:root {
    --bg-dark: #0f111a;
    --bg-card: #181b26;
    --bg-card-hover: #1f2330;
    --text-main: #e2e8f0;
    --text-muted: #94a3b8;
    
    --accent-skinport: #fa5c00; /* Skinport Orange */
    --accent-csfloat: #4f46e5; /* Indigo/Violet */
    --accent-dmarket: #10b981; /* Emerald */
    --accent-steam: #3b82f6; /* Blue */
    --accent-buff: #eab308; /* Yellow */
    
    --glow-primary: rgba(99, 102, 241, 0.15);
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    font-family: 'Inter', system-ui, -apple-system, sans-serif;
}

body {
    background-color: var(--bg-dark);
    color: var(--text-main);
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Layout */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

header {
    text-align: center;
    padding: 3rem 0 2rem;
    position: relative;
    overflow: hidden;
}

header::before {
    content: '';
    position: absolute;
    top: -50%;
    left: 50%;
    transform: translateX(-50%);
    width: 80%;
    height: 300px;
    background: radial-gradient(circle, var(--glow-primary) 0%, transparent 70%);
    pointer-events: none;
    z-index: 0;
}

h1 {
    font-size: 2.5rem;
    font-weight: 800;
    margin-bottom: 0.5rem;
    background: linear-gradient(to right, #fff, #94a3b8);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    position: relative;
    z-index: 1;
}

.subtitle {
    color: var(--text-muted);
    font-size: 1.125rem;
    position: relative;
    z-index: 1;
}

/* Controls Section */
.controls {
    background: var(--bg-card);
    border: 1px solid rgba(255,255,255,0.05);
    border-radius: 1rem;
    padding: 2rem;
    margin-bottom: 3rem;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
}

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

.input-row {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1.5rem;
}

@media (min-width: 640px) {
    .input-row {
        grid-template-columns: 2fr 1fr;
    }
}

label {
    font-weight: 600;
    font-size: 0.9rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

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

.currency-symbol {
    position: absolute;
    left: 1rem;
    color: var(--text-muted);
    pointer-events: none;
}

input[type="number"] {
    width: 100%;
    background: #0b0d14;
    border: 2px solid rgba(255,255,255,0.1);
    border-radius: 0.75rem;
    padding: 1rem 1rem 1rem 2.5rem;
    color: white;
    font-size: 1.25rem;
    font-weight: 600;
    transition: all 0.2s;
}

input[type="number"]:focus {
    outline: none;
    border-color: var(--accent-csfloat);
    box-shadow: 0 0 0 4px var(--glow-primary);
}

select {
    width: 100%;
    background: #0b0d14;
    border: 2px solid rgba(255,255,255,0.1);
    border-radius: 0.75rem;
    padding: 1rem;
    color: white;
    font-size: 1rem;
    appearance: none;
    cursor: pointer;
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 20 20'%3e%3cpath stroke='%2394a3b8' stroke-linecap='round' stroke-linejoin='round' stroke-width='1.5' d='M6 8l4 4 4-4'/%3e%3c/svg%3e");
    background-position: right 0.5rem center;
    background-repeat: no-repeat;
    background-size: 1.5em 1.5em;
}

/* Results Grid */
.results-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1.5rem;
}

@media (min-width: 768px) {
    .results-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1024px) {
    .results-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

.card {
    background: var(--bg-card);
    border-radius: 1rem;
    padding: 1.5rem;
    position: relative;
    border: 1px solid rgba(255,255,255,0.05);
    transition: transform 0.2s, box-shadow 0.2s;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.card:hover {
    transform: translateY(-4px);
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.2), 0 10px 10px -5px rgba(0, 0, 0, 0.1);
}

.card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: var(--card-accent);
}

.card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
}

.platform-name {
    font-size: 1.25rem;
    font-weight: 700;
}

.platform-fee {
    font-size: 0.875rem;
    padding: 0.25rem 0.75rem;
    border-radius: 9999px;
    background: rgba(255,255,255,0.05);
    color: var(--text-muted);
}

.payout-section {
    text-align: center;
    margin-bottom: 2rem;
    flex-grow: 1;
}

.payout-label {
    font-size: 0.875rem;
    color: var(--text-muted);
    margin-bottom: 0.5rem;
}

.payout-amount {
    font-size: 2.5rem;
    font-weight: 800;
    color: white;
    letter-spacing: -0.02em;
}

.payout-currency {
    font-size: 1.5rem;
    color: var(--text-muted);
}

.btn-cta {
    display: block;
    width: 100%;
    padding: 1rem;
    border-radius: 0.75rem;
    background: var(--card-accent);
    color: white;
    text-align: center;
    font-weight: 700;
    text-decoration: none;
    transition: filter 0.2s, transform 0.1s;
}

.btn-cta:hover {
    filter: brightness(110%);
}

.btn-cta:active {
    transform: scale(0.98);
}

/* Settings Toggle for CSFloat */
.settings-toggle {
    background: none;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    font-size: 0.875rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem;
    margin: 0 auto 1rem;
}

.settings-panel {
    background: rgba(0,0,0,0.2);
    padding: 1rem;
    border-radius: 0.5rem;
    margin-bottom: 1rem;
    font-size: 0.875rem;
    display: none;
}
.settings-panel.open {
    display: block;
}

/* Card Specific Themes */
.card-skinport { --card-accent: var(--accent-skinport); }
.card-csfloat { --card-accent: var(--accent-csfloat); }
.card-dmarket { --card-accent: var(--accent-dmarket); }
.card-steam { --card-accent: var(--accent-steam); }
.card-buff { --card-accent: var(--accent-buff); }

.card-steam .btn-cta {
    background: #334155;
    cursor: default;
}

footer {
    margin-top: auto;
    padding: 3rem 0;
    text-align: center;
    color: var(--text-muted);
    font-size: 0.875rem;
    border-top: 1px solid rgba(255,255,255,0.05);
}

/* Animations */
@keyframes pulse-green {
    0% { color: #fff; text-shadow: none; }
    50% { color: #4ade80; text-shadow: 0 0 20px rgba(74, 222, 128, 0.5); }
    100% { color: #fff; text-shadow: none; }
}

.value-changed {
    animation: pulse-green 0.5s ease;
}