/* =========================
   BASE / RESET
========================= */

:root {
    --color-bg: #f1f5f9;
    --color-bg-soft: #f3f6fb;
    --color-white: #ffffff;
    --color-surface: #ffffff;
    --color-surface-soft: #f8fafc;

    --color-text: #111827;
    --color-text-soft: #475569;
    --color-text-muted: #64748b;
    --color-border: #e5e7eb;
    --color-border-soft: #e8edf5;
    --color-border-strong: #d8e1ec;

    --color-sidebar-start: #0f172a;
    --color-sidebar-end: #16243b;

    --color-primary: #2563eb;
    --color-primary-dark: #1d4ed8;
    --color-primary-soft: rgba(37, 99, 235, 0.12);

    --color-success: #16a34a;
    --color-success-dark: #15803d;
    --color-success-soft: rgba(22, 163, 74, 0.12);

    --color-warning: #d97706;
    --color-warning-dark: #b45309;
    --color-warning-soft: rgba(217, 119, 6, 0.12);

    --color-danger: #dc2626;
    --color-danger-dark: #b91c1c;
    --color-danger-soft: rgba(220, 38, 38, 0.12);

    --color-info: #0ea5e9;
    --color-info-soft: rgba(14, 165, 233, 0.12);

    --color-dark-btn: #0f172a;
    --color-dark-btn-hover: #1e293b;

    --sidebar-width: 290px;
    --header-height: 88px;
    --footer-height: 64px;

    --content-max-width: 1480px;

    --radius-xs: 6px;
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 18px;
    --radius-2xl: 22px;

    --space-1: 4px;
    --space-2: 8px;
    --space-3: 12px;
    --space-4: 16px;
    --space-5: 20px;
    --space-6: 24px;
    --space-7: 28px;
    --space-8: 32px;

    --shadow-card: 0 10px 30px rgba(15, 23, 42, 0.06);
    --shadow-sm: 0 4px 14px rgba(15, 23, 42, 0.08);
    --shadow-md: 0 10px 25px rgba(15, 23, 42, 0.10);
    --shadow-lg: 0 18px 40px rgba(15, 23, 42, 0.16);

    --font-family: 'Segoe UI', Arial, sans-serif;
    --transition: all 0.22s ease;
}

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

html,
body {
    margin: 0;
    padding: 0;
    min-height: 100%;
    font-family: var(--font-family);
    background: var(--color-bg);
    color: var(--color-text);
}

body {
    overflow: hidden;
    line-height: 1.5;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

a {
    color: inherit;
    text-decoration: none;
}

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

button {
    appearance: none;
    -webkit-appearance: none;
}

[hidden] {
    display: none !important;
}

::selection {
    background: rgba(37, 99, 235, 0.18);
    color: #0f172a;
}

h1,
h2,
h3,
h4,
h5,
h6 {
    margin-top: 0;
    color: #0f172a;
    line-height: 1.2;
}

p {
    margin-top: 0;
}

hr {
    border: 0;
    border-top: 1px solid var(--color-border);
    margin: 0;
}

.text-muted,
.muted {
    color: #94a3b8;
}

.text-soft {
    color: var(--color-text-soft);
}

.text-success {
    color: var(--color-success);
}

.text-warning {
    color: var(--color-warning);
}

.text-danger {
    color: var(--color-danger);
}

.bg-soft {
    background: var(--color-bg-soft);
}

@media (max-width: 900px) {
    body {
        overflow: auto;
    }
}