:root {
    --primary-color: #201534;
    --secondary-color: #4a90e2;
    --text-color: #333;
    --light-bg: #f8f9fa;
    --button-gradient-left: #ff8f00;
    --button-gradient-right: #ee4848;
    --error-color: #dc3545;
    --success-color: #198754;
    --border-radius: 8px;
    --transition-speed: 0.3s;
    --box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

/* Global Styles */
body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    color: var(--text-color);
    background-color: var(--light-bg);
    line-height: 1.6;
}

/* Header Styles */
.app-header {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    box-shadow: var(--box-shadow);
}

.app-header h1 {
    font-weight: 600;
    font-size: 2rem;
}

/* Card Styles */
.card {
    border: none;
    border-radius: var(--border-radius);
    background: white;
    transition: transform var(--transition-speed);
}

.card:hover {
    transform: translateY(-2px);
}

.card-body {
    padding: 2rem;
}

/* Form Styles */
.form-label {
    font-weight: 500;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

.form-control, .form-select {
    border: 1.5px solid #e0e0e0;
    border-radius: var(--border-radius);
    padding: 0.75rem;
    transition: border-color var(--transition-speed);
}

.form-control:focus, .form-select:focus {
    border-color: var(--secondary-color);
    box-shadow: 0 0 0 0.2rem rgba(74, 144, 226, 0.25);
}

.form-control.is-invalid, .form-select.is-invalid {
    border-color: var(--error-color);
}

/* Button Styles */
.btn-generate {
    background: linear-gradient(135deg, var(--button-gradient-left), var(--button-gradient-right));
    color: white;
    padding: 0.75rem 2rem;
    border: none;
    border-radius: var(--border-radius);
    font-weight: 600;
    transition: transform var(--transition-speed), box-shadow var(--transition-speed);
}

.btn-generate:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(238, 72, 72, 0.3);
    color: white;
}

.btn-generate:active {
    transform: translateY(1px);
}

/* Loading Animation */
.loading-dots {
    display: inline-block;
    margin-left: 4px;
}

.loading-dots span {
    animation: blink 1.4s infinite;
    font-size: 1.2rem;
    margin-left: 2px;
}

.loading-dots span:nth-child(2) {
    animation-delay: 0.2s;
}

.loading-dots span:nth-child(3) {
    animation-delay: 0.4s;
}

@keyframes blink {
    0% { opacity: 0; }
    50% { opacity: 1; }
    100% { opacity: 0; }
}

/* Response Section Styles */
.content-display {
    font-size: 1.1rem;
    line-height: 1.8;
    color: var(--text-color);
}

.content-display p {
    margin-bottom: 1rem;
}

.content-display ul {
    padding-left: 1.5rem;
    margin-bottom: 1rem;
}

.content-display li {
    margin-bottom: 0.5rem;
}

/* Emoji Styles */
.content-display .emoji {
    font-size: 1.2em;
    margin: 0 0.2em;
    vertical-align: middle;
}

/* Responsive Adjustments */
@media (max-width: 768px) {
    .card-body {
        padding: 1.5rem;
    }

    .app-header h1 {
        font-size: 1.75rem;
    }

    .btn-generate {
        width: 100%;
        padding: 0.75rem 1rem;
    }
}

/* Utility Classes */
.shadow-sm {
    box-shadow: var(--box-shadow) !important;
}

.d-none {
    display: none !important;
}