/* =========================
   BASE
========================= */
body {
    margin: 0;
    font-family: 'Inter', sans-serif;
    background: #f5f6f8;
    color: #1a1a1a;

    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* =========================
   NAVBAR
========================= */
.navbar {
    height: 60px;
    background: #ffffff;
    border-bottom: 1px solid #e5e7eb;

    display: flex;
    align-items: center;
    justify-content: space-between;

    padding: 0 24px;

    position: sticky;
    top: 0;
    z-index: 100;
}

/* LEFT */
.nav-left {
    display: flex;
    align-items: center;
    gap: 16px;
}

/* LOGO */
.logo {
    width: 36px;
    height: 36px;

    background: linear-gradient(135deg, #0a2a66, #2563eb);

    color: white;
    font-weight: 600;
    font-size: 14px;

    display: flex;
    align-items: center;
    justify-content: center;

    border-radius: 8px;

    flex-shrink: 0;
}

/* SYSTEM NAME */
.system-name {
    font-size: 16px;
    font-weight: 600;
    white-space: nowrap;
}

/* RIGHT */
.nav-right {
    display: flex;
    align-items: center;
    gap: 18px;
}

/* NAV LINKS */
.nav-link {
    text-decoration: none;

    color: #374151;

    font-size: 14px;
    font-weight: 500;

    padding: 8px 12px;
    border-radius: 6px;

    transition: all 0.2s ease;
}

.nav-link:hover {
    background: #eff6ff;
    color: #2563eb;
}

/* DATE */
.date-box {
    font-size: 13px;
    color: #6b7280;
    white-space: nowrap;
}

/* =========================
   WRAPPER
========================= */
.wrapper {
    max-width: 1100px;
    margin: 0 auto;
}

/* =========================
   SECTION
========================= */
.section {
    padding: 30px 20px;
}

.section h2 {
    font-size: 24px;
    font-weight: 600;
    margin: 0 0 18px;
}

/* =========================
   GRID
========================= */
.grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}

/* PLACEHOLDER */
.placeholder {
    visibility: hidden;
}

/* =========================
   CARD
========================= */
.card {
    background: #ffffff;
    border-radius: 10px;
    overflow: hidden;

    text-decoration: none;
    color: inherit;

    border: 1px solid #e5e7eb;

    transition:
        transform 0.2s ease,
        box-shadow 0.2s ease,
        border-color 0.2s ease;

    display: block;
}

.card:hover {
    transform: translateY(-4px);

    box-shadow:
        0 10px 25px rgba(0,0,0,0.08);

    border-color: #3b82f6;
}

.card:hover .content h3 {
    color: #2563eb;
}

/* IMAGE */
.card img {
    width: 100%;
    height: 160px;

    object-fit: cover;

    display: block;
}

/* CONTENT */
.content {
    padding: 16px;
}

.content h3 {
    margin: 0 0 6px;

    font-size: 15px;
    font-weight: 600;

    transition: color 0.2s ease;
}

.content p {
    margin: 0;

    font-size: 13px;
    color: #555;

    line-height: 1.5;
}

/* =========================
   TABLET
========================= */
@media (max-width: 900px) {

    .grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .placeholder {
        display: none;
    }

    .navbar {
        padding: 0 20px;
    }

    .nav-right {
        gap: 10px;
    }
}

/* =========================
   MOBILE
========================= */
@media (max-width: 600px) {

    .grid {
        grid-template-columns: 1fr;
    }

    .navbar {
        flex-direction: column;
        justify-content: center;

        height: auto;

        padding: 15px;

        gap: 15px;
    }

    .nav-left {
        flex-direction: column;
        text-align: center;
    }

    .nav-right {
        flex-wrap: wrap;
        justify-content: center;
    }

    .system-name {
        text-align: center;
    }

    .date-box {
        text-align: center;
    }
}