/* Tool Header Styles - Premium Glass Theme */
.tool-header {
    position: sticky;
    top: 0;
    z-index: 1000;
    background: var(--bg-glass-strong);
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    border-bottom: 1px solid var(--border-light);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-normal);
}

.tool-header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg,
            transparent 0%,
            rgba(6, 182, 212, 0.4) 50%,
            transparent 100%);
}

.tool-header-container {
    max-width: var(--content-max-width);
    margin: 0 auto;
    padding: 0 30px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: var(--header-height);
}

/* Left Section */
.tool-header-left {
    display: flex;
    align-items: center;
    gap: 24px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
    transition: all var(--transition-fast);
    padding: 8px 12px;
    border-radius: 12px;
}

.logo:hover {
    background: rgba(255, 255, 255, 0.05);
}

.logo i {
    font-size: 24px;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    filter: drop-shadow(0 0 8px rgba(6, 182, 212, 0.3));
}

.logo span {
    font-size: 20px;
    font-weight: 700;
    letter-spacing: -0.5px;
    color: #fff;
}

.logo .ai-badge {
    font-size: 10px;
    background: var(--gradient-primary);
    padding: 2px 6px;
    border-radius: 6px;
    color: white;
    font-weight: 700;
    margin-left: 4px;
    vertical-align: super;
}

/* Right Section */
.tool-header-right {
    display: flex;
    align-items: center;
    gap: 20px;
}

.header-nav {
    display: flex;
    gap: 24px;
}

.header-link {
    color: #94a3b8;
    text-decoration: none;
    font-size: 14px;
    font-weight: 500;
    transition: color var(--transition-fast);
}

.header-link:hover {
    color: #fff;
}

.header-link.active {
    color: var(--clr-primary);
    position: relative;
}

.header-link.active::after {
    content: '';
    position: absolute;
    bottom: -26px;
    left: 0;
    width: 100%;
    height: 2px;
    background: var(--clr-primary);
    box-shadow: 0 -2px 10px var(--clr-primary);
}

/* User Menu */
.user-menu {
    position: relative;
}

.user-menu-btn {
    display: flex;
    align-items: center;
    gap: 12px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-light);
    padding: 6px 16px 6px 6px;
    border-radius: 30px;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.user-menu-btn:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: rgba(255, 255, 255, 0.2);
}

.user-avatar {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    object-fit: cover;
    border: 2px solid var(--bg-dark);
}

.user-info {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    line-height: 1.2;
}

.user-name {
    font-size: 13px;
    font-weight: 600;
    color: #fff;
}

.user-credits {
    font-size: 11px;
    color: var(--clr-primary);
}

/* Mobile Responsiveness */
@media (max-width: 1024px) {
    .header-nav {
        display: none;
    }

    .logo span {
        display: none;
    }
}

@media (max-width: 768px) {
    .tool-header-container {
        padding: 0 15px;
    }

    .user-info {
        display: none;
    }

    .user-menu-btn {
        padding: 6px;
        border-radius: 50%;
    }
}

/* ============================================
   DROPDOWN MENU
   ============================================ */

.user-menu-dropdown {
    position: absolute;
    top: calc(100% + 12px);
    right: 0;
    min-width: 280px;
    background: rgba(20, 20, 35, 0.98);
    backdrop-filter: blur(30px);
    -webkit-backdrop-filter: blur(30px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 20px;
    padding: 12px;
    display: none;
    box-shadow:
        0 20px 60px rgba(0, 0, 0, 0.5),
        0 0 0 1px rgba(102, 126, 234, 0.1),
        inset 0 1px 0 rgba(255, 255, 255, 0.1);
    animation: dropdownFadeIn 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    transform-origin: top right;
}

@keyframes dropdownFadeIn {
    from {
        opacity: 0;
        transform: translateY(-10px) scale(0.95);
    }

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

.user-menu-dropdown.active {
    display: block;
}

.user-menu-dropdown::before {
    content: '';
    position: absolute;
    top: -8px;
    right: 24px;
    width: 16px;
    height: 16px;
    background: rgba(20, 20, 35, 0.98);
    border-left: 1px solid rgba(255, 255, 255, 0.1);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    transform: rotate(45deg);
}

.user-info {
    padding: 16px;
    border-radius: 14px;
    background: rgba(102, 126, 234, 0.08);
    border: 1px solid rgba(102, 126, 234, 0.15);
    margin-bottom: 12px;
}

.user-name {
    font-size: 16px;
    font-weight: 700;
    color: white;
    margin-bottom: 6px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.user-email {
    font-size: 13px;
    color: rgba(255, 255, 255, 0.5);
    word-break: break-all;
    font-weight: 500;
}

.menu-divider {
    height: 1px;
    background: linear-gradient(90deg,
            transparent 0%,
            rgba(255, 255, 255, 0.1) 50%,
            transparent 100%);
    margin: 12px 0;
}

.user-menu-link {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 14px 16px;
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    border-radius: 12px;
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    font-size: 14px;
    font-weight: 600;
    position: relative;
    overflow: hidden;
}

.user-menu-link::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 3px;
    background: linear-gradient(135deg, #667eea, #764ba2);
    transform: scaleY(0);
    transition: transform 0.2s;
}

.user-menu-link:hover::before {
    transform: scaleY(1);
}

.user-menu-link i {
    width: 20px;
    text-align: center;
    font-size: 16px;
    transition: transform 0.2s;
}

.user-menu-link:hover {
    background: rgba(102, 126, 234, 0.12);
    color: white;
    padding-left: 20px;
}

.user-menu-link:hover i {
    transform: scale(1.15);
}

.user-menu-link.logout {
    color: #ef4444;
    margin-top: 4px;
}

.user-menu-link.logout:hover {
    background: rgba(239, 68, 68, 0.12);
    color: #ff6b6b;
}

.user-menu-link.logout::before {
    background: #ef4444;
}

/* ============================================
   RESPONSIVE DESIGN
   ============================================ */

@media (max-width: 1024px) {
    .sidebar-toggle {
        display: flex;
        align-items: center;
        justify-content: center;
    }
}

@media (max-width: 768px) {
    .tool-header-container {
        padding: 0 16px;
        height: 64px;
    }

    .tool-header-left {
        gap: 12px;
    }

    .logo {
        padding: 6px 12px;
    }

    .logo i {
        font-size: 24px;
    }

    .logo span {
        font-size: 18px;
    }

    .user-menu-btn {
        padding: 6px 14px 6px 6px;
    }

    .user-avatar {
        width: 38px;
        height: 38px;
        font-size: 14px;
    }

    .user-name-display .name {
        font-size: 13px;
    }

    .user-name-display .role {
        font-size: 10px;
    }

    .user-menu-dropdown {
        min-width: 260px;
        right: -8px;
    }

    .user-info {
        padding: 12px;
    }

    .user-name {
        font-size: 15px;
    }

    .user-email {
        font-size: 12px;
    }

    .user-menu-link {
        padding: 12px 14px;
        font-size: 13px;
    }
}

@media (max-width: 480px) {
    .user-name-display {
        display: none;
    }

    .user-menu-btn {
        padding: 0;
        background: transparent;
        border: none;
    }

    .user-menu-btn:hover {
        background: transparent;
        box-shadow: none;
    }
}