*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

:root {
    --color-primary: #1a56db;
    --color-primary-dark: #1544b5;
    --color-primary-light: #3b82f6;
    --color-primary-bg: #eff6ff;

    --color-success: #059669;
    --color-success-bg: #ecfdf5;
    --color-warning: #d97706;
    --color-warning-bg: #fffbeb;
    --color-danger: #dc2626;
    --color-danger-bg: #fef2f2;
    --color-info: #0891b2;
    --color-info-bg: #ecfeff;

    --color-text: #0f172a;
    --color-text-secondary: #64748b;
    --color-text-muted: #94a3b8;

    --color-bg: #f8fafc;
    --color-bg-white: #ffffff;
    --color-border: #e2e8f0;
    --color-border-light: #f1f5f9;

    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-mono: 'SF Mono', 'Fira Code', monospace;

    --radius-sm: 4px;
    --radius-md: 6px;
    --radius-lg: 8px;
    --radius-xl: 12px;
    --radius-full: 9999px;

    --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.04);
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06), 0 1px 2px rgba(0, 0, 0, 0.04);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.06), 0 2px 4px -2px rgba(0, 0, 0, 0.04);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.06), 0 4px 6px -4px rgba(0, 0, 0, 0.03);

    --transition: 150ms ease;
}

@font-face { font-family: 'Inter'; font-style: normal; font-weight: 400; font-display: swap; src: url('/assets/fonts/Inter-Regular.ttf') format('truetype'); }
@font-face { font-family: 'Inter'; font-style: normal; font-weight: 500; font-display: swap; src: url('/assets/fonts/Inter-Medium.ttf') format('truetype'); }
@font-face { font-family: 'Inter'; font-style: normal; font-weight: 600; font-display: swap; src: url('/assets/fonts/Inter-SemiBold.ttf') format('truetype'); }
@font-face { font-family: 'Inter'; font-style: normal; font-weight: 700; font-display: swap; src: url('/assets/fonts/Inter-Bold.ttf') format('truetype'); }

html {
    font-size: 14px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-family);
    font-size: 14px;
    font-weight: 400;
    line-height: 1.5;
    color: var(--color-text);
    background-color: var(--color-bg);
}

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

.container { max-width: 1120px; margin: 0 auto; padding: 0 24px; }

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 8px 16px;
    font-family: var(--font-family);
    font-size: 13px;
    font-weight: 500;
    line-height: 1.4;
    border: 1px solid transparent;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition);
    text-decoration: none;
    white-space: nowrap;
    user-select: none;
    outline: none;
}

.btn:hover { text-decoration: none; }
.btn:disabled { opacity: 0.5; cursor: not-allowed; }
.btn:focus-visible { box-shadow: 0 0 0 2px var(--color-bg-white), 0 0 0 4px var(--color-primary); }

.btn-primary { background: var(--color-primary); color: #fff; border-color: var(--color-primary); }
.btn-primary:hover:not(:disabled) { background: var(--color-primary-dark); border-color: var(--color-primary-dark); }

.btn-outline { background: var(--color-bg-white); color: var(--color-text-secondary); border-color: var(--color-border); }
.btn-outline:hover:not(:disabled) { background: var(--color-bg); color: var(--color-text); border-color: var(--color-text-muted); }

.btn-ghost { background: transparent; color: var(--color-text-secondary); border-color: transparent; }
.btn-ghost:hover:not(:disabled) { background: var(--color-border-light); color: var(--color-text); }

.btn-danger { background: var(--color-danger); color: #fff; border-color: var(--color-danger); }
.btn-danger:hover:not(:disabled) { background: #b91c1c; border-color: #b91c1c; }

.btn-block { display: flex; width: 100%; }
.btn-sm { padding: 4px 12px; font-size: 12px; }

.form-group { margin-bottom: 20px; }
.form-label { display: block; margin-bottom: 4px; font-size: 13px; font-weight: 500; color: var(--color-text); }

.form-input {
    display: block;
    width: 100%;
    padding: 8px 12px;
    font-family: var(--font-family);
    font-size: 14px;
    line-height: 1.5;
    color: var(--color-text);
    background: var(--color-bg-white);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    transition: border-color var(--transition), box-shadow var(--transition);
    outline: none;
}

.form-input::placeholder { color: var(--color-text-muted); }
.form-input:focus { border-color: var(--color-primary); box-shadow: 0 0 0 3px rgba(26, 86, 219, 0.08); }
.form-input:disabled { background: var(--color-border-light); cursor: not-allowed; }

.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }

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

.card {
    background: var(--color-bg-white);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xs);
}

.card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 20px;
    border-bottom: 1px solid var(--color-border-light);
}

.card-title { font-size: 13px; font-weight: 600; color: var(--color-text); letter-spacing: -0.01em; }
.card-action { font-size: 12px; font-weight: 500; color: var(--color-primary); }
.card-body { padding: 20px; }

.badge {
    display: inline-flex;
    align-items: center;
    padding: 2px 8px;
    font-size: 11px;
    font-weight: 500;
    border-radius: var(--radius-full);
    letter-spacing: 0.01em;
}

.badge-success { background: var(--color-success-bg); color: var(--color-success); }
.badge-warning { background: var(--color-warning-bg); color: var(--color-warning); }
.badge-danger { background: var(--color-danger-bg); color: var(--color-danger); }
.badge-info { background: var(--color-info-bg); color: var(--color-info); }
.badge-outline { background: transparent; color: var(--color-text-secondary); border: 1px solid var(--color-border); }

.alert {
    padding: 12px 16px;
    border-radius: var(--radius-md);
    font-size: 13px;
    margin-bottom: 16px;
    border: 1px solid transparent;
}

.alert-danger { background: var(--color-danger-bg); color: var(--color-danger); border-color: #fecaca; }
.alert-success { background: var(--color-success-bg); color: var(--color-success); border-color: #a7f3d0; }
.alert-warning { background: var(--color-warning-bg); color: var(--color-warning); border-color: #fde68a; }

.info-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px 0;
    border-bottom: 1px solid var(--color-border-light);
}

.info-row:last-child { border-bottom: none; }
.info-label { font-size: 13px; color: var(--color-text-secondary); }
.info-value { font-size: 13px; font-weight: 500; color: var(--color-text); }

.status-dot {
    display: inline-block;
    width: 7px;
    height: 7px;
    border-radius: 50%;
    margin-right: 6px;
    flex-shrink: 0;
}

.status-active { background: var(--color-success); }
.status-inactive { background: var(--color-danger); }

.avatar-circle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    border-radius: 50%;
    color: #fff;
    font-size: 12px;
    font-weight: 600;
    letter-spacing: 0.02em;
    flex-shrink: 0;
}

.avatar-sm { width: 24px; height: 24px; font-size: 10px; }

.spinner {
    display: inline-block;
    width: 14px;
    height: 14px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    border-top-color: #fff;
    animation: spin 0.6s linear infinite;
}

@keyframes spin { to { transform: rotate(360deg); } }

.text-center { text-align: center; }
.text-muted { color: var(--color-text-muted); }
.text-secondary { color: var(--color-text-secondary); }
.text-success { color: var(--color-success); }
.text-danger { color: var(--color-danger); }
.text-sm { font-size: 13px; }
.text-xs { font-size: 11px; }

.loading-placeholder {
    padding: 32px;
    text-align: center;
    color: var(--color-text-muted);
    font-size: 13px;
}

.empty-state {
    padding: 40px;
    text-align: center;
}

.pagination {
    display: flex;
    gap: 4px;
    justify-content: center;
    padding: 20px 0;
}

@media (max-width: 768px) {
    .container { padding: 0 16px; }
    .form-row { grid-template-columns: 1fr; }
}