:root {
    --bg-primary: #f8fafc;
    --bg-secondary: #f1f5f9;
    --bg-elevated: #ffffff;
    --glass-bg: rgba(0, 0, 0, 0.95);
    --glass-border: rgba(0, 0, 0, 0.05);
    --accent: #111827;
    --accent-glow: rgba(0, 0, 0, 0.1);
    --danger: #ef4444;
    --warning: #f59e0b;
    --text-primary: #0f172a;
    --text-secondary: #475569;
    --text-muted: #64748b;
    --radius: 16px;
    --radius-sm: 12px;
    --font: 'Red Hat Display', sans-serif;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    
    --bg-card: #ffffff;
    --border: rgba(0, 0, 0, 0.05);
    --border-hover: rgba(0, 0, 0, 0.1);
    
    --accent-purple: #8b5cf6;
    --accent-pink: #ec4899;
    --accent-orange: #f59e0b;
    --accent-blue: #3b82f6;
    --accent-green: #10b981;
    --success: #10b981;
    
    --gradient-purple: linear-gradient(135deg, #a78bfa 0%, #f472b6 100%);
}

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

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

/* Header */
.header {
    position: sticky;
    top: 0;
    z-index: 100;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.75rem 1rem;
    background: rgba(5, 5, 8, 0.95);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border);
}

.header-center {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.header h1 {
    font-size: 1.1rem;
    font-weight: 600;
    letter-spacing: 1px;
}

.step-indicator {
    font-size: 0.75rem;
    color: var(--text-muted);
}

.back-btn, .icon-btn {
    width: 40px;
    height: 40px;
    background: rgba(0, 0, 0, 0.05);
    border: 1px solid var(--border);
    border-radius: 10px;
    color: var(--text);
    display: flex;
    align-items: center;
    justify-content: center;
    text-decoration: none;
    cursor: pointer;
    transition: all 0.3s ease;
}

.back-btn:hover, .icon-btn:hover {
    border-color: var(--sell);
    color: var(--sell);
}

/* Progress Bar */
.progress-bar {
    height: 3px;
    background: var(--border);
    position: relative;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(to right, var(--sell), var(--warning));
    width: 25%;
    transition: width 0.4s ease;
}

/* Main */
.main {
    padding: 1.5rem 1rem;
    padding-bottom: 2rem;
}

/* Step Styles */
.step {
    animation: slideIn 0.4s ease;
}

.step.hidden {
    display: none;
}

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

.step-title {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.step-subtitle {
    color: var(--text-muted);
    font-size: 0.95rem;
    margin-bottom: 1.5rem;
}

/* Category Grid */
.category-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
}

.category-card {
    position: relative;
    cursor: pointer;
}

.category-card input {
    position: absolute;
    opacity: 0;
}

.category-content {
    background: var(--card-bg);
    border: 2px solid var(--border);
    border-radius: 16px;
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.75rem;
    transition: all 0.3s ease;
}

.category-card input:checked + .category-content {
    border-color: var(--sell);
    background: rgba(255, 0, 110, 0.1);
    box-shadow: 0 0 20px var(--sell-glow);
}

.category-content i {
    font-size: 1.75rem;
    color: var(--text-muted);
    transition: color 0.3s ease;
}

.category-card input:checked + .category-content i {
    color: var(--sell);
}

.category-content span {
    font-weight: 600;
}

/* Form Elements */
.form-group {
    margin-bottom: 1.25rem;
}

.form-group label {
    display: block;
    font-size: 0.9rem;
    font-weight: 500;
    margin-bottom: 0.5rem;
}

.form-group input,
.form-group select {
    width: 100%;
    padding: 1rem;
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 12px;
    color: var(--text);
    font-family: var(--font);
    font-size: 1rem;
    outline: none;
    transition: all 0.3s ease;
}

.form-group input:focus,
.form-group select:focus {
    border-color: var(--sell);
}

.form-group input::placeholder {
    color: var(--text-muted);
}

.input-hint {
    display: block;
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-top: 0.35rem;
}

.form-row {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
}

/* Upload Area */
.upload-area {
    border: 2px dashed var(--border);
    border-radius: 12px;
    padding: 2rem;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.upload-area:hover {
    border-color: var(--sell);
    background: rgba(255, 0, 110, 0.05);
}

.upload-placeholder i {
    font-size: 2.5rem;
    color: var(--text-muted);
    margin-bottom: 0.5rem;
    display: block;
}

.upload-placeholder span {
    display: block;
    font-weight: 600;
    margin-bottom: 0.25rem;
}

.upload-placeholder small {
    color: var(--text-muted);
    font-size: 0.8rem;
}

.upload-preview {
    position: relative;
}

.upload-preview img {
    width: 100%;
    max-height: 200px;
    object-fit: cover;
    border-radius: 8px;
}

.remove-file {
    position: absolute;
    top: -10px;
    right: -10px;
    width: 30px;
    height: 30px;
    border-radius: 50%;
    background: var(--error);
    border: none;
    color: #fff;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* Pricing Section */
.pricing-section {
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 1.25rem;
    margin-bottom: 1.5rem;
}

.price-validation {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 0.5rem;
    font-size: 0.8rem;
}

.max-price {
    color: var(--accent);
}

.error-msg {
    color: var(--error);
    display: flex;
    align-items: center;
    gap: 0.35rem;
}

.error-msg.hidden {
    display: none;
}

.error-msg i {
    font-size: 0.9rem;
}

/* Price Breakdown */
.price-breakdown {
    margin-top: 1.25rem;
    padding-top: 1.25rem;
    border-top: 1px solid var(--border);
}

.breakdown-row {
    display: flex;
    justify-content: space-between;
    margin-bottom: 0.75rem;
    font-size: 0.9rem;
    color: var(--text-muted);
}

.breakdown-row.total {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--buy);
    padding-top: 0.75rem;
    border-top: 1px solid var(--border);
}

/* Savings Indicator */
.savings-indicator {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-top: 1rem;
    padding: 0.75rem;
    background: rgba(0, 255, 136, 0.1);
    border: 1px solid rgba(0, 255, 136, 0.3);
    border-radius: 8px;
    font-size: 0.85rem;
}

.savings-indicator i {
    color: var(--buy);
}

.savings-indicator strong {
    color: var(--buy);
}

/* Buttons */
.btn-next,
.btn-submit {
    width: 100%;
    padding: 1rem;
    border: none;
    border-radius: 12px;
    font-family: var(--font);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    transition: all 0.3s ease;
}

.btn-next {
    background: linear-gradient(135deg, var(--sell), #ff4d9e);
    color: #fff;
    box-shadow: 0 10px 30px var(--sell-glow);
}

.btn-next:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: 0 15px 40px var(--sell-glow);
}

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

.btn-submit {
    background: linear-gradient(135deg, var(--buy), #00cc6a);
    color: #000;
    font-size: 1.1rem;
    box-shadow: 0 10px 30px rgba(0, 255, 136, 0.3);
}

.btn-submit:hover {
    transform: translateY(-2px);
}

/* Terms */
.terms-box {
    margin-bottom: 1.5rem;
}

.checkbox-label {
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
    cursor: pointer;
    font-size: 0.85rem;
    color: var(--text-muted);
}

.checkbox-label input {
    margin-top: 0.2rem;
}

/* Listing Preview */
.listing-preview {
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 1rem;
    margin-bottom: 1.5rem;
}

.listing-preview h4 {
    font-size: 0.9rem;
    margin-bottom: 0.75rem;
    color: var(--text-muted);
}

.preview-content {
    font-size: 0.85rem;
    line-height: 1.6;
}

.preview-content strong {
    color: var(--sell);
}

/* Success Screen */
.success-screen {
    text-align: center;
    padding: 2rem 1rem;
}

.success-screen.hidden {
    display: none;
}

.success-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--buy), #00cc6a);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
    font-size: 2.5rem;
    color: #000;
    animation: scaleIn 0.5s ease;
}

@keyframes scaleIn {
    from { transform: scale(0); }
    to { transform: scale(1); }
}

.success-screen h2 {
    font-size: 1.75rem;
    margin-bottom: 0.5rem;
}

.success-screen > p {
    color: var(--text-muted);
    margin-bottom: 1.5rem;
}

.success-details {
    background: var(--card-bg);
    border-radius: 12px;
    padding: 1rem;
    margin-bottom: 1.5rem;
    text-align: left;
}

.success-buttons {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.btn-secondary,
.btn-primary {
    padding: 1rem;
    border-radius: 12px;
    font-family: var(--font);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    transition: all 0.3s ease;
}

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

.btn-primary {
    background: linear-gradient(135deg, var(--sell), #ff4d9e);
    border: none;
    color: #fff;
}

/* Responsive */
@media (max-width: 380px) {
    .category-grid {
        gap: 0.75rem;
    }
    
    .category-content {
        padding: 1.25rem 1rem;
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
}