/* App Header y Layout Principal */

/* ═══ HEADER HORIZONTAL ═══ */
.app-header {
    width: 100%;
    height: var(--header-height);
    background: var(--bg-header);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    padding: 0 1.5rem;
    flex-shrink: 0;
    box-shadow: 0 2px 20px rgba(0,0,0,0.4);
    z-index: 100;
    gap: 0.5rem;
}

.logo-area {
    font-size: 1.05rem;
    font-weight: 700;
    display: flex;
    align-items: center;
    gap: 0.6rem;
    color: var(--text-title);
    white-space: nowrap;
    margin-right: 1.5rem;
    padding-right: 1.5rem;
    border-right: 1px solid var(--border-light);
}

.logo-area i {
    font-size: 1.5rem;
    color: var(--accent);
    filter: drop-shadow(0 0 6px var(--accent));
}

/* ═══ NAV HORIZONTAL ═══ */
.nav-menu {
    display: flex;
    align-items: center;
    gap: 0.25rem;
    flex: 1;
}

.nav-item {
    background: transparent;
    border: 1px solid transparent;
    color: var(--text-light);
    text-align: center;
    padding: 0.5rem 1rem;
    border-radius: 6px;
    cursor: pointer;
    font-size: 0.85rem;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    transition: all 0.25s ease;
    white-space: nowrap;
}

.nav-item:hover {
    background-color: var(--glass-nav-hover);
    color: var(--text-title);
    border-color: var(--border);
}

.nav-item i {
    font-size: 1.1rem;
}

.nav-item.active {
    background: rgba(67,230,75,0.12);
    border-color: rgba(67,230,75,0.3);
    color: var(--accent);
    font-weight: 600;
}

.nav-item.active i {
    color: var(--accent);
    filter: drop-shadow(0 0 4px var(--shadow-accent));
}

/* Spacer para empujar elementos a la derecha */
.nav-spacer {
    flex: 1;
}

/* Header Info (opcional cloud status etc) */
.header-right {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-left: auto;
}

/* ═══ MAIN CONTENT ═══ */
.main-content {
    flex: 1;
    overflow-y: auto;
    padding: 1.5rem 2rem;
    position: relative;
}

.view-section {
    max-width: 1600px;
    margin: 0 auto;
    animation: fadeIn 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.section-header {
    margin-bottom: 1.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
    border-bottom: 1px solid var(--border-light);
    padding-bottom: 0.75rem;
}

.section-header h2 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-title);
    margin: 0;
    display: flex;
    align-items: center;
    gap: 0.6rem;
}

.section-header h2 i {
    color: var(--accent);
    filter: drop-shadow(0 0 8px var(--shadow-accent));
}