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

html {
    scroll-behavior: smooth;
}

body {
    font-family: Arial, Helvetica, sans-serif;
    background: #f5f6f8;
    color: #1f2937;
    line-height: 1.6;
}

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

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

button {
    font-family: inherit;
}

/* GENEL */

.section-container {
    width: min(94%, 1500px);
    margin: 0 auto;
}

.section-heading {
    text-align: center;
    max-width: 850px;
    margin: 0 auto 40px;
}

.section-heading span {
    display: inline-block;
    color: #6b7f96;
    font-size: 14px;
    font-weight: 700;
    letter-spacing: 2px;
    margin-bottom: 10px;
}

.section-heading h2 {
    font-size: clamp(30px, 4vw, 48px);
    line-height: 1.15;
    color: #24364b;
    margin-bottom: 14px;
}

.section-heading p {
    color: #6b7280;
    font-size: 17px;
}

/* HEADER */

.site-header {
    position: sticky;
    top: 0;
    z-index: 999;
    background: rgba(255, 255, 255, 0.96);
    border-bottom: 1px solid #dfe4ea;
    backdrop-filter: blur(10px);
}

.header-container {
    width: min(94%, 1500px);
    margin: 0 auto;
    min-height: 92px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 30px;
}

.logo-area {
    display: flex;
    align-items: center;
    flex-shrink: 0;
}

.site-logo {
    width: 150px;
    max-height: 72px;
    object-fit: contain;
}

.main-nav {
    display: flex;
    align-items: center;
    gap: 8px;
}

.main-nav a {
    position: relative;
    color: #38495d;
    font-size: 15px;
    font-weight: 700;
    padding: 34px 12px;
    transition: 0.25s ease;
}

.main-nav a::after {
    content: "";
    position: absolute;
    left: 50%;
    bottom: 20px;
    width: 0;
    height: 2px;
    background: #6f8da8;
    transition: 0.25s ease;
    transform: translateX(-50%);
}

.main-nav a:hover,
.main-nav a.active {
    color: #58758f;
}

.main-nav a:hover::after,
.main-nav a.active::after {
    width: calc(100% - 24px);
}

.mobile-menu-button {
    display: none;
    border: 0;
    background: transparent;
    color: #32465a;
    font-size: 30px;
}

/* HERO SLIDER */

.hero-slider {
    position: relative;
    width: 100%;
    aspect-ratio: 1715 / 917;
    min-height: 500px;
    max-height: 820px;
    overflow: hidden;
    background: #d5dbe1;
}

.slide {
    position: absolute;
    inset: 0;
    opacity: 0;
    visibility: hidden;
    transition:
        opacity 1.5s ease-in-out,
        visibility 1.5s ease-in-out;
}

.slide.active {
    opacity: 1;
    visibility: visible;
}

.slide > img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.slide-overlay {
    position: absolute;
    inset: 0;
    background:
        linear-gradient(
            90deg,
            rgba(22, 31, 42, 0.80) 0%,
            rgba(31, 45, 58, 0.60) 35%,
            rgba(31, 45, 58, 0.20) 65%,
            rgba(31, 45, 58, 0.05) 100%
        );
}

.slide-content {
    position: absolute;
    left: max(5%, calc((100% - 1500px) / 2));
    top: 50%;
    transform: translateY(-50%);
    width: min(680px, 72%);
    color: white;
    z-index: 2;
}

.slide-small-title {
    display: inline-block;
    margin-bottom: 15px;
    padding: 7px 12px;
    border-left: 3px solid #93abc0;
    background: rgba(37, 57, 75, 0.38);
    font-size: 13px;
    font-weight: 700;
    letter-spacing: 2px;
}

.slide-content h1,
.slide-content h2 {
    font-size: clamp(38px, 5.3vw, 72px);
    line-height: 1.04;
    margin-bottom: 20px;
    font-weight: 700;
    text-shadow: 0 3px 15px rgba(0, 0, 0, 0.30);
}

.slide-content p {
    max-width: 630px;
    font-size: clamp(16px, 1.4vw, 20px);
    margin-bottom: 28px;
    color: #edf3f7;
}

.slide-buttons {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
}

.primary-button,
.secondary-button,
.outline-button,
.application-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 50px;
    padding: 0 24px;
    border-radius: 4px;
    font-weight: 700;
    transition: 0.25s ease;
}

.primary-button {
    background: #6987a2;
    color: white;
    border: 1px solid #6987a2;
}

.primary-button:hover {
    background: #58738b;
    border-color: #58738b;
    transform: translateY(-2px);
}

.secondary-button {
    background: rgba(255, 255, 255, 0.12);
    color: white;
    border: 1px solid rgba(255, 255, 255, 0.65);
}

.secondary-button:hover {
    background: white;
    color: #33485d;
}

.slider-arrow {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    z-index: 10;
    width: 48px;
    height: 70px;
    border: 0;
    background: rgba(28, 42, 55, 0.32);
    color: white;
    font-size: 42px;
    line-height: 1;
    transition: 0.25s ease;
}

.slider-arrow:hover {
    background: rgba(69, 95, 118, 0.78);
}

.slider-prev {
    left: 18px;
}

.slider-next {
    right: 18px;
}

.slider-dots {
    position: absolute;
    z-index: 15;
    bottom: 23px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    align-items: center;
    gap: 9px;
}

.slider-dot {
    width: 10px;
    height: 10px;
    border: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.50);
    transition: 0.25s ease;
}

.slider-dot.active {
    width: 30px;
    border-radius: 20px;
    background: white;
}

/* KIYAFETLER */

.uniform-section {
    padding: 85px 0;
    background: #ffffff;
}

.uniform-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 22px;
}

.uniform-card {
    background: #f7f8fa;
    border: 1px solid #dde3e9;
    transition: 0.3s ease;
    overflow: hidden;
}

.uniform-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 18px 35px rgba(40, 59, 76, 0.13);
}

.uniform-image {
    aspect-ratio: 1 / 1;
    overflow: hidden;
    background: #e8ecef;
}

.uniform-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.45s ease;
}

.uniform-card:hover .uniform-image img {
    transform: scale(1.045);
}

.uniform-info {
    padding: 20px 18px 22px;
}

.uniform-info h3 {
    color: #2d4155;
    font-size: 19px;
    margin-bottom: 6px;
}

.uniform-info p {
    color: #7a8490;
    font-size: 14px;
}

.center-button {
    text-align: center;
    margin-top: 35px;
}

.outline-button {
    color: #526f88;
    border: 1px solid #7890a5;
    background: white;
}

.outline-button:hover {
    background: #667f96;
    color: white;
}

/* HİZMETLER */

.services-section {
    padding: 85px 0;
    background:
        linear-gradient(
            180deg,
            #eef1f4 0%,
            #f7f8fa 100%
        );
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}

.service-card {
    min-height: 290px;
    padding: 30px 26px;
    background: white;
    border: 1px solid #dbe1e7;
    position: relative;
    overflow: hidden;
    transition: 0.3s ease;
}

.service-card::before {
    content: "";
    position: absolute;
    width: 120px;
    height: 120px;
    right: -55px;
    top: -55px;
    border-radius: 50%;
    background: rgba(103, 132, 157, 0.09);
}

.service-card:hover {
    transform: translateY(-6px);
    border-color: #8da2b5;
    box-shadow: 0 18px 40px rgba(31, 48, 64, 0.10);
}

.service-number {
    font-size: 38px;
    font-weight: 700;
    color: #a6b6c4;
    margin-bottom: 30px;
}

.service-card h3 {
    color: #2f465b;
    font-size: 21px;
    margin-bottom: 12px;
}

.service-card p {
    color: #7a8490;
    font-size: 15px;
}

/* EĞİTİM */

.training-section {
    position: relative;
    min-height: 500px;
    display: flex;
    align-items: center;
    background:
        linear-gradient(
            120deg,
            #354a5d 0%,
            #5f7c96 50%,
            #839bab 100%
        );
    overflow: hidden;
}

.training-section::before {
    content: "";
    position: absolute;
    inset: 0;
    background:
        radial-gradient(
            circle at 75% 35%,
            rgba(255, 255, 255, 0.16),
            transparent 28%
        );
}

.training-overlay {
    position: absolute;
    inset: 0;
    background: rgba(23, 35, 46, 0.16);
}

.training-content {
    position: relative;
    z-index: 2;
    color: white;
}

.training-content span {
    display: inline-block;
    letter-spacing: 2px;
    font-size: 13px;
    font-weight: 700;
    margin-bottom: 12px;
    color: #dce8f1;
}

.training-content h2 {
    max-width: 680px;
    font-size: clamp(36px, 5vw, 60px);
    line-height: 1.05;
    margin-bottom: 18px;
}

.training-content p {
    max-width: 660px;
    margin-bottom: 25px;
    color: #eef3f7;
    font-size: 17px;
}

/* BAŞVURU */

.application-section {
    padding: 70px 0;
    background: #ffffff;
    border-top: 1px solid #e2e6ea;
}

.application-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 40px;
}

.application-container span {
    color: #728ca3;
    font-weight: 700;
    letter-spacing: 2px;
    font-size: 13px;
}

.application-container h2 {
    max-width: 750px;
    font-size: clamp(30px, 4vw, 46px);
    color: #2e4357;
    line-height: 1.15;
    margin: 9px 0 12px;
}

.application-container p {
    color: #77818b;
    max-width: 700px;
}

.application-button {
    flex-shrink: 0;
    background: #405a72;
    color: white;
    border: 1px solid #405a72;
}

.application-button:hover {
    background: #617e97;
    border-color: #617e97;
}

/* FOOTER */

.site-footer {
    background: #263746;
    color: white;
}

.footer-container {
    width: min(94%, 1500px);
    margin: 0 auto;
    padding: 58px 0 42px;
    display: grid;
    grid-template-columns: 1.4fr 1fr 1fr 1.3fr;
    gap: 45px;
}

.footer-logo {
    width: 155px;
    max-height: 75px;
    object-fit: contain;
    margin-bottom: 20px;
    background: white;
    padding: 5px;
}

.footer-about p {
    max-width: 310px;
    color: #cbd5de;
}

.footer-column h3 {
    margin-bottom: 18px;
    color: white;
    font-size: 18px;
}

.footer-column > a {
    display: block;
    color: #cbd5de;
    margin-bottom: 9px;
    transition: 0.2s;
}

.footer-column > a:hover {
    color: white;
    padding-left: 4px;
}

.footer-contact p {
    margin-bottom: 12px;
    color: #cbd5de;
}

.footer-contact a {
    color: #dbe7ef;
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.10);
    text-align: center;
    padding: 18px;
    color: #aebdca;
    font-size: 14px;
}

/* RESPONSIVE */

@media (max-width: 1150px) {
    .main-nav {
        gap: 2px;
    }

    .main-nav a {
        padding-left: 8px;
        padding-right: 8px;
        font-size: 14px;
    }

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

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

    .site-logo {
        width: 125px;
        max-height: 62px;
    }

    .mobile-menu-button {
        display: block;
        cursor: pointer;
    }

    .main-nav {
        position: absolute;
        left: 0;
        right: 0;
        top: 76px;
        display: none;
        flex-direction: column;
        align-items: stretch;
        gap: 0;
        background: white;
        border-top: 1px solid #e2e6ea;
        box-shadow: 0 12px 28px rgba(26, 39, 50, 0.12);
    }

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

    .main-nav a {
        padding: 14px 4%;
        border-bottom: 1px solid #edf0f2;
    }

    .main-nav a::after {
        display: none;
    }

    .hero-slider {
        min-height: 600px;
    }

    .slide-content {
        width: 82%;
    }

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

@media (max-width: 650px) {
    .hero-slider {
        aspect-ratio: auto;
        height: 620px;
    }

    .slide-content {
        width: calc(100% - 60px);
        left: 30px;
    }

    .slide-overlay {
        background: rgba(24, 36, 48, 0.62);
    }

    .slide-content h1,
    .slide-content h2 {
        font-size: 40px;
    }

    .slider-arrow {
        width: 36px;
        height: 56px;
        font-size: 32px;
    }

    .slider-prev {
        left: 4px;
    }

    .slider-next {
        right: 4px;
    }

    .uniform-grid,
    .services-grid {
        grid-template-columns: 1fr;
    }

    .application-container {
        flex-direction: column;
        align-items: flex-start;
    }

    .footer-container {
        grid-template-columns: 1fr;
        gap: 28px;
    }
}