:root {
    --bg: #e9eceb;
    --ink: #0f2431;
    --muted: #4c6270;
    --brand: #008445;
    --brand-strong: #005f32;
    --navy: #062a3f;
    --line: #ccd6dc;
    --card: #ffffff;
    --shadow: 0 24px 60px rgba(6, 42, 63, 0.16);
}

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

body {
    font-family: "Plus Jakarta Sans", "Segoe UI", sans-serif;
    color: var(--ink);
    background: linear-gradient(165deg, #f4f7f6 0%, #e9eceb 42%, #f8fbfa 100%);
    line-height: 1.6;
    overflow-x: hidden;
}

.container {
    width: min(1180px, 92%);
    margin: 0 auto;
}

.detail-header {
    position: sticky;
    top: 0;
    z-index: 30;
    border-bottom: 1px solid rgba(204, 214, 220, 0.7);
    background: rgba(248, 251, 250, 0.82);
    backdrop-filter: blur(10px);
}

.detail-nav {
    min-height: 76px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
}

.brand {
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 10px;
}

.brand-mark {
    width: 50px;
    height: 50px;
    object-fit: contain;
}

.brand-text {
    font-family: "Outfit", sans-serif;
    font-weight: 700;
    color: var(--ink);
}

.back-link {
    text-decoration: none;
    border: 1px solid #96acb9;
    border-radius: 999px;
    color: var(--navy);
    background: #fff;
    padding: 10px 16px;
    font-weight: 700;
}

.detail-hero {
    position: relative;
    min-height: 62vh;
    display: grid;
    align-items: end;
    overflow: hidden;
    background: #062a3f;
}

.detail-slider,
.detail-overlay,
.detail-hero-content {
    grid-area: 1 / 1;
}

.detail-slider {
    position: absolute;
    inset: 0;
    z-index: 0;
}

.detail-slide {
    position: absolute;
    inset: 0;
    background-size: cover;
    background-position: center;
    opacity: 0;
    transform: scale(1.08);
    animation: detailFade 18s infinite ease-in-out;
}

.detail-slide.s2 { animation-delay: 6s; }
.detail-slide.s3 { animation-delay: 12s; }

.detail-overlay {
    position: absolute;
    inset: 0;
    z-index: 1;
    background:
        linear-gradient(115deg, rgba(6, 42, 63, 0.9) 0%, rgba(6, 42, 63, 0.72) 47%, rgba(0, 95, 50, 0.65) 100%),
        radial-gradient(circle at 75% 20%, rgba(255, 255, 255, 0.14) 0%, transparent 40%);
}

.detail-hero-content {
    position: relative;
    z-index: 2;
    color: #eef8f5;
    padding: 74px 0;
}

.tag {
    letter-spacing: 0.14em;
    text-transform: uppercase;
    font-weight: 800;
    font-size: 0.78rem;
    color: #8ef2bc;
}

h1,
h2 {
    font-family: "Outfit", sans-serif;
    line-height: 1.08;
}

h1 {
    font-size: clamp(2rem, 4.2vw, 4rem);
    margin-top: 12px;
    max-width: 16ch;
}

#detail-intro {
    margin-top: 14px;
    max-width: 78ch;
    color: #d2e7df;
}

.section {
    padding: 68px 0;
}

.content-grid {
    display: grid;
    grid-template-columns: 1.1fr 0.9fr;
    gap: 16px;
}

.panel {
    background: var(--card);
    border: 1px solid var(--line);
    border-radius: 16px;
    padding: 24px;
    box-shadow: 0 10px 24px rgba(15, 36, 49, 0.08);
}

.panel h2 {
    font-size: clamp(1.5rem, 2.6vw, 2.1rem);
    color: var(--ink);
    margin-bottom: 14px;
}

.panel ul {
    padding-left: 20px;
}

.panel li {
    margin-bottom: 10px;
    color: var(--muted);
}

.panel p {
    color: var(--muted);
}

.panel.accent {
    background: linear-gradient(145deg, #082335 0%, #0a415b 100%);
    border-color: rgba(189, 215, 224, 0.32);
}

.panel.accent h2,
.panel.accent p {
    color: #eaf6fa;
}

body[data-tab="general-construction"] .detail-slide {
    filter: saturate(0.92) contrast(1.04) brightness(0.9);
}

body[data-tab="general-construction"] .detail-slide.s1 {
    background-image: url("Image/general-1.jpg");
    background-position: center 42%;
}

body[data-tab="general-construction"] .detail-slide.s2 {
    background-image: url("Image/general-2.jpg");
    background-position: center 46%;
}

body[data-tab="general-construction"] .detail-slide.s3 {
    background-image: url("Image/general-3.jpg");
    background-position: center 38%;
}

body[data-tab="mep-services"] .detail-slide.s1 { background-image: url("Image/mep1.jpg"); }
body[data-tab="mep-services"] .detail-slide.s2 { background-image: url("Image/mep2.jpg"); }
body[data-tab="mep-services"] .detail-slide.s3 { background-image: url("Image/mep3.jpg"); }

body[data-tab="construction-management"] .detail-slide.s1 { background-image: url("Tabs/detail-construction-management-1.svg"); }
body[data-tab="construction-management"] .detail-slide.s2 { background-image: url("Tabs/detail-construction-management-2.svg"); }
body[data-tab="construction-management"] .detail-slide.s3 { background-image: url("Tabs/detail-construction-management-3.svg"); }

body[data-tab="interior-design-build"] .detail-slide.s1 { background-image: url("Tabs/detail-interior-design-build-1.svg"); }
body[data-tab="interior-design-build"] .detail-slide.s2 { background-image: url("Tabs/detail-interior-design-build-2.svg"); }
body[data-tab="interior-design-build"] .detail-slide.s3 { background-image: url("Tabs/detail-interior-design-build-3.svg"); }

body[data-tab="our-process"] .detail-slide.s1 { background-image: url("Tabs/detail-our-process-1.svg"); }
body[data-tab="our-process"] .detail-slide.s2 { background-image: url("Tabs/detail-our-process-2.svg"); }
body[data-tab="our-process"] .detail-slide.s3 { background-image: url("Tabs/detail-our-process-3.svg"); }

body[data-tab="why-choose-us"] .detail-slide.s1 { background-image: url("Tabs/detail-why-choose-us-1.svg"); }
body[data-tab="why-choose-us"] .detail-slide.s2 { background-image: url("Tabs/detail-why-choose-us-2.svg"); }
body[data-tab="why-choose-us"] .detail-slide.s3 { background-image: url("Tabs/detail-why-choose-us-3.svg"); }

@keyframes detailFade {
    0% { opacity: 0; transform: scale(1.08) translateX(0); }
    10% { opacity: 1; }
    30% { opacity: 1; }
    38% { opacity: 0; transform: scale(1.02) translateX(-1.2%); }
    100% { opacity: 0; transform: scale(1.08) translateX(0); }
}

@media (max-width: 980px) {
    .content-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 700px) {
    .container {
        width: min(1180px, 94%);
    }

    .detail-nav {
        flex-wrap: wrap;
        padding: 10px 0;
        gap: 10px;
    }

    .brand {
        width: 100%;
        justify-content: center;
    }

    .brand-mark {
        width: 44px;
        height: 44px;
    }

    .back-link {
        width: 100%;
        text-align: center;
    }

    .detail-hero {
        min-height: 54vh;
    }

    .detail-hero-content {
        padding: 54px 0;
    }

    h1 {
        font-size: clamp(1.8rem, 8vw, 2.5rem);
        max-width: 100%;
    }

    .panel {
        padding: 18px;
    }

    .brand-text {
        font-size: 0.95rem;
    }
}

@media (max-width: 480px) {
    .brand-text {
        display: none;
    }
}