* {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
    background: linear-gradient(180deg, #f4fbfb 0%, #f7f2ea 100%);
    color: #18313b;
}

a {
    color: inherit;
}

.layout {
    max-width: 1200px;
    margin: 0 auto;
    padding: 24px;
}

.hero {
    display: grid;
    grid-template-columns: 1.3fr 0.9fr;
    gap: 20px;
    margin-bottom: 24px;
}

.hero-card,
.panel,
.list-card,
.auth-card {
    background: rgba(255, 255, 255, 0.9);
    border: 1px solid rgba(24, 49, 59, 0.08);
    border-radius: 24px;
    box-shadow: 0 16px 40px rgba(19, 48, 60, 0.08);
}

.hero-card {
    padding: 28px;
    min-height: 260px;
    background: radial-gradient(circle at top right, rgba(34, 197, 94, 0.2), transparent 30%), linear-gradient(135deg, #0f766e, #164e63);
    color: #f4fffe;
}

.hero-card h1 {
    margin: 0 0 12px;
    font-size: 40px;
    line-height: 1.1;
}

.hero-card p {
    margin: 0 0 16px;
    color: rgba(255, 255, 255, 0.86);
    line-height: 1.6;
}

.hero-pills {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.hero-pills span,
.tag {
    display: inline-flex;
    align-items: center;
    padding: 8px 14px;
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.16);
    color: #fff;
    font-size: 13px;
}

.auth-card {
    padding: 22px;
}

.auth-card h2,
.panel h2,
.list-card h2 {
    margin: 0 0 16px;
    font-size: 22px;
}

.muted {
    color: #617781;
}

.grid {
    display: grid;
    gap: 20px;
}

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

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

.panel {
    padding: 22px;
}

.section-title {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    margin-bottom: 16px;
}

.stats {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 12px;
}

.stat {
    padding: 16px;
    border-radius: 18px;
    background: #eef7f7;
}

.stat strong {
    display: block;
    font-size: 28px;
    margin-bottom: 6px;
}

.cards {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
    gap: 16px;
}

.list-card {
    padding: 18px;
}

.card-title {
    margin: 0 0 10px;
    font-size: 20px;
}

.price {
    font-size: 28px;
    color: #0f766e;
    font-weight: 700;
}

.meta {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin: 10px 0 14px;
}

form {
    display: grid;
    gap: 12px;
}

label {
    display: grid;
    gap: 6px;
    font-size: 14px;
    color: #2f4750;
}

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

input,
select,
textarea {
    width: 100%;
    padding: 12px 14px;
    border-radius: 14px;
    border: 1px solid #d7e5e7;
    background: #fff;
}

textarea {
    min-height: 100px;
    resize: vertical;
}

button {
    padding: 12px 18px;
    border: 0;
    border-radius: 14px;
    background: #0f766e;
    color: #fff;
    cursor: pointer;
    transition: transform 0.15s ease, opacity 0.15s ease;
}

button:hover {
    transform: translateY(-1px);
    opacity: 0.95;
}

button.secondary {
    background: #dfeceb;
    color: #15404d;
}

button.warn {
    background: #c65a3e;
}

.button-row {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.topbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 18px;
}

.brand {
    font-size: 22px;
    font-weight: 800;
}

.shell {
    display: grid;
    grid-template-columns: 280px 1fr;
    gap: 20px;
}

.sidebar {
    padding: 20px;
    position: sticky;
    top: 20px;
    height: fit-content;
}

.sidebar nav {
    display: grid;
    gap: 8px;
    margin-top: 18px;
}

.nav-link {
    display: block;
    padding: 12px 14px;
    border-radius: 14px;
    text-decoration: none;
    background: #eef7f7;
    color: #264650;
}

.nav-link.active {
    background: #18313b;
    color: #fff;
}

.content {
    display: grid;
    gap: 20px;
}

.hidden {
    display: none !important;
}

.table-wrap {
    overflow: auto;
}

table {
    width: 100%;
    border-collapse: collapse;
}

th,
td {
    padding: 12px 10px;
    border-bottom: 1px solid #e7eff1;
    text-align: left;
    vertical-align: top;
}

.status {
    display: inline-flex;
    padding: 6px 10px;
    border-radius: 999px;
    font-size: 12px;
    background: #eef7f7;
    color: #0f766e;
}

.message {
    padding: 12px 14px;
    border-radius: 14px;
    background: #eef7f7;
    color: #185164;
    font-size: 14px;
}

.message.error {
    background: #fff0ed;
    color: #9f321c;
}

@media (max-width: 900px) {
    .hero,
    .shell,
    .grid-3,
    .grid-2,
    .stats {
        grid-template-columns: 1fr;
    }

    .layout {
        padding: 16px;
    }

    .sidebar {
        position: static;
    }
}