@import url('https://fonts.googleapis.com/css2?family=JetBrains+Mono:wght@400;600;700&family=Space+Mono:wght@400;700&family=DM+Sans:wght@400;500;700&display=swap');

:root {
    --bg-primary: #0a0e14;
    --bg-secondary: #151a21;
    --bg-tertiary: #1f2630;
    --accent-green: #4dffb8;
    --accent-cyan: #39bae6;
    --accent-purple: #a277ff;
    --text-primary: #e6edf3;
    --text-secondary: #8b949e;
    --text-muted: #6e7681;
    --border: #30363d;
    --error: #ff6b6b;
    --warning: #ffd93d;
    --success: #4dffb8;
}

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

body {
    font-family: 'DM Sans', sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    overflow-x: hidden;
}

/* Animated background */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: 
        radial-gradient(circle at 20% 50%, rgba(77, 255, 184, 0.05) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(162, 119, 255, 0.05) 0%, transparent 50%),
        radial-gradient(circle at 40% 20%, rgba(57, 186, 230, 0.03) 0%, transparent 50%);
    pointer-events: none;
    z-index: 0;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem;
    position: relative;
    z-index: 1;
}

header {
    text-align: center;
    margin-bottom: 3rem;
    padding: 2rem 0;
    border-bottom: 1px solid var(--border);
    position: relative;
}

h1 {
    font-family: 'Space Mono', monospace;
    font-size: 3rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--accent-green), var(--accent-cyan));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 0.5rem;
    letter-spacing: -0.02em;
    animation: slideDown 0.6s ease-out;
}

.subtitle {
    color: var(--text-secondary);
    font-size: 1.1rem;
    animation: slideDown 0.6s ease-out 0.1s both;
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.main-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
    margin-bottom: 3rem;
}

@media (max-width: 900px) {
    .main-content {
        grid-template-columns: 1fr;
    }
}

.card {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 2rem;
    transition: all 0.3s ease;
    animation: fadeIn 0.6s ease-out both;
}

.card:hover {
    border-color: var(--accent-cyan);
    box-shadow: 0 0 30px rgba(57, 186, 230, 0.1);
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.card:nth-child(1) { animation-delay: 0.2s; }
.card:nth-child(2) { animation-delay: 0.3s; }

.card h2 {
    font-family: 'Space Mono', monospace;
    font-size: 1.5rem;
    color: var(--accent-green);
    margin-bottom: 1.5rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.card h2::before {
    content: '▸';
    color: var(--accent-cyan);
    font-size: 1.2rem;
}

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

label {
    display: block;
    margin-bottom: 0.5rem;
    color: var(--text-secondary);
    font-size: 0.9rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

input[type="text"],
select,
textarea {
    width: 100%;
    padding: 0.875rem 1rem;
    background: var(--bg-tertiary);
    border: 1px solid var(--border);
    border-radius: 8px;
    color: var(--text-primary);
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.95rem;
    transition: all 0.2s ease;
}

input[type="text"]:focus,
select:focus,
textarea:focus {
    outline: none;
    border-color: var(--accent-cyan);
    box-shadow: 0 0 0 3px rgba(57, 186, 230, 0.1);
}

input[type="text"]::placeholder {
    color: var(--text-muted);
}

select {
    cursor: pointer;
    background-image: url("data:image/svg+xml,%3Csvg width='12' height='8' viewBox='0 0 12 8' fill='none' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M1 1.5L6 6.5L11 1.5' stroke='%234dffb8' stroke-width='2' stroke-linecap='round'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 1rem center;
    padding-right: 2.5rem;
    appearance: none;
}

textarea {
    resize: vertical;
    min-height: 60px;
    font-size: 0.85rem;
}

textarea[readonly] {
    background: var(--bg-primary);
    cursor: text;
}

.checkbox-group {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 1.5rem;
}

input[type="checkbox"] {
    width: 20px;
    height: 20px;
    cursor: pointer;
    accent-color: var(--accent-green);
}

.checkbox-group label {
    margin: 0;
    text-transform: none;
    letter-spacing: 0;
    cursor: pointer;
}

.button-group {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

button {
    padding: 0.875rem 2rem;
    background: linear-gradient(135deg, var(--accent-green), var(--accent-cyan));
    border: none;
    border-radius: 8px;
    color: var(--bg-primary);
    font-family: 'Space Mono', monospace;
    font-size: 0.95rem;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.3s ease;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    position: relative;
    overflow: hidden;
}

button::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
    transition: left 0.5s ease;
}

button:hover::before {
    left: 100%;
}

button:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 20px rgba(77, 255, 184, 0.3);
}

button:active {
    transform: translateY(0);
}

button.secondary {
    background: var(--bg-tertiary);
    color: var(--accent-cyan);
    border: 1px solid var(--border);
}

button.secondary:hover {
    background: var(--bg-primary);
    border-color: var(--accent-cyan);
    box-shadow: 0 5px 20px rgba(57, 186, 230, 0.2);
}

.output-section {
    margin-top: 2rem;
    padding-top: 2rem;
    border-top: 1px solid var(--border);
}

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

.output-label {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 0.5rem;
}

.copy-btn {
    padding: 0.4rem 0.875rem;
    font-size: 0.8rem;
    background: var(--bg-tertiary);
    color: var(--accent-green);
    border: 1px solid var(--border);
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.2s ease;
}

.copy-btn:hover {
    background: var(--accent-green);
    color: var(--bg-primary);
    border-color: var(--accent-green);
    transform: translateY(-1px);
    box-shadow: none;
}

.copy-btn.copied {
    background: var(--success);
    color: var(--bg-primary);
    border-color: var(--success);
}

.info-section {
    margin-top: 3rem;
    animation: fadeIn 0.6s ease-out 0.4s both;
}

.info-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 2rem;
    margin-bottom: 2rem;
}

.info-card h2 {
    font-family: 'Space Mono', monospace;
    font-size: 1.8rem;
    color: var(--accent-purple);
    margin-bottom: 1.5rem;
}

.info-card h3 {
    font-family: 'Space Mono', monospace;
    color: var(--accent-cyan);
    margin-top: 1.5rem;
    margin-bottom: 0.75rem;
    font-size: 1.2rem;
}

.info-card p {
    color: var(--text-secondary);
    margin-bottom: 1rem;
    line-height: 1.8;
}

.info-card ul, .info-card ol {
    margin-left: 1.5rem;
    margin-bottom: 1rem;
    color: var(--text-secondary);
}

.info-card li {
    margin-bottom: 0.5rem;
}

.info-card code {
    background: var(--bg-tertiary);
    padding: 0.2rem 0.5rem;
    border-radius: 4px;
    font-family: 'JetBrains Mono', monospace;
    color: var(--accent-green);
    font-size: 0.9rem;
}

.warning {
    background: rgba(255, 217, 61, 0.1);
    border-left: 4px solid var(--warning);
    padding: 1rem;
    border-radius: 8px;
    margin: 1rem 0;
}

.warning p {
    color: var(--text-primary);
    margin: 0;
}

.success {
    background: rgba(77, 255, 184, 0.1);
    border-left: 4px solid var(--success);
    padding: 1rem;
    border-radius: 8px;
    margin: 1rem 0;
}

.success p {
    color: var(--text-primary);
    margin: 0;
}

.faq-item {
    margin-bottom: 1.5rem;
    padding-bottom: 1.5rem;
    border-bottom: 1px solid var(--border);
}

.faq-item:last-child {
    border-bottom: none;
}

.faq-question {
    font-weight: 600;
    color: var(--accent-green);
    margin-bottom: 0.5rem;
    font-size: 1.05rem;
}

.faq-answer {
    color: var(--text-secondary);
    line-height: 1.8;
}

footer {
    text-align: center;
    padding: 2rem 0;
    margin-top: 4rem;
    border-top: 1px solid var(--border);
    color: var(--text-muted);
    font-size: 0.9rem;
}

.error-message {
    color: var(--error);
    font-size: 0.85rem;
    margin-top: 0.5rem;
    display: none;
}

.error-message.show {
    display: block;
}

.strength-meter {
    height: 6px;
    background: var(--bg-tertiary);
    border-radius: 3px;
    margin-top: 0.5rem;
    overflow: hidden;
}

.strength-bar {
    height: 100%;
    width: 0%;
    transition: all 0.3s ease;
    border-radius: 3px;
}

.strength-weak { background: var(--error); width: 33%; }
.strength-medium { background: var(--warning); width: 66%; }
.strength-strong { background: var(--success); width: 100%; }