* {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: "Segoe UI", system-ui, -apple-system, sans-serif;
    color: var(--md-text);
    background: linear-gradient(180deg, var(--md-primary-bg) 0%, var(--md-bg) 40%, var(--md-bg-alt) 100%);
    line-height: 1.6;
}

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

.md-container {
    width: min(1120px, calc(100% - 2rem));
    margin: 0 auto;
}

.md-header {
    position: sticky;
    top: 0;
    z-index: 10;
    backdrop-filter: blur(12px);
    background: rgba(255, 255, 255, 0.85);
    border-bottom: 1px solid rgba(226, 232, 240, 0.9);
}

.md-header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    min-height: 72px;
}

.md-brand {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-weight: 700;
    font-size: 1.25rem;
}

.md-brand-logo {
    display: block;
    flex-shrink: 0;
}

.md-nav {
    display: flex;
    align-items: center;
    gap: 1.25rem;
}

.md-nav a {
    color: var(--md-muted);
    font-size: 0.95rem;
}

.md-nav a:hover {
    color: var(--md-text);
}

.md-nav-user {
    max-width: 12rem;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    color: var(--md-muted);
    font-size: 0.9rem;
}

.md-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.8rem 1.25rem;
    border-radius: 12px;
    font-weight: 600;
    border: 1px solid transparent;
}

.md-button-primary {
    background: var(--md-primary);
    color: #fff;
    box-shadow: 0 12px 30px rgba(37, 99, 235, 0.25);
}

.md-button-primary:hover {
    background: var(--md-primary-dark);
    color: #fff;
}

.md-nav a.md-button-primary,
.md-nav a.md-button-primary:hover {
    color: #fff;
}

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

.md-button-outline {
    background: transparent;
    border-color: var(--md-primary);
    color: var(--md-primary);
    box-shadow: none;
}

.md-button-outline:hover {
    background: var(--md-primary-bg);
    color: var(--md-primary-dark);
}

.md-button-block {
    width: 100%;
}

.md-card {
    background: var(--md-surface);
    border: 1px solid var(--md-border);
    border-radius: 24px;
    padding: 1.5rem;
    box-shadow: var(--md-shadow);
}

.md-footer {
    padding: 2rem 0 2.5rem;
    color: var(--md-muted);
    font-size: 0.92rem;
    text-align: center;
}

.md-page {
    padding: 2rem 0 3rem;
}

html {
    scroll-behavior: smooth;
}

@media (prefers-reduced-motion: reduce) {
    html {
        scroll-behavior: auto;
    }
}