/* Reset und Basis-Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    overflow-x: hidden;
}

.hidden {
    display: none !important;
}

/* Intro Animation */
.intro-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 9999;
    animation: fadeOut 0.5s ease-in-out 2s forwards;
}

.intro-content {
    text-align: center;
    color: white;
}

.logo-animation h1 {
    font-size: 4rem;
    font-weight: 300;
    letter-spacing: 0.2em;
    margin-bottom: 2rem;
    animation: logoGlow 2s ease-in-out;
}

.loading-bar {
    width: 200px;
    height: 3px;
    background: rgba(255, 255, 255, 0.3);
    border-radius: 2px;
    overflow: hidden;
    margin: 0 auto;
}

.loading-bar::after {
    content: '';
    display: block;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.8), transparent);
    animation: loading 2s ease-in-out;
}

@keyframes logoGlow {
    0%, 100% { text-shadow: 0 0 20px rgba(255, 255, 255, 0.5); }
    50% { text-shadow: 0 0 40px rgba(255, 255, 255, 0.8), 0 0 60px rgba(255, 255, 255, 0.6); }
}

@keyframes loading {
    0% { transform: translateX(-100%); }
    100% { transform: translateX(100%); }
}

@keyframes fadeOut {
    to {
        opacity: 0;
        visibility: hidden;
    }
}

/* Main Container */
.main-container {
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    position: relative;
    animation: fadeIn 0.5s ease-in-out 2.5s both;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Login Container */
.login-container {
    position: relative;
    z-index: 10;
}

.login-card {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    border-radius: 20px;
    padding: 3rem;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    min-width: 400px;
    animation: slideUp 0.6s ease-out 2.8s both;
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.login-header {
    text-align: center;
    margin-bottom: 2rem;
}

.login-header h2 {
    color: #333;
    font-size: 2rem;
    font-weight: 300;
    margin-bottom: 0.5rem;
}

.login-header p {
    color: #666;
    font-size: 1rem;
}

/* Form Styles */
.login-form, .register-form {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.register-form .input-group {
    margin-bottom: 1rem;
}

.input-group {
    position: relative;
}

.input-group input, .input-group textarea {
    width: 100%;
    padding: 1rem 0;
    font-size: 1rem;
    border: none;
    background: transparent;
    outline: none;
    color: #333;
    resize: none;
    font-family: inherit;
}

.input-group textarea {
    min-height: 80px;
    padding-top: 1.5rem;
}

.input-group label {
    position: absolute;
    top: 1rem;
    left: 0;
    font-size: 1rem;
    color: #999;
    pointer-events: none;
    transition: all 0.3s ease;
}

.input-group input:focus + label,
.input-group input:valid + label,
.input-group textarea:focus + label,
.input-group textarea:valid + label,
.input-group.focused label {
    top: -0.5rem;
    font-size: 0.8rem;
    color: #667eea;
}

.input-line {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 2px;
    background: #ddd;
}

.input-line::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, #667eea, #764ba2);
    transition: all 0.3s ease;
    transform: translateX(-50%);
}

.input-group input:focus ~ .input-line::after,
.input-group textarea:focus ~ .input-line::after {
    width: 100%;
}

/* Button Styles */
.login-btn, .register-btn {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border: none;
    padding: 1rem 2rem;
    border-radius: 50px;
    font-size: 1rem;
    cursor: pointer;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
    margin-top: 1rem;
    width: 100%;
}

.login-btn:hover, .register-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(102, 126, 234, 0.3);
}

.login-btn:active, .register-btn:active {
    transform: translateY(0);
}

.btn-loader {
    width: 20px;
    height: 20px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-top: 2px solid white;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Error Message */
.error-message {
    background: #ff4757;
    color: white;
    padding: 1rem;
    border-radius: 10px;
    margin-top: 1rem;
    text-align: center;
    animation: shake 0.5s ease-in-out;
}

@keyframes shake {
    0%, 100% { transform: translateX(0); }
    25% { transform: translateX(-5px); }
    75% { transform: translateX(5px); }
}

/* Register Card Styles */
.register-card {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    border-radius: 20px;
    padding: 3rem;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    min-width: 450px;
    animation: slideUp 0.6s ease-out 2.8s both;
    display: none;
}

/* Success Message */
.success-message {
    background: #2ed573;
    color: white;
    padding: 1rem;
    border-radius: 10px;
    margin-top: 1rem;
    text-align: center;
    animation: slideDown 0.5s ease-in-out;
}

/* Form Toggle Styles */
.form-footer {
    text-align: center;
    margin-top: 2rem;
    padding-top: 1rem;
    border-top: 1px solid rgba(0, 0, 0, 0.1);
}

.form-footer p {
    color: #666;
    margin-bottom: 0.5rem;
}

.toggle-btn {
    background: none;
    border: none;
    color: #667eea;
    cursor: pointer;
    font-weight: 500;
    text-decoration: underline;
    transition: color 0.3s ease;
}

.toggle-btn:hover {
    color: #764ba2;
}

/* Background Animation */
.bg-animation {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 1;
}

.floating-shapes {
    position: relative;
    width: 100%;
    height: 100%;
}

.shape {
    position: absolute;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.1);
    animation: float 6s ease-in-out infinite;
}

.shape-1 {
    width: 80px;
    height: 80px;
    top: 20%;
    left: 10%;
    animation-delay: 0s;
}

.shape-2 {
    width: 120px;
    height: 120px;
    top: 60%;
    right: 10%;
    animation-delay: 2s;
}

.shape-3 {
    width: 60px;
    height: 60px;
    bottom: 20%;
    left: 20%;
    animation-delay: 4s;
}

.shape-4 {
    width: 100px;
    height: 100px;
    top: 10%;
    right: 30%;
    animation-delay: 1s;
}

@keyframes float {
    0%, 100% {
        transform: translateY(0px) rotate(0deg);
        opacity: 0.7;
    }
    50% {
        transform: translateY(-20px) rotate(180deg);
        opacity: 1;
    }
}

/* Dashboard Styles */
.dashboard-container {
    min-height: 100vh;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    animation: fadeIn 0.5s ease-in-out;
}

.dashboard-header {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.2);
    padding: 1rem 0;
}

.header-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo h1 {
    color: white;
    font-size: 2rem;
    font-weight: 300;
    letter-spacing: 0.1em;
}

.user-info {
    display: flex;
    align-items: center;
    gap: 1rem;
    color: white;
}

.logout-btn {
    background: rgba(255, 255, 255, 0.2);
    color: white;
    border: 1px solid rgba(255, 255, 255, 0.3);
    padding: 0.5rem 1rem;
    border-radius: 25px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.logout-btn:hover {
    background: rgba(255, 255, 255, 0.3);
    transform: translateY(-1px);
}

.dashboard-main {
    max-width: 1200px;
    margin: 0 auto;
    padding: 3rem 2rem;
}

.welcome-section {
    text-align: center;
    margin-bottom: 3rem;
    color: white;
}

.welcome-section h2 {
    font-size: 2.5rem;
    font-weight: 300;
    margin-bottom: 1rem;
    animation: slideDown 0.6s ease-out;
}

.welcome-section p {
    font-size: 1.2rem;
    opacity: 0.9;
    animation: slideDown 0.6s ease-out 0.2s both;
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Tools Grid */
.tools-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.tool-card {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    border-radius: 20px;
    padding: 2rem;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s ease;
    border: 1px solid rgba(255, 255, 255, 0.2);
    animation: cardSlideUp 0.6s ease-out both;
}

.tool-card:nth-child(1) { animation-delay: 0.1s; }
.tool-card:nth-child(2) { animation-delay: 0.2s; }
.tool-card:nth-child(3) { animation-delay: 0.3s; }
.tool-card:nth-child(4) { animation-delay: 0.4s; }
.tool-card:nth-child(5) { animation-delay: 0.5s; }
.tool-card:nth-child(6) { animation-delay: 0.6s; }

@keyframes cardSlideUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.tool-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
}

.tool-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.tool-card h3 {
    color: #333;
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
    font-weight: 400;
}

.tool-card p {
    color: #666;
    margin-bottom: 1rem;
    line-height: 1.5;
}

.tool-status {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 0.5rem 1rem;
    border-radius: 25px;
    font-size: 0.9rem;
    display: inline-block;
}

/* Responsive Design */
@media (max-width: 768px) {
    .login-card, .register-card {
        min-width: 300px;
        padding: 2rem;
        margin: 1rem;
    }
    
    .logo-animation h1 {
        font-size: 3rem;
    }
    
    .header-content {
        padding: 0 1rem;
        flex-direction: column;
        gap: 1rem;
    }
    
    .dashboard-main {
        padding: 2rem 1rem;
    }
    
    .welcome-section h2 {
        font-size: 2rem;
    }
    
    .tools-grid {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
    
    .tool-card {
        padding: 1.5rem;
    }
}

/* Header Navigation */
.header {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.2);
    position: sticky;
    top: 0;
    z-index: 100;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

.nav {
    display: flex;
    align-items: center;
    gap: 2rem;
}

.nav-link {
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    padding: 0.5rem 1rem;
    border-radius: 25px;
    transition: all 0.3s ease;
}

.nav-link:hover,
.nav-link.active {
    color: white;
    background: rgba(255, 255, 255, 0.2);
}

.user-menu {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-left: auto;
}

.user-name {
    color: white;
    font-weight: 500;
}

/* Main Content */
.main-content {
    min-height: calc(100vh - 80px);
    padding: 2rem 0;
}

/* Breadcrumb */
.breadcrumb {
    margin-bottom: 2rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: rgba(255, 255, 255, 0.8);
}

.breadcrumb a {
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    transition: color 0.3s ease;
}

.breadcrumb a:hover {
    color: white;
}

.breadcrumb .separator {
    color: rgba(255, 255, 255, 0.5);
}

.breadcrumb .current {
    color: white;
    font-weight: 500;
}

/* Groups Header */
.groups-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
    margin-bottom: 3rem;
    gap: 2rem;
}

.groups-title h2 {
    color: white;
    font-size: 2.5rem;
    font-weight: 300;
    margin-bottom: 0.5rem;
}

.groups-subtitle {
    color: rgba(255, 255, 255, 0.8);
    font-size: 1.1rem;
}

.create-group-btn {
    white-space: nowrap;
}

/* Groups Filters */
.groups-filters {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(20px);
    border-radius: 20px;
    padding: 2rem;
    margin-bottom: 3rem;
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.search-box {
    position: relative;
    margin-bottom: 1.5rem;
}

.search-input {
    width: 100%;
    padding: 1rem 3rem 1rem 1rem;
    border: none;
    background: rgba(255, 255, 255, 0.9);
    border-radius: 50px;
    font-size: 1rem;
    outline: none;
    transition: all 0.3s ease;
}

.search-input:focus {
    background: white;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.search-icon {
    position: absolute;
    right: 1rem;
    top: 50%;
    transform: translateY(-50%);
    color: #666;
    font-size: 1.2rem;
}

.filter-tabs {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.filter-tab {
    background: rgba(255, 255, 255, 0.2);
    color: rgba(255, 255, 255, 0.8);
    border: none;
    padding: 0.75rem 1.5rem;
    border-radius: 25px;
    cursor: pointer;
    transition: all 0.3s ease;
    font-size: 0.9rem;
}

.filter-tab:hover {
    background: rgba(255, 255, 255, 0.3);
    color: white;
}

.filter-tab.active {
    background: rgba(255, 255, 255, 0.9);
    color: #333;
    font-weight: 500;
}

/* Groups Grid */
.groups-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 2rem;
    margin-bottom: 3rem;
}

.group-card {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    border-radius: 20px;
    padding: 2rem;
    border: 1px solid rgba(255, 255, 255, 0.2);
    transition: all 0.3s ease;
    cursor: pointer;
    animation: cardSlideUp 0.6s ease-out both;
}

.group-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
}

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

.group-role {
    font-size: 1.5rem;
    padding: 0.5rem;
    background: rgba(102, 126, 234, 0.1);
    border-radius: 50%;
    width: 3rem;
    height: 3rem;
    display: flex;
    align-items: center;
    justify-content: center;
}

.group-status {
    padding: 0.25rem 0.75rem;
    border-radius: 15px;
    font-size: 0.8rem;
    font-weight: 500;
}

.status-active {
    background: #4CAF50;
    color: white;
}

.status-completed {
    background: #2196F3;
    color: white;
}

.status-archived {
    background: #9e9e9e;
    color: white;
}

.group-card-content {
    margin-bottom: 1.5rem;
}

.group-name {
    color: #333;
    font-size: 1.3rem;
    font-weight: 500;
    margin-bottom: 0.5rem;
    line-height: 1.3;
}

.group-topic {
    color: #667eea;
    font-size: 0.9rem;
    font-weight: 500;
    margin-bottom: 0.75rem;
}

.group-description {
    color: #666;
    font-size: 0.9rem;
    line-height: 1.4;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.group-card-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
    padding-top: 1rem;
    border-top: 1px solid rgba(0, 0, 0, 0.1);
}

.group-members,
.group-activity {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: #666;
    font-size: 0.85rem;
}

.members-icon,
.activity-icon {
    font-size: 1rem;
}

.group-card-actions {
    display: flex;
    gap: 1rem;
}

/* Button Styles */
.btn {
    border: none;
    padding: 0.75rem 1.5rem;
    border-radius: 25px;
    font-size: 0.9rem;
    cursor: pointer;
    transition: all 0.3s ease;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    text-decoration: none;
    font-weight: 500;
}

.btn-primary {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(102, 126, 234, 0.3);
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.2);
    color: #333;
    border: 1px solid rgba(0, 0, 0, 0.1);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.3);
    transform: translateY(-1px);
}

.btn-sm {
    padding: 0.5rem 1rem;
    font-size: 0.8rem;
}

.btn-icon {
    font-size: 1rem;
}

/* Loading States */
.loading-placeholder {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 4rem 2rem;
    color: rgba(255, 255, 255, 0.8);
}

.loading-spinner {
    width: 40px;
    height: 40px;
    border: 3px solid rgba(255, 255, 255, 0.3);
    border-top: 3px solid white;
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin-bottom: 1rem;
}

/* Empty State */
.empty-state {
    text-align: center;
    padding: 4rem 2rem;
    color: rgba(255, 255, 255, 0.8);
}

.empty-icon {
    font-size: 4rem;
    margin-bottom: 1rem;
    opacity: 0.7;
}

.empty-state h3 {
    color: white;
    font-size: 1.5rem;
    font-weight: 300;
    margin-bottom: 1rem;
}

.empty-state p {
    font-size: 1rem;
    margin-bottom: 2rem;
    opacity: 0.8;
}

/* Modal Styles */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    display: none;
    justify-content: center;
    align-items: center;
    z-index: 1000;
    backdrop-filter: blur(5px);
}

.modal-content {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    border-radius: 20px;
    max-width: 500px;
    width: 90%;
    max-height: 90vh;
    overflow-y: auto;
    border: 1px solid rgba(255, 255, 255, 0.2);
    animation: modalSlideIn 0.3s ease-out;
}

@keyframes modalSlideIn {
    from {
        opacity: 0;
        transform: translateY(-20px) scale(0.95);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 2rem 2rem 1rem;
    border-bottom: 1px solid rgba(0, 0, 0, 0.1);
}

.modal-header h3 {
    color: #333;
    font-size: 1.5rem;
    font-weight: 400;
    margin: 0;
}

.modal-close {
    background: none;
    border: none;
    font-size: 2rem;
    color: #999;
    cursor: pointer;
    padding: 0;
    width: 2rem;
    height: 2rem;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    transition: all 0.3s ease;
}

.modal-close:hover {
    background: rgba(0, 0, 0, 0.1);
    color: #333;
}

.modal-body {
    padding: 2rem;
}

.modal-actions {
    display: flex;
    gap: 1rem;
    justify-content: flex-end;
    margin-top: 2rem;
    padding-top: 1rem;
    border-top: 1px solid rgba(0, 0, 0, 0.1);
}

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

.form-group label {
    display: block;
    color: #333;
    font-weight: 500;
    margin-bottom: 0.5rem;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid #ddd;
    border-radius: 10px;
    font-size: 1rem;
    transition: all 0.3s ease;
    background: white;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: #667eea;
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

.form-group textarea {
    resize: vertical;
    min-height: 80px;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

/* Join Group Preview */
.join-group-preview {
    background: rgba(102, 126, 234, 0.05);
    border-radius: 10px;
    padding: 1.5rem;
    margin-bottom: 1rem;
}

.join-group-preview h4 {
    color: #333;
    font-size: 1.2rem;
    margin-bottom: 1rem;
}

.join-group-preview p {
    color: #666;
    margin-bottom: 0.5rem;
    line-height: 1.4;
}

.join-group-preview strong {
    color: #333;
}

/* Responsive Design */
@media (max-width: 768px) {
    .groups-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 1rem;
    }
    
    .groups-title h2 {
        font-size: 2rem;
    }
    
    .create-group-btn {
        width: 100%;
        justify-content: center;
    }
    
    .groups-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    
    .group-card {
        padding: 1.5rem;
    }
    
    .filter-tabs {
        justify-content: center;
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
    
    .modal-content {
        width: 95%;
        margin: 1rem;
    }
    
    .modal-header,
    .modal-body {
        padding: 1.5rem;
    }
    
    .modal-actions {
        flex-direction: column;
    }
    
    .nav {
        flex-direction: column;
        gap: 1rem;
    }
    
    .user-menu {
        margin-left: 0;
    }
}

@media (max-width: 480px) {
    .login-card {
        min-width: 280px;
        padding: 1.5rem;
    }
    
    .logo-animation h1 {
        font-size: 2.5rem;
    }
    
    .welcome-section h2 {
        font-size: 1.8rem;
    }
    
    .groups-title h2 {
        font-size: 1.8rem;
    }
    
    .group-card {
        padding: 1rem;
    }
    
    .groups-filters {
        padding: 1.5rem;
    }
    
    .container {
        padding: 0 1rem;
    }
}