/* Header Component Styles */

:root {
    --header-height: 64px;
    --header-bg: #ffffff;
    --header-border: #e5e7eb;
    --header-shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
    --primary-color: #3b82f6;
    --primary-hover: #2563eb;
    --text-primary: #111827;
    --text-secondary: #6b7280;
    --dropdown-bg: #ffffff;
    --dropdown-shadow: 0 10px 25px 0 rgba(0, 0, 0, 0.1), 0 4px 6px 0 rgba(0, 0, 0, 0.05);
    --success-color: #10b981;
    --warning-color: #f59e0b;
    --danger-color: #ef4444;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Header Container */
.app-header {
    position: sticky;
    top: 0;
    z-index: 1000;
    background: var(--header-bg);
    border-bottom: 1px solid var(--header-border);
    box-shadow: var(--header-shadow);
    transition: var(--transition);
}

.header-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 1rem;
    height: var(--header-height);
    max-width: 100%;
}

/* Header Left Section */
.header-left {
    display: flex;
    align-items: center;
    gap: 1rem;
}

/* Menu Toggle Button */
.menu-toggle-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: none;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    transition: var(--transition);
    position: relative;
}

.menu-toggle-btn:hover {
    background-color: #f3f4f6;
}

.menu-toggle-btn:active {
    transform: scale(0.95);
}

.menu-toggle-btn.active {
    background-color: var(--primary-color);
}

.menu-toggle-btn.active .hamburger-icon .line {
    background-color: white;
}

/* Hamburger Icon */
.hamburger-icon {
    display: flex;
    flex-direction: column;
    gap: 3px;
    width: 18px;
    height: 14px;
}

.hamburger-icon .line {
    width: 100%;
    height: 2px;
    background-color: var(--text-primary);
    border-radius: 1px;
    transition: var(--transition);
}

.menu-toggle-btn.active .hamburger-icon .line:nth-child(1) {
    transform: translateY(5px) rotate(45deg);
}

.menu-toggle-btn.active .hamburger-icon .line:nth-child(2) {
    opacity: 0;
}

.menu-toggle-btn.active .hamburger-icon .line:nth-child(3) {
    transform: translateY(-5px) rotate(-45deg);
}

/* App Logo */
.app-logo {
    text-decoration: none;
    color: var(--text-primary);
    font-size: 1.5rem;
    font-weight: 700;
    transition: var(--transition);
}

.app-logo:hover {
    color: var(--primary-color);
    text-decoration: none;
}

.logo-text {
    background: linear-gradient(135deg, var(--primary-color), #8b5cf6);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Header Right Section */
.header-right {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

/* Action Buttons */
.action-btn {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    background: none;
    border: 1px solid transparent;
    border-radius: 8px;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-primary);
    cursor: pointer;
    transition: var(--transition);
    white-space: nowrap;
}

.action-btn:hover {
    background-color: #f3f4f6;
    border-color: #e5e7eb;
}

.action-btn.active {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
    color: white;
}

.action-btn i {
    font-size: 1rem;
}

.btn-text {
    display: none;
}

/* Dropdown Arrows */
.dropdown-arrow {
    font-size: 0.75rem;
    transition: var(--transition);
}

.action-btn.active .dropdown-arrow {
    transform: rotate(180deg);
}

/* Action Button Group */
.action-button-group {
    position: relative;
}



/* Notebook Button Specific */
.notebook-btn {
    color: var(--success-color);
    border-color: transparent;
}

.notebook-btn:hover {
    background-color: #f0fdf4;
    border-color: #bbf7d0;
}

/* User Profile Section */
.user-profile-section {
    position: relative;
    margin-left: 0.5rem;
}

.profile-btn {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.25rem 0.5rem;
    background: none;
    border: 1px solid transparent;
    border-radius: 8px;
    cursor: pointer;
    transition: var(--transition);
    min-width: 120px;
}

.profile-btn:hover {
    background-color: #f3f4f6;
    border-color: #e5e7eb;
}

.profile-btn.active {
    background-color: #f3f4f6;
    border-color: #d1d5db;
}

.user-avatar {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    background: linear-gradient(135deg, var(--primary-color), #8b5cf6);
    border-radius: 50%;
    color: white;
    font-size: 0.875rem;
}

.user-name {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-primary);
    max-width: 80px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

/* Dropdown Menus */
.dropdown-menu {
    position: absolute;
    top: calc(100% + 0.5rem);
    right: 0;
    min-width: 200px;
    background: var(--dropdown-bg);
    border: 1px solid var(--header-border);
    border-radius: 12px;
    box-shadow: var(--dropdown-shadow);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: var(--transition);
    z-index: 1100;
}

.dropdown-menu.active {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}



/* Profile Dropdown */
.profile-dropdown {
    min-width: 260px;
}

/* Dropdown Header */
.dropdown-header {
    padding: 1rem;
    border-bottom: 1px solid #f3f4f6;
}

.user-info {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.user-avatar-large {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    background: linear-gradient(135deg, var(--primary-color), #8b5cf6);
    border-radius: 50%;
    color: white;
    font-size: 1.25rem;
}

.user-details {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.user-name-large {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-primary);
}

.user-role {
    font-size: 0.75rem;
    color: var(--text-secondary);
}

/* Dropdown Items */
.dropdown-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem 1rem;
    font-size: 0.875rem;
    color: var(--text-primary);
    text-decoration: none;
    background: none;
    border: none;
    width: 100%;
    text-align: left;
    cursor: pointer;
    transition: var(--transition);
}

.dropdown-item:hover {
    background-color: #f9fafb;
    color: var(--text-primary);
    text-decoration: none;
}

.dropdown-item:first-of-type {
    border-top-left-radius: 12px;
    border-top-right-radius: 12px;
}

.dropdown-item:last-of-type {
    border-bottom-left-radius: 12px;
    border-bottom-right-radius: 12px;
}

.dropdown-item i {
    width: 16px;
    text-align: center;
    color: var(--text-secondary);
}

/* Logout Button */
.logout-btn {
    color: var(--danger-color);
    border-top: 1px solid #f3f4f6;
}

.logout-btn:hover {
    background-color: #fef2f2;
    color: var(--danger-color);
}

.logout-btn i {
    color: var(--danger-color);
}

/* Dropdown Divider */
.dropdown-divider {
    height: 1px;
    background-color: #f3f4f6;
    margin: 0.5rem 0;
}

/* Error State */
.header-error {
    padding: 1rem;
    background-color: #fef2f2;
    color: var(--danger-color);
    font-size: 0.875rem;
    text-align: center;
    border-radius: 8px;
}

/* Responsive Design */
@media (min-width: 640px) {
    .header-container {
        padding: 0 1.5rem;
    }
    
    .btn-text {
        display: inline;
    }
    
    .action-btn {
        padding: 0.5rem 1rem;
    }
}

@media (min-width: 768px) {
    .header-container {
        padding: 0 2rem;
    }
    
    .header-right {
        gap: 1rem;
    }
}

@media (min-width: 1024px) {
    .profile-btn {
        min-width: 140px;
    }
    
    .user-name {
        max-width: 100px;
    }
}

/* Focus States for Accessibility */
.menu-toggle-btn:focus,
.action-btn:focus,
.profile-btn:focus {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

.dropdown-item:focus {
    background-color: #f9fafb;
    outline: none;
}

/* Animation for dropdown appear */
@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.dropdown-menu.active {
    animation: slideDown 0.2s ease-out;
}