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

:root {
    --blue: #1858c7;
    --dark-blue: #10234b;
    --text: #111d35;
    --gray: #687083;
    --light-gray: #f6f8fc;
    --border: #e2e6ee;
}

body {
    font-family: "Inter", sans-serif;
    color: var(--text);
    background: #fff;
}

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


/* ========================================
   HEADER
======================================== */


header
{
    box-sizing: border-box;
}

.header-items-container
{
    height: 100px;
    width: 100%;
    display: flex;
    text-align: center;
    justify-content: space-between;
    align-items: center;
    background-color: #000918;
    position: relative;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    padding: 20px;
}

.logo-container img, .logo-container a
{
    width: 300px;
    height: 100px;
    overflow: hidden;
}


.logo-container img
{
    object-fit: cover;
}

.header-items-container ul 
{
    list-style-type: none;
    display: flex;
    gap: 50px;
}

.header-items
{
    position: relative; /* gerekli */
    font-family: 'Inter', 'Helvetica Neue', sans-serif;
    font-weight: 600;
    letter-spacing: 0.5px;
    text-decoration: none;
    color: #fff;
    transition: color 0.3s ease;
}

.header-items:hover
{
    color: #479bd8;
}

.header-items.active
{
    color: #479bd8;
}

.header-items::after
{
    content: "";
    position: absolute;
    left: 50%;
    bottom: -8px; /* yazının biraz altında */
    width: 100%;
    height: 2px;
    background: #479bd8;
    box-shadow: 0 0 10px rgba(25,85,128,.4);
    transform: translateX(-50%) scaleX(0);
    transform-origin: center;
    transition: transform 0.35s ease;
}

.header-items:hover::after,
.header-items.active::after
{
    transform: translateX(-50%) scaleX(1);
}

.header-right-side
{
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 20px;
}



/* LOGO */

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

    min-width: 230px;
}

.logo-symbol {
    width: 39px;
    height: 39px;

    border-radius: 10px;

    background: linear-gradient(
        145deg,
        #174eb4,
        #3174dc
    );

    color: white;

    display: flex;
    align-items: center;
    justify-content: center;

    font-size: 31px;
    font-weight: 800;

    margin-right: 10px;
}

.logo-text {
    display: flex;
    flex-direction: column;
}

.logo-text strong {
    font-size: 20px;
    letter-spacing: .5px;
}

.logo-text span {
    font-size: 7px;
    font-weight: 700;

    letter-spacing: .5px;
}


/* NAVBAR */

.navbar {
    display: flex;
    align-items: center;
    gap: 38px;

    height: 100%;
}

.navbar a {
    height: 100%;

    display: flex;
    align-items: center;

    position: relative;

    font-size: 12px;
    font-weight: 700;

    color: #111827;
}

.navbar a.active {
    color: var(--blue);
}

.navbar a.active::after {
    content: "";

    position: absolute;

    height: 2px;

    background: var(--blue);

    left: 0;
    right: 0;

    bottom: 15px;
}


/* HEADER BUTTON */

.header-button {
    background: #2864cf;

    color: white;

    padding: 13px 22px;

    border-radius: 30px;

    font-size: 12px;
    font-weight: 700;

    display: flex;
    align-items: center;
    gap: 14px;
}

.header-button i {
    font-size: 13px;
}


/* ========================================
   CONTAINER
======================================== */

.container {
    max-width: 1440px;

    margin: auto;

    padding: 18px 27px 30px;
}


/* ========================================
   BREADCRUMB
======================================== */

.breadcrumb {
    height: 38px;

    display: flex;
    align-items: center;

    gap: 18px;

    margin-bottom: 5px;
}

.breadcrumb a {
    color: #2456a7;

    font-size: 12px;
    font-weight: 700;

    display: flex;
    align-items: center;
    gap: 15px;
}

.breadcrumb a i {
    font-size: 15px;
}

.breadcrumb span {
    font-size: 11px;
    color: #999;
}


/* ========================================
   PROJECT TOP
======================================== */

.project-top {
    display: grid;

    grid-template-columns: 1.2fr 1fr;

    gap: 52px;

    margin-top: 10px;
}


/* ========================================
   GALLERY
======================================== */

.gallery {
    width: 100%;
}

.main-image {
    position: relative;

    width: 100%;
    height: 350px;

    border-radius: 12px;

    overflow: hidden;

    background: #ddd;
}

.main-image img {
    width: 100%;
    height: 100%;

    object-fit: cover;

    display: block;

    transition: opacity .3s ease;
}


/* IMAGE COUNTER */

.image-counter {
    position: absolute;

    bottom: 17px;
    left: 18px;

    background: rgba(4, 20, 48, .85);

    color: white;

    padding: 9px 13px;

    border-radius: 6px;

    font-size: 11px;
    font-weight: 600;
}


/* SLIDER BUTTONS */

.slider-button {
    position: absolute;

    bottom: 15px;

    width: 39px;
    height: 39px;

    border: none;

    border-radius: 50%;

    background: rgba(7, 29, 63, .8);

    color: white;

    cursor: pointer;

    transition: .2s;
}

.slider-button:hover {
    background: var(--blue);
}

.slider-button.prev {
    right: 60px;
}

.slider-button.next {
    right: 14px;
}


/* THUMBNAILS */

.thumbnail-area {
    display: flex;

    gap: 12px;

    margin-top: 12px;
}

.thumbnails {
    display: flex;

    gap: 10px;

    flex: 1;
}

.thumbnail {
    height: 72px;

    flex: 1;

    overflow: hidden;

    border-radius: 9px;

    cursor: pointer;

    border: 2px solid transparent;
}

.thumbnail.active {
    border-color: var(--blue);
}

.thumbnail img {
    width: 100%;
    height: 100%;

    object-fit: cover;
}


/* ALL IMAGES */

.all-images {
    width: 130px;

    border: none;

    border-radius: 9px;

    background: #f0f4fc;

    color: #214b91;

    display: flex;
    align-items: center;
    justify-content: center;

    flex-direction: column;

    gap: 6px;

    cursor: pointer;

    font-size: 10px;
    font-weight: 700;
}

.all-images i:first-child {
    font-size: 16px;
}


/* ========================================
   PROJECT INFO
======================================== */

.project-info {
    padding-top: 0;
}

.project-type {
    color: #2c5da4;

    font-size: 11px;

    font-weight: 800;

    letter-spacing: .3px;
}

.project-info h1 {
    font-size: 34px;

    line-height: 1.15;

    margin: 14px 0 17px;

    color: #11244a;
}

.description {
    max-width: 610px;

    color: #626a7a;

    font-size: 13px;

    line-height: 1.8;

    margin-bottom: 22px;
}


/* ========================================
   META
======================================== */

.project-meta {
    display: grid;

    grid-template-columns: repeat(3, 1fr);

    border-bottom: 1px solid #e7e9ee;

    padding-bottom: 17px;

    margin-bottom: 19px;
}

.meta-item {
    display: flex;

    align-items: center;

    gap: 12px;

    border-right: 1px solid #e5e7eb;

    padding-right: 10px;

    margin-right: 15px;
}

.meta-item:last-child {
    border: none;
}

.meta-item > i {
    color: #3069c9;

    font-size: 22px;

    width: 27px;
}

.meta-item div {
    display: flex;
    flex-direction: column;

    gap: 5px;
}

.meta-item span {
    color: #707786;

    font-size: 10px;
}

.meta-item strong {
    color: #16233b;

    font-size: 11px;
}


/* ========================================
   SECTION TITLE
======================================== */

.section-title {
    font-size: 11px;

    font-weight: 800;

    margin-bottom: 14px;

    color: #15294e;
}


/* ========================================
   SERVICE CARDS
======================================== */

.service-cards {
    display: grid;

    grid-template-columns: repeat(3, 1fr);

    gap: 10px;
}

.service-card {
    min-height: 105px;

    border: 1px solid #e3e6ec;

    border-radius: 9px;

    padding: 12px;

    position: relative;
}

.service-icon {
    width: 31px;
    height: 31px;

    border-radius: 7px;

    color: #2862c4;

    background: #f2f6ff;

    display: flex;
    align-items: center;
    justify-content: center;

    font-size: 18px;

    margin-bottom: 7px;
}

.service-card h3 {
    font-size: 11px;

    margin-bottom: 6px;

    color: #1a2943;
}

.service-card p {
    color: #717887;

    font-size: 9px;

    line-height: 1.5;
}


/* ========================================
   ACTION BUTTONS
======================================== */

.action-buttons {
    display: grid;

    grid-template-columns: 1fr 1fr;

    gap: 14px;

    margin-top: 24px;
}

.offer-button,
.pdf-button {
    height: 45px;

    border-radius: 8px;

    display: flex;
    align-items: center;
    justify-content: center;

    gap: 12px;

    font-size: 11px;

    font-weight: 800;
}

.offer-button {
    background: #2761ce;

    color: white;
}

.pdf-button {
    border: 1px solid #d8dce3;

    color: #263244;

    background: white;
}


/* ========================================
   BOTTOM SECTION
======================================== */

.bottom-section {
    display: grid;

    grid-template-columns: 1.15fr .9fr 1.15fr;

    gap: 48px;

    margin-top: 47px;
}

.bottom-column {
    min-width: 0;
}

.bottom-column + .bottom-column {
    border-left: 1px solid #e8e9ed;

    padding-left: 42px;
}


/* SECTION HEADING */

.section-heading {
    display: flex;

    align-items: center;

    gap: 10px;

    font-size: 11px;

    font-weight: 800;

    margin-bottom: 23px;
}

.section-heading span {
    display: block;

    width: 27px;
    height: 2px;

    background: #326ac7;
}


/* ABOUT */

.about-text {
    font-size: 11px;

    line-height: 1.8;

    color: #666e7d;

    margin-bottom: 18px;
}

.feature-list {
    list-style: none;

    display: flex;

    flex-direction: column;

    gap: 13px;
}

.feature-list li {
    display: flex;

    align-items: center;

    gap: 10px;

    font-size: 10px;

    color: #555e6e;
}

.feature-list i {
    color: #3d71c5;

    font-size: 14px;
}


/* ========================================
   TECHNICAL TABLE
======================================== */

.technical-table {
    width: 100%;
}

.table-row {
    display: grid;

    grid-template-columns: 1fr 1fr;

    padding: 8px 0;

    border-bottom: 1px solid #e6e8ed;

    font-size: 10px;
}

.table-row strong {
    color: #687080;
}

.table-row span {
    color: #5b6473;
}


/* ========================================
   BRANDS
======================================== */

.brand-grid {
    display: grid;

    grid-template-columns: repeat(4, 1fr);

    gap: 12px;
}

.brand {
    height: 56px;

    border: 1px solid #e2e5ea;

    border-radius: 7px;

    display: flex;

    align-items: center;
    justify-content: center;

    font-size: 17px;

    font-weight: 800;

    color: #329253;
}

.brand.siemens {
    color: #158a8a;
    font-size: 16px;
}

.brand.legrand {
    color: #333;
    font-size: 12px;
}

.brand.abb {
    color: #c52b2e;
    font-size: 18px;
}

.brand.hikvision {
    color: #bc292c;
    font-size: 12px;
}

.brand.philips {
    color: #1264a8;
    font-size: 17px;
}


/* ========================================
   CTA
======================================== */

.bottom-cta {
    margin-top: 38px;

    min-height: 75px;

    padding: 12px 28px;

    border-radius: 11px;

    background: #f3f6fc;

    display: flex;

    align-items: center;

    justify-content: space-between;
}

.cta-left {
    display: flex;

    align-items: center;

    gap: 18px;
}

.cta-icon {
    width: 42px;
    height: 42px;

    border-radius: 8px;

    background: #e8effd;

    color: #2864c7;

    display: flex;

    align-items: center;
    justify-content: center;

    font-size: 18px;
}

.cta-left strong {
    font-size: 12px;
}

.cta-left p {
    font-size: 10px;

    color: #707786;

    margin-top: 5px;
}

.contact-button {
    height: 45px;

    min-width: 250px;

    padding: 0 25px;

    border-radius: 8px;

    background: #10244a;

    color: white;

    display: flex;

    align-items: center;
    justify-content: space-between;

    font-size: 11px;

    font-weight: 800;
}


/* ========================================
   RESPONSIVE
======================================== */

@media (max-width: 1100px) {

    .navbar {
        gap: 18px;
    }

    .navbar a {
        font-size: 10px;
    }

    .project-top {
        gap: 30px;
    }

    .bottom-section {
        gap: 25px;
    }

    .bottom-column + .bottom-column {
        padding-left: 25px;
    }

}


/* TABLET */

@media (max-width: 850px) {

    .header {
        height: auto;

        padding: 15px 20px;

        flex-wrap: wrap;

        gap: 15px;
    }

    .navbar {
        order: 3;

        width: 100%;

        justify-content: center;

        overflow-x: auto;

        padding-bottom: 5px;
    }

    .navbar a {
        white-space: nowrap;
    }

    .navbar a.active::after {
        bottom: 0;
    }

    .project-top {
        grid-template-columns: 1fr;
    }

    .main-image {
        height: 400px;
    }

    .bottom-section {
        grid-template-columns: 1fr 1fr;
    }

    .systems {
        grid-column: span 2;
    }

    .bottom-column + .bottom-column {
        border-left: none;
        padding-left: 0;
    }

}


/* MOBILE */

@media (max-width: 600px) {

    .header {
        padding: 13px 15px;
    }

    .logo-area {
        min-width: auto;
    }

    .logo-text strong {
        font-size: 17px;
    }

    .header-button {
        padding: 10px 14px;

        font-size: 10px;
    }

    .navbar {
        justify-content: flex-start;

        gap: 23px;
    }

    .navbar a {
        font-size: 9px;
    }

    .container {
        padding: 15px;
    }

    .breadcrumb {
        margin-bottom: 10px;

        gap: 10px;
    }

    .project-top {
        margin-top: 0;
    }

    .main-image {
        height: 260px;

        border-radius: 9px;
    }

    .thumbnail-area {
        overflow: hidden;
    }

    .thumbnails {
        gap: 6px;
    }

    .thumbnail {
        min-width: 70px;

        height: 55px;
    }

    .all-images {
        min-width: 90px;
    }

    .project-info h1 {
        font-size: 28px;
    }

    .project-meta {
        grid-template-columns: 1fr;

        gap: 15px;
    }

    .meta-item {
        border-right: none;

        margin-right: 0;
    }

    .service-cards {
        grid-template-columns: 1fr;
    }

    .action-buttons {
        grid-template-columns: 1fr;
    }

    .bottom-section {
        grid-template-columns: 1fr;

        margin-top: 35px;
    }

    .systems {
        grid-column: auto;
    }

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

    .bottom-cta {
        flex-direction: column;

        align-items: stretch;

        gap: 20px;

        padding: 20px;
    }

    .contact-button {
        width: 100%;

        min-width: 0;
    }

}