/* Card Component */
.card {
    background-color: var(--card-bg);
    border-radius: var(--card-border-radius);
    padding: 1.5rem;
    box-shadow: 0 2px 4px var(--shadow-color);
    transition: transform var(--transition-speed) ease, box-shadow var(--transition-speed) ease;
}

.card:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 8px var(--shadow-color);
}

.card-header {
    margin-bottom: 1rem;
}

.card-title {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-color);
}

.card-subtitle {
    font-size: 0.875rem;
    color: var(--secondary-color);
}

.card-body {
    color: var(--text-color);
}

.card-footer {
    margin-top: 1rem;
    padding-top: 1rem;
    border-top: 1px solid var(--border-color);
}

/* Badge Component */
.badge {
    display: inline-flex;
    align-items: center;
    padding: 0.25rem 0.75rem;
    border-radius: 9999px;
    font-size: 0.875rem;
    font-weight: 500;
}

.badge-primary {
    background-color: rgba(79, 70, 229, 0.1);
    color: var(--primary-color);
}

.badge-secondary {
    background-color: var(--secondary-color);
    color: white;
}

.badge-success {
    background-color: var(--success-color);
    color: white;
}

.badge-error {
    background-color: var(--error-color);
    color: white;
}

/* Avatar Component */
.avatar {
    width: 2.5rem;
    height: 2.5rem;
    border-radius: 50%;
    object-fit: cover;
    background-color: var(--primary-color);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: 500;
}

.avatar-sm {
    width: 2rem;
    height: 2rem;
    font-size: 0.875rem;
}

.avatar-lg {
    width: 3.5rem;
    height: 3.5rem;
    font-size: 1.25rem;
}

/* Alert Component */
.alert {
    padding: 1rem;
    border-radius: 0.5rem;
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.alert i {
    font-size: 1.25rem;
}

.alert-success {
    background-color: rgba(16, 185, 129, 0.1);
    border: 1px solid var(--success-color);
    color: var(--success-color);
}

.alert-error {
    background-color: rgba(239, 68, 68, 0.1);
    border: 1px solid var(--error-color);
    color: var(--error-color);
}

/* Tooltip Component */
.tooltip {
    position: relative;
    display: inline-block;
}

.tooltip:hover::before {
    content: attr(data-tooltip);
    position: absolute;
    bottom: 100%;
    left: 50%;
    transform: translateX(-50%);
    padding: 0.5rem;
    background-color: var(--text-color);
    color: var(--background-color);
    font-size: 0.75rem;
    border-radius: 0.25rem;
    white-space: nowrap;
    z-index: 1000;
}

/* Dropdown Component */
.dropdown {
    position: relative;
    display: inline-block;
}

.dropdown-content {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    min-width: 200px;
    background-color: var(--background-color);
    border: 1px solid var(--border-color);
    border-radius: 0.375rem;
    box-shadow: 0 2px 4px var(--shadow-color);
    z-index: 1000;
}

.dropdown:hover .dropdown-content {
    display: block;
}

.dropdown-item {
    padding: 0.75rem 1rem;
    color: var(--text-color);
    text-decoration: none;
    display: block;
    transition: background-color var(--transition-speed);
}

.dropdown-item:hover {
    background-color: var(--card-bg);
}

/* Progress Bar Component */
.progress {
    width: 100%;
    height: 0.5rem;
    background-color: var(--card-bg);
    border-radius: 9999px;
    overflow: hidden;
}

.progress-bar {
    height: 100%;
    background-color: var(--primary-color);
    transition: width var(--transition-speed);
}

/* Tabs Component */
.tabs {
    display: flex;
    gap: 1rem;
    overflow-x: auto;
    scrollbar-width: none;
    -ms-overflow-style: none;
    margin-bottom: 1.5rem;
}

.tabs::-webkit-scrollbar {
    display: none;
}

.tab {
    padding: 0.75rem 1.5rem;
    border-radius: var(--button-border-radius);
    cursor: pointer;
    white-space: nowrap;
    min-height: 44px;
    min-width: 44px;
}

.tab.active {
    background-color: var(--primary-color);
    color: white;
}

/* Modal Component */
.modal-backdrop {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    display: none;
    justify-content: center;
    align-items: center;
    z-index: 1000;
    backdrop-filter: blur(4px);
}

.modal-backdrop.active {
    display: flex;
}

.modal {
    background-color: var(--background-color);
    border-radius: var(--card-border-radius);
    padding: 2rem;
    max-width: 90%;
    width: 500px;
    max-height: 90vh;
    overflow-y: auto;
    position: relative;
    animation: modalSlideIn 0.3s ease-out;
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
}

.modal-close {
    background: none;
    border: none;
    font-size: 1.5rem;
    color: var(--text-color);
    cursor: pointer;
    padding: 0.5rem;
    min-height: 44px;
    min-width: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.modal-body {
    margin-bottom: 1rem;
}

.modal-footer {
    display: flex;
    justify-content: flex-end;
    gap: 1rem;
    padding-top: 1rem;
    border-top: 1px solid var(--border-color);
}

/* Loading Spinner Component */
.spinner {
    width: 2rem;
    height: 2rem;
    border: 3px solid var(--card-bg);
    border-top-color: var(--primary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* Responsive Utilities */
@media (max-width: 768px) {
    .modal {
        padding: 1.5rem;
    }

    .dropdown-content {
        width: 100%;
        min-width: unset;
    }
}

/* Button Components */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    border-radius: var(--button-border-radius);
    font-weight: 600;
    font-size: 1rem;
    line-height: 1.5;
    text-align: center;
    cursor: pointer;
    transition: all var(--transition-speed) ease;
    border: none;
    min-height: 44px;
    min-width: 44px;
    touch-action: manipulation;
}

.btn i {
    font-size: 1rem;
    transition: transform 0.3s ease;
}

.btn:hover i {
    transform: translateX(2px);
}

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

.btn-primary:hover {
    background-color: var(--primary-color);
    opacity: 0.9;
    transform: translateY(-1px);
}

.btn-secondary {
    background-color: var(--card-bg);
    color: var(--text-color);
    border: 1px solid var(--border-color);
}

.btn-secondary:hover {
    background-color: var(--border-color);
    transform: translateY(-1px);
}

.btn-large {
    padding: 1rem 2rem;
    font-size: 1.125rem;
}

.btn:disabled {
    opacity: 0.7;
    cursor: not-allowed;
    transform: none !important;
}

/* Auth Buttons in Navigation */
.auth-buttons {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.auth-buttons .btn {
    min-width: 100px;
}

.auth-buttons .btn-secondary {
    background-color: var(--primary-color);
    border: 2px solid var(--primary-color);
    color: white;
}

.auth-buttons .btn-secondary:hover {
    background-color: transparent;
    color: var(--primary-color);
}

.auth-buttons .btn-primary {
    background: linear-gradient(45deg, var(--primary-color), #1d4ed8);
}

/* Social Links */
.social-links {
    display: flex;
    gap: 1rem;
    margin-top: 1rem;
}

.social-links a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background-color: var(--card-bg);
    color: var(--primary-color);
    transition: all 0.3s ease;
    text-decoration: none;
}

.social-links a:hover {
    transform: translateY(-2px);
    background-color: var(--primary-color);
    color: white;
}

/* Theme Toggle Button */
.theme-toggle {
    background: none;
    border: none;
    color: var(--text-color);
    cursor: pointer;
    padding: 0.5rem;
    border-radius: 50%;
    transition: all 0.3s ease;
}

.theme-toggle:hover {
    background-color: var(--card-bg);
    transform: rotate(15deg);
}

/* Mobile Menu Button */
.mobile-menu-btn {
    display: none;
    flex-direction: column;
    gap: 6px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
}

.mobile-menu-btn span {
    display: block;
    width: 24px;
    height: 2px;
    background-color: var(--text-color);
    transition: all 0.3s ease;
}

/* Responsive Design */
@media (max-width: 768px) {
    .mobile-menu-btn {
        display: flex;
    }

    .nav-links {
        display: none;
        position: absolute;
        top: var(--header-height);
        left: 0;
        right: 0;
        background-color: var(--background-color);
        padding: 1rem;
        box-shadow: 0 4px 6px var(--shadow-color);
        flex-direction: column;
        align-items: stretch;
    }

    .nav-links.active {
        display: flex;
    }

    .auth-buttons {
        flex-direction: column;
        width: 100%;
    }

    .auth-buttons .btn {
        width: 100%;
        text-align: center;
    }
}

/* Logo Component */
.logo {
    display: flex;
    align-items: center;
}

.logo-img {
    height: 180px;
    width: auto;
    transition: transform var(--transition-speed);
}

.logo-img:hover {
    transform: scale(1.05);
}

.footer-logo {
    height: 200px;
    width: auto;
    margin-bottom: 1.5rem;
}

/* Form Logo */
.form-logo {
    height: 150px;
    width: auto;
    margin-bottom: 1rem;
}

/* Forms */
.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: var(--text-color);
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 2px solid var(--border-color);
    border-radius: 0.5rem;
    background-color: var(--input-bg);
    color: var(--text-color);
    font-size: 1rem;
    transition: all var(--transition-speed) ease;
    min-height: 44px;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.1);
}

/* Responsive Grid */
.grid-container {
    display: grid;
    gap: 1.5rem;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
}

/* Responsive Images */
.responsive-img {
    max-width: 100%;
    height: auto;
    display: block;
}

/* Responsive Tables */
.table-container {
    width: 100%;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}

table {
    width: 100%;
    border-collapse: collapse;
    min-width: 600px;
}

/* Animations */
@keyframes modalSlideIn {
    from {
        opacity: 0;
        transform: translateY(-20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Media Queries */
@media (max-width: 768px) {
    .btn {
        padding: 0.625rem 1.25rem;
    }

    .btn-large {
        padding: 0.875rem 1.75rem;
    }

    .modal {
        padding: 1.5rem;
    }

    .form-group {
        margin-bottom: 1.25rem;
    }
}

@media (max-width: 480px) {
    .btn {
        width: 100%;
    }

    .tabs {
        flex-wrap: wrap;
    }

    .tab {
        width: 100%;
        text-align: center;
    }

    .modal {
        padding: 1rem;
    }
}

/* Touch Device Optimizations */
@media (hover: none) {
    .btn:hover {
        transform: none;
    }

    .card:hover {
        transform: none;
    }
}

/* High Contrast Mode */
@media (prefers-contrast: high) {
    .btn-primary {
        background-color: black;
        color: white;
        border: 2px solid black;
    }

    .btn-secondary {
        background-color: white;
        color: black;
        border: 2px solid black;
    }
}

/* Reduced Motion */
@media (prefers-reduced-motion: reduce) {
    .btn,
    .card,
    .modal {
        transition: none;
    }

    .loading {
        animation: none;
    }
}