:root {
    --bg-color: #0f172a;
    --card-bg: #1e293b;
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --accent-color: #3b82f6;
    --accent-hover: #2563eb;
    --border-color: #334155;
    --success-color: #10b981;
    --error-color: #ef4444;
}

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

body {
    font-family: 'Outfit', sans-serif;
    background-color: var(--bg-color);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    justify-content: center;
    padding: 2rem;
}

.container {
    width: 100%;
    max-width: 1200px;
}

header {
    text-align: center;
    margin-bottom: 3rem;
}

h1 {
    font-size: 3rem;
    font-weight: 600;
    background: linear-gradient(to right, #60a5fa, #a78bfa);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: 0.5rem;
}

.subtitle {
    color: var(--text-secondary);
    font-size: 1.2rem;
}

.editor-container {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2rem;
}

@media (min-width: 768px) {
    .editor-container {
        grid-template-columns: 1fr auto 1fr;
        align-items: start;
    }
}

.input-section, .output-section {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    height: 70vh;
}

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

textarea {
    flex-grow: 1;
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 1.5rem;
    color: var(--text-primary);
    font-family: inherit;
    font-size: 1rem;
    resize: none;
    transition: border-color 0.3s ease, box-shadow 0.3s ease;
    outline: none;
}

textarea:focus {
    border-color: var(--accent-color);
    box-shadow: 0 0 0 2px rgba(59, 130, 246, 0.2);
}

.controls {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    padding: 0 1rem;
}

.primary-btn {
    background-color: var(--accent-color);
    color: white;
    border: none;
    padding: 1rem 2rem;
    border-radius: 50px;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
}

.primary-btn:hover {
    background-color: var(--accent-hover);
    transform: translateY(-2px);
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
}

.primary-btn:disabled {
    opacity: 0.7;
    cursor: not-allowed;
    transform: none;
}

.loader {
    display: none;
    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;
}

.primary-btn.loading .loader {
    display: block;
}

.primary-btn.loading .btn-text {
    display: none;
}

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

.status-message {
    font-size: 0.9rem;
    min-height: 1.5rem;
    text-align: center;
}

.status-message.error {
    color: var(--error-color);
}

.status-message.success {
    color: var(--success-color);
}

/* File input and select styling */
input[type="file"],
select {
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 0.75rem 1rem;
    color: var(--text-primary);
    font-family: inherit;
    font-size: 0.95rem;
    transition: border-color 0.3s ease, box-shadow 0.3s ease;
    outline: none;
    width: 100%;
}

input[type="file"]:focus,
select:focus {
    border-color: var(--accent-color);
    box-shadow: 0 0 0 2px rgba(59, 130, 246, 0.2);
}

input[type="file"] {
    cursor: pointer;
}

input[type="file"]::-webkit-file-upload-button {
    background-color: var(--accent-color);
    color: white;
    border: none;
    padding: 0.5rem 1rem;
    border-radius: 6px;
    margin-right: 1rem;
    cursor: pointer;
    font-family: inherit;
    font-size: 0.9rem;
    transition: background-color 0.3s ease;
}

input[type="file"]::-webkit-file-upload-button:hover {
    background-color: var(--accent-hover);
}

select {
    cursor: pointer;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%2394a3b8' d='M6 9L1 4h10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 1rem center;
    padding-right: 2.5rem;
}

/* File uploads section */
.file-uploads-section {
    margin-top: 3rem;
    padding-top: 2rem;
    border-top: 1px solid var(--border-color);
}

.file-uploads-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1.5rem;
}

@media (min-width: 768px) {
    .file-uploads-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1024px) {
    .file-uploads-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

.file-upload-item {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.file-upload-item label {
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    font-size: 0.9rem;
}

.file-upload-item select {
    margin-bottom: 0.5rem;
}

/* Prompt display section */
.prompt-display-section {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    margin-top: 2rem;
    padding-top: 2rem;
    border-top: 1px solid var(--border-color);
}

.prompt-display-section label {
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    font-size: 0.9rem;
}

#fullPromptDisplay {
    min-height: 400px;
    max-height: 600px;
    background-color: #1a2332;
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 1.5rem;
    color: var(--text-primary);
    font-family: 'Courier New', monospace;
    font-size: 0.85rem;
    resize: vertical;
    line-height: 1.5;
    overflow-y: auto;
}

#fullPromptDisplay:focus {
    border-color: var(--accent-color);
    box-shadow: 0 0 0 2px rgba(59, 130, 246, 0.2);
}

/* Responsive adjustments for new input sections */
@media (max-width: 767px) {
    .input-section {
        height: auto;
        min-height: auto;
    }
    
    .input-section textarea {
        min-height: 200px;
    }
}