.header {
    background: #000;
    color: #e53935;
    padding: 1rem 2rem;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    display: flex;
    align-items: center;
    gap: 1rem;
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    z-index: 10000;
    justify-content: space-between;
}
.header-spacer {
    flex: 1;
}

.header-logo {
    height: 60px;
    width: 60px;
    object-fit: contain;
    margin-right: 0.5rem;
}

.header-left {
    display: flex;
    align-items: center;
    gap: 0.7rem;
}

.header h1 {
    font-size: 1.8rem;
    font-weight: 700;
    color: #e53935;
    margin: 0;
}

.sidebar-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    height: 40px;
    width: 40px;
    margin-right: 1rem;
    z-index: 3000;
}
.sidebar-toggle span {
    display: block;
    width: 28px;
    height: 4px;
    margin: 4px 0;
    background: #e53935;
    border-radius: 2px;
    transition: 0.3s;
}

.header-title-mobile {
    display: none;
}

.header-right .btn, .header .btn {
    background: #e53935;
    color: #fff;
    border: none;
    padding: 0.7rem 1.3rem;
    border-radius: 8px;
    cursor: pointer;
    font-size: 1rem;
    font-weight: 600;
    transition: all 0.3s cubic-bezier(.4,0,.2,1);
    margin: 0 0.5rem;
    box-shadow: 0 2px 8px rgba(229,57,53,0.10);
}
.header-right .btn:hover, .header .btn:hover {
    background: #b71c1c;
    transform: translateY(-2px) scale(1.03);
    box-shadow: 0 6px 16px rgba(229,57,53,0.18);
}

/* Responsividade para tablet */
@media (max-width: 1024px) {
    .header {
        padding: 0.7rem 1rem;
        gap: 0.7rem;
    }
    .header-logo {
        display: none;
    }
    .header h1 {
        font-size: 1.2rem;
    }
    .sidebar-toggle {
        display: flex !important;
    }
}

/* Responsividade para mobile */
@media (max-width: 600px) {
    .header {
        flex-direction: row;
        align-items: center;
        padding: 0.5rem 0.5rem;
        gap: 0.3rem;
    }
    .header-logo {
        display: none;
    }
    .header h1 {
        font-size: 1rem;
        text-align: left;
    }
    .sidebar-toggle {
        width: 32px;
        height: 32px;
    }
    .sidebar-toggle span {
        width: 20px;
        height: 3px;
        margin: 3px 0;
    }
    .header-title-full {
        display: none;
    }
    .header-title-mobile {
        display: block;
        font-size: 1.3rem;
        color: #e53935;
        font-weight: 700;
        margin: 0 0 0 0.5rem;
    }
    .header-logo {
        height: 44px;
        width: 44px;
        margin-right: 0.5rem;
    }
}