/* ========================================
   RESET & DASAR
   ======================================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Inter', sans-serif;
    color: #1a1a1a;
    line-height: 1.6;
    background: #f9fafc;
}

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

ul {
    list-style: none;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* ========================================
   FONT SETUP - GE VERNOVA STYLE
   ======================================== */
.header-brand,
.header-slogan,
.logo-text .brand {
    font-family: 'Inter', 'Avenir Next', sans-serif;
    font-weight: 500;
    letter-spacing: 0.06em;
    text-transform: uppercase;
}

.hero-full h1,
.hero-full h1 span {
    font-family: 'Anton', sans-serif;
    font-weight: 400;
    line-height: 0.9;
    letter-spacing: -0.02em;
    text-transform: uppercase;
}

/* ========================================
   HEADER TRANSPARAN
   ======================================== */
.header-transparent {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 16px 0 10px;
    background: transparent;
}

.header-container {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    flex-wrap: wrap;
    padding: 0 5px;
}

/* KIRI: Logo + Nama */
.header-left {
    display: flex;
    align-items: center;
    gap: 14px;
    padding-left: 0;
    margin-left: 0;
    flex-shrink: 0;
}

.header-logo {
    height: 55px;
    width: auto;
}

.header-brand-wrapper {
    display: flex;
    flex-direction: column;
    line-height: 1.2;
}

.header-brand {
    color: #ffffff;
    font-size: 1.3rem;
    font-weight: 500;
    letter-spacing: 0.06em;
    text-transform: uppercase;
}

.header-slogan {
    color: rgba(255,255,255,0.70);
    font-size: 0.65rem;
    font-weight: 300;
    letter-spacing: 0.04em;
    text-transform: uppercase;
}

/* KANAN: Logo Kemnaker + LALPK */
.header-right {
    display: flex;
    align-items: center;
    gap: 10px;
    padding-right: 0;
    margin-right: 0;
    flex-shrink: 0;
}

.header-cert-logo {
    height: 35px;
    width: auto;
    max-height: 35px;
    object-fit: contain;
    background: transparent;
    padding: 0;
    border-radius: 0;
    filter: brightness(0) invert(1);
}

/* TENGAH: Menu Navigasi */
.header-nav {
    display: flex;
    align-items: center;
    gap: 20px;
    flex: 1;
    justify-content: center;
}

.nav-menu {
    display: flex;
    gap: 4px;
    flex-wrap: wrap;
}

.nav-menu > li > a {
    color: rgba(255,255,255,0.85);
    padding: 6px 14px;
    border-radius: 5px;
    transition: 0.3s;
    font-weight: 500;
    font-size: 0.85rem;
    letter-spacing: 0.3px;
}

.nav-menu > li > a:hover,
.nav-menu > li > a.active {
    background: rgba(255,255,255,0.15);
    color: #ffffff;
}

.nav-menu > li > a i {
    font-size: 0.6rem;
    margin-left: 4px;
}

/* DROPDOWN */
.dropdown {
    position: relative;
}

.dropdown-menu {
    position: absolute;
    top: 130%;
    left: 0;
    background: #ffffff;
    min-width: 220px;
    border-radius: 8px;
    box-shadow: 0 8px 30px rgba(0,0,0,0.12);
    opacity: 0;
    visibility: hidden;
    transition: 0.3s ease;
    padding: 8px 0;
    z-index: 100;
}

.dropdown:hover .dropdown-menu {
    opacity: 1;
    visibility: visible;
    top: 100%;
}

.dropdown-menu li a {
    display: block;
    padding: 10px 20px;
    color: #1a1a1a;
    font-size: 0.85rem;
    font-weight: 400;
    transition: 0.2s;
    border-left: 3px solid transparent;
}

.dropdown-menu li a:hover {
    background: #f0f4f9;
    border-left-color: #00a3ff;
    color: #0a2a43;
}

.hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
    padding: 5px;
}

.hamburger span {
    width: 28px;
    height: 3px;
    background: white;
    border-radius: 3px;
    transition: 0.3s;
}

/* ========================================
   HERO - OVERLAY MIRING KE KANAN
   ======================================== */
.hero-full {
    position: relative;
    min-height: 65vh;
    display: flex;
    align-items: center;
    justify-content: flex-start;
    color: white;
    padding: 80px 0 50px;
    background: url('images/oil-gas.png') center center / cover no-repeat;
    overflow: hidden;
}

.hero-full .hero-overlay {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.40);
    z-index: 1;
}

.hero-slant {
    position: absolute;
    top: 0;
    left: 0;
    bottom: 0;
    width: 65%;
    background: rgba(0, 0, 0, 0.82);
    z-index: 2;
    transform: skewX(-12deg);
    transform-origin: top left;
    border-right: 4px solid #00a3ff;
}

.hero-full .hero-content-center {
    position: relative;
    z-index: 3;
    max-width: 900px;
    margin: 0;
    padding: 0 20px 0 80px;
    width: 100%;
}

.hero-text-wrapper {
    display: flex;
    align-items: flex-start;
    gap: 30px;
    max-width: 750px;
    margin: 0;
}

.hero-underline {
    width: 6px;
    min-height: 100px;
    background: #00a3ff;
    border-radius: 4px;
    flex-shrink: 0;
    margin-top: 8px;
}

.hero-text {
    text-align: left;
    flex: 1;
}

.hero-full h1 {
    font-family: 'Anton', sans-serif;
    font-size: 4.2rem;
    font-weight: 400;
    line-height: 0.9;
    margin-bottom: 8px;
    text-shadow: 0 2px 20px rgba(0,0,0,0.5);
    text-transform: uppercase;
    letter-spacing: -0.02em;
}

.hero-full h1 span {
    font-family: 'Anton', sans-serif;
    font-weight: 400;
    color: #66ccff;
    font-size: 3.6rem;
    text-transform: uppercase;
    letter-spacing: 0.02em;
}

.hero-full p {
    font-family: 'Inter', sans-serif;
    font-size: 1rem;
    color: rgba(255,255,255,0.85);
    margin-bottom: 25px;
    text-shadow: 0 2px 10px rgba(0,0,0,0.5);
    text-transform: uppercase;
    letter-spacing: 1px;
    font-weight: 300;
}

.hero-full .btn-primary {
    text-transform: uppercase;
    letter-spacing: 1.5px;
    font-weight: 600;
}

/* ========================================
   BUTTONS
   ======================================== */
.btn-primary {
    display: inline-block;
    background: #00a3ff;
    color: white;
    padding: 14px 36px;
    border-radius: 40px;
    font-weight: 600;
    font-size: 1rem;
    transition: 0.3s;
    border: none;
    cursor: pointer;
    text-decoration: none;
    text-transform: uppercase;
    letter-spacing: 1.5px;
}

.btn-primary:hover {
    background: #0077cc;
    transform: translateY(-3px);
    box-shadow: 0 8px 20px rgba(0,163,255,0.4);
}

.btn-secondary {
    display: inline-block;
    background: #00a3ff;
    color: white;
    padding: 10px 28px;
    border-radius: 30px;
    font-weight: 600;
    font-size: 0.9rem;
    transition: 0.3s;
    border: none;
    cursor: pointer;
    text-decoration: none;
}

.btn-secondary:hover {
    background: #0077cc;
    transform: scale(1.05);
    box-shadow: 0 6px 16px rgba(0,163,255,0.3);
}

/* ========================================
   SECTION TITLE
   ======================================== */
.section-title {
    font-family: 'Inter', sans-serif;
    font-size: 2.2rem;
    font-weight: 700;
    color: #0a2a43;
    text-align: center;
    margin-bottom: 40px;
    border-bottom: 4px solid #00a3ff;
    padding-bottom: 12px;
    display: inline-block;
    text-transform: uppercase;
    letter-spacing: 3px;
}

/* ========================================
   SECTION SUBTITLE (RATA KIRI)
   ======================================== */
.section-subtitle {
    text-align: left;
    color: #4a5568;
    font-size: 1rem;
    margin-bottom: 40px;
    font-weight: 300;
    letter-spacing: 0.5px;
}

/* ========================================
   CORE VALUES
   ======================================== */
.core-values {
    background: #ffffff;
    padding: 60px 0;
}

.values-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
}

.value-item {
    background: #f7fafc;
    padding: 30px 20px;
    border-radius: 16px;
    text-align: center;
    transition: 0.3s;
    border: 1px solid #eef2f7;
    min-height: 180px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
}

.value-item:hover {
    transform: translateY(-6px);
    box-shadow: 0 8px 24px rgba(0,0,0,0.08);
    border-color: #00a3ff;
}

.value-item i {
    font-size: 2.8rem;
    color: #00a3ff;
    margin-bottom: 12px;
}

.value-item h4 {
    font-family: 'Inter', sans-serif;
    font-size: 1.2rem;
    font-weight: 700;
    color: #0a2a43;
    margin-bottom: 6px;
}

.value-item p {
    font-size: 0.95rem;
    color: #4a5568;
}

/* ========================================
   WHY CHOOSE US & CERTIFICATIONS
   ======================================== */
.why-choose,
.certifications-section,
.courses-preview,
.partners-section {
    padding: 60px 0;
}

.why-grid,
.cert-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
}

.why-item,
.cert-item {
    background: #ffffff;
    padding: 25px 20px;
    border-radius: 16px;
    text-align: center;
    border: 1px solid #eef2f7;
    transition: 0.3s;
    min-height: 180px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
}

.why-item:hover,
.cert-item:hover {
    transform: translateY(-6px);
    box-shadow: 0 8px 24px rgba(0,0,0,0.08);
    border-color: #00a3ff;
}

.why-item i {
    font-size: 2.8rem;
    color: #00a3ff;
    margin-bottom: 12px;
}

.why-item h4 {
    font-family: 'Inter', sans-serif;
    font-size: 1.2rem;
    font-weight: 700;
    color: #0a2a43;
    margin-bottom: 6px;
}

.why-item p {
    font-size: 0.95rem;
    color: #4a5568;
}

.cert-item img {
    height: 60px;
    width: auto;
    object-fit: contain;
    margin-bottom: 12px;
}

.cert-item span {
    display: block;
    font-size: 0.85rem;
    font-weight: 600;
    color: #0a2a43;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* ========================================
   COURSES SLIDER
   ======================================== */
.courses-preview {
    background: #f0f6fe;
    overflow: hidden;
}

.courses-slider-wrapper {
    position: relative;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 60px;
}

.courses-slider-container {
    overflow: hidden;
    border-radius: 16px;
}

.courses-slider {
    display: flex;
    gap: 25px;
    transition: transform 0.5s ease;
}

.courses-slider .course-card {
    flex: 0 0 calc(25% - 19px);
    min-width: calc(25% - 19px);
    height: 320px;
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    background-size: cover;
    background-position: center;
    position: relative;
}

.courses-slider .course-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 12px 32px rgba(0,0,0,0.2);
}

.courses-slider .course-overlay {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.60);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    padding: 25px 20px 20px;
    text-align: center;
    transition: background 0.3s ease;
}

.courses-slider .course-card:hover .course-overlay {
    background: rgba(0, 0, 0, 0.75);
}

.courses-slider .course-overlay h3 {
    font-family: 'Inter', sans-serif;
    color: #ffffff;
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 8px;
    line-height: 1.3;
    text-shadow: 0 2px 12px rgba(0,0,0,0.8);
    min-height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
}

.courses-slider .course-overlay p {
    color: rgba(255,255,255,0.85);
    font-size: 0.85rem;
    margin-bottom: 12px;
    line-height: 1.4;
    text-shadow: 0 1px 8px rgba(0,0,0,0.5);
    min-height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    flex: 0 1 auto;
}

.courses-slider .course-overlay .btn-secondary {
    background: #00a3ff;
    color: white;
    padding: 8px 24px;
    border-radius: 30px;
    font-weight: 600;
    font-size: 0.8rem;
    transition: 0.3s;
    border: none;
    cursor: pointer;
    text-decoration: none;
    display: inline-block;
    margin-top: auto;
    align-self: center;
    flex-shrink: 0;
}

.courses-slider .course-overlay .btn-secondary:hover {
    background: #0077cc;
    transform: scale(1.05);
    box-shadow: 0 6px 16px rgba(0,163,255,0.3);
}

/* Slider Arrow */
.slider-arrow {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: white;
    border: none;
    box-shadow: 0 4px 12px rgba(0,0,0,0.15);
    cursor: pointer;
    transition: opacity 0.3s ease, background 0.3s ease, transform 0.3s ease;
    z-index: 10;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    color: #0a2a43;
}

.slider-arrow:hover {
    background: #00a3ff;
    color: white;
    transform: translateY(-50%) scale(1.05);
}

.slider-arrow.hidden {
    opacity: 0;
    pointer-events: none;
}

.slider-arrow-left {
    left: -10px;
}

.slider-arrow-right {
    right: -10px;
}

/* Slider Dots */
.slider-dots {
    display: flex;
    justify-content: center;
    gap: 10px;
    margin-top: 25px;
}

.slider-dots .dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: #d0d7e2;
    cursor: pointer;
    transition: 0.3s;
}

.slider-dots .dot.active {
    background: #00a3ff;
    transform: scale(1.2);
}

/* ========================================
   OUR PARTNERS - SLIDER OTOMATIS
   ======================================== */
.partners-section {
    background: #ffffff;
    overflow: hidden;
}

.partners-slider-wrapper {
    width: 100%;
    overflow: hidden;
    position: relative;
}

.partners-slider {
    display: flex;
    overflow: hidden;
}

.partners-track {
    display: flex;
    animation: scrollPartners 30s linear infinite;
    gap: 30px;
    align-items: center;
}

.partner-item {
    flex: 0 0 auto;
    width: 150px;
    height: 80px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: #f7fafc;
    border-radius: 12px;
    padding: 10px;
    border: 1px solid #eef2f7;
    transition: 0.3s;
}

.partner-item:hover {
    border-color: #00a3ff;
    box-shadow: 0 4px 16px rgba(0,163,255,0.15);
}

.partner-item img {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
    filter: none;
    opacity: 1;
    transition: 0.3s;
}

.partner-item:hover img {
    transform: scale(1.05);
}

@keyframes scrollPartners {
    0% {
        transform: translateX(0);
    }
    100% {
        transform: translateX(-50%);
    }
}

/* ========================================
   FOOTER
   ======================================== */
footer {
    background: #0a2a43;
    color: #cce0f0;
    padding: 50px 0 0;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1.5fr;
    gap: 40px;
    padding-bottom: 40px;
    border-bottom: 1px solid #1a4a6e;
}

.footer-col h4 {
    color: white;
    font-size: 1.1rem;
    margin-bottom: 18px;
    border-bottom: 2px solid #00a3ff;
    padding-bottom: 8px;
    display: inline-block;
    font-family: 'Inter', sans-serif;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.footer-col p,
.footer-col li {
    font-size: 0.9rem;
    margin-bottom: 10px;
}

.footer-col li a:hover {
    color: #00a3ff;
}

.social-links {
    display: flex;
    gap: 12px;
    margin-top: 15px;
}

.social-links a {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: #1a4a6e;
    color: white;
    border-radius: 50%;
    transition: 0.3s;
}

.social-links a:hover {
    background: #00a3ff;
    transform: translateY(-3px);
}

.footer-bottom {
    text-align: center;
    padding: 20px 0;
    font-size: 0.85rem;
    color: #8899aa;
}

/* ========================================
   RESPONSIVE
   ======================================== */
@media (max-width: 992px) {
    .values-grid,
    .why-grid,
    .cert-grid {
        grid-template-columns: 1fr 1fr;
    }
    .footer-grid {
        grid-template-columns: 1fr 1fr;
    }
    .partner-item {
        width: 120px;
        height: 70px;
    }
    .courses-slider .course-card {
        flex: 0 0 calc(50% - 13px);
        min-width: calc(50% - 13px);
    }
}

@media (max-width: 768px) {
    .header-transparent {
        position: relative;
        background: #0a2a43;
        padding: 12px 0;
    }

    .header-container {
        flex-direction: column;
        align-items: center;
        gap: 10px;
        padding: 0 5px;
    }

    .header-left {
        flex-wrap: wrap;
        justify-content: center;
        text-align: center;
        padding-left: 0;
    }

    .header-brand {
        font-size: 1rem;
    }

    .header-slogan {
        font-size: 0.55rem;
    }

    .header-right {
        order: 3;
        gap: 6px;
        padding-right: 0;
    }

    .header-cert-logo {
        height: 28px;
        max-height: 28px;
    }

    .header-nav {
        width: 100%;
        justify-content: center;
        border-top: 1px solid rgba(255,255,255,0.08);
        padding-top: 10px;
        flex: none;
    }

    .hamburger {
        display: flex;
    }

    .nav-menu {
        display: none;
        flex-direction: column;
        width: 100%;
        background: #0a2a43;
        padding: 15px 0;
        gap: 4px;
        align-items: center;
    }

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

    .nav-menu > li > a {
        display: block;
        padding: 10px 16px;
        text-align: center;
        width: 100%;
    }

    .dropdown-menu {
        position: static;
        box-shadow: none;
        background: #0e3455;
        border-radius: 0;
        opacity: 1;
        visibility: visible;
        padding: 0 0 0 20px;
        display: none;
        width: 100%;
    }

    .dropdown:hover .dropdown-menu {
        display: block;
    }

    .dropdown-menu li a {
        color: #cce0f0;
        text-align: center;
        border-left: none;
    }

    .dropdown-menu li a:hover {
        background: #1a4a6e;
        color: white;
        border-left: 3px solid #00a3ff;
    }

    .hero-full {
        min-height: 50vh;
        padding: 60px 0 30px;
        justify-content: center;
    }

    .hero-full h1 {
        font-size: 2.8rem;
    }
    .hero-full h1 span {
        font-size: 2.2rem;
    }

    .hero-slant {
        width: 80%;
        transform: skewX(-8deg);
    }

    .hero-underline {
        min-height: 70px;
        width: 4px;
    }

    .hero-text-wrapper {
        gap: 16px;
        max-width: 100%;
    }

    .hero-full .hero-content-center {
        padding: 0 20px;
    }

    .values-grid,
    .why-grid,
    .cert-grid {
        grid-template-columns: 1fr;
    }
    .footer-grid {
        grid-template-columns: 1fr;
        gap: 30px;
    }
    .section-title {
        font-size: 1.8rem;
    }

    .partner-item {
        width: 100px;
        height: 60px;
    }

    .cert-item img {
        height: 45px;
    }

    .cert-item span {
        font-size: 0.7rem;
    }

    .section-subtitle {
        font-size: 0.9rem;
    }

    .courses-slider-wrapper {
        padding: 0 40px;
    }
    .courses-slider .course-card {
        flex: 0 0 calc(100% - 0px);
        min-width: calc(100% - 0px);
        height: 280px;
    }
    .slider-arrow {
        width: 36px;
        height: 36px;
        font-size: 1rem;
    }
    .slider-arrow-left {
        left: -5px;
    }
    .slider-arrow-right {
        right: -5px;
    }
}

@media (max-width: 480px) {
    .header-logo {
        height: 40px;
    }
    .header-brand {
        font-size: 0.85rem;
    }
    .header-cert-logo {
        height: 22px;
        max-height: 22px;
    }
    .hero-full h1 {
        font-size: 2rem;
    }
    .hero-full h1 span {
        font-size: 1.6rem;
    }
    .hero-slant {
        width: 85%;
        transform: skewX(-5deg);
    }
    .hero-underline {
        min-height: 50px;
        width: 3px;
    }
    .section-title {
        font-size: 1.5rem;
    }

    .partner-item {
        width: 80px;
        height: 50px;
    }

    .cert-item {
        padding: 15px 10px;
        min-height: 120px;
    }

    .cert-item img {
        height: 35px;
    }

    .cert-item span {
        font-size: 0.6rem;
    }

    .courses-slider-wrapper {
        padding: 0 30px;
    }
    .slider-arrow {
        width: 30px;
        height: 30px;
        font-size: 0.8rem;
    }
    .slider-arrow-left {
        left: -3px;
    }
    .slider-arrow-right {
        right: -3px;
    }
}