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

:root {
    --primary: #3a86ff;
    --primary-dark: #2667cc;
    --secondary: #8338ec;
    --accent: #ff006e;
    --success: #06d6a0;
    --warning: #ffbe0b;
    --danger: #ef476f;
    
    --bg-primary: #ffffff;
    --bg-secondary: #f8f9fa;
    --bg-tertiary: #e9ecef;
    
    --text-primary: #212529;
    --text-secondary: #6c757d;
    --text-tertiary: #adb5bd;
    
    --border-color: #dee2e6;
    --shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
    --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.1);
    
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 16px;
    
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    
    --transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

body.dark-mode {
    --primary: #5a9cff;
    --primary-dark: #3a86ff;
    --secondary: #9d5cff;
    --accent: #ff3385;
    
    --bg-primary: #121212;
    --bg-secondary: #1e1e1e;
    --bg-tertiary: #2d2d2d;
    
    --text-primary: #f8f9fa;
    --text-secondary: #adb5bd;
    --text-tertiary: #6c757d;
    
    --border-color: #343a40;
    --shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
    --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.3);
}

body {
    font-family: var(--font-family);
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.5;
    transition: var(--transition);
    min-height: 100vh;
}

.container {
    max-width: 1600px;
    margin: 0 auto;
    padding: 0 24px;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Header */
.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 24px 0;
    border-bottom: 1px solid var(--border-color);
    margin-bottom: 32px;
}

.logo-container {
    display: flex;
    align-items: center;
    gap: 12px;
}

.logo-icon {
    font-size: 32px;
    line-height: 1;
}

.logo-text {
    font-size: 28px;
    font-weight: 700;
    background: linear-gradient(90deg, var(--primary), var(--secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.beta-badge {
    background: linear-gradient(90deg, var(--accent), var(--warning));
    color: white;
    font-size: 12px;
    font-weight: 600;
    padding: 4px 8px;
    border-radius: 20px;
    margin-left: 8px;
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 12px;
}

/* Button Styles */
.btn-primary, .btn-secondary, .btn-ghost {
    padding: 10px 18px;
    border-radius: var(--radius-md);
    font-weight: 600;
    font-size: 14px;
    cursor: pointer;
    transition: var(--transition);
    border: none;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.btn-primary {
    background-color: var(--primary);
    color: white;
    box-shadow: 0 2px 8px rgba(58, 134, 255, 0.3);
}

.btn-primary:hover {
    background-color: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(58, 134, 255, 0.4);
}

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

.btn-secondary:hover {
    background-color: var(--bg-tertiary);
    border-color: var(--text-tertiary);
}

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

.btn-ghost:hover {
    background-color: var(--bg-secondary);
    color: var(--text-primary);
}

/* Main Content Layout */
.main-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    flex: 1;
    margin-bottom: 40px;
}

@media (max-width: 1024px) {
    .main-content {
        grid-template-columns: 1fr;
        gap: 32px;
    }
}

/* Chat Column */
.chat-column, .deals-column {
    display: flex;
    flex-direction: column;
}

.chat-header, .deals-header {
    margin-bottom: 24px;
}

.chat-header h2, .deals-header h2 {
    font-size: 22px;
    font-weight: 700;
    margin-bottom: 8px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.subtitle {
    color: var(--text-secondary);
    font-size: 14px;
    line-height: 1.5;
}

/* Chat Container */
.chat-container {
    flex: 1;
    display: flex;
    flex-direction: column;
    background-color: var(--bg-secondary);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-color);
    overflow: hidden;
    box-shadow: var(--shadow);
}

.chat-messages {
    flex: 1;
    padding: 24px;
    overflow-y: auto;
    max-height: 500px;
    display: flex;
    flex-direction: column;
    gap: 20px;
}

/* Message Styles */
.message {
    display: flex;
    gap: 12px;
    animation: fadeInUp 0.3s ease-out;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

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

.user-message .message-content {
    align-items: flex-end;
}

.message-avatar {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.user-message .message-avatar {
    background: linear-gradient(135deg, var(--accent), var(--warning));
}

.message-content {
    display: flex;
    flex-direction: column;
    max-width: 75%;
}

.message-sender {
    font-weight: 600;
    font-size: 14px;
    margin-bottom: 6px;
    color: var(--text-primary);
}

.message-text {
    background-color: var(--bg-primary);
    padding: 14px 18px;
    border-radius: var(--radius-lg);
    font-size: 15px;
    line-height: 1.5;
    box-shadow: var(--shadow);
}

.ai-message .message-text {
    border-top-left-radius: 4px;
}

.user-message .message-text {
    background-color: var(--primary);
    color: white;
    border-top-right-radius: 4px;
}

.message-time {
    font-size: 12px;
    color: var(--text-tertiary);
    margin-top: 6px;
}

/* Typing Indicator */
.typing-indicator {
    display: flex;
    gap: 12px;
    padding: 0 24px 24px;
    display: none;
}

.typing-avatar {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.typing-content {
    display: flex;
    flex-direction: column;
}

.typing-dots {
    display: flex;
    align-items: center;
    gap: 4px;
    padding: 14px 18px;
    background-color: var(--bg-primary);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
    width: fit-content;
}

.typing-dots span {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background-color: var(--text-tertiary);
    display: inline-block;
    animation: typingAnimation 1.5s infinite ease-in-out;
}

.typing-dots span:nth-child(1) {
    animation-delay: 0s;
}
.typing-dots span:nth-child(2) {
    animation-delay: 0.2s;
}
.typing-dots span:nth-child(3) {
    animation-delay: 0.4s;
}

@keyframes typingAnimation {
    0%, 100% {
        opacity: 0.4;
        transform: translateY(0);
    }
    50% {
        opacity: 1;
        transform: translateY(-5px);
    }
}

/* Chat Input */
.chat-input-container {
    padding: 20px 24px;
    border-top: 1px solid var(--border-color);
    background-color: var(--bg-primary);
}

.input-wrapper {
    position: relative;
    display: flex;
    margin-bottom: 12px;
}

#chat-input, #deal-request-input {
    flex: 1;
    padding: 16px 20px;
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-color);
    background-color: var(--bg-secondary);
    color: var(--text-primary);
    font-family: var(--font-family);
    font-size: 15px;
    transition: var(--transition);
}

#chat-input:focus, #deal-request-input:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(58, 134, 255, 0.1);
}

.send-btn {
    position: absolute;
    right: 8px;
    top: 50%;
    transform: translateY(-50%);
    background-color: var(--primary);
    color: white;
    border: none;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: var(--transition);
}

.send-btn:hover {
    background-color: var(--primary-dark);
    transform: translateY(-50%) scale(1.05);
}

.input-hint {
    font-size: 13px;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    gap: 6px;
}

/* Chat Footer */
.chat-footer {
    margin-top: 24px;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
}

.feature {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: 12px;
    background-color: var(--bg-secondary);
    border-radius: var(--radius-md);
    font-size: 14px;
    font-weight: 500;
    color: var(--text-secondary);
    transition: var(--transition);
    cursor: pointer;
    user-select: none;
}

.feature:hover {
    background-color: var(--bg-tertiary);
    color: var(--text-primary);
    transform: translateY(-2px);
    box-shadow: var(--shadow);
}

.feature:active {
    transform: translateY(0);
}

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

.feature.active i {
    color: white;
}

.feature i {
    color: var(--primary);
}

/* Deals Column */
.deal-stats {
    display: flex;
    gap: 24px;
    margin-top: 20px;
}

.stat {
    text-align: center;
    padding: 16px;
    background-color: var(--bg-secondary);
    border-radius: var(--radius-md);
    flex: 1;
}

.stat-value {
    font-size: 28px;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 4px;
}

.stat-label {
    font-size: 13px;
    color: var(--text-secondary);
}

/* Deals Container */
.deals-container {
    flex: 1;
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 20px;
    overflow-y: auto;
    max-height: 700px;
    padding-right: 8px;
}

@media (max-width: 768px) {
    .deals-container {
        grid-template-columns: 1fr;
    }
}

/* Deal Cards */
.deal-card {
    background-color: var(--bg-secondary);
    border-radius: var(--radius-lg);
    overflow: hidden;
    border: 1px solid var(--border-color);
    transition: var(--transition);
    animation: slideInRight 0.5s ease-out;
    position: relative;
}

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

.deal-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.deal-card.featured {
    border-color: var(--warning);
    border-width: 2px;
}

.deal-card.activated {
    border-color: var(--success);
    border-width: 2px;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0% {
        box-shadow: 0 0 0 0 rgba(6, 214, 160, 0.4);
    }
    70% {
        box-shadow: 0 0 0 10px rgba(6, 214, 160, 0);
    }
    100% {
        box-shadow: 0 0 0 0 rgba(6, 214, 160, 0);
    }
}

.deal-badge {
    position: absolute;
    top: 12px;
    right: 12px;
    background: linear-gradient(90deg, var(--warning), var(--danger));
    color: white;
    font-size: 12px;
    font-weight: 600;
    padding: 4px 10px;
    border-radius: 20px;
    z-index: 1;
}

.deal-badge.activated {
    background: linear-gradient(90deg, var(--success), #06a078);
}

.deal-image {
    height: 160px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 64px;
}

.deal-content {
    padding: 20px;
}

.deal-title {
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 8px;
    color: var(--text-primary);
}

.deal-description {
    font-size: 14px;
    color: var(--text-secondary);
    margin-bottom: 20px;
    line-height: 1.5;
}

/* Deal Progress */
.deal-progress {
    margin-bottom: 20px;
}

.progress-info {
    display: flex;
    justify-content: space-between;
    margin-bottom: 8px;
    font-size: 14px;
}

.progress-label {
    color: var(--text-secondary);
}

.progress-value {
    color: var(--primary);
    font-weight: 600;
}

.progress-bar {
    height: 8px;
    background-color: var(--bg-tertiary);
    border-radius: 4px;
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--primary), var(--secondary));
    border-radius: 4px;
    transition: width 0.8s ease;
}

.progress-fill.activated {
    background: linear-gradient(90deg, var(--success), #06d6a0);
}

/* Deal Pricing */
.deal-pricing {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 20px;
}

.original-price {
    font-size: 16px;
    color: var(--text-tertiary);
    text-decoration: line-through;
}

.current-price {
    font-size: 28px;
    font-weight: 800;
    color: var(--primary);
}

.price-note {
    font-size: 14px;
    font-weight: 400;
    color: var(--text-secondary);
    margin-left: 4px;
}

.discount-badge {
    background-color: var(--success);
    color: white;
    font-size: 14px;
    font-weight: 600;
    padding: 4px 10px;
    border-radius: 20px;
    margin-left: auto;
}

/* Deal Actions */
.deal-actions {
    display: flex;
    gap: 10px;
}

.deal-actions .btn-primary, .deal-actions .btn-secondary {
    flex: 1;
    padding: 12px;
}

.deal-actions .btn-primary.joined {
    background-color: var(--success);
    pointer-events: none;
}

.deal-actions .btn-primary.joined i::before {
    content: "\f00c";
}

.deal-actions .btn-secondary {
    flex: 0 0 50px;
}

/* Deals Footer */
.deals-footer {
    margin-top: 24px;
    padding: 16px;
    background-color: var(--bg-secondary);
    border-radius: var(--radius-md);
    font-size: 14px;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    gap: 10px;
}

.deals-footer i {
    color: var(--primary);
}

/* Toast Notification */
.toast {
    position: fixed;
    bottom: 24px;
    right: 24px;
    background-color: var(--bg-primary);
    border-radius: var(--radius-md);
    padding: 16px 20px;
    box-shadow: var(--shadow-lg);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    max-width: 400px;
    z-index: 1000;
    transform: translateY(100px);
    opacity: 0;
    transition: var(--transition);
    border: 1px solid var(--border-color);
}

.toast.show {
    transform: translateY(0);
    opacity: 1;
}

.toast-content {
    display: flex;
    align-items: center;
    gap: 12px;
}

.toast-content i {
    color: var(--warning);
    font-size: 20px;
}

.toast-text {
    font-weight: 500;
    color: var(--text-primary);
}

.toast-close {
    background: none;
    border: none;
    color: var(--text-tertiary);
    font-size: 24px;
    cursor: pointer;
    line-height: 1;
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 4px;
    transition: var(--transition);
}

.toast-close:hover {
    background-color: var(--bg-tertiary);
    color: var(--text-primary);
}

/* Modal Styles */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 2000;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
}

.modal.show {
    opacity: 1;
    visibility: visible;
}

.modal-content {
    background-color: var(--bg-primary);
    border-radius: var(--radius-lg);
    width: 90%;
    max-width: 500px;
    box-shadow: var(--shadow-lg);
    transform: translateY(20px);
    transition: var(--transition);
}

.modal.show .modal-content {
    transform: translateY(0);
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 24px;
    border-bottom: 1px solid var(--border-color);
}

.modal-header h3 {
    font-size: 20px;
    font-weight: 600;
    color: var(--text-primary);
}

.modal-close {
    background: none;
    border: none;
    color: var(--text-tertiary);
    font-size: 28px;
    cursor: pointer;
    line-height: 1;
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 4px;
    transition: var(--transition);
}

.modal-close:hover {
    background-color: var(--bg-tertiary);
    color: var(--text-primary);
}

.modal-body {
    padding: 24px;
}

.modal-body p {
    margin-bottom: 20px;
    color: var(--text-secondary);
    line-height: 1.6;
}

.modal-actions {
    display: flex;
    justify-content: flex-end;
    gap: 12px;
    margin-top: 24px;
}

/* Responsive */
@media (max-width: 768px) {
    .container {
        padding: 0 16px;
    }
    
    .header {
        padding: 16px 0;
    }
    
    .logo-text {
        font-size: 24px;
    }
    
    .main-content {
        gap: 24px;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
    }
    
    .deal-stats {
        flex-direction: column;
        gap: 12px;
    }
    
    .chat-messages {
        max-height: 400px;
    }
    
    .toast {
        left: 16px;
        right: 16px;
        max-width: calc(100% - 32px);
    }
    
    .modal-content {
        width: 95%;
        margin: 0 16px;
    }
}