/* SellPhone - Modern Marketplace Styles */

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* Colors */
    --primary: #3b82f6;
    --primary-hover: #2563eb;
    --secondary: #059669;
    --secondary-hover: #047857;
    --success: #10b981;
    --warning: #f59e0b;
    --danger: #ef4444;
    
    /* Neutrals */
    --background: #f8fafc;
    --foreground: #334155;
    --card: #ffffff;
    --border: #e2e8f0;
    --muted: #f1f5f9;
    --muted-foreground: #64748b;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    
    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    
    /* Border Radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    
    /* Typography */
    --font-xs: 0.75rem;
    --font-sm: 0.875rem;
    --font-base: 1rem;
    --font-lg: 1.125rem;
    --font-xl: 1.25rem;
    --font-2xl: 1.5rem;
    --font-3xl: 1.875rem;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background-color: var(--background);
    color: var(--foreground);
    line-height: 1.6;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

/* Header */
.header {
    background: var(--card);
    border-bottom: 1px solid var(--border);
    box-shadow: var(--shadow-sm);
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 4rem;
}

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

.logo-icon {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    padding: var(--spacing-sm);
    border-radius: var(--radius-md);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
}

.logo-text {
    font-size: var(--font-xl);
    font-weight: 700;
    color: var(--foreground);
}

.nav-desktop {
    display: none;
    gap: var(--spacing-xl);
}

.nav-link {
    color: var(--muted-foreground);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.2s;
}

.nav-link:hover {
    color: var(--foreground);
}

.nav-link.nav-active {
    color: var(--primary);
    font-weight: 600;
}

.nav-cta {
    display: none;
}

.mobile-menu-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    background: none;
    border: none;
    color: var(--foreground);
    cursor: pointer;
}

@media (min-width: 768px) {
    .nav-desktop {
        display: flex;
    }
    
    .nav-cta {
        display: inline-flex;
    }
    
    .mobile-menu-btn {
        display: none;
    }
}

/* Hero Banner */
.hero-banner {
    background: linear-gradient(135deg, 
        rgba(59, 130, 246, 0.1), 
        rgba(5, 150, 105, 0.1));
    border-bottom: 1px solid var(--border);
}

.hero-content {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-xl) 0;
}

.hero-icon {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    padding: var(--spacing-md);
    border-radius: var(--radius-xl);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    
}

.hero-text h1 {
    font-size: var(--font-3xl);
    font-weight: 700;
    margin-bottom: var(--spacing-xs);
}

.hero-text p {
    color: var(--muted-foreground);
}

/* Main Content */
.main-content {
    padding: var(--spacing-xl) 0;
}

.content-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-xl);
}

@media (min-width: 1024px) {
    .content-grid {
        grid-template-columns: 1fr 300px;
    }
}

/* Form Card */
.form-card {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
    box-shadow: var(--shadow-sm);
}

/* Progress Indicator */
.progress-indicator {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--spacing-xl);
    overflow-x: auto;
    padding-bottom: var(--spacing-sm);
}

.step {
    display: flex;
    flex-direction: column;
    align-items: center;
    min-width: 80px;
}

.step-number {
    width: 2rem;
    height: 2rem;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    font-size: var(--font-sm);
    margin-bottom: var(--spacing-sm);
    transition: all 0.3s;
}

.step-label {
    font-size: var(--font-xs);
    color: var(--muted-foreground);
    text-align: center;
    max-width: 80px;
}

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

.step-completed .step-number {
    background: var(--secondary);
    color: white;
}

.step-inactive .step-number {
    background: var(--muted);
    color: var(--muted-foreground);
}

.step-line {
    height: 2px;
    background: var(--border);
    flex: 1;
    margin: 0 var(--spacing-sm);
    margin-top: -1rem;
}

.step-completed + .step-line {
    background: var(--secondary);
}

/* Form Steps */
.form-steps {
    margin-bottom: var(--spacing-xl);
}

.form-step {
    display: none;
    animation: slideIn 0.3s ease-out;
}

.form-step.active {
    display: block;
}

.form-step h2 {
    font-size: var(--font-2xl);
    font-weight: 600;
    margin-bottom: var(--spacing-lg);
}

.step-description {
    color: var(--muted-foreground);
    margin-bottom: var(--spacing-lg);
}

/* Form Grid */
.form-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
}

@media (min-width: 768px) {
    .form-grid {
        grid-template-columns: 1fr 1fr;
    }
}

.form-group.full-width {
    grid-column: 1 / -1;
}

/* Form Elements */
.form-group {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

label {
    font-weight: 500;
    font-size: var(--font-sm);
    color: var(--foreground);
}

input, select, textarea {
    padding: var(--spacing-md);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    font-size: var(--font-base);
    background: var(--card);
    transition: border-color 0.2s, box-shadow 0.2s;
}

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

input:disabled, select:disabled {
    background: var(--muted);
    color: var(--muted-foreground);
    cursor: not-allowed;
}

.input-with-icon {
    position: relative;
}

.input-with-icon input {
    padding-left: 2.5rem;
}

.input-with-icon i {
    position: absolute;
    left: var(--spacing-md);
    top: 50%;
    transform: translateY(-50%);
    color: var(--muted-foreground);
    width: 1rem;
    height: 1rem;
}

/* Upload Zone */
.upload-zone {
    border: 2px dashed var(--border);
    border-radius: var(--radius-xl);
    padding: var(--spacing-2xl);
    text-align: center;
    transition: all 0.3s;
    cursor: pointer;
    margin-bottom: var(--spacing-lg);
}

.upload-zone:hover, .upload-zone.drag-over {
    border-color: var(--primary);
    background: rgba(59, 130, 246, 0.05);
}

.upload-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-md);
}

.upload-icon {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    padding: var(--spacing-md);
    border-radius: 50%;
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
}

.upload-title {
    font-size: var(--font-lg);
    font-weight: 500;
    margin-bottom: var(--spacing-xs);
}

.upload-subtitle {
    font-size: var(--font-sm);
    color: var(--muted-foreground);
}

/* Image Preview */
.image-preview {
    margin-top: var(--spacing-lg);
}

.preview-title {
    font-weight: 500;
    margin-bottom: var(--spacing-md);
}

.image-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
    gap: var(--spacing-md);
}

.image-item {
    position: relative;
    aspect-ratio: 1;
    border-radius: var(--radius-md);
    overflow: hidden;
    border: 1px solid var(--border);
    box-shadow: var(--shadow-sm);
}

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

.image-remove {
    position: absolute;
    top: -8px;
    right: -8px;
    width: 1.5rem;
    height: 1.5rem;
    background: var(--danger);
    color: white;
    border: none;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    opacity: 0;
    transition: opacity 0.2s;
    font-size: var(--font-xs);
}

.image-item:hover .image-remove {
    opacity: 1;
}

/* Checkbox */
.checkbox-group {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin: var(--spacing-lg) 0;
}

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

/* Price Guide */
.price-guide {
    background: var(--muted);
    border-radius: var(--radius-lg);
    padding: var(--spacing-md);
    margin-top: var(--spacing-lg);
}

.price-guide h4 {
    font-weight: 600;
    margin-bottom: var(--spacing-md);
}

.price-range {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-sm);
}

.price-item {
    background: var(--card);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    text-align: center;
    border: 1px solid var(--border);
}

.price-value {
    font-size: var(--font-lg);
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
}

.price-fair { color: var(--warning); }
.price-good { color: var(--primary); }
.price-excellent { color: var(--success); }

.price-label {
    font-size: var(--font-xs);
    color: var(--muted-foreground);
}

.price-note {
    font-size: var(--font-xs);
    color: var(--muted-foreground);
    text-align: center;
}

/* Privacy Settings */
.privacy-settings {
    margin: var(--spacing-lg) 0;
}

.privacy-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-md);
    background: rgba(59, 130, 246, 0.05);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border);
}

.privacy-info {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

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

.privacy-info label {
    font-weight: 500;
    margin-bottom: var(--spacing-xs);
}

.privacy-info p {
    font-size: var(--font-xs);
    color: var(--muted-foreground);
}

/* Switch */
.switch {
    position: relative;
    width: 44px;
    height: 24px;
}

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

.slider {
    position: absolute;
    cursor: pointer;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: var(--muted);
    transition: 0.4s;
    border-radius: 24px;
}

.slider:before {
    position: absolute;
    content: "";
    height: 16px;
    width: 16px;
    left: 4px;
    bottom: 4px;
    background-color: white;
    transition: 0.4s;
    border-radius: 50%;
}

input:checked + .slider {
    background-color: var(--primary);
}

input:checked + .slider:before {
    transform: translateX(20px);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md) var(--spacing-lg);
    border-radius: var(--radius-md);
    font-weight: 500;
    font-size: var(--font-sm);
    cursor: pointer;
    transition: all 0.2s;
    text-decoration: none;
    border: 1px solid transparent;
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary), var(--primary-hover));
    color: white;
    box-shadow: var(--shadow-md);
}

.btn-primary:hover:not(:disabled) {
    box-shadow: var(--shadow-lg);
    transform: translateY(-1px);
}

.btn-secondary {
    background: linear-gradient(135deg, var(--secondary), var(--secondary-hover));
    color: white;
    box-shadow: var(--shadow-md);
}

.btn-outline {
    background: var(--card);
    color: var(--foreground);
    border: 1px solid var(--border);
}

.btn-outline:hover:not(:disabled) {
    background: var(--muted);
}

/* Form Navigation */
.form-navigation {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: var(--spacing-xl);
    border-top: 1px solid var(--border);
}

/* Tips and Cards */
.tips-card, .trust-card, .security-card {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: var(--radius-xl);
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
    box-shadow: var(--shadow-sm);
}

.tips-card {
    background: rgba(59, 130, 246, 0.05);
    border-color: rgba(59, 130, 246, 0.2);
}

.trust-card {
    background: linear-gradient(135deg, 
        rgba(16, 185, 129, 0.05), 
        rgba(59, 130, 246, 0.05));
    border-color: rgba(16, 185, 129, 0.2);
}

.tips-header, .trust-header, .security-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
}

.tips-header h3, .tips-header h4,
.trust-header h3, .security-header h3 {
    font-weight: 600;
    color: var(--foreground);
}

.tips-header i, .trust-header i, .security-header i {
    color: var(--primary);
}

.tip-item {
    display: flex;
    align-items: start;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
}

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

.tip-icon {
    background: rgba(59, 130, 246, 0.1);
    padding: var(--spacing-sm);
    border-radius: var(--radius-md);
    color: var(--primary);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.tip-content h4 {
    font-weight: 500;
    font-size: var(--font-sm);
    margin-bottom: var(--spacing-xs);
}

.tip-content p {
    font-size: var(--font-xs);
    color: var(--muted-foreground);
}

.tips-list, .security-list {
    list-style: none;
    font-size: var(--font-sm);
    color: var(--muted-foreground);
}

.tips-list li, .security-list li {
    margin-bottom: var(--spacing-xs);
}

/* Stats Grid */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-md);
    margin-top: var(--spacing-md);
}

.stat-item {
    text-align: center;
    background: var(--card);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    border: 1px solid var(--border);
}

.stat-number {
    font-size: var(--font-lg);
    font-weight: 700;
    color: var(--success);
    margin-bottom: var(--spacing-xs);
}

.stat-label {
    font-size: var(--font-xs);
    color: var(--muted-foreground);
}

/* Modal */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    z-index: 1000;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-md);
}

.modal.active {
    display: flex;
}

.modal-content {
    background: var(--card);
    border-radius: var(--radius-xl);
    padding: var(--spacing-2xl);
    max-width: 500px;
    width: 100%;
    box-shadow: var(--shadow-lg);
    animation: modalSlideIn 0.3s ease-out;
}

.modal-header {
    text-align: center;
    margin-bottom: var(--spacing-xl);
}

.success-icon {
    background: linear-gradient(135deg, var(--secondary), var(--success));
    width: 4rem;
    height: 4rem;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto var(--spacing-md);
    color: white;
}

.modal-header h2 {
    font-size: var(--font-2xl);
    font-weight: 600;
    color: var(--foreground);
}

.modal-body p {
    color: var(--muted-foreground);
    text-align: center;
    margin-bottom: var(--spacing-lg);
}

.success-stats {
    background: var(--muted);
    border-radius: var(--radius-lg);
    padding: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.success-stat {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-sm) 0;
}

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

.stat-title {
    font-weight: 500;
    font-size: var(--font-sm);
}

.stat-desc {
    font-size: var(--font-xs);
    color: var(--muted-foreground);
}

.next-steps {
    margin-bottom: var(--spacing-lg);
}

.next-steps h4 {
    font-weight: 600;
    margin-bottom: var(--spacing-md);
}

.next-steps ul {
    list-style: none;
    font-size: var(--font-sm);
    color: var(--muted-foreground);
}

.next-steps li {
    margin-bottom: var(--spacing-xs);
}

.modal-actions {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.modal-actions .btn {
    width: 100%;
}

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

@keyframes modalSlideIn {
    from {
        opacity: 0;
        transform: translateY(-50px) scale(0.95);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

/* Responsive Design */
@media (max-width: 767px) {
    .container {
        padding: 0 var(--spacing-sm);
    }
    
    .form-card {
        padding: var(--spacing-md);
    }
    
    .progress-indicator {
        font-size: var(--font-xs);
    }
    
    .step {
        min-width: 60px;
    }
    
    .step-number {
        width: 1.5rem;
        height: 1.5rem;
        font-size: var(--font-xs);
    }
    
    .step-line {
        margin: 0 var(--spacing-xs);
        margin-top: -0.75rem;
    }
    
    .modal-content {
        padding: var(--spacing-lg);
        margin: var(--spacing-md);
    }
}

/* Print Styles */
@media print {
    .header, .sidebar, .form-navigation, .modal {
        display: none;
    }
    
    .main-content {
        padding: 0;
    }
    
    .form-card {
        box-shadow: none;
        border: 1px solid #000;
    }
}