/* Reset básico */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

html {
    font-size: 16px;
    height: 100%;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family-base);
    background-color: var(--color-background);
    color: var(--color-text-primary);
    line-height: 1.6;
    min-height: 100%;
    display: flex;
    flex-direction: column;
}

/* Layout */
.main-content {
    flex: 1;
    width: 100%;
    max-width: var(--container-width);
    margin: 0 auto;
    padding: var(--spacing-xl) var(--spacing-md);
    animation: fadeIn var(--transition-normal);
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Header */
.header {
    background-color: rgba(255, 255, 255, 0.85);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--color-border);
    height: var(--header-height);
    position: sticky;
    top: 0;
    z-index: 100;
    transition: all var(--transition-fast);
}

.header__container {
    max-width: var(--container-width);
    margin: 0 auto;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 var(--spacing-md);
}

.header__logo {
    display: flex;
    align-items: center;
}

.header__title {
    font-size: var(--font-size-lg);
    font-weight: 700;
    background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    letter-spacing: -0.025em;
}

.header__nav-list {
    display: flex;
    list-style: none;
    gap: var(--spacing-lg);
    align-items: center;
}

.header__nav-item {
    display: flex;
    align-items: center;
}

.header__nav-link {
    text-decoration: none;
    color: var(--color-text-secondary);
    font-weight: 500;
    font-size: var(--font-size-sm);
    transition: color var(--transition-fast);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--border-radius-sm);
}

.header__nav-link:hover,
.header__nav-link--active {
    color: var(--color-primary);
    background-color: var(--color-primary-light);
}

.header__user-info {
    color: var(--color-text-primary);
    font-weight: 600;
    font-size: var(--font-size-sm);
    padding: var(--spacing-xs) var(--spacing-md);
    background-color: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-full);
}

.header__nav-link--logout {
    color: var(--color-error);
}

.header__nav-link--logout:hover {
    color: #b91c1c;
    /* Red 700 */
    background-color: #fef2f2;
    /* Red 50 */
}

/* Footer */
.main-footer {
    background-color: var(--color-surface);
    padding: var(--spacing-xl) 0;
    margin-top: auto;
    border-top: 1px solid var(--color-border);
    text-align: center;
    color: var(--color-text-secondary);
    font-size: var(--font-size-sm);
}

/* Utilitários */
.visually-hidden {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* Focus visível para acessibilidade */
:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

/* Tooltip Custom Scrollbar */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: transparent;
}

::-webkit-scrollbar-thumb {
    background: #cbd5e1;
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: #94a3b8;
}