:root {
    --blue-dark: #0b2c4d;
    --blue-mid: #123d6b;
    --blue-main: #0d6efd;
    --blue-soft: #e7f1ff;

    --gray-text: #5a5a5a;
    --gray-border: #e9ecef;
}

/* =========================
   GLOBAL
========================= */
body {
    font-family: 'Inter', sans-serif;
    background-color: #ffffff;
    color: var(--gray-text);
    line-height: 1.7;
}

h1, h2, h3, h4, h5 {
    color: var(--blue-dark);
    font-weight: 600;
}

a {
    text-decoration: none;
}

/* =========================
   NAVBAR
========================= */
.navbar {
    background-color: #ffffff;
    border-bottom: 1px solid var(--gray-border);
    padding: 14px 0;
}

.navbar-brand {
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--blue-dark);
    letter-spacing: 0.5px;
}

.brand-highlight {
    font-size: 1.1rem;
    color: #2fbf71;
}

.nav-link {
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--blue-dark) !important;
    margin-left: 14px;
}

.nav-link:hover {
    color: var(--blue-main) !important;
}

/* =========================
   TOGGLE LANGUAGE
========================= */
.lang-toggle {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 0.9rem;
}

.switch {
    position: relative;
    display: inline-block;
    width: 42px;
    height: 22px;
}

.switch input {
    opacity: 0;
    width: 0;
    height: 0;
}

.slider {
    position: absolute;
    cursor: pointer;
    inset: 0;
    background-color: #2fbf71;
    border-radius: 34px;
    transition: 0.3s;
}

.slider:before {
    content: "";
    position: absolute;
    height: 16px;
    width: 16px;
    left: 3px;
    top: 3px;
    background-color: white;
    border-radius: 50%;
    transition: 0.3s;
}

input:checked + .slider {
    background-color: #0d6efd;
}

input:checked + .slider:before {
    transform: translateX(20px);
}

/* =========================
   HERO
========================= */
.hero {
    background: linear-gradient(180deg, var(--blue-dark) 0%, var(--blue-mid) 100%);
    color: #ffffff;
    padding: 110px 0 90px;
    text-align: center;
}

.hero h1 {
    color: #ffffff;
    font-size: 2.4rem;
    font-weight: 700;
    line-height: 1.4;

    /* 🔥 FIX: contrast + premium feel */
    text-shadow: 0 4px 16px rgba(0,0,0,0.45);
    letter-spacing: -0.3px;
}

.hero p {
    color: rgba(255,255,255,0.85);
    max-width: 700px;
    margin: 15px auto 0;
}

/* =========================
   SECTION
========================= */
section {
    padding: 80px 0;
}

.section-title {
    font-size: 1.7rem;
    font-weight: 600;
    color: var(--blue-dark);
    margin-bottom: 40px;
}

/* =========================
   CARD
========================= */
.card-soft {
    background: #ffffff;
    border: 1px solid var(--gray-border);
    border-radius: 14px;
    padding: 26px;
    transition: all 0.25s ease;
    height: 100%;
}

.card-soft:hover {
    transform: translateY(-6px);
    border-color: var(--blue-main);
    box-shadow: 0 10px 25px rgba(13,110,253,0.10);
}

.card-soft h5 {
    color: var(--blue-dark);
    font-weight: 600;
}

/* =========================
   BUTTON
========================= */
.btn {
    border-radius: 30px;
    padding: 10px 24px;
    font-weight: 500;
}

.btn-primary {
    background: var(--blue-main);
    border: none;
}

.btn-primary:hover {
    background: #0b5ed7;
}

.btn-outline-light:hover {
    background: #ffffff;
    color: var(--blue-dark);
}

/* =========================
   CTA
========================= */
.cta {
    background: var(--blue-soft);
    border-radius: 16px;
    padding: 50px;
    text-align: center;
    box-shadow: 0 8px 20px rgba(13,110,253,0.08);
}

.cta h2 {
    color: var(--blue-dark);
    font-weight: 600;
}

/* =========================
   CONTACT
========================= */
.contact-box {
    max-width: 520px;
    margin: 0 auto;
}

/* =========================
   FOOTER
========================= */
footer {
    border-top: 1px solid var(--gray-border);
    padding: 30px 0;
    font-size: 0.85rem;
    color: #777;
}

/* =========================
   RESPONSIVE
========================= */
@media (max-width: 768px) {
    .hero h1 {
        font-size: 1.8rem;
    }

    section {
        padding: 60px 20px;
    }
}

/* =========================
   SLIDE SHOW
========================= */
.tech-carousel {
    position: relative;
    overflow: hidden;
}

.tech-carousel::before,
.tech-carousel::after {
    content: "";
    position: absolute;
    top: 0;
    width: 80px;
    height: 100%;
    z-index: 2;
}

.tech-carousel::before {
    left: 0;
    background: linear-gradient(to right, white, transparent);
}

.tech-carousel::after {
    right: 0;
    background: linear-gradient(to left, white, transparent);
}

.tech-track {
    display: flex;
    gap: 40px;
    width: max-content;
    animation: scrollTech 20s linear infinite;
}

.tech-carousel:hover .tech-track {
    animation-play-state: paused;
}

.tech-item {
    text-align: center;
    min-width: 120px;
}

.tech-item img {
    height: 60px;
}

.tech-item p {
    margin-top: 10px;
    font-size: 0.9rem;
}

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