:root {
    /* Brysma brand */
    --color-primary: #3fd89d;
    --color-primary-hover: #31c98e;
    --color-primary-dark: #149768;
    --color-primary-soft: #e8faf3;

    /* Layout */
    --color-page: #f5f7fa;
    --color-surface: #ffffff;
    --color-surface-muted: #f8fafc;

    /* Navigation */
    --color-sidebar: #0f172a;
    --color-sidebar-hover: #1e293b;
    --color-sidebar-text: #cbd5e1;

    /* Text */
    --color-text: #111827;
    --color-text-secondary: #64748b;
    --color-text-muted: #94a3b8;
    --color-text-inverse: #ffffff;

    /* Borders and states */
    --color-border: #e2e8f0;
    --color-border-strong: #cbd5e1;
    --color-success: #22c55e;
    --color-warning: #f59e0b;
    --color-danger: #ef4444;
    --color-info: #3b82f6;

    /* Shape */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 18px;
    --radius-xl: 24px;

    /* Shadow */
    --shadow-sm: 0 1px 3px rgba(15, 23, 42, 0.06);
    --shadow-md: 0 12px 35px rgba(15, 23, 42, 0.09);

    /* Layout measurements */
    --container-width: 1200px;
    --sidebar-width: 260px;
    --topbar-height: 72px;

    --transition: 180ms ease;
}

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    font-family: Inter, Arial, Helvetica, sans-serif;
    color: var(--color-text);
    background: var(--color-page);
}

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

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

img {
    max-width: 100%;
}

.btn {
    min-height: 44px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 0 20px;
    border: 1px solid transparent;
    border-radius: var(--radius-md);
    font-weight: 700;
    cursor: pointer;
    transition:
        background var(--transition),
        border-color var(--transition),
        transform var(--transition);
}

.btn:hover {
    transform: translateY(-1px);
}

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

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

.btn-secondary {
    color: var(--color-text);
    border-color: var(--color-border);
    background: var(--color-surface);
}

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

.card-body {
    padding: 24px;
}