* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    --accent-pastel: #eef2ff;
    --accent-primary: #6366f1;
}

body {
    font-family: 'Inter', sans-serif;
    background-color: #f5f5f5;
    color: #111111;
    padding: 0 0 64px;
    line-height: 1.6;
}

.container {
    max-width: 880px;
    margin: 40px auto 0;
    padding: 0 24px;
}

.tab-bar {
    position: sticky;
    top: 0;
    width: 100%;
    display: flex;
    justify-content: center;
    gap: 8px;
    padding: 16px;
    background-color: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(8px);
    border-bottom: 1px solid rgba(17, 17, 17, 0.06);
    z-index: 1000;
}

.tab-item {
    background-color: transparent;
    color: #666;
    border: none;
    border-radius: 999px;
    padding: 8px 20px;
    font-size: 0.92rem;
    letter-spacing: 0.02em;
    text-transform: lowercase;
    cursor: pointer;
    transition: all 0.2s ease;
    font-family: 'Inter', sans-serif;
    font-weight: 500;
}

.tab-item:hover {
    background-color: rgba(17, 17, 17, 0.04);
    color: #111;
}

.tab-item.active {
    background-color: var(--accent-pastel);
    color: var(--accent-primary);
}

.tab-content {
    display: none;
}

.tab-content.active {
    display: block;
}

.card {
    background-color: #ffffff;
    border: 1px solid rgba(17, 17, 17, 0.06);
    border-radius: 24px;
    padding: 32px;
    box-shadow: 0 4px 12px rgba(17, 17, 17, 0.03);
    margin-bottom: 24px;
    transition: border-color 0.2s ease;
}

.card:hover {
    border-color: rgba(99, 102, 241, 0.1);
}

.card h3 {
    font-size: 1rem;
    margin-bottom: 16px;
    color: #111111;
    text-transform: lowercase;
    font-weight: 600;
}

label {
    display: block;
    font-size: 0.85rem;
    text-transform: lowercase;
    letter-spacing: 0.02em;
    color: rgba(17, 17, 17, 0.6);
    margin-top: 16px;
    margin-bottom: 8px;
}

input,
textarea,
select {
    width: 100%;
    background-color: #fafafa;
    border: 1px solid rgba(17, 17, 17, 0.1);
    border-radius: 14px;
    padding: 14px 16px;
    font-size: 0.96rem;
    font-family: 'Inter', sans-serif;
    color: #111111;
    resize: vertical;
    transition: all 0.2s ease;
}

textarea {
    min-height: 120px;
}

input:focus,
textarea:focus,
select:focus {
    outline: none;
    border-color: var(--accent-primary);
    background-color: #fff;
    box-shadow: 0 0 0 4px var(--accent-pastel);
}

button {
    background-color: #111111;
    color: #ffffff;
    border: none;
    border-radius: 999px;
    padding: 10px 24px;
    font-size: 0.9rem;
    letter-spacing: 0.02em;
    text-transform: lowercase;
    cursor: pointer;
    transition: transform 0.2s ease, box-shadow 0.2s ease, background-color 0.2s ease;
    margin-top: 16px;
    font-family: 'Inter', sans-serif;
}

/* Toggle Styles */
.toggle-container {
    display: flex;
    background-color: #f5f5f5;
    border-radius: 999px;
    padding: 4px;
    width: fit-content;
    margin-bottom: 24px;
}

.toggle-btn {
    background: transparent;
    color: #666;
    padding: 6px 20px;
    border-radius: 999px;
    border: none;
    cursor: pointer;
    font-size: 0.9rem;
    margin-top: 0;
    transition: all 0.2s ease;
}

.toggle-btn:hover {
    color: #111;
}

.toggle-btn.active {
    background-color: #fff;
    color: var(--accent-primary);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
}

.mode-content {
    display: none;
}

.mode-content.active {
    display: block;
}

.icon-btn {
    padding: 8px;
    border-radius: 50%;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    margin-top: 0;
    margin-left: 8px;
    background-color: transparent;
    color: #666;
    box-shadow: none;
}

.icon-btn:hover {
    background-color: var(--accent-pastel);
    color: var(--accent-primary);
    transform: none;
    box-shadow: none;
}


button:hover {
    transform: translateY(-1px);
    box-shadow: 0 12px 24px rgba(17, 17, 17, 0.15);
}

.button-group {
    display: flex;
    gap: 12px;
}

.button-group button {
    flex: 1;
}

.output {
    margin-top: 20px;
    padding: 16px;
    background-color: #fafafa;
    border: 1px solid rgba(17, 17, 17, 0.1);
    border-radius: 14px;
    min-height: 60px;
    font-family: 'Inter', monospace;
    font-size: 0.9rem;
    word-break: break-all;
    white-space: pre-wrap;
    display: none;
}

.output.show {
    display: block;
}

.output.error {
    background-color: #fff5f5;
    border-color: #e53935;
    color: #e53935;
}

.output.success {
    background-color: #f1f8f4;
    border-color: #43a047;
    color: #43a047;
}

@media (max-width: 720px) {
    body {
        padding: 90px 16px 48px;
    }

    .card {
        padding: 32px;
    }

    .tab-bar {
        top: 16px;
        flex-wrap: wrap;
        max-width: calc(100% - 32px);
    }

    .tab-item {
        padding: 8px 16px;
        font-size: 0.85rem;
    }
}