:root {
    --primary-color: #007bff;
    --primary-hover: #0056b3;
    --secondary-color: #6c757d;
    --background-color: #f5f7fa;
    --card-bg: #ffffff;
    --text-main: #333;
    --text-secondary: #666;
    --border-color: #ddd;
    --success-color: #28a745;
    --warning-color: #ffc107;
    --error-color: #dc3545;
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    --radius-md: 4px;
    --radius-lg: 8px;
}

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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: var(--background-color);
    color: var(--text-main);
    line-height: 1.6;
    display: flex;
    justify-content: center;
    min-height: 100vh;
    padding: 2rem 1rem;
}

.container {
    width: 100%;
    max-width: 800px;
}

header {
    text-align: center;
    margin-bottom: 3rem;
    animation: fadeInDown 0.6s ease-out;
}

header h1 {
    font-size: 2.25rem;
    font-weight: 700;
    color: #007bff;
    margin-bottom: 0.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
}

.description {
    color: var(--text-secondary);
    font-size: 1rem;
    max-width: 600px;
    margin: 0 auto;
}

.card {
    background: var(--card-bg);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    padding: 2rem;
    margin-bottom: 2rem;
    border: 1px solid var(--border-color);
    transition: transform 0.2s, box-shadow 0.2s;
}

.search-card:hover {
    box-shadow: var(--shadow-lg);
}

.form-group {
    margin-bottom: 1.5rem;
}

label {
    display: block;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
}

.input-wrapper,
.select-wrapper {
    position: relative;
}

.input-icon {
    position: absolute;
    left: 1rem;
    top: 50%;
    transform: translateY(-50%);
    color: var(--secondary-color);
    pointer-events: none;
}

input[type="text"],
select {
    width: 100%;
    padding: 0.75rem 1rem 0.75rem 2.75rem;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    font-family: inherit;
    font-size: 1rem;
    color: var(--text-main);
    transition: border-color 0.2s, box-shadow 0.2s;
    background-color: #fff;
    appearance: none;
}

input[type="text"]:focus,
select:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.1);
}

/* Radio buttons styles */
.radio-group {
    display: flex;
    gap: 1.5rem;
    margin-top: 0.5rem;
}

.radio-label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    cursor: pointer;
    font-weight: normal;
    color: var(--text-main);
}

input[type="radio"] {
    accent-color: var(--primary-color);
    width: 1.25em;
    height: 1.25em;
    cursor: pointer;
}

.help-text {
    font-size: 0.8rem;
    color: var(--text-secondary);
    margin-top: 0.25rem;
    margin-left: 0.25rem;
}

.select-arrow {
    position: absolute;
    right: 1rem;
    top: 50%;
    transform: translateY(-50%);
    color: var(--secondary-color);
    pointer-events: none;
    font-size: 0.8rem;
}

.btn-primary {
    width: 100%;
    padding: 0.875rem;
    background-color: var(--primary-color);
    color: white;
    border: none;
    border-radius: var(--radius-md);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: background-color 0.2s, transform 0.1s;
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 0.5rem;
}

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

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

/* Result Area */
.hidden {
    display: none !important;
}

.result-card h3 {
    font-size: 1.25rem;
    margin-bottom: 1.5rem;
    padding-bottom: 0.75rem;
    border-bottom: 1px solid var(--border-color);
    color: var(--text-main);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.record-container {
    font-family: 'Consolas', 'Monaco', monospace;
    font-size: 0.95rem;
}

.code-block-wrapper {
    background: #1e293b;
    border-radius: var(--radius-md);
    padding: 1rem;
    position: relative;
    margin-bottom: 0.5rem;
}

#recordOutput,
#privateKeyOutput,
#publicKeyOutput {
    color: #e2e8f0;
    font-family: 'Consolas', 'Monaco', monospace;
    font-size: 0.9rem;
    word-break: break-all;
    white-space: pre-wrap;
    display: block;
    padding-right: 30px;
}

.copy-btn {
    position: absolute;
    top: 0.5rem;
    right: 0.5rem;
    background: rgba(255, 255, 255, 0.1);
    border: none;
    color: #fff;
    width: 30px;
    height: 30px;
    border-radius: 4px;
    cursor: pointer;
    transition: background 0.2s;
}

.copy-btn:hover {
    background: rgba(255, 255, 255, 0.2);
}

.copy-success {
    color: var(--success-color);
    font-size: 0.875rem;
    margin-top: 0.5rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    animation: fadeIn 0.3s;
}

/* Info Card */
.info-card {
    background: #f8fafc;
}

.info-content {
    display: grid;
    gap: 1.25rem;
}

.info-item {
    display: grid;
    grid-template-columns: 80px 1fr;
    gap: 1rem;
    align-items: start;
}

.info-tag {
    font-family: 'Consolas', 'Monaco', monospace;
    font-weight: 600;
    color: var(--primary-color);
    font-size: 1rem;
    background: white;
    padding: 0.5rem;
    border-radius: var(--radius-md);
    text-align: center;
    border: 1px solid var(--border-color);
}

.info-desc {
    font-size: 0.9rem;
    color: var(--text-main);
    line-height: 1.6;
}

/* Animations */
@keyframes fadeIn {
    from {
        opacity: 0;
    }

    to {
        opacity: 1;
    }
}

@keyframes fadeInDown {
    from {
        opacity: 0;
        transform: translateY(-20px);
    }

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

footer {
    text-align: center;
    color: var(--secondary-color);
    font-size: 0.875rem;
    margin-top: 3rem;
}

/* Responsive */
@media (max-width: 768px) {
    body {
        padding: 1rem 0.5rem;
    }

    header h1 {
        font-size: 1.5rem;
    }

    .card {
        padding: 1.25rem;
    }

    .info-item {
        grid-template-columns: 1fr;
        gap: 0.5rem;
    }

    .info-tag {
        width: fit-content;
    }
}
/* Alert Styles */
.alert {
    padding: 1rem;
    border-radius: var(--radius-md);
    margin-bottom: 2rem;
    font-weight: 500;
    animation: fadeIn 0.3s;
}

.alert-error {
    background-color: #fde8e8;
    color: #9b1c1c;
    border: 1px solid #f8b4b4;
}

.alert-success {
    background-color: #def7ec;
    color: #03543f;
    border: 1px solid #84e1bc;
}