:root {
    --color-bg: #1A0A14;
    --color-surface: rgba(232, 67, 147, 0.05);
    --color-surface-solid: #260F1E;
    --color-glass: rgba(253, 121, 168, 0.04);
    --color-border: rgba(232, 67, 147, 0.18);
    --color-border-focus: #E84393;
    --color-text: #F0E0EA;
    --color-text-secondary: #C89BAF;
    --color-text-muted: #7A4D66;
    --color-primary: #E84393;
    --color-primary-hover: #D63583;
    --color-primary-glow: rgba(232, 67, 147, 0.3);
    --color-secondary: #FD79A8;
    --color-accent: #00CEC9;
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-mono: 'JetBrains Mono', monospace;
    --radius: 12px;
    --radius-sm: 8px;
    --transition: 200ms cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
    font-size: 15px;
    -webkit-font-smoothing: antialiased;
}

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

.app-header {
    background: var(--color-surface-solid);
    border-bottom: 1px solid var(--color-border);
}

.header-inner {
    max-width: 800px;
    margin: 0 auto;
    padding: 0 24px;
    height: 56px;
    display: flex;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--color-primary);
}

.logo h1 {
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--color-text);
}

.app-main {
    max-width: 800px;
    margin: 0 auto;
    padding: 24px;
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 9px 18px;
    border-radius: var(--radius-sm);
    font-family: var(--font-sans);
    font-size: 0.87rem;
    font-weight: 600;
    border: none;
    cursor: pointer;
    transition: all var(--transition);
}

.btn-primary {
    background: var(--color-primary);
    color: #fff;
}

.btn-primary:hover {
    background: var(--color-primary-hover);
    box-shadow: 0 4px 16px var(--color-primary-glow);
    transform: translateY(-1px);
}

.btn-ghost {
    background: transparent;
    color: var(--color-text-secondary);
}

.btn-ghost:hover {
    color: var(--color-text);
}

.btn-sm {
    padding: 5px 10px;
    font-size: 0.78rem;
}

/* Controls */
.control-section {
    background: var(--color-surface-solid);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: 20px;
}

.control-row {
    display: flex;
    align-items: end;
    gap: 20px;
    flex-wrap: wrap;
}

.control-group {
    display: flex;
    flex-direction: column;
}

.control-group label {
    font-size: 0.72rem;
    font-weight: 600;
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 6px;
}

.range-row {
    display: flex;
    align-items: center;
    gap: 10px;
}

.range-row input[type="range"] {
    width: 180px;
    accent-color: var(--color-primary);
}

.range-val {
    font-family: var(--font-mono);
    font-weight: 700;
    color: var(--color-primary);
    font-size: 1rem;
}

.method-tag {
    padding: 8px 16px;
    background: rgba(0, 206, 201, 0.1);
    color: var(--color-accent);
    font-family: var(--font-mono);
    font-weight: 700;
    font-size: 0.9rem;
    border-radius: var(--radius-sm);
    border: 1px solid rgba(0, 206, 201, 0.2);
}

/* Output */
.output-section {
    display: flex;
    flex-direction: column;
    gap: 14px;
    animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(6px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.output-card {
    background: var(--color-surface-solid);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: 16px 20px;
}

.oc-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 10px;
}

.oc-label {
    font-size: 0.78rem;
    font-weight: 700;
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.oc-value {
    font-family: var(--font-mono);
    font-size: 0.85rem;
    color: var(--color-secondary);
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    padding: 12px 14px;
    word-break: break-all;
    line-height: 1.6;
}

.oc-meta {
    margin-top: 8px;
    font-size: 0.72rem;
    color: var(--color-text-muted);
}

/* Info */
.info-section {
    background: var(--color-surface-solid);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: 20px;
}

.info-section h2 {
    font-size: 0.9rem;
    font-weight: 700;
    margin-bottom: 10px;
}

.info-section p {
    font-size: 0.87rem;
    color: var(--color-text-secondary);
    line-height: 1.7;
}

.info-section code {
    background: var(--color-bg);
    padding: 2px 6px;
    border-radius: 4px;
    font-family: var(--font-mono);
    font-size: 0.82rem;
    color: var(--color-accent);
}

.toast {
    position: fixed;
    bottom: 24px;
    left: 50%;
    transform: translateX(-50%);
    padding: 10px 24px;
    background: var(--color-primary);
    color: #fff;
    border-radius: var(--radius-sm);
    font-size: 0.87rem;
    font-weight: 600;
    box-shadow: 0 4px 24px var(--color-primary-glow);
    z-index: 200;
    animation: toastSlide 0.3s ease;
}

@keyframes toastSlide {
    from {
        opacity: 0;
        transform: translateX(-50%) translateY(8px);
    }

    to {
        opacity: 1;
        transform: translateX(-50%) translateY(0);
    }
}

@media (max-width: 600px) {
    .control-row {
        flex-direction: column;
        align-items: stretch;
    }

    .range-row input[type="range"] {
        width: 100%;
    }

    .app-main {
        padding: 16px;
    }
}