/* ================================================
   PT Bumilang Tanjung Nusantara — Custom CSS
   ================================================ */

:root {
    --ink: #0b1f3a;
    --teal: #20b8a6;
    --teal-deep: #087d78;
    --gold: #d6a23a;
    --paper: #f6f3eb;
    --muted: #617087;
}

body {
    background: var(--paper);
    color: var(--ink);
    font-family: 'Inter', sans-serif;
    line-height: 1.65;
}

h1, h2, h3, h4, h5, h6 {
    font-family: 'Poppins', sans-serif;
    font-weight: 700;
}

a { color: var(--teal-deep); text-decoration: none; }
a:hover { color: var(--teal); }

/* ===== NAVBAR ===== */
.site-nav {
    background: var(--ink);
    padding: 0.5rem 0;
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: 0 2px 12px rgba(0,0,0,0.08);
}
.navbar-logo {
    height: 55px;
    width: auto;
}
.site-nav .nav-link {
    color: rgba(255,255,255,0.8) !important;
    font-weight: 600;
    font-size: 0.92rem;
    padding: 0.6rem 0.9rem !important;
    transition: color 0.2s;
}
.site-nav .nav-link:hover,
.site-nav .nav-link.active {
    color: var(--teal) !important;
}
.site-nav .navbar-toggler {
    border-color: rgba(255,255,255,0.3);
}
.site-nav .navbar-toggler-icon {
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='%23ffffff' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
}

/* ===== BUTTONS ===== */
.btn-brand {
    background: var(--teal);
    color: white;
    border: none;
    padding: 0.7rem 1.5rem;
    border-radius: 999px;
    font-weight: 700;
    transition: all 0.2s;
}
.btn-brand:hover {
    background: var(--teal-deep);
    color: white;
    transform: translateY(-2px);
}
.btn-outline-brand {
    background: transparent;
    color: var(--ink);
    border: 2px solid var(--ink);
    padding: 0.7rem 1.5rem;
    border-radius: 999px;
    font-weight: 700;
    transition: all 0.2s;
}
.btn-outline-brand:hover {
    background: var(--ink);
    color: white;
    transform: translateY(-2px);
}

/* ===== FOOTER ===== */
.footer {
    background: var(--ink);
    color: rgba(255,255,255,0.75);
    padding: 3rem 0 1rem;
    margin-top: 4rem;
}
.footer a {
    color: rgba(255,255,255,0.75);
    font-size: 0.92rem;
}
.footer a:hover {
    color: var(--teal);
}
.footer h6 {
    color: white;
    font-weight: 800;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    font-size: 0.82rem;
    margin-bottom: 1rem;
}
.footer-logo {
    max-width: 140px;
    background: white;
    padding: 8px;
    border-radius: 12px;
    margin-bottom: 1rem;
}
.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.15);
    margin-top: 2rem;
    padding-top: 1rem;
    font-size: 0.85rem;
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 0.5rem;
}

/* ===== WHATSAPP FLOAT ===== */
.whatsapp-float {
    position: fixed;
    bottom: 24px;
    right: 24px;
    width: 56px;
    height: 56px;
    background: #25d366;
    color: white !important;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.6rem;
    box-shadow: 0 6px 20px rgba(37,211,102,0.4);
    z-index: 1000;
    transition: transform 0.2s;
}
.whatsapp-float:hover {
    transform: scale(1.1);
}

/* ===== SECTION ===== */
.section {
    padding: 3.5rem 0;
}
.section-title {
    font-size: clamp(1.5rem, 3vw, 2.2rem);
    font-weight: 800;
    letter-spacing: -0.02em;
}
.section-kicker {
    color: var(--gold);
    font-size: 0.78rem;
    font-weight: 800;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    margin-bottom: 0.6rem;
}

/* ===== CARD ===== */
.card-custom {
    background: white;
    border: 1px solid rgba(11,31,58,0.08);
    border-radius: 1rem;
    padding: 1.5rem;
    height: 100%;
    transition: all 0.2s;
}
.card-custom:hover {
    box-shadow: 0 12px 30px rgba(11,31,58,0.1);
    transform: translateY(-4px);
}

/* ===== FORM ===== */
.form-control, .form-select {
    border: 1px solid rgba(11,31,58,0.15);
    border-radius: 0.6rem;
    padding: 0.7rem 1rem;
}
.form-control:focus {
    border-color: var(--teal);
    box-shadow: 0 0 0 0.2rem rgba(32,184,166,0.15);
}
.form-label {
    font-weight: 600;
    font-size: 0.9rem;
    color: var(--ink);
}

/* ===== RESPONSIVE ===== */
@media (max-width: 991px) {
    .site-nav .navbar-collapse {
        padding-top: 1rem;
        border-top: 1px solid rgba(255,255,255,0.1);
        margin-top: 0.5rem;
    }
    .footer-bottom {
        flex-direction: column;
        text-align: center;
    }
}