/* FloMOD Sizing Tool - Dark Theme CSS */

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background-color: #3a4a5c;
    color: #ffffff;
    line-height: 1.6;
}

.container {
    max-width: 1600px;
    margin: 0 auto;
    padding: 20px;
}

/* Header */
header {
    text-align: center;
    margin-bottom: 30px;
}

.title {
    font-size: 2.5rem;
    font-weight: bold;
    color: #20c997;
    margin-bottom: 10px;
}

.subtitle {
    font-size: 1.2rem;
    color: #bbbbbb;
}

/* Sections */
.section {
    margin-bottom: 30px;
}

.section-header {
    font-size: 1.2rem;
    font-weight: bold;
    color: #20c997;
    background-color: #4a5a6c;
    padding: 12px 16px;
    border-radius: 4px;
    margin-bottom: 20px;
}

/* Form Grid */
.form-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
    margin-bottom: 20px;
}

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

.input-group label {
    font-weight: 500;
    margin-bottom: 8px;
    color: #ffffff;
    font-size: 1rem;
}

.var-label {
    color: #20c997;
    font-weight: bold;
    font-size: 1rem;
}

.input-group input {
    padding: 8px 12px;
    background-color: #4a5a6c;
    border: 1px solid #5a6a7c;
    border-radius: 4px;
    color: #ffffff;
    font-size: 1rem;
    max-width: 200px;
}

.input-group input:focus {
    outline: none;
    border: 2px solid #20c997;
}

/* Calculate Button */
.calculate-section {
    display: flex;
    justify-content: center;
    margin: 30px 0;
}

.calculate-btn {
    background-color: #20c997;
    color: #ffffff;
    border: 1px solid #1abc9c;
    padding: 12px 32px;
    border-radius: 4px;
    font-weight: bold;
    font-size: 1.2rem;
    cursor: pointer;
    transition: background-color 0.2s ease;
}

.calculate-btn:hover {
    background-color: #17a2b8;
}

.calculate-btn:active {
    background-color: #1abc9c;
}

/* Modules Section */
.modules-section {
    margin-top: 40px;
}

.modules-container {
    display: flex;
    gap: 48px;
    overflow-x: auto;
    padding: 20px 0;
    min-height: 450px;
}

.module-block {
    min-width: 350px;
    background-color: #3a4a5c;
    border: 1px solid #5a6a7c;
    border-radius: 8px;
    padding: 0;
    flex-shrink: 0;
}

.module-header {
    font-size: 1.2rem;
    font-weight: bold;
    color: #20c997;
    background-color: #4a5a6c;
    padding: 12px 16px;
    border-radius: 8px 8px 0 0;
    margin-bottom: 0;
}

.module-params {
    padding: 16px;
}

.param-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 8px 0;
    border-bottom: 1px solid #4a5a6c;
    min-height: 40px;
}

.param-row:last-child {
    border-bottom: none;
}

.param-label {
    flex: 1;
    font-size: 1rem;
    color: #ffffff;
    padding-right: 10px;
}

.param-value {
    font-weight: bold;
    color: #20c997;
    min-width: 80px;
    text-align: right;
    font-family: monospace;
}

.param-row.calculated .param-value {
    color: #17a2b8;
}

.param-row.calculated {
    background-color: rgba(32, 201, 151, 0.1);
    margin: 4px -8px;
    padding: 8px 8px;
    border-radius: 4px;
}

/* Editable rows in custom module */
.param-row.editable {
    display: flex;
    align-items: center;
    gap: 10px;
}

.param-row.editable label {
    flex: 1;
    font-size: 1rem;
    color: #ffffff;
}

.param-row.editable input {
    min-width: 110px;
    padding: 4px 8px;
    background-color: #ffffff;
    color: #000000;
    border: 1px solid #5a6a7c;
    border-radius: 4px;
    font-size: 0.9rem;
}

.param-row.editable input:focus {
    outline: none;
    border: 2px solid #20c997;
}

/* Subheadings */
.subheading {
    font-size: 1.1rem;
    font-weight: bold;
    color: #20c997;
    margin: 16px 0 8px 0;
    padding-top: 8px;
    border-top: 2px solid #4a5a6c;
}

/* Scrollbar Styling */
.modules-container::-webkit-scrollbar {
    height: 12px;
}

.modules-container::-webkit-scrollbar-track {
    background-color: #4a5a6c;
    border-radius: 6px;
}

.modules-container::-webkit-scrollbar-thumb {
    background-color: #20c997;
    border-radius: 6px;
}

.modules-container::-webkit-scrollbar-thumb:hover {
    background-color: #1ba085;
}

/* Responsive Design */
@media (max-width: 768px) {
    .container {
        padding: 15px;
    }
    
    .form-grid {
        grid-template-columns: 1fr;
    }
    
    .modules-container {
        gap: 20px;
    }
    
    .module-block {
        min-width: 280px;
    }
    
    .title {
        font-size: 2rem;
    }
    
    .subtitle {
        font-size: 1rem;
    }
}

@media (max-width: 480px) {
    .param-row {
        flex-direction: column;
        align-items: flex-start;
        gap: 5px;
    }
    
    .param-value {
        text-align: left;
    }
    
    .param-row.editable {
        flex-direction: column;
        align-items: stretch;
    }
    
    .param-row.editable input {
        width: 100%;
    }
}

/* Animation for calculated values */
.param-row.calculated .param-value {
    animation: highlight 0.3s ease-in-out;
}

@keyframes highlight {
    0% { background-color: rgba(32, 201, 151, 0.3); }
    100% { background-color: transparent; }
}

/* Loading state */
.calculating {
    background-color: #6c757d !important;
    cursor: not-allowed !important;
    opacity: 0.8;
}

.calculating:hover {
    background-color: #6c757d !important;
}

/* Enhanced animation for calculated values */
@keyframes highlight {
    0% { 
        background-color: rgba(32, 201, 151, 0.5);
        transform: scale(1.02);
    }
    100% { 
        background-color: transparent;
        transform: scale(1);
    }
}

/* Pulse animation for calculating state */
@keyframes pulse {
    0% { opacity: 1; }
    50% { opacity: 0.6; }
    100% { opacity: 1; }
}

.calculating {
    animation: pulse 1.5s infinite;
}