:root {
    --bg: #f3f5f9;
    --surface: #ffffff;
    --surface-alt: #f8fafc;
    --sidebar: #151922;
    --sidebar-text: #d5d9e2;
    --primary: #c62838;
    --primary-hover: #a91f2d;
    --text: #202534;
    --muted: #737b8d;
    --border: #e5e8ef;
    --success: #15803d;
    --danger: #b42332;
    --radius: 16px;
    --shadow: 0 8px 28px rgba(20, 30, 50, .06);
}

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    background: var(--bg);
    color: var(--text);
    font-family: Inter, "Segoe UI", Arial, sans-serif;
    font-size: 15px;
    line-height: 1.6;
}

a {
    color: var(--primary);
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}

button,
input,
select,
textarea {
    font: inherit;
}

button,
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    min-height: 44px;
    padding: 10px 18px;
    border: 0;
    border-radius: 10px;
    background: var(--primary);
    color: #fff;
    font-weight: 650;
    cursor: pointer;
    transition: background .2s, transform .2s;
}

button:hover,
.btn:hover {
    background: var(--primary-hover);
    color: #fff;
    text-decoration: none;
}

button:active,
.btn:active {
    transform: translateY(1px);
}

.btn-secondary {
    background: #e9edf4;
    color: var(--text);
}

.btn-secondary:hover {
    background: #dce2ed;
    color: var(--text);
}

input,
select,
textarea {
    width: 100%;
    min-height: 46px;
    padding: 11px 13px;
    border: 1px solid #dce1ea;
    border-radius: 10px;
    background: #fff;
    color: var(--text);
    outline: none;
}

textarea {
    min-height: 120px;
    resize: vertical;
}

input:focus,
select:focus,
textarea:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(198, 40, 56, .10);
}

label {
    display: block;
    margin-bottom: 6px;
    font-weight: 650;
}

.form-group {
    margin-bottom: 18px;
}

.form-help {
    display: block;
    margin-top: 5px;
    color: var(--muted);
    font-size: 13px;
}

.container {
    width: min(1180px, calc(100% - 36px));
    margin: 0 auto;
}

.topbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
    padding: 18px 0;
}

.brand {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    color: var(--text);
    font-size: 23px;
    font-weight: 800;
    letter-spacing: -.6px;
}

.brand-mark {
    display: grid;
    width: 42px;
    height: 42px;
    place-items: center;
    border-radius: 13px;
    background: var(--primary);
    color: #fff;
    font-size: 21px;
    font-weight: 800;
}

.hero {
    display: grid;
    grid-template-columns: 1.3fr .7fr;
    align-items: center;
    gap: 36px;
    padding: 64px 0;
}

.hero h1 {
    max-width: 700px;
    margin: 0 0 18px;
    font-size: clamp(36px, 5vw, 58px);
    line-height: 1.1;
    letter-spacing: -1.8px;
}

.hero p {
    max-width: 620px;
    color: var(--muted);
    font-size: 17px;
}

.hero-panel {
    padding: 30px;
    border: 1px solid var(--border);
    border-radius: 24px;
    background: var(--surface);
    box-shadow: var(--shadow);
}

.section {
    padding: 28px 0 48px;
}

.section-heading {
    margin-bottom: 22px;
}

.section-heading h2 {
    margin: 0 0 6px;
    font-size: 27px;
}

.section-heading p {
    margin: 0;
    color: var(--muted);
}

.grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 20px;
}

.card {
    padding: 24px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background: var(--surface);
    box-shadow: var(--shadow);
}

.card h2,
.card h3 {
    margin-top: 0;
}

.card p {
    color: var(--muted);
}

.card-icon {
    display: grid;
    width: 48px;
    height: 48px;
    margin-bottom: 18px;
    place-items: center;
    border-radius: 14px;
    background: #fff0f1;
    color: var(--primary);
    font-size: 22px;
}

.auth-page {
    display: grid;
    min-height: 100vh;
    padding: 24px;
    place-items: center;
    background:
        radial-gradient(ellipse at top left, #ffe7e9 0, transparent 45%),
        var(--bg);
}

.auth-card {
    width: min(460px, 100%);
    padding: 36px;
    border: 1px solid var(--border);
    border-radius: 22px;
    background: var(--surface);
    box-shadow: 0 18px 55px rgba(20, 30, 50, .09);
}

.auth-card h1 {
    margin: 22px 0 4px;
    font-size: 29px;
}

.auth-card > p {
    margin-top: 0;
    margin-bottom: 26px;
    color: var(--muted);
}

.alert {
    margin-bottom: 18px;
    padding: 13px 15px;
    border: 1px solid #fecdd3;
    border-radius: 10px;
    background: #fff1f2;
    color: #9f1239;
}

.alert-success {
    border-color: #bbf7d0;
    background: #f0fdf4;
    color: #166534;
}

.app-layout {
    display: grid;
    min-height: 100vh;
    grid-template-columns: 250px minmax(0, 1fr);
}

.sidebar {
    padding: 25px 17px;
    background: var(--sidebar);
    color: #fff;
}

.sidebar .brand {
    margin: 0 10px 34px;
    color: #fff;
}

.sidebar nav {
    display: grid;
    gap: 6px;
}

.sidebar nav a {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 14px;
    border-radius: 10px;
    color: var(--sidebar-text);
}

.sidebar nav a:hover,
.sidebar nav a.active {
    background: rgba(255, 255, 255, .10);
    color: #fff;
    text-decoration: none;
}

.main-content {
    min-width: 0;
    padding: 28px;
}

.page-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 16px;
    margin-bottom: 26px;
}

.page-header h1 {
    margin: 0;
    font-size: 30px;
}

.muted {
    color: var(--muted);
}

.table-wrap {
    overflow-x: auto;
    border: 1px solid var(--border);
    border-radius: 14px;
    background: #fff;
}

table {
    width: 100%;
    border-collapse: collapse;
    text-align: left;
}

th,
td {
    padding: 14px 16px;
    border-bottom: 1px solid var(--border);
    white-space: normal;
}

th {
    background: var(--surface-alt);
    font-size: 13px;
    font-weight: 750;
}

tr:last-child td {
    border-bottom: 0;
}

.badge {
    display: inline-block;
    padding: 4px 9px;
    border-radius: 999px;
    background: #edf0f5;
    color: #394150;
    font-size: 12px;
    font-weight: 700;
}

.footer {
    padding: 30px 0;
    border-top: 1px solid var(--border);
    color: var(--muted);
    text-align: center;
}

@media (max-width: 900px) {
    .hero {
        grid-template-columns: 1fr;
        padding: 40px 0;
    }

    .grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

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

    .sidebar {
        padding: 15px;
    }

    .sidebar .brand {
        margin-bottom: 15px;
    }

    .sidebar nav {
        display: flex;
        overflow-x: auto;
    }

    .sidebar nav a {
        flex-shrink: 0;
    }

    .main-content {
        padding: 20px;
    }
}

@media (max-width: 560px) {
    .container {
        width: calc(100% - 24px);
    }

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

    .hero h1 {
        font-size: 37px;
    }

    .auth-page {
        padding: 12px;
    }

    .auth-card {
        padding: 24px;
    }

    .main-content {
        padding: 14px;
    }

    .page-header h1 {
        font-size: 25px;
    }
}