:root {
    --navy: #0b1f3a;
    --navy-2: #123056;
    --blue: #1a56a8;
    --ink: #1c2430;
    --muted: #5c6b7a;
    --line: #d8e0e8;
    --page: #eef2f6;
    --surface: #fff;
    --ok: #1a7a4c;
    --bad: #b42318;
    --font: "IBM Plex Sans", "Segoe UI", system-ui, sans-serif;
}

* { box-sizing: border-box; }
html, body { height: 100%; margin: 0; font-family: var(--font); color: var(--ink); background: var(--page); overflow-x: hidden; }
.d-none { display: none !important; }
.muted { color: var(--muted); font-size: .82rem; }

.login-screen {
    min-height: 100%;
    display: grid;
    place-items: center;
    padding: 24px;
    background: linear-gradient(160deg, var(--navy), var(--navy-2));
}
.login-card {
    width: min(420px, 100%);
    background: #fff;
    border-radius: 12px;
    padding: 32px 28px;
    box-shadow: 0 24px 60px rgba(0,0,0,.28);
}
.login-mark {
    width: 48px; height: 48px; border-radius: 8px;
    background: var(--navy); color: #fff;
    display: grid; place-items: center; font-size: 1.2rem; margin-bottom: 14px;
}
.login-card h1 { margin: 0 0 6px; font-size: 1.35rem; }
.login-card p { margin: 0 0 20px; color: var(--muted); }
.login-card label, .panel label { display: block; font-size: .78rem; font-weight: 600; margin: 10px 0 4px; }
.login-card input, .panel input, .panel select, .inline-form input, .inline-form select {
    width: 100%;
    border: 1px solid var(--line);
    border-radius: 6px;
    padding: 10px 12px;
    font: inherit;
    font-size: 16px;
}
.login-card button, .btn-save {
    margin-top: 16px;
    width: 100%;
    border: 0;
    background: var(--navy);
    color: #fff;
    font: inherit;
    font-weight: 600;
    padding: 11px 16px;
    border-radius: 6px;
    cursor: pointer;
}
.btn-save.sm { width: auto; margin-top: 0; padding: 9px 14px; }
.login-card small { display: block; margin-top: 14px; color: var(--muted); }
.alert { margin-top: 10px; padding: 8px 10px; border-radius: 6px; background: #fde8e8; color: var(--bad); font-size: .85rem; }

.app { display: grid; grid-template-columns: 240px 1fr; min-height: 100%; }
.sidebar {
    background: var(--navy);
    color: #d7e4f5;
    display: flex;
    flex-direction: column;
    padding: 18px 12px;
}
.side-brand { display: flex; gap: 10px; align-items: center; padding: 6px 8px 18px; }
.side-brand img, .side-fallback {
    width: 40px; height: 40px; border-radius: 6px; object-fit: contain; background: #fff;
}
.side-fallback { display: grid; place-items: center; background: var(--blue); color: #fff; }
.side-brand strong { display: block; color: #fff; font-size: .92rem; }
.side-brand span { font-size: .72rem; opacity: .75; }
.sidebar nav { display: flex; flex-direction: column; gap: 4px; flex: 1; }
.nav-btn {
    border: 0; background: transparent; color: inherit;
    text-align: left; padding: 10px 12px; border-radius: 6px;
    font: inherit; cursor: pointer;
}
.nav-btn i { width: 18px; margin-right: 8px; }
.nav-btn:hover, .nav-btn.active { background: rgba(255,255,255,.1); color: #fff; }
.side-foot { display: flex; flex-direction: column; gap: 8px; padding-top: 12px; border-top: 1px solid rgba(255,255,255,.12); }
.side-foot a, .side-foot button {
    color: #d7e4f5; background: none; border: 0; text-align: left;
    font: inherit; cursor: pointer; text-decoration: none; padding: 6px 8px;
}

.main { padding: 22px 28px 40px; overflow: auto; }
.top { margin-bottom: 16px; }
.top h2 { margin: 0; font-size: 1.25rem; }
.view { display: none; }
.view.active { display: block; }

.panel {
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: 10px;
    padding: 18px 20px 22px;
}
.panel h3 { margin: 0 0 12px; font-size: 1rem; color: var(--navy); }
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 8px 16px; }
.span-2 { grid-column: 1 / -1; }
.narrow { max-width: 420px; }

.stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; margin-bottom: 16px; }
.stat { background: #fff; border: 1px solid var(--line); border-radius: 10px; padding: 16px; }
.stat span { display: block; font-size: .75rem; color: var(--muted); text-transform: uppercase; letter-spacing: .04em; }
.stat strong { font-size: 1.4rem; }

table.data { width: 100%; border-collapse: collapse; font-size: .86rem; }
table.data th, table.data td { border-bottom: 1px solid var(--line); padding: 8px 6px; text-align: left; }
table.data th { font-size: .72rem; color: var(--muted); text-transform: uppercase; letter-spacing: .03em; }
table.data input { padding: 6px 8px; }

.logo-box {
    width: 140px; height: 80px; border: 1px dashed var(--line); border-radius: 8px;
    display: grid; place-items: center; background: #f7fafc; margin-bottom: 8px; overflow: hidden;
}
.logo-box img { max-width: 100%; max-height: 100%; object-fit: contain; }
.brand-media input[type="color"] { height: 38px; padding: 2px; }

.tabs { display: flex; gap: 8px; margin-bottom: 14px; }
.tab { border: 1px solid var(--line); background: #fff; border-radius: 6px; padding: 7px 12px; cursor: pointer; font: inherit; }
.tab.on { background: var(--navy); color: #fff; border-color: var(--navy); }

.inline-form { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 16px; align-items: center; }
.inline-form input, .inline-form select { width: auto; min-width: 120px; }

.btn-del { border: 0; background: #fde8e8; color: var(--bad); border-radius: 4px; padding: 4px 8px; cursor: pointer; font: inherit; font-size: .78rem; }

.toast {
    position: fixed; right: 18px; bottom: 18px; background: var(--navy); color: #fff;
    padding: 10px 14px; border-radius: 8px; transform: translateY(80px); opacity: 0;
    transition: .25s ease; z-index: 20; font-size: .88rem;
}
.toast.show { transform: none; opacity: 1; }
.toast.ok { background: var(--ok); }
.toast.bad { background: var(--bad); }

@media (max-width: 900px) {
    .app { grid-template-columns: 1fr; }
    .sidebar {
        flex-direction: row;
        flex-wrap: wrap;
        align-items: center;
        padding: 12px;
        gap: 8px;
    }
    .side-brand { flex: 1 1 100%; padding-bottom: 8px; }
    .sidebar nav {
        flex-direction: row;
        flex-wrap: wrap;
        flex: 1 1 100%;
        gap: 6px;
    }
    .nav-btn {
        flex: 1 1 calc(50% - 6px);
        font-size: .82rem;
        padding: 10px;
        min-height: 44px;
    }
    .side-foot {
        flex: 1 1 100%;
        flex-direction: row;
        flex-wrap: wrap;
        gap: 8px;
    }
    .stats, .grid-2 { grid-template-columns: 1fr; }
    .main { padding: 14px 12px 28px; }
    .inline-form { flex-direction: column; align-items: stretch; }
    .inline-form input, .inline-form select { width: 100%; min-width: 0; }
    table.data { display: block; overflow-x: auto; -webkit-overflow-scrolling: touch; }
}