:root {
    --orange: #F26A21;
    --orange-dark: #D4550F;
    --navy: #1C1C2A;
    --gray-900: #1f2430;
    --gray-700: #4a4f5c;
    --gray-200: #e9e9ee;
    --gray-100: #f6f6f8;
    --white: #ffffff;
    --radius: 8px;
    --shadow: 0 4px 16px rgba(0,0,0,0.08);
}

* { box-sizing: border-box; }

body {
    margin: 0;
    font-family: "Segoe UI", Arial, Helvetica, sans-serif;
    color: var(--gray-900);
    background: var(--white);
    line-height: 1.6;
}

.container {
    max-width: 1140px;
    margin: 0 auto;
    padding: 0 20px;
}

a { color: var(--orange-dark); text-decoration: none; }
a:hover { text-decoration: underline; }

h1, h2, h3, h4 { color: var(--navy); line-height: 1.25; }

/* ---------- Header ---------- */
.topbar {
    background: var(--navy);
    color: var(--gray-200);
    font-size: 0.8rem;
}
.topbar-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 6px 20px;
    flex-wrap: wrap;
    gap: 6px;
}

.navbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 14px 20px;
    border-bottom: 3px solid var(--orange);
}

.brand {
    display: flex;
    flex-direction: column;
    line-height: 1.1;
}
.brand-mua {
    font-weight: 800;
    font-size: 1.6rem;
    color: var(--orange);
    letter-spacing: 1px;
}
.brand-sub {
    font-size: 0.75rem;
    color: var(--gray-700);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}
.brand:hover { text-decoration: none; }

.nav-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 1.6rem;
    cursor: pointer;
    color: var(--navy);
}

.main-nav {
    display: flex;
    flex-wrap: wrap;
    gap: 4px;
    justify-content: flex-end;
}
.main-nav a {
    color: var(--navy);
    font-size: 0.88rem;
    font-weight: 600;
    padding: 8px 10px;
    border-radius: var(--radius);
}
.main-nav a:hover,
.main-nav a.active {
    background: var(--orange);
    color: var(--white);
    text-decoration: none;
}

/* ---------- Hero ---------- */
.hero {
    background: linear-gradient(120deg, var(--navy) 0%, #2c2c40 100%);
    color: var(--white);
    padding: 70px 0;
    position: relative;
    overflow: hidden;
}
.hero::after {
    content: "";
    position: absolute;
    right: -80px;
    bottom: -80px;
    width: 320px;
    height: 320px;
    background: var(--orange);
    opacity: 0.15;
    border-radius: 50%;
}
.hero h1 {
    color: var(--white);
    font-size: 2.4rem;
    margin-bottom: 12px;
}
.hero p {
    max-width: 640px;
    font-size: 1.05rem;
    color: var(--gray-200);
}
.btn {
    display: inline-block;
    background: var(--orange);
    color: var(--white);
    padding: 12px 24px;
    border-radius: var(--radius);
    font-weight: 700;
    margin-top: 18px;
    border: none;
    cursor: pointer;
    font-size: 0.95rem;
}
.btn:hover { background: var(--orange-dark); text-decoration: none; }
.btn-outline {
    background: transparent;
    border: 2px solid var(--white);
    color: var(--white);
}
.btn-outline:hover { background: var(--white); color: var(--navy); }

/* ---------- Sections ---------- */
section { padding: 55px 0; }
.section-alt { background: var(--gray-100); }

.section-title {
    text-align: center;
    margin-bottom: 40px;
}
.section-title h2 { font-size: 1.9rem; }
.section-title p { color: var(--gray-700); max-width: 650px; margin: 8px auto 0; }

.grid {
    display: grid;
    gap: 24px;
}
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-2 { grid-template-columns: repeat(2, 1fr); }

.card {
    background: var(--white);
    border: 1px solid var(--gray-200);
    border-radius: var(--radius);
    padding: 24px;
    box-shadow: var(--shadow);
}
.card h3 {
    font-size: 1.1rem;
    margin-top: 0;
    color: var(--orange-dark);
}
.card ul { margin: 0; padding-left: 20px; }
.card ul li { margin-bottom: 6px; }

.icon-badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 46px;
    height: 46px;
    border-radius: 50%;
    background: var(--orange);
    color: var(--white);
    font-size: 1.3rem;
    margin-bottom: 12px;
}

/* ---------- Lists / content pages ---------- */
.content-block { max-width: 860px; margin: 0 auto; }
.content-block h2 { border-left: 4px solid var(--orange); padding-left: 12px; margin-top: 34px; }
.content-block ul { padding-left: 22px; }

.doc-list { list-style: none; padding: 0; margin: 0; }
.doc-list li {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 16px;
    padding: 14px 18px;
    border: 1px solid var(--gray-200);
    border-radius: var(--radius);
    margin-bottom: 12px;
    flex-wrap: wrap;
}
.doc-list .doc-title { font-weight: 700; color: var(--navy); }
.doc-list .doc-desc { font-size: 0.85rem; color: var(--gray-700); }
.doc-actions { display: flex; gap: 10px; flex-shrink: 0; }
.doc-actions .btn, .doc-actions .btn-outline { margin-top: 0; padding: 10px 18px; font-size: 0.88rem; }
.doc-tag {
    font-size: 0.7rem;
    text-transform: uppercase;
    background: var(--gray-200);
    padding: 3px 8px;
    border-radius: 20px;
    margin-right: 10px;
}

.news-item {
    border-bottom: 1px solid var(--gray-200);
    padding: 20px 0;
}
.news-item .news-date {
    font-size: 0.8rem;
    color: var(--orange-dark);
    font-weight: 700;
    text-transform: uppercase;
}

/* ---------- Forms ---------- */
form.stack { max-width: 640px; margin: 0 auto; }
.form-group { margin-bottom: 18px; }
.form-group label { display: block; font-weight: 600; margin-bottom: 6px; }
.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 10px 12px;
    border: 1px solid var(--gray-200);
    border-radius: var(--radius);
    font-size: 0.95rem;
    font-family: inherit;
}
.form-group textarea { resize: vertical; min-height: 120px; }

.alert {
    padding: 14px 18px;
    border-radius: var(--radius);
    margin-bottom: 20px;
    font-size: 0.92rem;
}
.alert-success { background: #e6f6ec; color: #1c7d40; border: 1px solid #b6e6c6; }
.alert-error   { background: #fdecea; color: #b3261e; border: 1px solid #f7c4bf; }

/* ---------- Footer ---------- */
.site-footer {
    background: var(--navy);
    color: var(--gray-200);
    margin-top: 40px;
}
.footer-inner {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    padding: 40px 20px;
}
.footer-col h4 { color: var(--orange); margin-bottom: 10px; }
.footer-col a { color: var(--gray-200); }
.footer-bottom {
    text-align: center;
    font-size: 0.8rem;
    padding: 14px 0;
    border-top: 1px solid rgba(255,255,255,0.1);
    color: var(--gray-200);
}

/* ---------- Responsive ---------- */
@media (max-width: 860px) {
    .grid-3, .grid-2, .footer-inner { grid-template-columns: 1fr; }
    .nav-toggle { display: block; }
    .main-nav {
        display: none;
        flex-direction: column;
        width: 100%;
        padding-top: 10px;
    }
    .main-nav.open { display: flex; }
    .navbar { flex-wrap: wrap; }
}