:root {
    --primary-color: #6366f1;
    --primary-hover: #4f46e5;
    --bg-gradient-start: #0f172a;
    --bg-gradient-end: #1e293b;
    --card-bg: rgba(30, 41, 59, 0.7);
    --text-color: #f8fafc;
    --text-muted: #94a3b8;
    --border-color: rgba(148, 163, 184, 0.1);
}

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

body {
    font-family: 'Outfit', sans-serif;
    background: linear-gradient(135deg, var(--bg-gradient-start), var(--bg-gradient-end));
    color: var(--text-color);
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 20px;
}

.container {
    width: 100%;
    max-width: 600px;
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

header {
    text-align: center;
}

header h1 {
    font-weight: 600;
    font-size: 2.5rem;
    margin-bottom: 0.5rem;
    background: linear-gradient(to right, #818cf8, #c084fc);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

header p {
    color: var(--text-muted);
}

.card {
    background: var(--card-bg);
    backdrop-filter: blur(12px);
    border: 1px solid var(--border-color);
    border-radius: 24px;
    padding: 2rem;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.input-group {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.input-group label {
    font-size: 0.9rem;
    font-weight: 600;
    letter-spacing: 0.05em;
    color: var(--text-muted);
    text-transform: uppercase;
}

.input-wrapper {
    display: flex;
    gap: 1rem;
}

input {
    flex: 1;
    background: rgba(15, 23, 42, 0.6);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 1rem;
    font-family: inherit;
    font-size: 1.1rem;
    color: white;
    transition: all 0.3s ease;
}

input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 2px rgba(99, 102, 241, 0.2);
}

button {
    background: var(--primary-color);
    color: white;
    border: none;
    padding: 1rem 2rem;
    border-radius: 12px;
    font-family: inherit;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    font-size: 1rem;
}

button:hover {
    background: var(--primary-hover);
    transform: translateY(-2px);
    box-shadow: 0 10px 15px -3px rgba(99, 102, 241, 0.3);
}

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

button:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none;
}

button.secondary {
    background: transparent;
    border: 1px solid var(--border-color);
    width: 100%;
}

button.secondary:hover:not(:disabled) {
    background: rgba(255, 255, 255, 0.05);
    border-color: var(--text-muted);
    transform: translateY(-2px);
    box-shadow: none;
}

.preview-container {
    background: rgba(0, 0, 0, 0.2);
    border-radius: 16px;
    padding: 1rem;
    min-height: 300px;
    display: flex;
    justify-content: center;
    align-items: center;
    overflow: hidden;
    position: relative;
}

#svgContainer {
    width: 100%;
    display: flex;
    justify-content: center;
}

#svgContainer svg {
    max-width: 100%;
    height: auto;
    border-radius: 8px;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
}

.placeholder {
    color: var(--text-muted);
    font-style: italic;
}

/* Animations */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

.card {
    animation: fadeIn 0.6s ease-out;
}