/* AI Assistant Page Styles */

.ai-hero {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    padding: 100px 0 80px;
    position: relative;
    overflow: hidden;
}

.ai-hero::before {
    content: '';
    position: absolute;
    width: 500px;
    height: 500px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    top: -200px;
    right: -100px;
    animation: float 6s ease-in-out infinite;
}

.ai-hero-content {
    text-align: center;
    position: relative;
    z-index: 2;
    color: white;
}

.ai-badge {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    background: rgba(255, 255, 255, 0.2);
    padding: 10px 25px;
    border-radius: 30px;
    margin-bottom: 25px;
    backdrop-filter: blur(10px);
}

.ai-badge i {
    font-size: 1.3rem;
    animation: pulse 2s infinite;
}

.ai-hero h1 {
    font-size: 3.5rem;
    margin-bottom: 20px;
    text-shadow: 0 2px 20px rgba(0, 0, 0, 0.2);
}

.ai-hero p {
    font-size: 1.3rem;
    opacity: 0.95;
}

/* AI Features Grid */
.ai-features-section {
    padding: 80px 0;
    background: #f8f9fa;
}

.ai-features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 40px;
}

.ai-feature-card {
    background: white;
    border-radius: 20px;
    padding: 40px;
    text-align: center;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.08);
    transition: all 0.3s ease;
}

.ai-feature-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 50px rgba(0, 0, 0, 0.12);
}

.feature-icon {
    width: 90px;
    height: 90px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 25px;
}

.feature-icon i {
    font-size: 2.5rem;
    color: white;
}

.ai-feature-card h3 {
    color: var(--primary-text-color);
    margin-bottom: 15px;
    font-size: 1.5rem;
}

.ai-feature-card p {
    color: var(--secondary-text-color);
    margin-bottom: 25px;
    line-height: 1.6;
}

/* AI Modal Styles */
.ai-modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.7);
    z-index: 10000;
    align-items: center;
    justify-content: center;
    backdrop-filter: blur(5px);
}

.ai-modal.show {
    display: flex;
}

.ai-modal-content {
    background: white;
    border-radius: 25px;
    padding: 40px;
    max-width: 600px;
    width: 90%;
    max-height: 85vh;
    overflow-y: auto;
    position: relative;
    animation: modalSlideIn 0.3s ease;
}

.close-modal {
    position: absolute;
    top: 20px;
    right: 20px;
    width: 40px;
    height: 40px;
    border: none;
    background: #f0f0f0;
    border-radius: 50%;
    cursor: pointer;
    font-size: 1.2rem;
    color: #666;
    transition: all 0.3s ease;
}

.close-modal:hover {
    background: #e0e0e0;
    transform: rotate(90deg);
}

.modal-subtitle {
    color: var(--secondary-text-color);
    margin-bottom: 30px;
}

/* Classifier Modal */
.upload-area {
    border: 3px dashed #ddd;
    border-radius: 15px;
    padding: 60px 30px;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s ease;
    margin-bottom: 20px;
}

.upload-area:hover {
    border-color: var(--green-theme-color);
    background: #f0fdf4;
}

.upload-area i {
    font-size: 4rem;
    color: var(--green-theme-color);
    margin-bottom: 20px;
}

.upload-area h3 {
    color: var(--primary-text-color);
    margin-bottom: 10px;
}

.upload-area p {
    color: var(--secondary-text-color);
}

.classification-result {
    text-align: center;
}

.result-image {
    width: 100%;
    height: 300px;
    border-radius: 15px;
    overflow: hidden;
    margin-bottom: 20px;
    position: relative;
}

.result-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.scanning-animation {
    margin: 30px 0;
}

.scan-line {
    width: 100%;
    height: 3px;
    background: linear-gradient(90deg, transparent, var(--green-theme-color), transparent);
    animation: scan 2s ease-in-out infinite;
}

@keyframes scan {
    0%, 100% { transform: translateY(0); opacity: 0; }
    50% { opacity: 1; }
}

.scanning-animation p {
    color: var(--secondary-text-color);
    margin-top: 15px;
    font-weight: 500;
}

.confidence-badge {
    display: inline-flex;
    flex-direction: column;
    align-items: center;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 15px 30px;
    border-radius: 15px;
    margin-bottom: 20px;
}

.confidence-value {
    font-size: 2rem;
    font-weight: 700;
}

.confidence-label {
    font-size: 0.9rem;
    opacity: 0.9;
}

.result-details h3 {
    color: var(--primary-text-color);
    margin-bottom: 25px;
    font-size: 1.5rem;
}

.waste-info {
    text-align: left;
    background: #f8f9fa;
    padding: 25px;
    border-radius: 15px;
    margin-bottom: 25px;
}

.info-item {
    display: flex;
    align-items: flex-start;
    gap: 15px;
    margin-bottom: 20px;
}

.info-item:last-child {
    margin-bottom: 0;
}

.info-item i {
    font-size: 1.5rem;
    color: var(--green-theme-color);
    margin-top: 3px;
}

.info-item strong {
    display: block;
    color: var(--primary-text-color);
    margin-bottom: 5px;
}

.info-item span {
    color: var(--secondary-text-color);
}

.result-actions {
    display: flex;
    gap: 15px;
    justify-content: center;
}

/* Chatbot Modal */
.chatbot-modal {
    max-width: 500px;
    padding: 0;
    overflow: hidden;
}

.chatbot-header {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 25px;
    display: flex;
    align-items: center;
    gap: 15px;
}

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

.bot-avatar i {
    font-size: 1.5rem;
}

.chatbot-header h3 {
    margin: 0;
    font-size: 1.2rem;
}

.bot-status {
    font-size: 0.9rem;
    opacity: 0.9;
    display: flex;
    align-items: center;
    gap: 8px;
    margin: 0;
}

.status-dot {
    width: 8px;
    height: 8px;
    background: #4ade80;
    border-radius: 50%;
    animation: pulse 2s infinite;
}

.chat-messages {
    padding: 25px;
    height: 400px;
    overflow-y: auto;
    background: #f8f9fa;
}

.message {
    display: flex;
    gap: 12px;
    margin-bottom: 20px;
}

.message-avatar {
    width: 35px;
    height: 35px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    color: white;
}

.message-bubble {
    background: white;
    padding: 12px 18px;
    border-radius: 18px;
    border-top-left-radius: 4px;
    max-width: 70%;
}

.user-message {
    flex-direction: row-reverse;
}

.user-message .message-avatar {
    background: var(--green-theme-color);
}

.user-message .message-bubble {
    background: var(--green-theme-color);
    color: white;
    border-top-left-radius: 18px;
    border-top-right-radius: 4px;
}

.message-time {
    font-size: 0.75rem;
    color: #999;
    display: block;
    margin-top: 5px;
}

.typing-dots {
    display: flex;
    gap: 5px;
    padding: 5px 0;
}

.typing-dots span {
    width: 8px;
    height: 8px;
    background: #999;
    border-radius: 50%;
    animation: typing 1.4s infinite ease-in-out both;
}

.typing-dots span:nth-child(1) {
    animation-delay: -0.32s;
}

.typing-dots span:nth-child(2) {
    animation-delay: -0.16s;
}

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

@keyframes zoomIn {
    from {
        opacity: 0;
        transform: scale(0.8);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

@keyframes typing {
    0%, 80%, 100% {
        transform: scale(0.8);
        opacity: 0.5;
    }
    40% {
        transform: scale(1);
        opacity: 1;
    }
}

/* AI Page Specific Styles */
.ai-page-hero {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    padding: 60px 0 40px;
    color: white;
    text-align: center;
}

.back-link {
    color: white;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 20px;
    opacity: 0.9;
    transition: all 0.3s ease;
}

.back-link:hover {
    opacity: 1;
    transform: translateX(-5px);
}

.ai-page-hero h1 {
    font-size: 2.5rem;
    margin-bottom: 15px;
}

.ai-page-hero p {
    font-size: 1.1rem;
    opacity: 0.95;
}

.classifier-section {
    padding: 60px 0;
    background: #f8f9fa;
    min-height: 60vh;
}

.estimator-section {
    padding: 60px 0;
    background: #f8f9fa;
    min-height: 60vh;
}

.estimator-fullscreen {
    padding: 20px 0;
    background: #e9ecef;
    min-height: calc(100vh - 120px);
}

.estimator-fullscreen .container {
    max-width: 900px;
}

.estimator-container {
    background: white;
    border-radius: 20px;
    overflow: hidden;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.1);
}

.estimator-header {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 25px 30px;
    display: flex;
    align-items: center;
    gap: 20px;
}

.back-link-estimator {
    color: white;
    text-decoration: none;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 45px;
    height: 45px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.2);
    transition: all 0.3s ease;
}

.back-link-estimator:hover {
    background: rgba(255, 255, 255, 0.3);
    transform: scale(1.1);
}

.header-content {
    display: flex;
    align-items: center;
    gap: 15px;
    flex: 1;
}

.header-icon {
    width: 55px;
    height: 55px;
    background: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #667eea;
    font-size: 1.6rem;
}

.estimator-header h2 {
    margin: 0;
    font-size: 1.6rem;
}

.estimator-header p {
    margin: 5px 0 0 0;
    font-size: 0.9rem;
    opacity: 0.95;
}

.estimator-content {
    padding: 40px;
}

.estimator-form-card {
    background: #f8f9fa;
    padding: 35px;
    border-radius: 15px;
    margin-bottom: 30px;
}

.estimator-form-card h3 {
    color: var(--primary-text-color);
    margin-bottom: 25px;
    font-size: 1.4rem;
}

.estimator-form-card h3 i {
    color: #667eea;
    margin-right: 10px;
}

.form-group {
    margin-bottom: 25px;
}

.form-group label {
    display: block;
    margin-bottom: 10px;
    color: var(--primary-text-color);
    font-weight: 600;
    font-size: 0.95rem;
}

.form-group label i {
    color: #667eea;
    margin-right: 8px;
}

.form-group select,
.form-group input,
.form-group textarea {
    width: 100%;
    padding: 14px 18px;
    border: 2px solid #e5e7eb;
    border-radius: 12px;
    font-size: 1rem;
    font-family: 'Poppins', sans-serif;
    transition: all 0.3s ease;
}

.form-group select:focus,
.form-group input: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;
}

.quantity-input-group {
    display: flex;
    gap: 8px;
    align-items: stretch;
    max-width: 200px;
}

.quantity-input-group input {
    flex: 1;
    width: 100%;
    min-width: 90px;
    padding: 14px 18px;
    border: 2px solid #e5e7eb;
    border-radius: 12px;
    font-size: 1rem;
    font-family: 'Poppins', sans-serif;
}

.quantity-input-group select {
    width: 70px;
    flex-shrink: 0;
    padding: 14px 6px;
    font-size: 0.85rem;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

.image-upload-group {
    margin-bottom: 30px;
}

.image-upload-area {
    border: 2px dashed #667eea;
    border-radius: 15px;
    padding: 40px;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s ease;
    background: rgba(102, 126, 234, 0.02);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

.image-upload-area:hover {
    border-color: #764ba2;
    background: rgba(102, 126, 234, 0.05);
}

.image-upload-area i {
    font-size: 3rem;
    color: #667eea;
    margin-bottom: 15px;
    display: block;
}

.image-upload-area p {
    color: var(--secondary-text-color);
    margin: 0;
}

.image-preview {
    position: relative;
    border-radius: 15px;
    overflow: hidden;
    margin-top: 15px;
}

.image-preview img {
    width: 100%;
    max-height: 300px;
    object-fit: cover;
    border-radius: 15px;
}

.remove-image-btn {
    position: absolute;
    top: 10px;
    right: 10px;
    width: 35px;
    height: 35px;
    background: rgba(255, 255, 255, 0.9);
    border: none;
    border-radius: 50%;
    color: #e74c3c;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
}

.remove-image-btn:hover {
    background: white;
    transform: scale(1.1);
}

.estimate-btn {
    width: 100%;
    padding: 16px;
    font-size: 1.1rem;
}

.estimation-result {
    margin-top: 30px;
}

.estimate-card {
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.05) 0%, rgba(118, 75, 162, 0.05) 100%);
    padding: 35px;
    border-radius: 15px;
    border: 2px solid rgba(102, 126, 234, 0.2);
}

.estimate-header {
    text-align: center;
    margin-bottom: 25px;
}

.estimate-header i {
    font-size: 3rem;
    color: var(--green-theme-color);
    margin-bottom: 15px;
    display: block;
}

.estimate-header h3 {
    color: var(--primary-text-color);
    font-size: 1.5rem;
    margin: 0;
}

.estimate-price {
    text-align: center;
    margin: 30px 0;
}

.estimate-price .currency {
    font-size: 2.5rem;
    color: var(--primary-text-color);
    vertical-align: super;
}

.estimate-price .amount {
    font-size: 4rem;
    font-weight: 700;
    color: var(--green-theme-color);
}

.estimate-range {
    text-align: center;
    color: var(--secondary-text-color);
    font-size: 1.1rem;
    margin-bottom: 30px;
}

.ai-analysis {
    background: white;
    padding: 20px;
    border-radius: 12px;
    margin-bottom: 25px;
    border-left: 4px solid #667eea;
}

.ai-analysis h4 {
    color: var(--primary-text-color);
    margin-bottom: 12px;
    font-size: 1.1rem;
}

.ai-analysis h4 i {
    color: #667eea;
    margin-right: 8px;
}

.ai-analysis p {
    color: var(--secondary-text-color);
    line-height: 1.7;
    margin: 0;
}

.estimate-factors {
    background: white;
    padding: 20px;
    border-radius: 12px;
    margin-bottom: 25px;
}

.estimate-factors h4 {
    color: var(--primary-text-color);
    margin-bottom: 15px;
    font-size: 1.1rem;
}

.factor-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 0;
    border-bottom: 1px solid #e5e7eb;
}

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

.factor-item span {
    color: var(--secondary-text-color);
}

.factor-item i {
    color: #667eea;
    margin-right: 8px;
}

.factor-value {
    font-weight: 600;
    color: var(--green-theme-color) !important;
}

.estimate-actions {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 15px;
}

.chatbot-section {
    padding: 40px 0;
    background: #f8f9fa;
    min-height: calc(100vh - 160px);
}

.chatbot-fullscreen {
    padding: 0;
    background: #e9ecef;
    min-height: calc(100vh - 120px);
    display: flex;
    align-items: center;
}

.chatbot-fullscreen .container {
    max-width: 1000px;
    width: 100%;
    padding: 20px;
}

.chatbot-container {
    max-width: 100%;
    height: calc(100vh - 160px);
    margin: 0 auto;
    background: white;
    border-radius: 20px;
    overflow: hidden;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.15);
    display: flex;
    flex-direction: column;
}

.chatbot-header {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 20px 25px;
    display: flex;
    align-items: center;
    gap: 15px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
}

.back-link-chat {
    color: white;
    text-decoration: none;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.2);
    transition: all 0.3s ease;
}

.back-link-chat:hover {
    background: rgba(255, 255, 255, 0.3);
    transform: scale(1.1);
}

.bot-avatar {
    width: 50px;
    height: 50px;
    background: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #667eea;
    font-size: 1.5rem;
}

.header-info {
    flex: 1;
}

.header-info h3 {
    margin: 0;
    font-size: 1.3rem;
}

.bot-status {
    margin: 5px 0 0 0;
    font-size: 0.85rem;
    opacity: 0.95;
}

.status-dot {
    display: inline-block;
    width: 8px;
    height: 8px;
    background: #4ade80;
    border-radius: 50%;
    margin-right: 5px;
    animation: pulse 2s infinite;
}

.clear-chat-btn {
    background: rgba(255, 255, 255, 0.2);
    border: none;
    color: white;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
}

.clear-chat-btn:hover {
    background: rgba(255, 255, 255, 0.3);
    transform: scale(1.1);
}

.chat-messages {
    flex: 1;
    overflow-y: auto;
    padding: 25px;
    background: #f8f9fa;
}

.message {
    display: flex;
    gap: 12px;
    margin-bottom: 20px;
    animation: messageSlideIn 0.3s ease;
}

.user-message {
    flex-direction: row-reverse;
}

.message-avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.1rem;
    flex-shrink: 0;
}

.user-message .message-avatar {
    background: linear-gradient(135deg, #4ade80 0%, #22c55e 100%);
}

.message-bubble {
    max-width: 70%;
    padding: 14px 18px;
    border-radius: 18px;
    background: white;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
}

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

.message-bubble p {
    margin: 0;
    line-height: 1.6;
}

.message-time {
    font-size: 0.75rem;
    opacity: 0.6;
    margin-top: 6px;
    display: block;
}

.quick-questions {
    padding: 15px 25px;
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
    background: white;
    border-top: 1px solid #e5e7eb;
}

.quick-questions button {
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.1) 0%, rgba(118, 75, 162, 0.1) 100%);
    border: 1px solid rgba(102, 126, 234, 0.3);
    color: #667eea;
    padding: 8px 16px;
    border-radius: 20px;
    cursor: pointer;
    font-size: 0.85rem;
    font-weight: 500;
    transition: all 0.3s ease;
}

.quick-questions button:hover {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    transform: translateY(-2px);
}

.chat-input-area {
    padding: 20px 25px;
    background: white;
    display: flex;
    gap: 12px;
    border-top: 1px solid #e5e7eb;
}

.chat-input-area input {
    flex: 1;
    padding: 14px 18px;
    border: 2px solid #e5e7eb;
    border-radius: 25px;
    font-size: 1rem;
    outline: none;
    transition: all 0.3s ease;
}

.chat-input-area input:focus {
    border-color: #667eea;
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

.chat-input-area button {
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border: none;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    transition: all 0.3s ease;
}

.chat-input-area button:hover {
    transform: scale(1.1);
    box-shadow: 0 5px 15px rgba(102, 126, 234, 0.4);
}

@keyframes messageSlideIn {
    from {
        opacity: 0;
        transform: translateY(15px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.5;
    }
}

/* Responsive */
@media (max-width: 768px) {
    .chatbot-container {
        height: calc(100vh - 130px);
        border-radius: 0;
    }
    
    .chatbot-fullscreen .container {
        padding: 0;
    }
    
    .message-bubble {
        max-width: 85%;
    }
    
    .quick-questions {
        gap: 8px;
    }
    
    .quick-questions button {
        font-size: 0.8rem;
        padding: 6px 12px;
    }
}

/* How It Works Section Styles */
.how-it-works-section {
    padding: 80px 0;
    background: linear-gradient(to bottom, #f8f9fa 0%, #ffffff 100%);
}

.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-header h2 {
    font-size: 2.5rem;
    color: var(--primary-text-color);
    margin-bottom: 15px;
}

.section-header h2 i {
    color: #667eea;
    margin-right: 10px;
}

.section-header p {
    font-size: 1.1rem;
    color: var(--secondary-text-color);
}

.steps-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
    margin-bottom: 80px;
}

.step-card {
    background: white;
    padding: 40px 30px;
    border-radius: 20px;
    text-align: center;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
    transition: all 0.3s ease;
    position: relative;
}

.step-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.12);
}

.step-number {
    position: absolute;
    top: -20px;
    right: 20px;
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: 700;
    box-shadow: 0 5px 15px rgba(102, 126, 234, 0.4);
}

.step-icon {
    width: 90px;
    height: 90px;
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.1) 0%, rgba(118, 75, 162, 0.1) 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 25px;
}

.step-icon i {
    font-size: 2.5rem;
    color: #667eea;
}

.step-card h3 {
    font-size: 1.4rem;
    margin-bottom: 15px;
    color: var(--primary-text-color);
}

.step-card p {
    color: var(--secondary-text-color);
    line-height: 1.6;
}

/* Examples Section */
.examples-section {
    margin-bottom: 60px;
}

.examples-section h3 {
    text-align: center;
    font-size: 2rem;
    color: var(--primary-text-color);
    margin-bottom: 10px;
}

.examples-section h3 i {
    color: #667eea;
    margin-right: 10px;
}

.examples-subtitle {
    text-align: center;
    color: var(--secondary-text-color);
    margin-bottom: 40px;
    font-size: 1.05rem;
}

.examples-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 25px;
}

.example-card {
    background: white;
    border-radius: 15px;
    padding: 25px;
    text-align: center;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
    transition: all 0.3s ease;
    cursor: pointer;
}

.example-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 10px 30px rgba(102, 126, 234, 0.3);
}

.example-image {
    width: 120px;
    height: 120px;
    border-radius: 15px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    transition: all 0.3s ease;
}

.example-image i {
    font-size: 3.5rem;
    color: white;
}

.plastic-demo {
    background: linear-gradient(135deg, #3498db, #2980b9);
}

.ewaste-demo {
    background: linear-gradient(135deg, #e74c3c, #c0392b);
}

.metal-demo {
    background: linear-gradient(135deg, #95a5a6, #7f8c8d);
}

.paper-demo {
    background: linear-gradient(135deg, #f39c12, #e67e22);
}

.example-card:hover .example-image {
    transform: scale(1.1) rotate(5deg);
}

.example-card h4 {
    font-size: 1.2rem;
    color: var(--primary-text-color);
    margin-bottom: 8px;
}

.example-type {
    color: var(--green-theme-color);
    font-weight: 600;
    font-size: 0.95rem;
    margin-bottom: 15px;
}

.example-btn {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border: none;
    padding: 10px 20px;
    border-radius: 25px;
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
}

.example-btn:hover {
    transform: scale(1.05);
    box-shadow: 0 5px 15px rgba(102, 126, 234, 0.4);
}

/* Tips Section */
.tips-section {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    padding: 50px;
    border-radius: 20px;
    color: white;
}

.tips-section h3 {
    text-align: center;
    font-size: 1.8rem;
    margin-bottom: 35px;
}

.tips-section h3 i {
    margin-right: 10px;
}

.tips-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
}

.tip-item {
    text-align: center;
    background: rgba(255, 255, 255, 0.15);
    padding: 25px 20px;
    border-radius: 15px;
    backdrop-filter: blur(10px);
    transition: all 0.3s ease;
}

.tip-item:hover {
    background: rgba(255, 255, 255, 0.25);
    transform: translateY(-5px);
}

.tip-item i {
    font-size: 2.5rem;
    margin-bottom: 15px;
    display: block;
}

.tip-item p {
    font-size: 1rem;
    font-weight: 500;
    margin: 0;
}

/* Responsive Design for How It Works */
@media (max-width: 1200px) {
    .examples-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .steps-grid {
        grid-template-columns: 1fr;
        gap: 50px;
    }
    
    .examples-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 20px;
    }
    
    .tips-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 20px;
    }
    
    .section-header h2 {
        font-size: 2rem;
    }
    
    .examples-section h3 {
        font-size: 1.6rem;
    }
}

@media (max-width: 480px) {
    .examples-grid {
        grid-template-columns: 1fr;
    }
    
    .tips-grid {
        grid-template-columns: 1fr;
    }
}

.quick-questions {
    padding: 15px 25px;
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    border-top: 1px solid #eee;
}

.quick-questions button {
    background: white;
    border: 2px solid #e0e0e0;
    padding: 8px 15px;
    border-radius: 20px;
    cursor: pointer;
    font-size: 0.85rem;
    transition: all 0.3s ease;
}

.quick-questions button:hover {
    border-color: var(--green-theme-color);
    background: #f0fdf4;
}

.chat-input-area {
    padding: 20px 25px;
    display: flex;
    gap: 10px;
    border-top: 1px solid #eee;
}

.chat-input-area input {
    flex: 1;
    border: 2px solid #e0e0e0;
    border-radius: 25px;
    padding: 12px 20px;
    font-family: 'Poppins', sans-serif;
    outline: none;
}

.chat-input-area input:focus {
    border-color: var(--green-theme-color);
}

.chat-input-area button {
    width: 45px;
    height: 45px;
    background: var(--green-theme-color);
    color: white;
    border: none;
    border-radius: 50%;
    cursor: pointer;
    transition: all 0.3s ease;
}

.chat-input-area button:hover {
    background: var(--green-theme-color-dark);
    transform: scale(1.1);
}

/* Estimator Modal */
.estimator-form {
    margin-bottom: 30px;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    color: var(--primary-text-color);
    font-weight: 600;
    margin-bottom: 8px;
}

.form-group input,
.form-group select {
    width: 100%;
    padding: 12px 15px;
    border: 2px solid #e0e0e0;
    border-radius: 10px;
    font-family: 'Poppins', sans-serif;
    font-size: 1rem;
}

.form-group input:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--green-theme-color);
}

.ai-thinking {
    text-align: center;
    padding: 40px 0;
}

.thinking-animation {
    display: flex;
    justify-content: center;
    gap: 10px;
    margin-bottom: 20px;
}

.thinking-animation span {
    width: 15px;
    height: 15px;
    background: var(--green-theme-color);
    border-radius: 50%;
    animation: bounce 1.4s infinite ease-in-out both;
}

.thinking-animation span:nth-child(1) {
    animation-delay: -0.32s;
}

.thinking-animation span:nth-child(2) {
    animation-delay: -0.16s;
}

@keyframes bounce {
    0%, 80%, 100% { transform: scale(0); }
    40% { transform: scale(1); }
}

.estimate-card {
    background: linear-gradient(135deg, #f0fdf4 0%, #dcfce7 100%);
    padding: 30px;
    border-radius: 20px;
    text-align: center;
}

.estimate-header {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    margin-bottom: 20px;
}

.estimate-header i {
    font-size: 1.5rem;
    color: var(--green-theme-color);
}

.estimate-price {
    font-size: 4rem;
    font-weight: 700;
    color: var(--primary-text-color);
    margin: 20px 0;
}

.estimate-price .currency {
    font-size: 2.5rem;
    vertical-align: top;
}

.estimate-range {
    color: var(--secondary-text-color);
    margin-bottom: 25px;
    font-size: 1.1rem;
}

.estimate-factors {
    background: white;
    padding: 20px;
    border-radius: 15px;
    text-align: left;
    margin-bottom: 25px;
}

.estimate-factors h4 {
    color: var(--primary-text-color);
    margin-bottom: 15px;
}

.factor-item {
    display: flex;
    justify-content: space-between;
    padding: 10px 0;
    border-bottom: 1px solid #f0f0f0;
}

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

.factor-value {
    font-weight: 600;
    color: var(--green-theme-color);
}

/* Floating AI Button */
.floating-ai-btn {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border: none;
    border-radius: 50%;
    font-size: 1.5rem;
    cursor: pointer;
    box-shadow: 0 8px 25px rgba(102, 126, 234, 0.4);
    transition: all 0.3s ease;
    z-index: 9999;
    animation: float 3s ease-in-out infinite;
}

.floating-ai-btn:hover {
    transform: scale(1.1);
    box-shadow: 0 12px 35px rgba(102, 126, 234, 0.5);
}

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

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

/* Responsive Design */
@media (max-width: 768px) {
    .ai-hero h1 {
        font-size: 2.5rem;
    }

    .ai-modal-content {
        width: 95%;
        padding: 25px;
    }

    .result-actions {
        flex-direction: column;
    }

    .result-actions button {
        width: 100%;
    }

    .estimate-price {
        font-size: 3rem;
    }
}