:root {
    --bs-main: #223f7a;
    --bs-main-dark: #1a3061;
    --bs-secondary: #cca256;
    --bs-secondary-dark: #b88c3e;
    --bs-bg: #f3f5f9;
    --bs-text: #1f2a44;
    --bs-muted: #6b7689;
    --bs-border: #e3e8f0;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

body {
    font-family: 'DM Sans', 'Segoe UI', system-ui, sans-serif;
    background: var(--bs-bg);
    min-height: 100vh;
    color: var(--bs-text);
}

a { color: var(--bs-main); }

/* ---------- Platform header / top nav ---------- */
.platform-header {
    background: linear-gradient(95deg, var(--bs-main) 0%, var(--bs-main-dark) 100%);
    color: #fff;
    padding: 0 1.5rem;
    height: 64px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    box-shadow: 0 2px 14px rgba(34, 63, 122, 0.25);
    position: sticky;
    top: 0;
    z-index: 50;
}
.platform-brand {
    display: flex;
    align-items: center;
    gap: 0.7rem;
    color: #fff;
    text-decoration: none;
    font-weight: 700;
    font-size: 1.25rem;
    letter-spacing: -0.01em;
}
.platform-brand img {
    height: 38px;
    width: auto;
    background: #fff;
    border-radius: 8px;
    padding: 3px 5px;
}
.platform-brand .brand-accent { color: var(--bs-secondary); }

.platform-nav { display: flex; align-items: center; gap: 0.25rem; }
.platform-nav a {
    padding: 0.5rem 1.1rem;
    border-radius: 8px;
    color: rgba(255, 255, 255, 0.82);
    text-decoration: none;
    font-weight: 600;
    font-size: 0.95rem;
    transition: background 0.2s, color 0.2s;
}
.platform-nav a:hover { color: #fff; background: rgba(255, 255, 255, 0.12); }
.platform-nav a.active {
    color: var(--bs-main);
    background: #fff;
}
.platform-nav .logout-form { margin-left: 0.5rem; }
.platform-nav .logout-form button {
    padding: 0.45rem 0.9rem;
    border-radius: 8px;
    border: 1px solid rgba(255, 255, 255, 0.35);
    background: transparent;
    color: rgba(255, 255, 255, 0.85);
    font: inherit;
    font-weight: 600;
    font-size: 0.9rem;
    cursor: pointer;
}
.platform-nav .logout-form button:hover { color: #fff; background: rgba(255, 255, 255, 0.12); }

/* ---------- Login ---------- */
.login-page {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1.5rem;
    background: linear-gradient(140deg, var(--bs-main) 0%, var(--bs-main-dark) 100%);
}
.login-card {
    background: #fff;
    width: 100%;
    max-width: 380px;
    padding: 2rem 2rem 2.25rem;
    border-radius: 14px;
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.25);
    display: flex;
    flex-direction: column;
}
.login-logo { height: 52px; width: auto; align-self: center; margin-bottom: 0.75rem; }
.login-card h1 { text-align: center; color: var(--bs-main); font-size: 1.5rem; }
.login-card .brand-accent { color: var(--bs-secondary); }
.login-hint { text-align: center; color: var(--bs-muted); margin: 0.25rem 0 1.25rem; }
.login-card label { font-weight: 600; font-size: 0.9rem; margin-bottom: 0.35rem; }
.login-card input {
    padding: 0.65rem 0.9rem;
    border: 1px solid var(--bs-border);
    border-radius: 8px;
    font: inherit;
    margin-bottom: 1rem;
}
.login-card input:focus { outline: none; border-color: var(--bs-main); box-shadow: 0 0 0 3px rgba(34, 63, 122, 0.15); }
.login-card button {
    margin-top: 0.5rem;
    padding: 0.75rem;
    border: none;
    border-radius: 8px;
    background: var(--bs-main);
    color: #fff;
    font: inherit;
    font-weight: 700;
    cursor: pointer;
}
.login-card button:hover { background: var(--bs-main-dark); }
.login-error {
    background: #fee2e2;
    border: 1px solid #dc2626;
    color: #991b1b;
    padding: 0.6rem 0.8rem;
    border-radius: 8px;
    margin-bottom: 1rem;
    font-size: 0.9rem;
}

/* ---------- Sub navigation (per-service tabs) ---------- */
.subnav {
    background: #fff;
    border-bottom: 1px solid var(--bs-border);
    padding: 0 1.5rem;
    display: flex;
    align-items: center;
    gap: 0.25rem;
    overflow-x: auto;
}
.subnav .subnav-label {
    font-weight: 700;
    color: var(--bs-main);
    margin-right: 1rem;
    white-space: nowrap;
}
.subnav a {
    padding: 0.9rem 1rem;
    color: var(--bs-muted);
    text-decoration: none;
    font-weight: 600;
    font-size: 0.92rem;
    border-bottom: 3px solid transparent;
    white-space: nowrap;
    transition: color 0.2s, border-color 0.2s;
}
.subnav a:hover { color: var(--bs-main); }
.subnav a.active { color: var(--bs-main); border-bottom-color: var(--bs-secondary); }

/* ---------- Generic page shell ---------- */
.platform-main {
    max-width: 980px;
    margin: 0 auto;
    padding: 1.75rem 1.5rem 3rem;
}
.page-title {
    font-size: 1.75rem;
    font-weight: 700;
    margin-bottom: 0.35rem;
    color: var(--bs-main);
}
.page-subtitle {
    color: var(--bs-muted);
    font-size: 1rem;
    margin-bottom: 1.5rem;
}

/* ---------- Dashboard ---------- */
.hero {
    background: linear-gradient(110deg, var(--bs-main) 0%, var(--bs-main-dark) 60%, #16264d 100%);
    color: #fff;
    border-radius: 18px;
    padding: 2.5rem 2rem;
    margin-bottom: 2rem;
    position: relative;
    overflow: hidden;
}
.hero::after {
    content: "";
    position: absolute;
    right: -60px;
    bottom: -80px;
    width: 280px;
    height: 280px;
    background: radial-gradient(circle, rgba(204, 162, 86, 0.35) 0%, transparent 70%);
}
.hero h1 { font-size: 2.1rem; font-weight: 700; margin-bottom: 0.5rem; }
.hero h1 .brand-accent { color: var(--bs-secondary); }
.hero p { font-size: 1.05rem; opacity: 0.9; max-width: 540px; }

.service-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
}
.service-card {
    background: #fff;
    border: 1px solid var(--bs-border);
    border-radius: 16px;
    padding: 1.6rem 1.6rem 1.4rem;
    text-decoration: none;
    color: inherit;
    display: flex;
    flex-direction: column;
    box-shadow: 0 1px 3px rgba(31, 42, 68, 0.06);
    transition: transform 0.2s, box-shadow 0.2s, border-color 0.2s;
    border-top: 4px solid var(--accent, var(--bs-main));
}
.service-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 30px rgba(31, 42, 68, 0.14);
    border-color: var(--accent, var(--bs-main));
}
.service-card .icon {
    font-size: 2rem;
    width: 58px;
    height: 58px;
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(34, 63, 122, 0.08);
    margin-bottom: 1rem;
}
.service-card h3 { font-size: 1.25rem; color: var(--bs-main); margin-bottom: 0.35rem; }
.service-card .tagline { color: var(--bs-muted); font-size: 0.95rem; margin-bottom: 1rem; }
.service-card ul { list-style: none; margin-bottom: 1.2rem; }
.service-card li {
    color: var(--bs-text);
    font-size: 0.9rem;
    padding: 0.28rem 0 0.28rem 1.4rem;
    position: relative;
}
.service-card li::before {
    content: "✓";
    position: absolute;
    left: 0;
    color: var(--bs-secondary);
    font-weight: 700;
}
.service-card .open-btn {
    margin-top: auto;
    align-self: flex-start;
    background: var(--bs-main);
    color: #fff;
    padding: 0.6rem 1.4rem;
    border-radius: 9px;
    font-weight: 600;
    font-size: 0.95rem;
}
.service-card:hover .open-btn { background: var(--bs-secondary-dark); }

.platform-footer {
    text-align: center;
    color: var(--bs-muted);
    font-size: 0.85rem;
    padding: 1.5rem;
}

@media (max-width: 640px) {
    .platform-brand span.brand-text { display: none; }
    .hero { padding: 2rem 1.5rem; }
    .hero h1 { font-size: 1.7rem; }
}