
    background: transparent;
    font-family: inherit;
    font-size: 14px;
    color: var(--text);
    text-align: left;
    cursor: pointer;
    white-space: normal;
    word-break: break-word;
    line-height: 1.4;
}

.custom-select__option:hover {
    background: var(--bg-soft);
}

.custom-select__option.is-selected {
    background: rgba(240, 180, 41, 0.15);
    font-weight: 600;
}