/* =====================================================
   GLOBAL VARIABLES – FINTECH COLOR SYSTEM
===================================================== */
:root {
    --primary-gradient: linear-gradient(135deg, #0d6efd, #00d4ff);
    --dark-bg: #0b1220;
    --dark-card: #121a2f;
    --dark-soft: #1a2342;
    --accent: #00d4ff;
    --text-light: #e6eaf2;
    --text-muted: #9aa4c7;
}

/* =====================================================
   GLOBAL RESET
===================================================== */
body {
    background-color: var(--dark-bg);
    color: var(--text-light);
    font-family: 'Inter', 'Roboto', sans-serif;
    line-height: 1.7;
}

a {
    text-decoration: none;
}

/* =====================================================
   SPINNER
===================================================== */
#spinner {
    opacity: 0;
    visibility: hidden;
    transition: opacity .5s ease-out, visibility 0s linear .5s;
    z-index: 99999;
}

#spinner.show {
    visibility: visible;
    opacity: 1;
}

/* =====================================================
   BACK TO TOP
===================================================== */
.back-to-top {
    position: fixed;
    right: 30px;
    bottom: 30px;
    width: 45px;
    height: 45px;
    background: var(--primary-gradient);
    color: #fff;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 99;
    box-shadow: 0 10px 30px rgba(0,212,255,.35);
}

/* =====================================================
   BUTTONS
===================================================== */
.btn {
    font-weight: 500;
    border-radius: 50px;
    transition: .4s;
}

.btn-primary {
    background: var(--primary-gradient) !important;
    border: none;
    color: #fff;
    box-shadow: 0 10px 30px rgba(0,212,255,.25);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 20px 50px rgba(0,212,255,.45);
}

.btn-dark {
    background: var(--dark-card) !important;
    border: 1px solid rgba(255,255,255,.1);
    color: #fff;
}

.btn-dark:hover {
    background: var(--dark-soft) !important;
}

/* =====================================================
   TOPBAR
===================================================== */
.topbar {
    background: linear-gradient(90deg, #0b1220, #121a2f);
    border-bottom: 1px solid rgba(255,255,255,.06);
}

.topbar a {
    color: var(--text-muted);
}

/* =====================================================
   NAVBAR
===================================================== */
.navbar {
    background: rgba(11,18,32,.95) !important;
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(255,255,255,.06);
}

.navbar-brand h1 {
    font-weight: 700;
    letter-spacing: .5px;
}

.navbar .nav-link {
    color: #cfd6f6 !important;
    font-weight: 500;
}

.navbar .nav-link:hover,
.navbar .nav-link.active {
    color: var(--accent) !important;
}

/* =====================================================
   HERO / CAROUSEL
===================================================== */
.header-carousel .header-carousel-item::after {
    background: linear-gradient(
        to bottom,
        rgba(11,18,32,.65),
        rgba(11,18,32,.95)
    ) !important;
}

.header-carousel h1 {
    font-weight: 700;
    letter-spacing: .6px;
}

.owl-prev,
.owl-next {
    background: var(--primary-gradient);
    color: #fff;
}

/* =====================================================
   ABOUT SECTION
===================================================== */
.about {
    background: linear-gradient(180deg, #0b1220, #121a2f);
}

.about img {
    border-radius: 18px;
    box-shadow: 0 30px 60px rgba(0,0,0,.45);
}

/* =====================================================
   SERVICES
===================================================== */
.service {
    background: var(--dark-bg);
}

.service .service-item {
    background: var(--dark-card);
    border-radius: 18px;
    border: 1px solid rgba(255,255,255,.06);
    box-shadow: 0 20px 50px rgba(0,0,0,.6);
    transition: .5s;
}

.service .service-item:hover {
    transform: translateY(-10px);
    box-shadow: 0 30px 80px rgba(0,212,255,.25);
}

.service .service-item h4,
.service .service-item p {
    color: var(--text-light);
}

/* =====================================================
   PROJECT / INSIGHTS
===================================================== */
.project {
    background: linear-gradient(180deg, #121a2f, #0b1220);
}

.project .project-content {
    background: var(--dark-card);
    border-radius: 16px;
    border: 1px solid rgba(255,255,255,.05);
}

/* =====================================================
   FORMS
===================================================== */
.form-control {
    background: var(--dark-soft);
    border: 1px solid rgba(255,255,255,.08);
    color: #fff;
}

.form-control::placeholder {
    color: #9aa4c7;
}

.form-control:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 .15rem rgba(0,212,255,.25);
    background: var(--dark-soft);
    color: #fff;
}

/* =====================================================
   FOOTER
===================================================== */
.footer {
    background: #070b16;
    border-top: 1px solid rgba(255,255,255,.06);
}

.footer a {
    color: #b6c0e6;
}

.footer a:hover {
    color: var(--accent);
}

/* =====================================================
   COPYRIGHT
===================================================== */
.copyright {
    background: #05080f !important;
    color: #8a92b2;
    border-top: 1px solid rgba(255,255,255,.05);
}
/* =====================================================
   MOBILE OPTIMIZATION – RETAIN DARK FINTECH COLORS
===================================================== */
@media (max-width: 991px) {

    /* BODY & GLOBAL */
    body {
        background-color: var(--dark-bg) !important;
        color: var(--text-light) !important;
    }

    /* TOPBAR */
    .topbar {
        background: linear-gradient(90deg, #0b1220, #121a2f) !important;
        border-bottom: 1px solid rgba(255,255,255,.06);
    }

    /* NAVBAR */
    .navbar {
        background: rgba(11,18,32,.98) !important;
        backdrop-filter: blur(8px);
    }

    .navbar-collapse {
        background: var(--dark-bg);
        padding: 15px;
        border-radius: 12px;
        box-shadow: 0 20px 50px rgba(0,0,0,.6);
    }

    .navbar .nav-link {
        color: #cfd6f6 !important;
        padding: 12px 10px;
        border-bottom: 1px solid rgba(255,255,255,.05);
    }

    .navbar .nav-link:last-child {
        border-bottom: none;
    }

    /* HERO / HEADER */
    .header-carousel h1 {
        font-size: 1.8rem;
        line-height: 1.3;
    }

    .header-carousel p {
        color: var(--text-muted);
        font-size: 1rem;
    }

    /* ABOUT */
    .about {
        background: linear-gradient(180deg, #0b1220, #121a2f) !important;
    }

    .about img {
        box-shadow: 0 20px 40px rgba(0,0,0,.55);
        margin-bottom: 20px;
    }

    /* SERVICE CARDS */
    .service .service-item {
        background: var(--dark-card) !important;
        border: 1px solid rgba(255,255,255,.06);
    }

    .service .service-item h4,
    .service .service-item p {
        color: var(--text-light) !important;
    }

    /* PROJECT / INSIGHTS */
    .project {
        background: linear-gradient(180deg, #121a2f, #0b1220) !important;
    }

    .project .project-content {
        background: var(--dark-card) !important;
        color: var(--text-light);
    }

    /* FORMS */
    .form-control {
        background: var(--dark-soft) !important;
        color: #fff !important;
        border: 1px solid rgba(255,255,255,.08);
    }

    .form-control::placeholder {
        color: var(--text-muted);
    }

    /* BUTTONS */
    .btn {
        width: 100%;
        padding: 12px 20px;
        font-size: 0.95rem;
    }

    .btn-primary {
        background: var(--primary-gradient) !important;
        box-shadow: 0 15px 40px rgba(0,212,255,.35);
    }

    /* FOOTER */
    .footer {
        background: #070b16 !important;
        text-align: center;
    }

    .footer a {
        color: #b6c0e6 !important;
    }

    /* BACK TO TOP */
    .back-to-top {
        right: 15px;
        bottom: 15px;
        width: 42px;
        height: 42px;
        box-shadow: 0 10px 30px rgba(0,212,255,.45);
    }
}

/* =====================================================
   SMALL MOBILE (≤576px)
===================================================== */
@media (max-width: 576px) {

    h1, .display-4, .display-5 {
        font-size: 1.6rem !important;
    }

    h2 {
        font-size: 1.4rem;
    }

    p {
        font-size: 0.95rem;
    }

    .card,
    .service-item,
    .project-content {
        border-radius: 14px;
    }
}