/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

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

/* Page Management */
.page {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    opacity: 0;
    visibility: hidden;
    transition: all 0.6s cubic-bezier(0.4, 0, 0.2, 1);
    transform: translateX(100%);
}

.page.active {
    opacity: 1;
    visibility: visible;
    transform: translateX(0);
}

.page.prev {
    transform: translateX(-100%);
}

/* Landing Page Styles */
#landing-page {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

.landing-container {
    text-align: center;
    z-index: 2;
    position: relative;
}

.logo-container {
    animation: fadeInUp 1s ease-out;
}

.app-name {
    font-size: 4rem;
    font-weight: 700;
    color: white;
    margin-bottom: 1rem;
    text-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
    animation: bounceIn 1.2s ease-out 0.5s both;
}

.tagline {
    font-size: 1.2rem;
    color: rgba(255, 255, 255, 0.9);
    font-weight: 300;
    animation: fadeInUp 1s ease-out 1s both;
}

/* Floating Elements */
.floating-elements {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
}

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

.circle-1 {
    width: 100px;
    height: 100px;
    top: 20%;
    left: 10%;
    animation-delay: 0s;
}

.circle-2 {
    width: 150px;
    height: 150px;
    top: 60%;
    right: 15%;
    animation-delay: 2s;
}

.circle-3 {
    width: 80px;
    height: 80px;
    bottom: 20%;
    left: 20%;
    animation-delay: 4s;
}

/* Login Page Styles */
#login-page {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2rem;
}

.login-container {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-radius: 20px;
    padding: 3rem;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
    max-width: 500px;
    width: 100%;
    animation: slideInUp 0.8s ease-out;
}

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

.login-header h2 {
    color: #333;
    font-size: 2rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

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

.login-options {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    margin-bottom: 2rem;
}

.option-btn {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem 1.5rem;
    border: none;
    border-radius: 12px;
    font-size: 1.1rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
}

.option-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 25px rgba(102, 126, 234, 0.3);
}

.option-btn i {
    font-size: 1.2rem;
}

/* Mentor Button Styles */
.mentor-section {
    position: relative;
}

.mentor-button {
    width: 100%;
    background: linear-gradient(135deg, #ff6b6b 0%, #ee5a24 100%);
    border: none;
    border-radius: 16px;
    padding: 0;
    cursor: pointer;
    transition: all 0.3s ease;
    overflow: hidden;
    position: relative;
}

.mentor-button:hover {
    transform: translateY(-3px);
    box-shadow: 0 15px 35px rgba(255, 107, 107, 0.4);
}

.mentor-button-content {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1.5rem;
    color: white;
    text-align: left;
}

.mentor-icon {
    width: 60px;
    height: 60px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.8rem;
    backdrop-filter: blur(10px);
    border: 2px solid rgba(255, 255, 255, 0.3);
}

.mentor-text h4 {
    margin: 0 0 0.25rem 0;
    font-size: 1.3rem;
    font-weight: 600;
}

.mentor-slogan {
    margin: 0;
    font-size: 0.9rem;
    opacity: 0.9;
    font-weight: 400;
    font-style: italic;
}

.mentor-button::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.6s ease;
}

.mentor-button:hover::before {
    left: 100%;
}

.login-form, .mentor-info {
    display: none;
    animation: fadeInUp 0.5s ease-out;
}

.login-form.active, .mentor-info.active {
    display: block;
}

.login-form h3, .mentor-info h3 {
    color: #333;
    margin-bottom: 1.5rem;
    text-align: center;
}

.input-group {
    position: relative;
    margin-bottom: 1.5rem;
}

.input-group i {
    position: absolute;
    left: 1rem;
    top: 50%;
    transform: translateY(-50%);
    color: #666;
    z-index: 1;
}

.input-group input {
    width: 100%;
    padding: 1rem 1rem 1rem 3rem;
    border: 2px solid #e1e5e9;
    border-radius: 12px;
    font-size: 1rem;
    transition: all 0.3s ease;
    background: white;
}

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

.login-btn {
    width: 100%;
    padding: 1rem;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border: none;
    border-radius: 12px;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    margin-bottom: 1rem;
}

.login-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 25px rgba(102, 126, 234, 0.3);
}

.signup-link {
    text-align: center;
    color: #666;
}

.signup-link a {
    color: #667eea;
    text-decoration: none;
    font-weight: 500;
}

.signup-link a:hover {
    text-decoration: underline;
}

/* Mentor Info Styles */
.mentor-benefits {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    margin: 1.5rem 0;
}

.benefit {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem;
    background: rgba(102, 126, 234, 0.1);
    border-radius: 12px;
}

.benefit i {
    color: #667eea;
    font-size: 1.2rem;
}

.mentor-apply-btn {
    width: 100%;
    padding: 1rem;
    background: linear-gradient(135deg, #ff6b6b 0%, #ee5a24 100%);
    color: white;
    border: none;
    border-radius: 12px;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
}

.mentor-apply-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 25px rgba(255, 107, 107, 0.3);
}

/* Signup Page Styles */
#signup-page {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2rem;
}

.signup-container {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-radius: 20px;
    padding: 3rem;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
    max-width: 500px;
    width: 100%;
    animation: slideInUp 0.8s ease-out;
}

.signup-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 2rem;
}

.back-btn {
    background: none;
    border: none;
    font-size: 1.5rem;
    color: #667eea;
    cursor: pointer;
    padding: 0.5rem;
    border-radius: 50%;
    transition: all 0.3s ease;
}

.back-btn:hover {
    background: rgba(102, 126, 234, 0.1);
    transform: scale(1.1);
}

.signup-header h2 {
    color: #333;
    font-size: 1.8rem;
    font-weight: 600;
}

.signup-header p {
    color: #666;
    font-size: 0.9rem;
}

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

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

.signup-btn {
    width: 100%;
    padding: 1rem;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border: none;
    border-radius: 12px;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    margin-top: 1rem;
}

.signup-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 25px rgba(102, 126, 234, 0.3);
}

.error-message {
    color: #e74c3c;
    font-size: 0.9rem;
    margin-top: 0.5rem;
    display: none;
}

.error-message.show {
    display: block;
    animation: shake 0.5s ease-in-out;
}

/* Success Page Styles */
#success-page {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2rem;
}

.success-container {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-radius: 20px;
    padding: 3rem;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
    max-width: 400px;
    width: 100%;
    text-align: center;
    animation: slideInUp 0.8s ease-out;
}

.success-icon {
    margin-bottom: 1.5rem;
}

.success-icon i {
    font-size: 4rem;
    color: #27ae60;
    animation: bounceIn 1s ease-out;
}

.success-container h2 {
    color: #333;
    font-size: 1.8rem;
    font-weight: 600;
    margin-bottom: 1rem;
}

.success-container p {
    color: #666;
    margin-bottom: 2rem;
}

.login-redirect-btn {
    padding: 1rem 2rem;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border: none;
    border-radius: 12px;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
}

.login-redirect-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 25px rgba(102, 126, 234, 0.3);
}

/* Animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes bounceIn {
    0% {
        opacity: 0;
        transform: scale(0.3);
    }
    50% {
        opacity: 1;
        transform: scale(1.05);
    }
    70% {
        transform: scale(0.9);
    }
    100% {
        opacity: 1;
        transform: scale(1);
    }
}

@keyframes slideInUp {
    from {
        opacity: 0;
        transform: translateY(50px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes float {
    0%, 100% {
        transform: translateY(0px);
    }
    50% {
        transform: translateY(-20px);
    }
}

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

/* Dashboard Styles */
#dashboard-page {
    background: #f8f9fa;
    display: block;
    height: 100vh;
    overflow: hidden;
}

.dashboard-container {
    height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Dashboard Header */
.dashboard-header {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    z-index: 100;
}

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

.dashboard-subtitle {
    font-size: 0.9rem;
    opacity: 0.9;
    font-weight: 300;
}

.header-right {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.user-info {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    background: rgba(255, 255, 255, 0.1);
    padding: 0.5rem 1rem;
    border-radius: 25px;
    backdrop-filter: blur(10px);
}

.user-avatar {
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
}

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

.user-name {
    font-weight: 600;
    font-size: 0.9rem;
}

.user-status {
    font-size: 0.8rem;
    opacity: 0.8;
}

.logout-btn {
    background: rgba(255, 255, 255, 0.1);
    border: none;
    color: white;
    padding: 0.75rem;
    border-radius: 50%;
    cursor: pointer;
    transition: all 0.3s ease;
    backdrop-filter: blur(10px);
}

.logout-btn:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: scale(1.1);
}

/* Dashboard Main Layout */
.dashboard-main {
    display: flex;
    flex: 1;
    overflow: hidden;
}

/* Sidebar */
.dashboard-sidebar {
    width: 250px;
    background: white;
    border-right: 1px solid #e1e5e9;
    overflow-y: auto;
    box-shadow: 2px 0 10px rgba(0, 0, 0, 0.05);
}

.sidebar-nav {
    padding: 1rem 0;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem 1.5rem;
    color: #666;
    text-decoration: none;
    transition: all 0.3s ease;
    border-left: 3px solid transparent;
}

.nav-item:hover {
    background: rgba(102, 126, 234, 0.1);
    color: #667eea;
}

.nav-item.active {
    background: rgba(102, 126, 234, 0.1);
    color: #667eea;
    border-left-color: #667eea;
    font-weight: 600;
}

.nav-item i {
    font-size: 1.2rem;
    width: 20px;
}

/* Content Area */
.dashboard-content {
    flex: 1;
    overflow-y: auto;
    background: #f8f9fa;
}

.content-section {
    display: none;
    padding: 2rem;
    animation: fadeInUp 0.5s ease-out;
}

.content-section.active {
    display: block;
}

.section-header {
    margin-bottom: 2rem;
}

.section-header h2 {
    color: #333;
    font-size: 1.8rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

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

.section-controls {
    display: flex;
    gap: 1rem;
    margin-top: 1rem;
}

.search-box {
    position: relative;
    flex: 1;
    max-width: 300px;
}

.search-box i {
    position: absolute;
    left: 1rem;
    top: 50%;
    transform: translateY(-50%);
    color: #666;
}

.search-box input {
    width: 100%;
    padding: 0.75rem 1rem 0.75rem 2.5rem;
    border: 2px solid #e1e5e9;
    border-radius: 25px;
    font-size: 0.9rem;
    transition: all 0.3s ease;
}

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

.filter-select {
    padding: 0.75rem 1rem;
    border: 2px solid #e1e5e9;
    border-radius: 25px;
    background: white;
    font-size: 0.9rem;
    cursor: pointer;
    transition: all 0.3s ease;
}

.filter-select:focus {
    outline: none;
    border-color: #667eea;
}

/* Doubts Feed */
.doubts-feed {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.doubt-card {
    background: white;
    border-radius: 12px;
    padding: 1.5rem;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    transition: all 0.3s ease;
    border-left: 4px solid #667eea;
}

.doubt-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
}

.doubt-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 1rem;
}

.doubt-title {
    font-size: 1.2rem;
    font-weight: 600;
    color: #333;
    margin-bottom: 0.5rem;
}

.doubt-meta {
    display: flex;
    gap: 1rem;
    font-size: 0.9rem;
    color: #666;
}

.doubt-category {
    background: rgba(102, 126, 234, 0.1);
    color: #667eea;
    padding: 0.25rem 0.75rem;
    border-radius: 15px;
    font-size: 0.8rem;
    font-weight: 500;
}

.doubt-description {
    color: #555;
    line-height: 1.6;
    margin-bottom: 1rem;
}

.doubt-actions {
    display: flex;
    gap: 1rem;
    align-items: center;
}

.action-btn {
    background: none;
    border: none;
    color: #666;
    cursor: pointer;
    padding: 0.5rem;
    border-radius: 6px;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.action-btn:hover {
    background: rgba(102, 126, 234, 0.1);
    color: #667eea;
}

/* Ask Doubt Form */
.ask-doubt-form {
    background: white;
    border-radius: 12px;
    padding: 2rem;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    max-width: 600px;
}

.ask-doubt-form .form-group {
    margin-bottom: 1.5rem;
}

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

.ask-doubt-form input,
.ask-doubt-form select,
.ask-doubt-form textarea {
    width: 100%;
    padding: 0.75rem;
    border: 2px solid #e1e5e9;
    border-radius: 8px;
    font-size: 1rem;
    transition: all 0.3s ease;
    font-family: inherit;
}

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

.ask-doubt-form textarea {
    resize: vertical;
    min-height: 120px;
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    cursor: pointer;
    font-weight: 500;
}

.checkbox-label input[type="checkbox"] {
    width: auto;
    margin: 0;
}

.checkmark {
    width: 20px;
    height: 20px;
    border: 2px solid #e1e5e9;
    border-radius: 4px;
    position: relative;
    transition: all 0.3s ease;
}

.checkbox-label input[type="checkbox"]:checked + .checkmark {
    background: #667eea;
    border-color: #667eea;
}

.checkbox-label input[type="checkbox"]:checked + .checkmark::after {
    content: '✓';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: white;
    font-size: 0.8rem;
    font-weight: bold;
}

.form-actions {
    display: flex;
    gap: 1rem;
    justify-content: flex-end;
    margin-top: 2rem;
}

.btn-primary, .btn-secondary {
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
}

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

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(102, 126, 234, 0.3);
}

.btn-secondary {
    background: #f8f9fa;
    color: #666;
    border: 2px solid #e1e5e9;
}

.btn-secondary:hover {
    background: #e9ecef;
    border-color: #dee2e6;
}

/* Profile Section */
.profile-content {
    background: white;
    border-radius: 12px;
    padding: 2rem;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
}

.profile-info {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    margin-bottom: 2rem;
    padding-bottom: 2rem;
    border-bottom: 1px solid #e1e5e9;
}

.profile-avatar {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 2rem;
}

.profile-details h3 {
    color: #333;
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.profile-details p {
    color: #666;
    margin-bottom: 0.25rem;
}

.profile-stats {
    display: flex;
    gap: 2rem;
    margin-bottom: 2rem;
    padding-bottom: 2rem;
    border-bottom: 1px solid #e1e5e9;
}

.stat-item {
    text-align: center;
}

.stat-number {
    display: block;
    font-size: 2rem;
    font-weight: 700;
    color: #667eea;
    margin-bottom: 0.5rem;
}

.stat-label {
    color: #666;
    font-size: 0.9rem;
}

.profile-settings h4 {
    color: #333;
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 1rem;
}

.setting-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 0;
    border-bottom: 1px solid #f1f3f4;
}

.setting-item:last-child {
    border-bottom: none;
}

.toggle-switch {
    position: relative;
    display: inline-block;
    width: 50px;
    height: 24px;
}

.toggle-switch input {
    opacity: 0;
    width: 0;
    height: 0;
}

.slider {
    position: absolute;
    cursor: pointer;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: #ccc;
    transition: 0.3s;
    border-radius: 24px;
}

.slider:before {
    position: absolute;
    content: "";
    height: 18px;
    width: 18px;
    left: 3px;
    bottom: 3px;
    background-color: white;
    transition: 0.3s;
    border-radius: 50%;
}

input:checked + .slider {
    background-color: #667eea;
}

input:checked + .slider:before {
    transform: translateX(26px);
}

/* Responsive Design */
@media (max-width: 768px) {
    .app-name {
        font-size: 3rem;
    }
    
    .login-container, .signup-container, .success-container {
        margin: 1rem;
        padding: 2rem;
    }
    
    .signup-header {
        flex-direction: column;
        text-align: center;
        gap: 0.5rem;
    }
    
    .back-btn {
        align-self: flex-start;
    }
    
    /* Dashboard Responsive */
    .dashboard-header {
        padding: 1rem;
    }
    
    .header-left h1 {
        font-size: 1.5rem;
    }
    
    .dashboard-subtitle {
        display: none;
    }
    
    .user-info {
        padding: 0.5rem;
    }
    
    .user-details {
        display: none;
    }
    
    .dashboard-sidebar {
        width: 200px;
    }
    
    .nav-item span {
        display: none;
    }
    
    .nav-item {
        justify-content: center;
        padding: 1rem;
    }
    
    .content-section {
        padding: 1rem;
    }
    
    .section-controls {
        flex-direction: column;
        gap: 0.5rem;
    }
    
    .search-box {
        max-width: none;
    }
    
    .profile-stats {
        flex-direction: column;
        gap: 1rem;
    }
    
    .form-actions {
        flex-direction: column;
    }
    
    /* Mentor Button Responsive */
    .mentor-button-content {
        padding: 1rem;
        gap: 0.75rem;
    }
    
    .mentor-icon {
        width: 50px;
        height: 50px;
        font-size: 1.5rem;
    }
    
    .mentor-text h4 {
        font-size: 1.1rem;
    }
    
    .mentor-slogan {
        font-size: 0.8rem;
    }
}

@media (max-width: 480px) {
    .app-name {
        font-size: 2.5rem;
    }
    
    .tagline {
        font-size: 1rem;
    }
    
    .login-container, .signup-container, .success-container {
        padding: 1.5rem;
    }
    
    /* Dashboard Mobile */
    .dashboard-sidebar {
        position: fixed;
        left: -250px;
        top: 70px;
        height: calc(100vh - 70px);
        z-index: 1000;
        transition: left 0.3s ease;
    }
    
    .dashboard-sidebar.open {
        left: 0;
    }
    
    .dashboard-content {
        margin-left: 0;
    }
    
    .mobile-menu-btn {
        display: block;
        background: none;
        border: none;
        color: white;
        font-size: 1.5rem;
        cursor: pointer;
        padding: 0.5rem;
    }
}
/* Leaderboard Styles */
.leaderboard-container {
    background: white;
    border-radius: 12px;
    padding: 2rem;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
}

.leaderboard-header {
    margin-bottom: 2rem;
}

.filter-tabs {
    display: flex;
    gap: 1rem;
    border-bottom: 2px solid #f1f3f4;
}

.filter-tab {
    background: none;
    border: none;
    padding: 0.75rem 1.5rem;
    color: #666;
    font-weight: 500;
    cursor: pointer;
    border-bottom: 2px solid transparent;
    transition: all 0.3s ease;
}

.filter-tab.active {
    color: #667eea;
    border-bottom-color: #667eea;
}

.filter-tab:hover {
    color: #667eea;
}

.leaderboard-list {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.leaderboard-entry {
    display: flex;
    align-items: center;
    padding: 1.5rem;
    background: #f8f9fa;
    border-radius: 12px;
    transition: all 0.3s ease;
    position: relative;
}

.leaderboard-entry:hover {
    background: #e9ecef;
    transform: translateY(-1px);
}

.leaderboard-entry.top-3 {
    background: linear-gradient(135deg, #ffeaa7 0%, #fab1a0 100%);
    border: 2px solid #f39c12;
}

.leaderboard-rank {
    font-size: 2rem;
    font-weight: 700;
    color: #667eea;
    width: 60px;
    text-align: center;
    margin-right: 1rem;
}

.leaderboard-rank.top-1 {
    color: #f39c12;
}

.leaderboard-rank TOP-2 {
    color: #95a5a6;
}

.leaderboard-rank TOP-3 {
    color: #e67e22;
}

.leaderboard-user {
    flex: 1;
    display: flex;
    align-items: center;
    gap: 1rem;
}

.leaderboard-avatar {
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.2rem;
}

.leaderboard-details h4 {
    color: #333;
    margin-bottom: 0.25rem;
}

.leaderboard-details p {
    color: #666;
    font-size: 0.9rem;
}

.leaderboard-xp {
    font-size: 1.5rem;
    font-weight: 700;
    color: #667eea;
}

.xp-badge {
    background: rgba(102, 126, 234, 0.1);
    color: #667eea;
    padding: 0.25rem 0.75rem;
    border-radius: 15px;
    font-size: 0.8rem;
    font-weight: 600;
}

/* Mentor Dashboard Styles */
#mentor-dashboard-page {
    background: #f8f9fa;
    display: none;
    height: 100vh;
    overflow: hidden;
}

.mentor-info {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    background: rgba(255, 107, 107, 0.1);
    padding: 0.5rem 1rem;
    border-radius: 25px;
    backdrop-filter: blur(10px);
}

.mentor-info .user-avatar {
    background: rgba(255, 107, 107, 0.2);
}

.mentor-doubts-list, .mentor-answers-list {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.mentor-doubt-card {
    background: white;
    border-radius: 12px;
    padding: 1.5rem;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    transition: all 0.3s ease;
    border-left: 4px solid #ff6b6b;
}

.mentor-doubt-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
}

.mentor-doubt-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 1rem;
}

.mentor-doubt-title {
    font-size: 1.2rem;
    font-weight: 600;
    color: #333;
    margin-bottom: 0.5rem;
}

.mentor-doubt-meta {
    display: flex;
    gap: 1rem;
    font-size: 0.9rem;
    color: #666;
}

.mentor-doubt-description {
    color: #555;
    line-height: 1.6;
    margin-bottom: 1.5rem;
}

.mentor-doubt-actions {
    display: flex;
    gap: 1rem;
    align-items: center;
}

.mentor-action-btn {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border: none;
    padding: 0.75rem 1.5rem;
    border-radius: 8px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.mentor-action-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(102, 126, 234, 0.3);
}

.mentor-answer-card {
    background: white;
    border-radius: 12px;
    padding: 1.5rem;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    border-left: 4px solid #27ae60;
}

.expertise-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.expertise-tag {
    background: rgba(102, 126, 234, 0.1);
    color: #667eea;
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: 500;
}

/* Modal Styles */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 2000;
    backdrop-filter: blur(5px);
}

.modal.active {
    display: flex;
}

.modal-content {
    background: white;
    border-radius: 12px;
    max-width: 600px;
    width: 90%;
    max-height: 80vh;
    overflow-y: auto;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.2);
    animation: modalSlideIn 0.3s ease-out;
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem;
    border-bottom: 1px solid #e1e5e9;
}

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

.close-modal {
    background: none;
    border: none;
    font-size: 1.5rem;
    color: #666;
    cursor: pointer;
    padding: 0.5rem;
    border-radius: 50%;
    transition: all 0.3s ease;
}

.close-modal:hover {
    background: #f8f9fa;
    color: #333;
}

.modal-body {
    padding: 1.5rem;
}

.doubt-info {
    background: #f8f9fa;
    padding: 1rem;
    border-radius: 8px;
    margin-bottom: 1.5rem;
}

.doubt-info h4 {
    color: #333;
    margin-bottom: 0.5rem;
}

.doubt-info p {
    color: #666;
    line-height: 1.6;
    margin-bottom: 0.5rem;
}

.answer-form .form-group {
    margin-bottom: 1.5rem;
}

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

.answer-form textarea {
    width: 100%;
    padding: 0.75rem;
    border: 2px solid #e1e5e9;
    border-radius: 8px;
    font-size: 1rem;
    font-family: inherit;
    resize: vertical;
    transition: all 0.3s ease;
}

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

.answer-form .form-actions {
    display: flex;
    gap: 1rem;
    justify-content: flex-end;
    margin-top: 1.5rem;
}

/* XP Animation */
@keyframes xpGain {
    0% {
        transform: scale(1);
        color: #667eea;
    }
    50% {
        transform: scale(1.2);
        color: #f39c12;
    }
    100% {
        transform: scale(1);
        color: #667eea;
    }
}

.xp-animate {
    animation: xpGain 0.6s ease-out;
}

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

/* Responsive Mentor Dashboard */
@media (max-width: 768px) {
    .leaderboard-entry {
        flex-direction: column;
        text-align: center;
        gap: 1rem;
    }
    
    .leaderboard-rank {
        width: auto;
        margin-right: 0;
    }
    
    .leaderboard-xp {
        font-size: 1.2rem;
    }
    
    .modal-content {
        width: 95%;
        margin: 1rem;
    }
    
    .answer-form .form-actions {
        flex-direction: column;
    }
}

/* XP Summary Styles */
.xp-summary {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    background: rgba(102, 126, 234, 0.1);
    padding: 0.75rem 1rem;
    border-radius: 25px;
    margin-top: 1rem;
}

.xp-label {
    color: #667eea;
    font-weight: 500;
    font-size: 0.9rem;
}

.xp-value {
    color: #f39c12;
    font-weight: 700;
    font-size: 1.2rem;
}

.activity-summary {
    display: flex;
    gap: 1rem;
    margin-top: 0.5rem;
    flex-wrap: wrap;
}

.activity-item {
    background: #f8f9fa;
    color: #666;
    padding: 0.5rem 1rem;
    border-radius: 15px;
    font-size: 0.8rem;
    font-weight: 500;
}

/* Section Controls Enhancement */
.section-controls {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    margin-top: 1rem;
}

#profile-section .section-controls {
    background: rgba(102, 126, 234, 0.05);
    padding: 1rem;
    border-radius: 12px;
    border-left: 3px solid #667eea;
}

/* Mentor Dashboard Additional Styles */
#mentor-dashboard-page .dashboard-sidebar {
    border-right-color: #ff6b6b;
}

#mentor-dashboard-page .nav-item.active {
    border-left-color: #ff6b6b;
}

#mentor-dashboard-page .nav-item:hover {
    background: rgba(255, 107, 107, 0.1);
    color: #ff6b6b;
}

/* Leaderboard Top 3 Special Styling */
.leaderboard-entry.top-1 {
    background: linear-gradient(135deg, #ffeaa7 0%, #fab1a0 100%);
    border: 3px solid #f39c12;
    box-shadow: 0 5px 25px rgba(243, 156, 18, 0.3);
}

.leaderboard-entry.top-2 {
    background: linear-gradient(135deg, #ddd6fe 0%, #c7d2fe 100%);
    border: 2px solid #6366f1;
}

.leaderboard-entry.top-3 {
    background: linear-gradient(135deg, #fde68a 0%, #fbbf24 100%);
    border: 2px solid #d97706;
}

/* XP Animation Enhancement */
.total-xp-display {
    position: relative;
    overflow: hidden;
}

.total-xp-display::after {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.4), transparent);
    animation: shimmer 2s infinite;
}

@keyframes shimmer {
    0% {
        left: -100%;
    }
    100% {
        left: 100%;
    }
}