:root {
    --bg-color: #0F1215;
    --card-bg: #1A1D21;
    --card-bg-glass: rgba(26, 29, 33, 0.85);
    --primary-color: #636E72;
    --secondary-color: #B2BEC3;
    --accent-color: #00B894;
    --border-color: #2D3436;
    --text-color: #FFFFFF;
    --text-muted: #B2BEC3;
    --radius: 12px;
    --transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
    font-family: 'Inter', system-ui, -apple-system, sans-serif;
    background-color: var(--bg-color);
    background-image: radial-gradient(circle at 50% 0%, #1a1d21 0%, #0f1215 100%);
    color: var(--text-color);
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    justify-content: center;
    padding: 4rem 1rem;
}

.container {
    width: 100%;
    max-width: 860px;
    display: flex;
    flex-direction: column;
    gap: 2.5rem;
}

/* Header */
header {
    text-align: center;
    animation: fadeInDown 0.6s ease-out;
}

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

.logo-container {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    margin-bottom: 0.75rem;
}

.logo-icon {
    color: var(--accent-color);
    width: 40px;
    height: 40px;
    filter: drop-shadow(0 0 10px rgba(0, 184, 148, 0.3));
}

h1 {
    font-size: 2.5rem;
    font-weight: 800;
    letter-spacing: -0.04em;
    background: linear-gradient(135deg, #fff 0%, #b2bec3 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.subtitle {
    color: var(--text-muted);
    font-size: 1.1rem;
    font-weight: 400;
}

/* Cards */
.generator-wrapper {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.card {
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.4);
    transition: var(--transition);
}

.glass {
    background-color: var(--card-bg-glass);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
}

.card-header {
    padding: 1.5rem 2rem;
    border-bottom: 1px solid var(--border-color);
}

.card-header h2 {
    font-size: 1.15rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    color: var(--secondary-color);
}

.card-header h2 i {
    width: 20px;
    height: 20px;
    color: var(--accent-color);
}

.card-body {
    padding: 2rem;
}

/* Forms */
.form-group {
    margin-bottom: 1.5rem;
    display: flex;
    flex-direction: column;
    gap: 0.6rem;
}

label {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

label i {
    width: 14px;
    height: 14px;
}

textarea, select, input {
    background-color: rgba(0, 0, 0, 0.2);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-color);
    padding: 0.85rem 1rem;
    font-family: inherit;
    font-size: 1rem;
    width: 100%;
    transition: var(--transition);
}

textarea {
    min-height: 180px;
    resize: vertical;
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.95rem;
}

textarea:focus, select:focus, input:focus {
    outline: none;
    border-color: var(--accent-color);
    background-color: rgba(0, 0, 0, 0.3);
    box-shadow: 0 0 0 4px rgba(0, 184, 148, 0.1);
}

.settings-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    padding: 0.85rem 1.75rem;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    border: none;
    font-family: inherit;
}

.btn-primary {
    background: linear-gradient(135deg, #00b894 0%, #00a884 100%);
    color: #FFFFFF;
    width: 100%;
    box-shadow: 0 4px 15px rgba(0, 184, 148, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 184, 148, 0.4);
}

.btn-primary:active {
    transform: translateY(0);
}

.btn-secondary {
    background-color: var(--primary-color);
    color: #FFFFFF;
}

.btn-accent {
    background-color: var(--accent-color);
    color: #FFFFFF;
}

.btn-sm {
    padding: 0.5rem 1.25rem;
    font-size: 0.85rem;
}

.btn:hover {
    filter: brightness(1.1);
}

/* Results Section */
.flex-between {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.header-actions {
    display: flex;
    gap: 0.75rem;
}

.code-wrapper {
    background-color: #080a0c;
    border-radius: 8px;
    padding: 1.25rem;
    max-height: 400px;
    overflow-y: auto;
    border: 1px solid var(--border-color);
}

pre {
    font-family: 'JetBrains Mono', 'Fira Code', monospace;
    font-size: 0.85rem;
    white-space: pre-wrap;
    word-break: break-all;
    color: #A29BFE; /* Light purple for XML code feel */
}

/* Footer */
footer {
    text-align: center;
    color: var(--text-muted);
    font-size: 0.85rem;
    margin-top: 1rem;
    padding-bottom: 2rem;
}

/* Toast */
.toast {
    position: fixed;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
    background-color: #1e293b;
    border: 1px solid var(--accent-color);
    color: white;
    padding: 1rem 2rem;
    border-radius: 50px;
    box-shadow: 0 10px 25px rgba(0,0,0,0.5);
    z-index: 1000;
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.toast.hidden {
    opacity: 0;
    transform: translate(-50%, 20px);
    pointer-events: none;
}

.hidden {
    display: none;
}

/* Responsive */
@media (max-width: 640px) {
    body {
        padding: 2rem 1rem;
    }
    
    .settings-row {
        grid-template-columns: 1fr;
    }
    
    h1 {
        font-size: 2rem;
    }

    .card-header {
        padding: 1.25rem 1.5rem;
    }

    .card-body {
        padding: 1.5rem;
    }
    
    .flex-between {
        flex-direction: column;
        align-items: flex-start;
        gap: 1rem;
    }
    
    .header-actions {
        width: 100%;
    }
    
    .header-actions .btn {
        flex: 1;
    }
}