/* ============================================
   VTA Group - Professional Backgrounds
   Modern, maritime-themed section backgrounds
   with real images, overlays & wave dividers
   ============================================ */

/* ---- Body ---- */
body {
    background-color: #F5F5F5;
}

/* ---- Wave divider (SVG between sections) ---- */
.section {
    position: relative;
}

.section::before {
    content: '';
    position: absolute;
    top: -1px;
    left: 0;
    width: 100%;
    height: 60px;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 1440 60'%3E%3Cpath fill='%23F1EFEE' d='M0,0 C360,50 1080,50 1440,0 L1440,0 L0,0 Z'/%3E%3C/svg%3E");
    background-size: cover;
    z-index: 2;
    pointer-events: none;
}

/* ---- ABOUT section — ảnh biển mờ nền ---- */
.about {
    position: relative;
    overflow: hidden;
    background-color: #FFFFFF;
}

.about::after {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    bottom: 0;
    left: 50%;
    background: url('../images/banner/banner-2.jpg') center/cover no-repeat;
    opacity: 0.04;
    pointer-events: none;
}

.about::before {
    content: '';
    position: absolute;
    bottom: -30px;
    left: 0;
    width: 100%;
    height: 60px;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 1440 60'%3E%3Cpath fill='%23F1EFEE' d='M0,60 C360,10 1080,10 1440,60 L1440,60 L0,60 Z'/%3E%3C/svg%3E");
    background-size: cover;
    z-index: 2;
    pointer-events: none;
}

.about__inner {
    position: relative;
    z-index: 1;
}

.about__image-wrapper {
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.18);
    border: 3px solid rgba(0, 0, 0, 0.12);
}

.about__image-badge {
    background: linear-gradient(135deg, #000000, #333333);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.28);
}

.about__stat {
    padding: 15px 10px;
    border-radius: 8px;
    transition: all 0.3s ease;
}

.about__stat:hover {
    background: rgba(0, 0, 0, 0.06);
    transform: translateY(-3px);
}

/* ---- SERVICES section — dark maritime bg ---- */
.services.section--gray {
    background: linear-gradient(160deg, #000000 0%, #1A1A1A 55%, #333333 100%);
    background-image:
        url('../images/banner/banner-1.jpg');
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
    position: relative;
    padding: 80px 0;
}

.services.section--gray::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(160deg, rgba(0, 0, 0, 0.94) 0%, rgba(20, 20, 20, 0.9) 58%, rgba(70, 70, 70, 0.72) 100%);
    z-index: 0;
}

.services.section--gray::before {
    content: '';
    position: absolute;
    inset: 0;
    background-image: url("data:image/svg+xml,%3Csvg width='60' height='60' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M60 0v60M0 60h60' fill='none' stroke='%23FFFFFF' stroke-opacity='0.08' stroke-width='0.5'/%3E%3Ccircle cx='60' cy='60' r='1.2' fill='%23FFFFFF' fill-opacity='0.1'/%3E%3C/svg%3E");
    z-index: 1;
    pointer-events: none;
}

.services.section--gray .container {
    position: relative;
    z-index: 2;
}

.services.section--gray .section__label,
.services.section--gray .section__title,
.services.section--gray .section__desc {
    color: #FFFFFF;
}

.services.section--gray .section__label {
    color: #1dafec;
}

.services__item {
    border: 1px solid rgba(255,255,255,0.1);
    background: rgba(255,255,255,0.95);
    backdrop-filter: blur(10px);
}

.services__item:hover {
    border-color: rgba(0, 0, 0, 0.2);
    box-shadow: 0 15px 40px rgba(0,0,0,0.2);
    transform: translateY(-8px);
}

.services__icon {
    background: linear-gradient(135deg, rgba(0, 0, 0, 0.08), rgba(80, 80, 80, 0.08));
    border: 1px solid rgba(0, 0, 0, 0.14);
}

.services__item:hover .services__icon {
    background: linear-gradient(135deg, #000000, #333333);
    border-color: transparent;
    box-shadow: 0 6px 15px rgba(0, 0, 0, 0.26);
}

/* ---- CAPABILITY section ---- */
.capability {
    position: relative;
    overflow: hidden;
}

.capability::before {
    content: '';
    position: absolute;
    inset: 0;
    background-image: url("data:image/svg+xml,%3Csvg width='90' height='90' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M90 0v90M0 90h90' fill='none' stroke='%23000000' stroke-opacity='0.035' stroke-width='0.5'/%3E%3C/svg%3E");
    pointer-events: none;
}

.capability .container {
    position: relative;
    z-index: 1;
}

/* ---- INDUSTRIES section ---- */
.industries.section--gray {
    background: linear-gradient(180deg, #F5F5F5 0%, #FFFFFF 100%);
}

/* ---- WHY CHOOSE US — white with wave ---- */
.why-us.section {
    background: #FFFFFF;
    position: relative;
    overflow: hidden;
}

.why-us.section::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 200px;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 1440 200'%3E%3Cpath fill='%23000000' fill-opacity='0.04' d='M0,100 C320,160 520,40 720,100 C920,160 1120,40 1440,100 L1440,200 L0,200 Z'/%3E%3Cpath fill='%23555555' fill-opacity='0.04' d='M0,120 C280,180 580,60 780,120 C980,180 1180,60 1440,120 L1440,200 L0,200 Z'/%3E%3C/svg%3E");
    background-size: cover;
    pointer-events: none;
}

.why-us__item {
    border: 1px solid rgba(0, 0, 0, 0.08);
    background: linear-gradient(180deg, #FFFFFF 0%, #F5F5F5 100%);
    position: relative;
    z-index: 1;
}

.why-us__item:hover {
    background: linear-gradient(180deg, #FFFFFF 0%, rgba(90, 176, 199, 0.12) 100%);
    border-color: rgba(90, 176, 199, 0.42);
    box-shadow: 0 10px 30px rgba(90, 176, 199, 0.18);
    transform: translateY(-5px);
}

.why-us__icon {
    background: linear-gradient(135deg, #5AB0C7, #3D91A7);
    border: 2px solid rgba(90, 176, 199, 0.28);
}

.why-us__item:hover .why-us__icon {
    background: linear-gradient(135deg, #000000, #333333);
    border-color: transparent;
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.28);
}

/* ---- FLEET section — dark bg with real image ---- */
.fleet.section--gray {
    background: url('../images/banner/banner-3.jpg') center/cover no-repeat fixed;
    position: relative;
}

.fleet.section--gray::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, rgba(0, 0, 0, 0.94) 0%, rgba(24, 24, 24, 0.9) 100%);
    z-index: 0;
}

.fleet.section--gray::before {
    content: '';
    position: absolute;
    inset: 0;
    background-image: url("data:image/svg+xml,%3Csvg width='80' height='80' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M80 0v80M0 80h80' fill='none' stroke='%23FFFFFF' stroke-opacity='0.05' stroke-width='0.5'/%3E%3C/svg%3E");
    z-index: 1;
    pointer-events: none;
}

.fleet.section--gray .container {
    position: relative;
    z-index: 2;
}

.fleet.section--gray .section__label,
.fleet.section--gray .section__title,
.fleet.section--gray .section__desc {
    color: #FFFFFF;
}

.fleet.section--gray .section__label {
    color: #FFFFFF;
}

.fleet__item {
    border: 1px solid rgba(255,255,255,0.08);
    background: rgba(255,255,255,0.95);
}

.fleet__item:hover {
    border-color: rgba(0, 0, 0, 0.2);
    box-shadow: 0 15px 40px rgba(0,0,0,0.25);
    transform: translateY(-8px);
}

.fleet__badge {
    background: linear-gradient(135deg, #000000, #333333);
    box-shadow: 0 3px 10px rgba(0, 0, 0, 0.28);
}

.fleet.section--gray .btn--primary {
    background: rgba(255,255,255,0.15);
    border: 2px solid rgba(255,255,255,0.4);
    color: #FFFFFF;
    backdrop-filter: blur(5px);
}

.fleet.section--gray .btn--primary:hover {
    background: #000000;
    border-color: #000000;
}

/* ---- NEWS section — clean white ---- */
.news.section {
    background: #FFFFFF;
    position: relative;
    overflow: hidden;
}

.news.section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, #000000, #555555, #000000);
    z-index: 2;
}

.news__item {
    border: 1px solid rgba(0, 0, 0, 0.08);
    transition: all 0.4s ease;
}

.news__item:hover {
    border-color: rgba(0, 0, 0, 0.2);
    box-shadow: 0 12px 35px rgba(0, 0, 0, 0.12);
    transform: translateY(-5px);
}

.news__date {
    background: linear-gradient(135deg, #000000, #333333);
    box-shadow: 0 3px 8px rgba(0, 0, 0, 0.28);
}

/* ---- PARTNERS section ---- */
.partners.section--gray {
    background: linear-gradient(180deg, #EDEDED 0%, #F5F5F5 100%);
}

.partners__item {
    background: #FFFFFF;
    border: 1px solid rgba(0, 0, 0, 0.14);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
}

.partners__item:hover {
    border-color: rgba(0, 0, 0, 0.24);
    box-shadow: 0 6px 18px rgba(0, 0, 0, 0.12);
}

/* ---- CTA section — banner bg with overlay ---- */
.cta {
    background: url('../images/banner/banner-2.jpg') center/cover no-repeat fixed;
    position: relative;
    overflow: hidden;
}

.cta::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(0, 0, 0, 0.92) 0%, rgba(24, 24, 24, 0.86) 58%, rgba(80, 80, 80, 0.68) 100%);
    z-index: 0;
}

.cta::before {
    content: '';
    position: absolute;
    inset: 0;
    background-image: url("data:image/svg+xml,%3Csvg width='60' height='60' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M60 0v60M0 60h60' fill='none' stroke='%23FFFFFF' stroke-opacity='0.06' stroke-width='0.5'/%3E%3Ccircle cx='60' cy='60' r='1.2' fill='%23FFFFFF' fill-opacity='0.08'/%3E%3C/svg%3E");
    z-index: 1;
    pointer-events: none;
}

.cta__overlay {
    display: none;
}

.cta__content {
    position: relative;
    z-index: 2;
}

/* ---- Footer ---- */
.footer {
    background: url('../images/banner/banner-1.jpg') center bottom/cover no-repeat;
    position: relative;
}

.footer::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, rgba(0, 0, 0, 0.96) 0%, rgba(0, 0, 0, 0.99) 100%);
    z-index: 0;
}

.footer::before {
    content: '';
    position: absolute;
    inset: 0;
    background-image: url("data:image/svg+xml,%3Csvg width='80' height='80' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M80 0v80M0 80h80' fill='none' stroke='%23FFFFFF' stroke-opacity='0.04' stroke-width='0.5'/%3E%3C/svg%3E");
    z-index: 1;
    pointer-events: none;
}

.footer__inner,
.footer .container {
    position: relative;
    z-index: 2;
}

.copyright {
    background: #FFFFFF;
    background-size: 200% 100%;
    position: relative;
    z-index: 2;
}

.copyright p {
    color: #000000;
    font-weight: 700;
}

/* ---- Navigation ---- */
.main-nav {
    background: #FFFFFF;
    border-bottom: 1px solid #e7ebef;
    box-shadow: none;
}

.main-nav.sticky {
    background: #FFFFFF;
    border-bottom: 1px solid #e7ebef;
}

/* ---- Header ---- */
.header {
    background: linear-gradient(180deg, #FFFFFF 0%, #F5F5F5 100%);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.08);
}

/* ---- Back to top ---- */
.back-to-top {
    background: linear-gradient(135deg, #000000, #333333);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.26);
}

.back-to-top:hover {
    background: linear-gradient(135deg, #333333, #000000);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.36);
    transform: translateY(-3px);
}

/* ---- Section title accent line ---- */
.section__title {
    position: relative;
    display: block;
}

.section__header .section__title::after {
    content: '';
    display: block;
    width: 72px;
    height: 4px;
    background: linear-gradient(90deg, #09227e, #1dafec);
    margin: 14px auto 0;
    border-radius: 2px;
}

.services.section--gray .section__header .section__title::after {
    background: linear-gradient(90deg, #1dafec 0%, #09227e 50%, #1dafec 100%);
    box-shadow: 0 0 14px rgba(29, 175, 236, 0.45);
}

/* ---- Buttons ---- */
.btn--primary {
    background: linear-gradient(135deg, #000000, #5AB0C7);
    border-color: transparent;
    box-shadow: 0 4px 12px rgba(90, 176, 199, 0.26);
}

.btn--primary:hover {
    background: linear-gradient(135deg, #5AB0C7, #000000);
    box-shadow: 0 6px 18px rgba(90, 176, 199, 0.3);
    transform: translateY(-2px);
}

.top-bar,
.header {
    display: none;
}