/* Global Styles - Professional Visa Assistance Design */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* Professional Visa Color Palette */
    --primary-50: #eff6ff;
    --primary-100: #dbeafe;
    --primary-500: #3b82f6;
    --primary-600: #2563eb;
    --primary-700: #1d4ed8;
    --primary-800: #1e40af;
    
    /* Visa Status Colors */
    --success-50: #f0fdf4;
    --success-100: #dcfce7;
    --success-500: #22c55e;
    --success-600: #16a34a;
    
    --warning-50: #fffbeb;
    --warning-100: #fef3c7;
    --warning-500: #f59e0b;
    --warning-600: #d97706;
    
    --error-50: #fef2f2;
    --error-100: #fee2e2;
    --error-500: #ef4444;
    --error-600: #dc2626;
    
    /* Neutral Colors */
    --gray-50: #f9fafb;
    --gray-100: #f3f4f6;
    --gray-200: #e5e7eb;
    --gray-300: #d1d5db;
    --gray-400: #9ca3af;
    --gray-500: #6b7280;
    --gray-600: #4b5563;
    --gray-700: #374151;
    --gray-800: #1f2937;
    --gray-900: #111827;
    
    --white: #ffffff;
    --text: var(--gray-900);
    --text-muted: var(--gray-600);
    --border: var(--gray-200);
    --bg: var(--gray-50);
    --card-bg: var(--white);
    
    /* Typography */
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    
    /* Spacing System */
    --space-1: 0.25rem;
    --space-2: 0.5rem;
    --space-3: 0.75rem;
    --space-4: 1rem;
    --space-5: 1.25rem;
    --space-6: 1.5rem;
    --space-8: 2rem;
    --space-10: 2.5rem;
    --space-12: 3rem;
    
    /* Border Radius */
    --radius-sm: 0.375rem;
    --radius: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-2xl: 1.5rem;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow: 0 1px 3px 0 rgb(0 0 0 / 0.1), 0 1px 2px -1px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
}

body {
    font-family: var(--font-sans);
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
    height: 100vh;
    overflow: hidden;
    -webkit-font-smoothing: antialiased;
}

.app-container {
    display: flex;
    flex-direction: column;
    height: 100vh;
    background: var(--card-bg);
    box-shadow: var(--shadow-xl);
    overflow: hidden;
}

/* Header - Compact Professional Design */
.header {
    background: linear-gradient(135deg, var(--primary-600), var(--primary-700));
    color: var(--white);
    padding: var(--space-3) var(--space-6);
    box-shadow: var(--shadow-lg);
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--space-4);
}

.logo-icon {
    width: 36px;
    height: 36px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: var(--radius-xl);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    color: var(--white);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.logo-text h1 {
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--white);
    margin: 0;
    letter-spacing: -0.025em;
}

.logo-text .tagline {
    font-size: 0.8rem;
    color: rgba(255, 255, 255, 0.8);
    font-weight: 500;
    margin-top: -2px;
}

.status-badge {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    background: rgba(255, 255, 255, 0.15);
    padding: var(--space-2) var(--space-4);
    border-radius: 999px;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--white);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.status-indicator {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--success-400);
    box-shadow: 0 0 0 2px rgba(34, 197, 94, 0.2);
    animation: pulse 2s infinite;
}

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

/* Main Layout - Professional Consultation Style */
.main-layout {
    flex: 1;
    display: flex;
    overflow: hidden;
    background: linear-gradient(135deg, var(--gray-50) 0%, var(--white) 100%);
}

/* Sidebar - Compact Resource Panel */
.sidebar {
    width: 280px;
    background: var(--white);
    border-right: 1px solid var(--border);
    overflow-y: auto;
    padding: var(--space-4);
    flex-shrink: 0;
    box-shadow: var(--shadow);
}

.sidebar-section {
    margin-bottom: var(--space-5);
    background: var(--white);
    border-radius: var(--radius-xl);
    padding: var(--space-4);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--gray-100);
    transition: all 0.3s ease;
}

.sidebar-section:hover {
    box-shadow: var(--shadow);
    transform: translateY(-1px);
}

.sidebar-section:last-child {
    margin-bottom: 0;
}

.section-header {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    margin-bottom: var(--space-4);
    padding-bottom: var(--space-3);
    border-bottom: 2px solid var(--gray-100);
}

.section-header h3 {
    font-size: 0.95rem;
    font-weight: 700;
    color: var(--text);
    margin: 0;
    letter-spacing: -0.01em;
}

.section-icon {
    font-size: 1.1rem;
    color: var(--primary-600);
    filter: drop-shadow(0 1px 2px rgba(59, 130, 246, 0.2));
}

/* Destination Buttons - Professional Cards */
.destinations-grid {
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
}

.destination-btn {
    display: flex;
    align-items: center;
    gap: var(--space-4);
    padding: var(--space-4) var(--space-5);
    background: var(--white);
    border: 2px solid var(--gray-100);
    border-radius: var(--radius-xl);
    cursor: pointer;
    transition: all 0.3s ease;
    color: var(--text);
    text-align: left;
    min-height: 70px;
    position: relative;
    overflow: hidden;
    width: 100%;
}

.destination-btn:hover {
    border-color: var(--primary-300);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
    background: var(--primary-50);
}

.destination-btn.active {
    background: linear-gradient(135deg, var(--primary-500), var(--primary-600));
    border-color: var(--primary-600);
    color: var(--white);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.destination-flag {
    font-size: 2rem;
    flex-shrink: 0;
}

.destination-info {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: var(--space-1);
}

.destination-name {
    font-weight: 700;
    font-size: 0.95rem;
    line-height: 1.3;
}

.destination-visa {
    font-weight: 500;
    font-size: 0.8rem;
    color: var(--text-muted);
    opacity: 0.8;
}

.destination-btn.active .destination-visa {
    color: rgba(255, 255, 255, 0.8);
}

.destination-status {
    padding: var(--space-1) var(--space-2);
    border-radius: var(--radius);
    font-size: 0.7rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.destination-status.popular {
    background: var(--warning-100);
    color: var(--warning-600);
}

.destination-status.eu {
    background: var(--primary-100);
    color: var(--primary-600);
}

.destination-status:not(.popular):not(.eu) {
    background: var(--success-100);
    color: var(--success-600);
}

/* Scenario Questions - Professional Cards */
.scenario-questions {
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
}

.scenario-btn {
    display: flex;
    align-items: center;
    gap: var(--space-4);
    padding: var(--space-4) var(--space-5);
    background: var(--white);
    border: 2px solid var(--gray-100);
    border-radius: var(--radius-xl);
    cursor: pointer;
    transition: all 0.3s ease;
    color: var(--text);
    text-align: left;
    min-height: 65px;
    position: relative;
    overflow: hidden;
    width: 100%;
}

.scenario-btn::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    width: 4px;
    height: 100%;
    background: var(--primary-500);
    transform: scaleY(0);
    transition: transform 0.3s ease;
    transform-origin: bottom;
}

.scenario-btn:hover::before {
    transform: scaleY(1);
}

.scenario-btn:hover {
    border-color: var(--primary-300);
    transform: translateX(6px);
    box-shadow: var(--shadow);
    background: var(--primary-50);
}

.scenario-badge {
    padding: var(--space-1) var(--space-2);
    background: var(--primary-100);
    color: var(--primary-700);
    border-radius: var(--radius);
    font-size: 0.65rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    flex-shrink: 0;
}

.scenario-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: var(--space-1);
}

.scenario-title {
    font-weight: 700;
    font-size: 0.9rem;
    color: var(--text);
    line-height: 1.3;
}

.scenario-desc {
    font-weight: 500;
    font-size: 0.8rem;
    color: var(--text-muted);
    line-height: 1.2;
}

.scenario-arrow {
    color: var(--primary-500);
    font-weight: bold;
    font-size: 1.1rem;
    opacity: 0;
    transition: all 0.3s ease;
    transform: translateX(-10px);
}

.scenario-btn:hover .scenario-arrow {
    opacity: 1;
    transform: translateX(0);
}

/* Resource Library - Professional Links */
.resource-guides {
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
}

.resource-link {
    display: flex;
    align-items: center;
    gap: var(--space-4);
    padding: var(--space-4) var(--space-5);
    background: var(--white);
    border: 2px solid var(--gray-100);
    border-radius: var(--radius-xl);
    cursor: pointer;
    transition: all 0.3s ease;
    text-decoration: none;
    color: var(--text);
    min-height: 60px;
    position: relative;
    overflow: hidden;
}

.resource-link::after {
    content: '→';
    position: absolute;
    right: var(--space-5);
    opacity: 0;
    transform: translateX(-10px);
    transition: all 0.3s ease;
    color: var(--primary-500);
    font-weight: bold;
    font-size: 1.1rem;
}

.resource-link:hover {
    border-color: var(--primary-300);
    text-decoration: none;
    transform: translateX(6px);
    box-shadow: var(--shadow);
    background: linear-gradient(135deg, var(--primary-50), var(--white));
}

.resource-link:hover::after {
    opacity: 1;
    transform: translateX(0);
}

.resource-link.comprehensive {
    border-color: var(--warning-300);
    background: linear-gradient(135deg, var(--warning-50), var(--white));
}

.resource-link.comprehensive:hover {
    border-color: var(--warning-400);
    background: linear-gradient(135deg, var(--warning-100), var(--warning-50));
}

.resource-icon {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gray-100);
    border-radius: var(--radius-lg);
    transition: all 0.3s ease;
    font-size: 1.2rem;
    flex-shrink: 0;
}

.resource-link:hover .resource-icon {
    background: var(--primary-100);
    transform: scale(1.1);
}

.resource-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: var(--space-1);
}

.resource-title {
    font-weight: 700;
    font-size: 0.95rem;
    color: var(--text);
    line-height: 1.3;
}

.resource-meta {
    font-weight: 500;
    font-size: 0.8rem;
    color: var(--text-muted);
    line-height: 1.2;
}

/* Chat Area - Professional Consultation Interface */
.chat-area {
    flex: 1;
    display: flex;
    flex-direction: column;
    background: transparent;
    position: relative;
}

/* Welcome Screen - Compact Professional Design */
.welcome-screen {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-6);
    background: var(--white);
    margin: var(--space-4);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--gray-100);
}

.visa-checklist-welcome {
    max-width: 700px;
    text-align: center;
}

.welcome-header {
    margin-bottom: var(--space-6);
}

.passport-icon {
    font-size: 3rem;
    margin-bottom: var(--space-4);
    filter: drop-shadow(0 4px 8px rgba(59, 130, 246, 0.3));
}

.visa-checklist-welcome h2 {
    font-size: 2rem;
    font-weight: 800;
    color: var(--text);
    margin-bottom: var(--space-3);
    line-height: 1.2;
    letter-spacing: -0.025em;
}

.welcome-subtitle {
    font-size: 1rem;
    color: var(--text-muted);
    line-height: 1.5;
    font-weight: 500;
}

.process-steps {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-4);
    margin-bottom: var(--space-6);
}

.step-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: var(--space-4);
    background: var(--gray-50);
    border-radius: var(--radius-lg);
    border: 2px solid var(--gray-100);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.step-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-500), var(--primary-600));
    transform: scaleX(0);
    transition: transform 0.3s ease;
    transform-origin: left;
}

.step-card:hover::before {
    transform: scaleX(1);
}

.step-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    background: var(--white);
    border-color: var(--primary-200);
}

.step-number {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary-500), var(--primary-600));
    color: var(--white);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 1rem;
    margin-bottom: var(--space-3);
    box-shadow: 0 4px 12px rgba(59, 130, 246, 0.3);
}

.step-content {
    text-align: center;
}

.step-content h3 {
    font-size: 0.95rem;
    font-weight: 700;
    color: var(--text);
    margin-bottom: var(--space-1);
    line-height: 1.3;
}

.step-content p {
    font-size: 0.8rem;
    color: var(--text-muted);
    line-height: 1.4;
    font-weight: 500;
}

.quick-actions {
    display: flex;
    justify-content: center;
}

.start-consultation-btn {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-3) var(--space-6);
    background: linear-gradient(135deg, var(--primary-500), var(--primary-600));
    color: var(--white);
    border: none;
    border-radius: var(--radius-xl);
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 6px 16px rgba(59, 130, 246, 0.3);
    border: 2px solid transparent;
}

.start-consultation-btn:hover {
    background: linear-gradient(135deg, var(--primary-600), var(--primary-700));
    transform: translateY(-2px);
    box-shadow: 0 12px 28px rgba(59, 130, 246, 0.4);
}

.start-consultation-btn:active {
    transform: translateY(0);
}

/* Chat Messages - Professional Consultation Style */
.chat-messages {
    flex: 1;
    overflow-y: auto;
    padding: var(--space-6) var(--space-8);
    display: none;
    scroll-behavior: smooth;
    background: transparent;
}

.chat-messages.active {
    display: flex;
    flex-direction: column;
    gap: var(--space-6);
}

.message {
    display: flex;
    align-items: flex-start;
    gap: var(--space-4);
    max-width: 85%;
    animation: fadeInUp 0.4s ease-out;
    margin: 0;
}

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

.message.assistant {
    align-self: flex-start;
}

.message.system {
    align-self: center;
    max-width: 70%;
}

.message-avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
    flex-shrink: 0;
    margin-top: var(--space-1);
    font-weight: 600;
    box-shadow: var(--shadow);
}

.message.user .message-avatar {
    background: linear-gradient(135deg, var(--primary-500), var(--primary-600));
    color: var(--white);
}

.message.assistant .message-avatar {
    background: linear-gradient(135deg, var(--gray-700), var(--gray-800));
    color: var(--white);
}

.message.system .message-avatar {
    background: linear-gradient(135deg, var(--success-500), var(--success-600));
    color: var(--white);
}

.message-content {
    flex: 1;
    padding: var(--space-5) var(--space-6);
    font-size: 1rem;
    line-height: 1.7;
    border-radius: 20px;
    position: relative;
    word-wrap: break-word;
    max-width: 100%;
    box-shadow: var(--shadow);
}

.message.user .message-content {
    background: linear-gradient(135deg, var(--primary-500), var(--primary-600));
    color: var(--white);
    border-radius: 20px 20px 4px 20px;
}

.message.assistant .message-content {
    background: var(--white);
    color: var(--text);
    border: 1px solid var(--gray-200);
    border-radius: 20px 20px 20px 4px;
}

.message.system .message-content {
    background: var(--gray-100);
    color: var(--text-muted);
    border-radius: 12px;
    font-style: italic;
    font-size: 0.9rem;
    border: 1px solid var(--gray-200);
}

.message-time {
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-top: var(--space-2);
    text-align: right;
    opacity: 0.7;
}

.message.user .message-time {
    color: rgba(255, 255, 255, 0.8);
}

/* Visa Input Section - Compact Interface */
.visa-input-section {
    padding: var(--space-4) var(--space-6) var(--space-5);
    background: linear-gradient(180deg, transparent 0%, rgba(249, 250, 251, 0.8) 100%);
    backdrop-filter: blur(8px);
    border-top: 1px solid rgba(229, 231, 235, 0.5);
    flex-shrink: 0;
    position: relative;
}

.input-container {
    max-width: 900px;
    margin: 0 auto;
}

.consultation-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--space-3);
    padding: 0 var(--space-1);
}

.status-indicator {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--success-600);
}

.status-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--success-500);
    animation: pulse 2s infinite;
}

.progress-info {
    font-size: 0.875rem;
    color: var(--text-muted);
    font-weight: 500;
}

.input-wrapper {
    background: var(--white);
    border: 2px solid var(--gray-200);
    border-radius: var(--radius-xl);
    padding: var(--space-4);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: var(--shadow-lg);
    position: relative;
    overflow: hidden;
}

.input-wrapper::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-500), var(--primary-600));
    opacity: 0;
    transition: opacity 0.3s ease;
}

.input-wrapper:focus-within {
    border-color: var(--primary-500);
    box-shadow: 0 20px 40px rgba(59, 130, 246, 0.15), 0 8px 16px rgba(59, 130, 246, 0.1);
    transform: translateY(-2px);
}

.input-wrapper:focus-within::before {
    opacity: 1;
}

.input-label {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    margin-bottom: var(--space-3);
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--text);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.input-label svg {
    color: var(--primary-500);
}

.input-group {
    position: relative;
}

#messageInput {
    width: 100%;
    min-height: 80px;
    max-height: 150px;
    padding: var(--space-4);
    padding-bottom: 60px;
    border: none;
    border-radius: var(--radius-lg);
    font-family: var(--font-sans);
    font-size: 0.95rem;
    line-height: 1.5;
    resize: none;
    background: var(--gray-50);
    color: var(--text);
    outline: none;
    overflow-y: auto;
    scrollbar-width: thin;
    scrollbar-color: rgba(0, 0, 0, 0.2) transparent;
    border: 1px solid var(--gray-200);
    transition: all 0.3s ease;
}

#messageInput:focus {
    background: var(--white);
    border-color: var(--primary-300);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

#messageInput::-webkit-scrollbar {
    width: 6px;
}

#messageInput::-webkit-scrollbar-track {
    background: transparent;
}

#messageInput::-webkit-scrollbar-thumb {
    background: rgba(0, 0, 0, 0.2);
    border-radius: 3px;
}

#messageInput::placeholder {
    color: var(--text-muted);
    font-size: 1rem;
    font-weight: 400;
}

.input-actions {
    position: absolute;
    bottom: var(--space-3);
    left: var(--space-4);
    right: var(--space-4);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.input-info {
    display: flex;
    align-items: center;
    gap: var(--space-4);
}

.char-count {
    font-size: 0.75rem;
    color: var(--text-muted);
    padding: var(--space-1) var(--space-3);
    background: var(--white);
    border-radius: var(--radius-lg);
    font-weight: 500;
    border: 1px solid var(--gray-200);
}

.input-tip {
    font-size: 0.75rem;
    color: var(--text-muted);
    font-weight: 500;
}

.send-consultation-btn {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-2) var(--space-4);
    border-radius: var(--radius-lg);
    border: none;
    background: linear-gradient(135deg, var(--primary-500), var(--primary-600));
    color: var(--white);
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    font-weight: 600;
    font-size: 0.85rem;
    box-shadow: 0 3px 8px rgba(59, 130, 246, 0.3);
    min-width: auto;
    flex-shrink: 0;
}

.send-consultation-btn:hover {
    background: linear-gradient(135deg, var(--primary-600), var(--primary-700));
    transform: scale(1.05);
    box-shadow: 0 6px 16px rgba(59, 130, 246, 0.4);
}

.send-consultation-btn:active {
    transform: scale(0.95);
}

.send-consultation-btn:disabled {
    opacity: 0.4;
    cursor: not-allowed;
    transform: none;
    box-shadow: 0 2px 8px rgba(59, 130, 246, 0.15);
    background: var(--gray-400);
}

.input-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: var(--space-3);
    padding: 0 var(--space-1);
}

.quick-tips {
    flex: 1;
    display: flex;
    align-items: center;
    gap: var(--space-3);
}

.tip-label {
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--text);
}

.tips-list {
    display: flex;
    gap: var(--space-2);
    flex-wrap: wrap;
}

.tip {
    font-size: 0.75rem;
    color: var(--text-muted);
    background: var(--gray-100);
    padding: var(--space-1) var(--space-2);
    border-radius: var(--radius);
    font-weight: 500;
}

.settings-button {
    width: 44px;
    height: 44px;
    border-radius: var(--radius-xl);
    border: 1px solid var(--border);
    background: var(--card-bg);
    color: var(--text-muted);
    cursor: pointer;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 44px;
    flex-shrink: 0;
}

.settings-button:hover {
    background: var(--gray-50);
    border-color: var(--primary-500);
    color: var(--primary-500);
}

/* Settings Modal - Professional Design */
.settings-modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    backdrop-filter: blur(4px);
}

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

.settings-content {
    background: var(--card-bg);
    border-radius: var(--radius-2xl);
    padding: var(--space-8);
    max-width: 520px;
    width: 90%;
    max-height: 80vh;
    overflow-y: auto;
    box-shadow: var(--shadow-xl);
    border: 1px solid var(--gray-200);
}

.settings-header {
    margin-bottom: var(--space-8);
    text-align: center;
}

.settings-header h3 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text);
    margin-bottom: var(--space-2);
}

.settings-header p {
    font-size: 1rem;
    color: var(--text-muted);
}

.settings-body {
    margin-bottom: var(--space-8);
}

.form-group {
    margin-bottom: var(--space-6);
}

.form-group label {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--text);
    margin-bottom: var(--space-3);
}

.form-group label svg {
    color: var(--primary-500);
}

.form-group select {
    width: 100%;
    padding: var(--space-4);
    border: 2px solid var(--gray-200);
    border-radius: var(--radius-xl);
    background: var(--card-bg);
    color: var(--text);
    font-size: 0.95rem;
    font-weight: 500;
    transition: all 0.3s ease;
}

.form-group select:focus {
    outline: none;
    border-color: var(--primary-500);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

.button-group {
    display: flex;
    gap: var(--space-4);
    justify-content: flex-end;
}

.btn {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-4) var(--space-6);
    border: 2px solid var(--border);
    border-radius: var(--radius-xl);
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
}

.btn-primary {
    background: var(--primary-500);
    color: var(--white);
    border-color: var(--primary-500);
}

.btn-primary:hover {
    background: var(--primary-600);
    border-color: var(--primary-600);
    transform: translateY(-1px);
    box-shadow: var(--shadow);
}

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

.btn-secondary:hover {
    background: var(--gray-50);
    transform: translateY(-1px);
    box-shadow: var(--shadow);
}

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

/* Mobile Responsive */
@media (max-width: 768px) {
    .main-layout {
        flex-direction: column;
    }
    
    .sidebar {
        width: 100%;
        height: auto;
        border-right: none;
        border-bottom: 1px solid var(--border);
        padding: var(--space-4);
        max-height: 40vh;
        overflow-y: auto;
    }
}