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

:root {
    --primary-color: #f7931a;
    --secondary-color: #1a1a1a;
    --background-color: #f5f5f5;
    --card-background: #ffffff;
    --text-color: #333333;
    --border-color: #e0e0e0;
    --success-color: #28a745;
    --error-color: #dc3545;
    --warning-color: #ffc107;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background-color: var(--background-color);
    color: var(--text-color);
    line-height: 1.6;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
}

header {
    text-align: center;
    margin-bottom: 40px;
    padding: 30px 0;
    background: linear-gradient(135deg, var(--primary-color), #ff6b35);
    color: white;
    border-radius: 10px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

header h1 {
    font-size: 2.5em;
    margin-bottom: 10px;
}

.subtitle {
    font-size: 1.2em;
    opacity: 0.9;
}

main {
    margin-bottom: 40px;
}

section {
    margin-bottom: 40px;
}

section h2 {
    font-size: 1.8em;
    margin-bottom: 20px;
    color: var(--secondary-color);
    border-bottom: 3px solid var(--primary-color);
    padding-bottom: 10px;
}

.grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
    margin-bottom: 30px;
}

.card {
    background: var(--card-background);
    border-radius: 10px;
    padding: 25px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    transition: transform 0.2s, box-shadow 0.2s;
}

.card:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.15);
}

.card h3 {
    font-size: 1.1em;
    margin-bottom: 15px;
    color: var(--secondary-color);
    font-weight: 600;
}

.value {
    font-size: 2em;
    font-weight: bold;
    color: var(--primary-color);
    word-break: break-all;
}

.tabs {
    display: flex;
    gap: 10px;
    margin-bottom: 20px;
    border-bottom: 2px solid var(--border-color);
}

.tab-button {
    padding: 10px 20px;
    background: none;
    border: none;
    cursor: pointer;
    font-size: 1em;
    color: var(--text-color);
    border-bottom: 3px solid transparent;
    transition: all 0.3s;
}

.tab-button:hover {
    color: var(--primary-color);
}

.tab-button.active {
    color: var(--primary-color);
    border-bottom-color: var(--primary-color);
    font-weight: 600;
}

.tab-content {
    display: none;
}

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

label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    color: var(--secondary-color);
}

input[type="text"],
input[type="file"],
textarea {
    width: 100%;
    padding: 12px;
    border: 2px solid var(--border-color);
    border-radius: 5px;
    font-size: 1em;
    margin-bottom: 15px;
    transition: border-color 0.3s;
}

input[type="text"]:focus,
textarea:focus {
    outline: none;
    border-color: var(--primary-color);
}

textarea {
    resize: vertical;
    min-height: 100px;
    font-family: monospace;
}

button {
    background-color: var(--primary-color);
    color: white;
    border: none;
    padding: 12px 24px;
    border-radius: 5px;
    font-size: 1em;
    cursor: pointer;
    transition: background-color 0.3s;
    font-weight: 600;
}

button:hover {
    background-color: #e8840a;
}

button:disabled {
    background-color: #ccc;
    cursor: not-allowed;
}

.hash-buttons {
    display: flex;
    gap: 10px;
    margin-top: 10px;
}

.hash-buttons button {
    flex: 1;
}

.spinner {
    margin-left: 10px;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

.hash-section {
    margin-top: 20px;
    padding-top: 20px;
    border-top: 2px solid var(--border-color);
}

.file-info {
    margin: 15px 0;
    padding: 10px;
    background-color: var(--background-color);
    border-radius: 5px;
    font-size: 0.9em;
}

.result {
    margin-top: 20px;
    padding: 15px;
    border-radius: 5px;
    display: none;
}

.result.success {
    background-color: #d4edda;
    color: #155724;
    border: 1px solid #c3e6cb;
    display: block;
}

.result.error {
    background-color: #f8d7da;
    color: #721c24;
    border: 1px solid #f5c6cb;
    display: block;
}

.result.info {
    background-color: #d1ecf1;
    color: #0c5460;
    border: 1px solid #bee5eb;
    display: block;
}

footer {
    text-align: center;
    padding: 20px;
    background-color: var(--card-background);
    border-radius: 10px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    color: #666;
}

.loading {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    border-top-color: white;
    animation: spin 1s ease-in-out infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

@media (max-width: 768px) {
    .grid {
        grid-template-columns: 1fr;
    }

    header h1 {
        font-size: 2em;
    }

    .container {
        padding: 10px;
    }
}