:root {
    --bg-dark: #0b0f19;
    --card-bg: rgba(22, 28, 45, 0.65);
    --border-color: rgba(255, 255, 255, 0.08);
    --text-primary: #f3f4f6;
    --text-muted: #9ca3af;
    
    --vinted-accent: #09b1b1;
    --vinted-bg: rgba(9, 177, 177, 0.1);
    --vinted-border: rgba(9, 177, 177, 0.25);
    
    --depop-accent: #ff4747;
    --depop-bg: rgba(255, 71, 71, 0.1);
    --depop-border: rgba(255, 71, 71, 0.25);
    
    --ebay-accent: #e5a93b;
    --ebay-bg: rgba(229, 169, 59, 0.1);
    --ebay-border: rgba(229, 169, 59, 0.25);

    --primary-glow: rgba(59, 130, 246, 0.5);
    --font-family: 'Outfit', sans-serif;
}

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

body {
    background-color: var(--bg-dark);
    color: var(--text-primary);
    font-family: var(--font-family);
    min-height: 100vh;
    display: flex;
    justify-content: center;
    overflow-x: hidden;
    position: relative;
}

/* Glassy Ambient Blobs */
.glass-bg {
    position: absolute;
    width: 600px;
    height: 600px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(9, 177, 177, 0.15) 0%, rgba(59, 130, 246, 0.05) 50%, transparent 100%);
    top: -150px;
    left: -100px;
    z-index: -1;
    filter: blur(80px);
    pointer-events: none;
}

.glass-bg-2 {
    position: absolute;
    width: 500px;
    height: 500px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(255, 71, 71, 0.1) 0%, rgba(229, 169, 59, 0.03) 60%, transparent 100%);
    bottom: -100px;
    right: -100px;
    z-index: -1;
    filter: blur(80px);
    pointer-events: none;
}

/* App Container */
.app-container {
    width: 100%;
    max-width: 1200px;
    padding: 2.5rem 1.5rem;
    display: flex;
    flex-direction: column;
    gap: 2rem;
    z-index: 1;
}

/* Header */
header {
    text-align: center;
    margin-bottom: 0.5rem;
}

.logo {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    font-size: 2rem;
    font-weight: 700;
    color: #fff;
    margin-bottom: 0.25rem;
}

.logo span {
    background: linear-gradient(135deg, var(--vinted-accent), var(--depop-accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.logo-icon {
    font-size: 1.8rem;
    color: var(--vinted-accent);
    animation: pulse 3s infinite alternate;
}

.subtitle {
    color: var(--text-muted);
    font-size: 1rem;
    font-weight: 300;
}

/* Dashboard Grid */
.dashboard {
    display: grid;
    grid-template-columns: 1.1fr 1.9fr;
    gap: 1.5rem;
    align-items: start;
}

/* Universal Card design */
.card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 1.75rem;
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
}

.section-title {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: #fff;
}

/* Form Styling */
.input-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
}

.input-group label {
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-muted);
}

.custom-select {
    background: rgba(11, 15, 25, 0.8);
    border: 1px solid var(--border-color);
    color: #fff;
    padding: 0.75rem 1rem;
    border-radius: 8px;
    font-family: inherit;
    font-size: 0.95rem;
    outline: none;
    cursor: pointer;
    transition: all 0.3s ease;
}

.custom-select:focus {
    border-color: var(--vinted-accent);
    box-shadow: 0 0 10px rgba(9, 177, 177, 0.15);
}

/* Range Inputs */
.range-container {
    margin-bottom: 1.75rem;
}

.range-labels {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0.25rem;
}

.value-display {
    font-size: 1.3rem;
    font-weight: 700;
    color: #fff;
    background: rgba(255, 255, 255, 0.05);
    padding: 0.2rem 0.6rem;
    border-radius: 6px;
}

.custom-range {
    -webkit-appearance: none;
    appearance: none;
    width: 100%;
    height: 6px;
    border-radius: 3px;
    background: rgba(255, 255, 255, 0.1);
    outline: none;
    transition: background 0.3s;
}

.custom-range::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background: #fff;
    cursor: pointer;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.5);
    transition: transform 0.2s ease, background-color 0.2s;
}

.custom-range::-webkit-slider-thumb:hover {
    transform: scale(1.2);
    background-color: var(--vinted-accent);
}

.numeric-fallback {
    margin-top: 0.5rem;
    background: rgba(11, 15, 25, 0.8);
    border: 1px solid var(--border-color);
    color: #fff;
    padding: 0.4rem 0.75rem;
    border-radius: 6px;
    font-family: inherit;
    font-size: 0.9rem;
    outline: none;
    width: 100px;
    align-self: flex-end;
}

/* Shipping Toggles */
.shipping-section {
    border-top: 1px solid var(--border-color);
    padding-top: 1.25rem;
    margin-top: 1.25rem;
    margin-bottom: 1.25rem;
}

.shipping-section h3 {
    font-size: 1rem;
    font-weight: 500;
    margin-bottom: 0.75rem;
    color: var(--text-muted);
}

.toggle-group {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 1rem;
}

.toggle-switch {
    position: relative;
    display: inline-block;
    width: 44px;
    height: 22px;
}

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

.slider-toggle {
    position: absolute;
    cursor: pointer;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(255, 255, 255, 0.1);
    transition: .3s;
    border-radius: 34px;
}

.slider-toggle:before {
    position: absolute;
    content: "";
    height: 16px;
    width: 16px;
    left: 3px;
    bottom: 3px;
    background-color: white;
    transition: .3s;
    border-radius: 50%;
}

.toggle-switch input:checked + .slider-toggle {
    background-color: var(--vinted-accent);
}

.toggle-switch input:checked + .slider-toggle:before {
    transform: translateX(22px);
}

.toggle-label {
    font-size: 0.95rem;
    color: #fff;
    cursor: pointer;
}

.price-input-wrapper {
    position: relative;
    display: flex;
    align-items: center;
}

.currency-symbol {
    position: absolute;
    left: 1rem;
    color: var(--text-muted);
    font-size: 0.95rem;
}

.price-input-wrapper input {
    width: 100%;
    background: rgba(11, 15, 25, 0.8);
    border: 1px solid var(--border-color);
    color: #fff;
    padding: 0.75rem 1rem 0.75rem 2rem;
    border-radius: 8px;
    font-family: inherit;
    font-size: 0.95rem;
    outline: none;
}

.hidden {
    display: none !important;
}

/* Results Panel */
.results-panel {
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
}

/* Comparison Cards Grid */
.comparison-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1rem;
}

.platform-card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
}

.platform-card:hover {
    transform: translateY(-4px);
}

/* Active Highlight States */
.platform-card.vinted-theme:hover {
    border-color: var(--vinted-border);
    box-shadow: 0 10px 25px rgba(9, 177, 177, 0.1);
}
.platform-card.depop-theme:hover {
    border-color: var(--depop-border);
    box-shadow: 0 10px 25px rgba(255, 71, 71, 0.1);
}
.platform-card.ebay-theme:hover {
    border-color: var(--ebay-border);
    box-shadow: 0 10px 25px rgba(229, 169, 59, 0.1);
}

.platform-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 1.25rem;
}

.brand {
    display: flex;
    align-items: center;
    gap: 0.4rem;
}

.brand-logo-icon {
    font-size: 1.1rem;
}

.vinted-theme .brand-logo-icon { color: var(--vinted-accent); }
.depop-theme .brand-logo-icon { color: var(--depop-accent); }
.ebay-theme .brand-logo-icon { color: var(--ebay-accent); }

.platform-header h3 {
    font-size: 1.1rem;
    font-weight: 600;
    color: #fff;
}

.badge {
    font-size: 0.75rem;
    padding: 0.2rem 0.5rem;
    border-radius: 6px;
    font-weight: 500;
}

.vinted-theme .badge { background: var(--vinted-bg); color: var(--vinted-accent); border: 1px solid var(--vinted-border); }
.depop-theme .badge { background: var(--depop-bg); color: var(--depop-accent); border: 1px solid var(--depop-border); }
.ebay-theme .badge { background: var(--ebay-bg); color: var(--ebay-accent); border: 1px solid var(--ebay-border); }

.profit-main {
    margin-bottom: 1.25rem;
}

.profit-label {
    font-size: 0.8rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 0.25rem;
}

.profit-value {
    font-size: 2rem;
    font-weight: 700;
    color: #fff;
}

.details-list {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    border-top: 1px solid var(--border-color);
    padding-top: 0.75rem;
}

.detail-row {
    display: flex;
    justify-content: space-between;
    font-size: 0.85rem;
    color: var(--text-muted);
}

.detail-row .highlight {
    color: #fff;
    font-weight: 600;
}

/* Best Deal Banner */
.best-deal-alert {
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.15) 0%, rgba(9, 177, 177, 0.1) 100%);
    border: 1px solid rgba(59, 130, 246, 0.25);
    border-radius: 12px;
    padding: 1.25rem 1.5rem;
    display: flex;
    align-items: center;
    gap: 1rem;
    animation: subtle-pulse 4s infinite alternate;
}

.trophy-icon {
    font-size: 1.5rem;
    color: var(--ebay-accent);
}

.best-deal-alert h4 {
    font-size: 1rem;
    font-weight: 600;
    color: #fff;
    margin-bottom: 0.15rem;
}

.best-deal-alert p {
    font-size: 0.9rem;
    color: var(--text-muted);
}

/* Share Offer Card */
.share-box h3 {
    font-size: 1.1rem;
    color: #fff;
    margin-bottom: 0.4rem;
}

.share-desc {
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-bottom: 1rem;
}

.quote-preview {
    background: rgba(11, 15, 25, 0.8);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 1rem;
    font-family: monospace;
    font-size: 0.85rem;
    color: var(--text-primary);
    white-space: pre-wrap;
    margin-bottom: 1rem;
    max-height: 150px;
    overflow-y: auto;
}

.btn {
    width: 100%;
    padding: 0.85rem;
    border-radius: 8px;
    font-family: inherit;
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    border: none;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

.btn-primary {
    background: linear-gradient(135deg, var(--vinted-accent), var(--depop-accent));
    color: #fff;
    box-shadow: 0 4px 15px rgba(255, 71, 71, 0.2);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(255, 71, 71, 0.3);
}

/* SEO Info Section */
.seo-info h2 {
    font-size: 1.3rem;
    color: #fff;
    margin-bottom: 1.25rem;
}

.seo-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
}

.seo-grid div h3 {
    font-size: 1rem;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.seo-grid div p {
    font-size: 0.85rem;
    color: var(--text-muted);
    line-height: 1.5;
}

/* Footer */
footer {
    text-align: center;
    margin-top: 1rem;
    border-top: 1px solid var(--border-color);
    padding-top: 1.5rem;
}

footer p {
    font-size: 0.8rem;
    color: var(--text-muted);
}

/* Animations */
@keyframes pulse {
    0% { transform: scale(1); opacity: 0.9; }
    100% { transform: scale(1.05); opacity: 1; }
}

@keyframes subtle-pulse {
    0% { box-shadow: 0 0 10px rgba(59, 130, 246, 0.05); }
    100% { box-shadow: 0 0 20px rgba(59, 130, 246, 0.15); }
}

/* Responsive Media Queries */
@media (max-width: 900px) {
    .dashboard {
        grid-template-columns: 1fr;
    }
    .seo-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 600px) {
    .comparison-grid {
        grid-template-columns: 1fr;
    }
    .app-container {
        padding: 1.5rem 1rem;
    }
}