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

:root,
:root[data-theme="dark"] {
    color-scheme: dark;
    --bg-primary: #0c0c0f;
    --bg-secondary: #141419;
    --bg-tertiary: #1c1c24;
    --bg-hover: #22222e;
    --border: #2a2a36;
    --text-primary: #e0e0e6;
    --text-secondary: #8888a0;
    --text-muted: #555568;
    --accent: #4a9eff;
    --accent-hover: #3a8eef;
    --danger: #e04040;
    --success: #40c060;
    --on-accent: #000;
    --radius: 6px;
    --transition: 150ms ease;
}

:root[data-theme="light"] {
    color-scheme: light;
    --bg-primary: #f5f6f8;
    --bg-secondary: #ffffff;
    --bg-tertiary: #eceef2;
    --bg-hover: #e3e6ec;
    --border: #d6dae2;
    --text-primary: #16161d;
    --text-secondary: #50505f;
    --text-muted: #6b6b7e;
    --accent: #1f6fd1;
    --accent-hover: #185cb0;
    --danger: #c62828;
    --success: #2a9447;
    --on-accent: #fff;
}

html, body {
    transition: background-color var(--transition), border-color var(--transition), color var(--transition);
}

html, body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
}

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

a:hover {
    color: var(--accent-hover);
}

h1, h2, h3, h4 {
    font-weight: 600;
    letter-spacing: -0.02em;
}

input, select, textarea {
    font-family: inherit;
    font-size: 0.9rem;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.6rem 1.2rem;
    border: 1px solid transparent;
    border-radius: var(--radius);
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition);
    line-height: 1.4;
}

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

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

.btn-primary:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.btn-danger {
    background: transparent;
    color: var(--danger);
    border-color: var(--danger);
}

.btn-danger:hover {
    background: rgba(224, 64, 64, 0.1);
}

.form-control {
    width: 100%;
    padding: 0.6rem 0.8rem;
    background: var(--bg-tertiary);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    color: var(--text-primary);
    font-size: 0.9rem;
    transition: border-color var(--transition);
}

.form-control:focus {
    outline: none;
    border-color: var(--accent);
}

.form-control::placeholder {
    color: var(--text-muted);
}

.form-group label {
    display: block;
    margin-bottom: 0.35rem;
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.alert-danger {
    padding: 0.6rem 0.8rem;
    background: rgba(224, 64, 64, 0.1);
    border: 1px solid rgba(224, 64, 64, 0.25);
    border-radius: var(--radius);
    color: var(--danger);
    font-size: 0.85rem;
    margin-bottom: 1rem;
}

.spinner-border {
    display: inline-block;
    width: 1rem;
    height: 1rem;
    border: 2px solid currentColor;
    border-right-color: transparent;
    border-radius: 50%;
    animation: spin 0.6s linear infinite;
}

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

#blazor-error-ui {
    background: var(--bg-secondary);
    border-top: 1px solid var(--danger);
    color: var(--text-primary);
    bottom: 0;
    display: none;
    left: 0;
    padding: 0.6rem 1.25rem;
    position: fixed;
    width: 100%;
    z-index: 1000;
}

#blazor-error-ui .dismiss {
    cursor: pointer;
    position: absolute;
    right: 0.75rem;
    top: 0.5rem;
}