@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800;900&display=swap');
:root {
    --biss-navy: #071E57;
    --biss-navy-2: #0B2B6F;
    --biss-red: #D71920;
    --biss-red-dark: #B9151B;
    --biss-soft: #F5F7FB;
    --biss-text: #172033;
    --biss-muted: #667085;
    --biss-border: #E5E7EB;
    --white: #FFFFFF;
    --shadow: 0 18px 45px rgba(7, 30, 87, 0.12);
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: 'Inter', Arial, Helvetica, sans-serif;
    background: var(--biss-soft);
    color: var(--biss-text);
    font-size: 16px;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    text-rendering: optimizeLegibility;
}
a {
    color: inherit;
    text-decoration: none;
}

.container {
    width: min(1180px, calc(100% - 32px));
    margin: 0 auto;
}

.top-header {
    background: rgba(255, 255, 255, .96);
    border-bottom: 1px solid rgba(7, 30, 87, .08);
    position: sticky;
    top: 0;
    z-index: 1000;
    backdrop-filter: blur(12px);
}

.header-inner {
    height: 88px;
    display: flex;
    align-items: center;
    gap: 24px;
}

.brand {
    display: flex;
    align-items: center;
    flex: 0 0 auto;
}

.brand img {
    height: 58px;
    width: auto;
    display: block;
}

.main-nav {
    display: flex;
    align-items: center;
    gap: 6px;
    margin-left: auto;
}

.nav-item {
    position: relative;
}

.nav-item > a {
    display: flex;
    align-items: center;
    gap: 7px;
    padding: 12px 13px;
    border-radius: 12px;
    color: var(--biss-navy);
    font-weight: 700;
    font-size: 14px;
    white-space: nowrap;
    transition: .2s ease;
}

.nav-item > a:hover {
    background: rgba(7, 30, 87, .06);
    color: var(--biss-red);
}

.dropdown-menu {
    position: absolute;
    top: 46px;
    left: 0;
    min-width: 230px;
    background: var(--white);
    border: 1px solid rgba(7, 30, 87, .10);
    border-radius: 16px;
    padding: 8px;
    box-shadow: var(--shadow);
    opacity: 0;
    visibility: hidden;
    transform: translateY(8px);
    transition: .2s ease;
}

.has-dropdown:hover .dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.dropdown-menu a {
    display: block;
    padding: 12px 13px;
    border-radius: 12px;
    color: var(--biss-navy);
    font-weight: 700;
    font-size: 14px;
}

.dropdown-menu a:hover {
    background: var(--biss-soft);
    color: var(--biss-red);
}

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

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 9px;
    border-radius: 14px;
    padding: 12px 17px;
    font-weight: 800;
    font-size: 14px;
    border: 1px solid transparent;
    cursor: pointer;
    transition: .2s ease;
}

.btn-primary {
    background: var(--biss-red);
    color: var(--white);
    box-shadow: 0 12px 24px rgba(215, 25, 32, .22);
}

.btn-primary:hover {
    background: var(--biss-red-dark);
    transform: translateY(-1px);
}

.btn-outline {
    background: var(--white);
    color: var(--biss-navy);
    border-color: rgba(7, 30, 87, .15);
}

.btn-outline:hover {
    border-color: var(--biss-red);
    color: var(--biss-red);
}

.btn-white {
    background: var(--white);
    color: var(--biss-navy);
}

.btn-large {
    padding: 15px 22px;
    font-size: 15px;
}

.disabled {
    opacity: .55;
    cursor: not-allowed;
}

.mobile-toggle {
    display: none;
    margin-left: auto;
    background: var(--biss-navy);
    color: #fff;
    border: 0;
    border-radius: 12px;
    width: 44px;
    height: 44px;
    font-size: 18px;
}

.hero {
    background:
        radial-gradient(circle at 10% 0%, rgba(215, 25, 32, .16), transparent 34%),
        linear-gradient(135deg, var(--biss-navy), var(--biss-navy-2));
    color: var(--white);
    padding: 72px 0;
}

.hero-grid {
    display: grid;
    grid-template-columns: 1.05fr .95fr;
    gap: 38px;
    align-items: center;
}

.eyebrow {
    display: inline-flex;
    color: var(--biss-red);
    background: rgba(215, 25, 32, .09);
    border: 1px solid rgba(215, 25, 32, .14);
    padding: 8px 12px;
    border-radius: 999px;
    font-size: 13px;
    font-weight: 900;
    letter-spacing: .3px;
}

.hero .eyebrow {
    color: #fff;
    background: rgba(255, 255, 255, .12);
    border-color: rgba(255, 255, 255, .18);
}

.hero h1,
.page-hero h1 {
    font-size: clamp(34px, 5vw, 58px);
    line-height: 1.04;
    margin: 18px 0;
    letter-spacing: -1.5px;
}

.hero p,
.page-hero p {
    font-size: 18px;
    line-height: 1.7;
    opacity: .92;
    max-width: 680px;
}

.hero-actions {
    display: flex;
    gap: 14px;
    flex-wrap: wrap;
    margin-top: 28px;
}

.hero-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
    margin-top: 32px;
}

.hero-stats div {
    border: 1px solid rgba(255, 255, 255, .16);
    background: rgba(255, 255, 255, .08);
    border-radius: 18px;
    padding: 16px;
}

.hero-stats strong {
    display: block;
    font-size: 20px;
}

.hero-stats span {
    display: block;
    font-size: 13px;
    opacity: .82;
    margin-top: 4px;
}

.hero-card,
.content-card,
.side-card,
.info-panel {
    background: var(--white);
    color: var(--biss-text);
    border-radius: 24px;
    box-shadow: var(--shadow);
    border: 1px solid rgba(7, 30, 87, .08);
}

.hero-card {
    padding: 24px;
}

.hero-card-header {
    display: flex;
    gap: 14px;
    align-items: center;
    margin-bottom: 18px;
}

.hero-card-header i {
    width: 54px;
    height: 54px;
    border-radius: 18px;
    background: rgba(215, 25, 32, .10);
    color: var(--biss-red);
    display: grid;
    place-items: center;
    font-size: 24px;
}

.hero-card-header h3 {
    margin: 0 0 5px;
    color: var(--biss-navy);
}

.hero-card-header p {
    margin: 0;
    color: var(--biss-muted);
    font-size: 14px;
}

.section {
    padding: 72px 0;
}

.section-title {
    text-align: center;
    max-width: 760px;
    margin: 0 auto 34px;
}

.section-title h2,
.why-grid h2,
.content-card h2 {
    color: var(--biss-navy);
    font-size: clamp(28px, 4vw, 42px);
    line-height: 1.15;
    margin: 14px 0;
    letter-spacing: -1px;
}

.section-title p,
.why-grid p,
.content-card p {
    color: var(--biss-muted);
    line-height: 1.8;
    font-size: 16px;
}

.service-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 18px;
}

.service-card {
    background: var(--white);
    border: 1px solid rgba(7, 30, 87, .08);
    border-radius: 22px;
    padding: 24px;
    min-height: 260px;
    box-shadow: 0 12px 28px rgba(7, 30, 87, .07);
    transition: .2s ease;
}

.service-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow);
    border-color: rgba(215, 25, 32, .20);
}

.service-card .icon {
    width: 56px;
    height: 56px;
    display: grid;
    place-items: center;
    border-radius: 18px;
    background: rgba(7, 30, 87, .08);
    color: var(--biss-navy);
    font-size: 23px;
    margin-bottom: 18px;
}

.service-card:hover .icon {
    background: rgba(215, 25, 32, .10);
    color: var(--biss-red);
}

.service-card h3 {
    margin: 0 0 10px;
    color: var(--biss-navy);
}

.service-card p {
    color: var(--biss-muted);
    line-height: 1.6;
    font-size: 14px;
}

.service-card span {
    display: inline-flex;
    align-items: center;
    gap: 7px;
    color: var(--biss-red);
    font-weight: 900;
    margin-top: 10px;
    font-size: 14px;
}

.why-section {
    background: #fff;
    padding: 72px 0;
}

.why-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 34px;
    align-items: center;
}

.why-list {
    display: grid;
    gap: 14px;
}

.why-list div {
    display: flex;
    gap: 14px;
    align-items: center;
    background: var(--biss-soft);
    border: 1px solid rgba(7, 30, 87, .08);
    border-radius: 18px;
    padding: 18px;
    font-weight: 800;
    color: var(--biss-navy);
}

.why-list i {
    color: var(--biss-red);
}

.page-hero {
    background:
        radial-gradient(circle at right top, rgba(215, 25, 32, .14), transparent 30%),
        linear-gradient(135deg, var(--biss-navy), var(--biss-navy-2));
    color: var(--white);
    padding: 70px 0;
}

.page-hero .eyebrow {
    color: #fff;
    background: rgba(255,255,255,.12);
    border-color: rgba(255,255,255,.18);
}

.content-card {
    padding: 34px;
}

.value-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 18px;
    margin-top: 28px;
}

.value-grid div {
    border: 1px solid var(--biss-border);
    border-radius: 18px;
    padding: 20px;
}

.value-grid i,
.detail-icon {
    color: var(--biss-red);
    font-size: 28px;
}

.value-grid h3 {
    color: var(--biss-navy);
}

.detail-grid {
    display: grid;
    grid-template-columns: 1fr 420px;
    gap: 24px;
    align-items: start;
}

.side-card {
    padding: 24px;
    position: sticky;
    top: 110px;
}

.side-card h3 {
    color: var(--biss-navy);
    margin-top: 0;
}

.cta-strip {
    margin-top: 28px;
    background: var(--biss-soft);
    border: 1px solid rgba(7, 30, 87, .08);
    border-radius: 20px;
    padding: 20px;
    display: flex;
    justify-content: space-between;
    gap: 18px;
    align-items: center;
}

.cta-strip h3 {
    margin: 0 0 6px;
    color: var(--biss-navy);
}

.cta-strip p {
    margin: 0;
}

.quote-layout,
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 390px;
    gap: 24px;
    align-items: start;
}

.info-panel {
    padding: 28px;
}

.info-panel h3 {
    color: var(--biss-navy);
    margin-top: 0;
}

.info-panel li {
    margin-bottom: 12px;
    color: var(--biss-muted);
}

.contact-list {
    display: grid;
    gap: 14px;
    margin: 24px 0;
}

.contact-list div {
    display: flex;
    gap: 13px;
    align-items: center;
    color: var(--biss-navy);
    font-weight: 800;
}

.contact-list i {
    color: var(--biss-red);
}

.muted {
    color: var(--biss-muted);
}

.lead-form {
    display: grid;
    gap: 15px;
}

.form-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 14px;
}

.form-group {
    display: grid;
    gap: 7px;
}

.form-group label {
    color: var(--biss-navy);
    font-size: 13px;
    font-weight: 900;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    border: 1px solid var(--biss-border);
    border-radius: 14px;
    padding: 13px 14px;
    outline: none;
    font-size: 14px;
    background: #fff;
    color: var(--biss-text);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    border-color: var(--biss-red);
    box-shadow: 0 0 0 4px rgba(215, 25, 32, .08);
}

.form-group small,
.kvkk-error {
    color: var(--biss-red);
    font-weight: 700;
}

.kvkk {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    font-size: 13px;
    color: var(--biss-muted);
    line-height: 1.5;
}

.alert {
    padding: 13px 14px;
    border-radius: 14px;
    font-weight: 800;
    font-size: 14px;
}

.alert.success {
    background: #ecfdf3;
    color: #05603a;
    border: 1px solid #abefc6;
}

.alert.error {
    background: #fff1f3;
    color: #912018;
    border: 1px solid #fecdca;
}

.site-footer {
    background: var(--biss-navy);
    color: #fff;
    padding-top: 54px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.4fr .8fr 1fr;
    gap: 34px;
}

.footer-logo {
    height: 60px;
    background: #fff;
    border-radius: 12px;
    padding: 8px;
    margin-bottom: 16px;
}

.site-footer p {
    color: rgba(255, 255, 255, .78);
    line-height: 1.7;
}

.site-footer h4 {
    margin: 0 0 18px;
}

.site-footer a {
    display: block;
    color: rgba(255, 255, 255, .78);
    margin-bottom: 10px;
}

.site-footer a:hover {
    color: #fff;
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, .12);
    margin-top: 34px;
    padding: 18px 0;
    color: rgba(255, 255, 255, .70);
    font-size: 14px;
}

@media (max-width: 1100px) {
    .service-grid {
        grid-template-columns: repeat(3, 1fr);
    }

    .header-actions {
        display: none;
    }
}

@media (max-width: 900px) {
    .header-inner {
        height: 76px;
    }

    .brand img {
        height: 48px;
        max-width: 230px;
    }

    .mobile-toggle {
        display: inline-grid;
        place-items: center;
    }

    .main-nav {
        display: none;
        position: absolute;
        left: 16px;
        right: 16px;
        top: 82px;
        background: #fff;
        border: 1px solid rgba(7, 30, 87, .10);
        box-shadow: var(--shadow);
        border-radius: 18px;
        padding: 10px;
        flex-direction: column;
        align-items: stretch;
    }

    .main-nav.active {
        display: flex;
    }

    .nav-item > a {
        justify-content: space-between;
    }

    .dropdown-menu {
        position: static;
        opacity: 1;
        visibility: visible;
        transform: none;
        box-shadow: none;
        border: 0;
        padding: 0 0 0 10px;
        display: none;
    }

    .has-dropdown.open .dropdown-menu {
        display: block;
    }

    .hero-grid,
    .why-grid,
    .detail-grid,
    .quote-layout,
    .contact-grid {
        grid-template-columns: 1fr;
    }

    .hero {
        padding: 50px 0;
    }

    .hero-stats {
        grid-template-columns: 1fr;
    }

    .service-grid,
    .value-grid,
    .footer-grid,
    .form-grid {
        grid-template-columns: 1fr;
    }

    .side-card {
        position: static;
    }

    .cta-strip {
        flex-direction: column;
        align-items: flex-start;
    }
}