:root {
    --bg: #f1f3f6;
    --panel: #ffffff;
    --text: #18202b;
    --line: #d4dbe5;
    --nav-bg: #253243;
    --nav-link: #d4dee9;
    --nav-link-active: #ffffff;
    --primary: #245ea8;
    --primary-hover: #1d4f8e;
    --danger: #b44141;
    --ok: #2f7a40;
    --warn: #97731f;
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: "Segoe UI", Tahoma, Arial, sans-serif;
    color: var(--text);
    background: var(--bg);
}

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

a:hover {
    text-decoration: underline;
}

.app-shell {
    display: grid;
    grid-template-columns: 250px 1fr;
    min-height: 100vh;
}

.app-nav {
    background: var(--nav-bg);
    color: var(--nav-link);
    padding: 20px 12px;
}

.app-nav .brand {
    font-size: 20px;
    color: #fff;
    margin: 0 10px 16px;
    font-weight: 600;
}

.app-nav nav {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.app-nav nav a {
    color: var(--nav-link);
    padding: 10px 12px;
    border-radius: 6px;
    font-size: 14px;
}

.app-nav nav a.active,
.app-nav nav a:hover {
    color: var(--nav-link-active);
    background: rgba(255, 255, 255, 0.15);
    text-decoration: none;
}

.app-main {
    display: flex;
    flex-direction: column;
}

.app-header {
    background: #fff;
    border-bottom: 1px solid var(--line);
    padding: 16px 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.app-header h1 {
    margin: 0;
    font-size: 22px;
}

.user-box {
    text-align: right;
    font-size: 13px;
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.app-content {
    padding: 20px;
    display: grid;
    gap: 16px;
}

.panel {
    background: var(--panel);
    border: 1px solid var(--line);
    border-radius: 8px;
    padding: 14px;
}

.panel h2 {
    margin-top: 0;
    font-size: 18px;
}

.panel-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 10px;
    margin-bottom: 10px;
}

.panel-header input[type="search"] {
    max-width: 280px;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(170px, 1fr));
    gap: 12px;
}

.stat-card {
    background: #fff;
    border: 1px solid var(--line);
    border-radius: 8px;
    padding: 14px;
}

.stat-card h2 {
    margin: 0;
    font-size: 15px;
    color: #4c5e75;
}

.stat-value {
    margin-top: 10px;
    font-size: 26px;
    font-weight: 700;
}

.badge {
    display: inline-block;
    border-radius: 999px;
    padding: 3px 10px;
    font-size: 12px;
    font-weight: 600;
    border: 1px solid transparent;
    text-transform: lowercase;
}

.badge-active,
.badge-created,
.badge-sent,
.badge-paid {
    background: #e7f5ea;
    color: #2f7a40;
    border-color: #c9e8d0;
}

.badge-paused,
.badge-draft {
    background: #fff5d9;
    color: #97731f;
    border-color: #f3dfab;
}

.badge-cancelled,
.badge-expired,
.badge-inactive {
    background: #fbe5e5;
    color: #a53b3b;
    border-color: #efc7c7;
}

.alert {
    border-radius: 8px;
    padding: 10px 12px;
    border: 1px solid;
}

.alert-success {
    background: #e7f5ea;
    border-color: #c9e8d0;
    color: #2f7a40;
}

.alert-error {
    background: #fbe5e5;
    border-color: #efc7c7;
    color: #a53b3b;
}

.btn {
    display: inline-block;
    padding: 8px 12px;
    border: 1px solid var(--line);
    border-radius: 6px;
    background: #fff;
    color: var(--text);
    cursor: pointer;
    font-size: 14px;
}

.btn:hover {
    text-decoration: none;
}

.btn-primary {
    background: var(--primary);
    color: #fff;
    border-color: var(--primary);
}

.btn-primary:hover {
    background: var(--primary-hover);
    border-color: var(--primary-hover);
}

.btn-secondary {
    background: #eef2f7;
}

.btn-danger {
    background: #fff0f0;
    border-color: #e8b6b6;
    color: #9c3030;
}

.btn-small {
    padding: 5px 8px;
    font-size: 12px;
}

.actions {
    display: flex;
    gap: 8px;
    align-items: center;
}

.inline-form {
    display: inline-flex;
    gap: 6px;
    align-items: center;
    margin: 0;
}

.small-select {
    padding: 5px;
}

.login-body,
.setup-body {
    background: #e9edf3;
}

.login-box,
.setup-container {
    width: min(960px, 94%);
    margin: 40px auto;
    background: #fff;
    border: 1px solid var(--line);
    border-radius: 10px;
    padding: 20px;
}

.login-box {
    width: min(430px, 92%);
}

.login-box h1,
.setup-container h1 {
    margin-top: 0;
}

@media (max-width: 980px) {
    .app-shell {
        grid-template-columns: 1fr;
    }

    .app-nav {
        padding-bottom: 8px;
    }

    .app-nav nav {
        flex-direction: row;
        overflow-x: auto;
    }

    .app-main {
        min-width: 0;
    }

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

    .panel-header {
        flex-direction: column;
        align-items: stretch;
    }
}