/* Terre Rinforzate Styles */
.terre-rinforzate-container {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: #ffffff;
    min-height: 100vh;
    padding: 20px;
}

#loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: white;
    display: grid;
    z-index: 9999;
}

.loading-spinner {
    align-self: center;
    justify-self: center;
}

/* Buttons Container */
.buttons-container {
    display: flex !important;
    gap: 8px;
    margin-bottom: 20px;
    justify-content: center;
    flex-wrap: nowrap !important;
    align-items: center;
    width: 100%;
    overflow-x: auto;
}

.buttons-container form {
    display: flex !important;
    gap: 8px;
    flex-wrap: nowrap !important;
    align-items: center;
}

.btn-io {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 8px 12px;
    background: linear-gradient(135deg, #4a90e2, #357abd);
    color: white;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    min-width: 75px;
    max-width: 85px;
    text-decoration: none;
    font-size: 11px;
    flex-shrink: 0;
    white-space: nowrap;
}

.btn-io:hover {
    background: linear-gradient(135deg, #357abd, #2868a3);
}

.btn-io i {
    font-size: 18px;
    margin-bottom: 4px;
}

.btn-io.btn-small {
    padding: 8px 12px;
    font-size: 10px;
    min-width: auto;
    margin: 10px 0;
}

.btn-io.btn-small i {
    font-size: 14px;
}

/* Special styling for calculate resistance button */
#btn-calcola-resprog {
    grid-column: 1 / -1;
    margin: 15px 0;
    max-width: none;
    min-width: auto;
    padding: 12px 20px;
    font-size: 12px;
}

/* Special styling for the final resistance calculation row */
.resistenza-progetto-row {
    grid-column: 1 / -1;
    display: grid;
    grid-template-columns: 2fr auto 1fr auto;
    gap: 10px;
    align-items: center;
    margin-top: 15px;
    padding-top: 15px;
    border-top: 1px solid #e0e0e0;
}

/* Main Grid Layout */
.main-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 20px;
    max-width: 1200px;
    margin: 0 auto;
}

/* Card Styles */
.card {
    background: white;
    border-radius: 12px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
    overflow: hidden;
    transition: all 0.3s ease;
}

.card:hover {
    box-shadow: 0 8px 15px rgba(0,0,0,0.15);
}

.card-header {
    background: linear-gradient(135deg, #4a90e2, #357abd);
    color: white;
    padding: 15px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: pointer;
}

.card-header.no-collapse {
    cursor: default;
}

.card-header-title h3 {
    margin: 0;
    font-size: 16px;
    font-weight: 600;
}

.card-sub-heading {
    font-size: 11px;
    opacity: 0.9;
    font-style: italic;
    display: block;
    margin-top: 2px;
}

.card-header-icon i {
    font-size: 18px;
    transition: transform 0.3s ease;
}

.card-header.collapsed .card-header-icon i {
    transform: rotate(180deg);
}

.card-body {
    padding: 20px;
    display: grid;
    grid-template-columns: 2fr auto 1fr auto;
    gap: 10px;
    align-items: center;
}

.card-body.collapsed {
    display: none;
}

/* Schema Images */
.schema-geometria, .schema-sovraccarico {
    grid-column: 1 / -1;
    text-align: center;
    margin-bottom: 15px;
}

.schema-geometria img, .schema-sovraccarico img {
    max-width: 100%;
    max-height: 300px;
    object-fit: contain;
}

/* Form Elements */
label {
    font-size: 14px;
    color: #333;
    font-weight: 500;
}

.symbol {
    font-weight: bold;
    color: #4a90e2;
    text-align: center;
    font-size: 14px;
}

.input-value {
    padding: 8px 10px;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 14px;
    text-align: center;
    transition: border-color 0.3s ease;
}

.input-value:focus {
    outline: none;
    border-color: #4a90e2;
    box-shadow: 0 0 5px rgba(74, 144, 226, 0.3);
}

.input-value:readonly {
    background-color: #f8f9fa;
    color: #666;
}

.unit {
    font-size: 12px;
    color: #666;
    font-weight: 500;
    text-align: center;
}

.select-input {
    grid-column: 1 / -1;
    padding: 8px 10px;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 14px;
    margin-bottom: 10px;
}

/* Section Headings */
h4 {
    grid-column: 1 / -1;
    margin: 15px 0 10px 0;
    color: #4a90e2;
    font-size: 14px;
    font-weight: 600;
    border-bottom: 2px solid #4a90e2;
    padding-bottom: 5px;
}

/* Rinforzi Specific Styles */
.rinforzi-buttons {
    grid-column: 1 / -1;
    display: flex;
    gap: 10px;
    margin-bottom: 15px;
}

.btn-rinforzo {
    flex: 1;
    padding: 10px;
    background: #f8f9fa;
    border: 2px solid #ddd;
    border-radius: 6px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    font-size: 12px;
}

.btn-rinforzo.active {
    background: #4a90e2;
    color: white;
    border-color: #4a90e2;
}

.btn-rinforzo:hover {
    border-color: #4a90e2;
}

.rinforzi-section {
    grid-column: 1 / -1;
    display: grid;
    grid-template-columns: 2fr auto 1fr auto;
    gap: 10px;
    align-items: center;
}

.modalita-calcolo {
    grid-column: 1 / -1;
    display: flex;
    gap: 10px;
    margin-top: 20px;
}

.btn-modalita {
    flex: 1;
    padding: 10px;
    background: #f8f9fa;
    border: 2px solid #ddd;
    border-radius: 6px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    font-size: 12px;
}

.btn-modalita.active {
    background: #28a745;
    color: white;
    border-color: #28a745;
}

.btn-modalita:hover {
    border-color: #28a745;
}

/* Results Table */
.table-risultati {
    grid-column: 1 / -1;
    width: 100%;
    border-collapse: collapse;
    margin-top: 15px;
    font-size: 12px;
}

.table-risultati th {
    background: #4a90e2;
    color: white;
    padding: 8px;
    text-align: center;
    font-weight: 600;
}

.table-risultati td {
    padding: 6px 8px;
    text-align: center;
    border-bottom: 1px solid #ddd;
}

.table-risultati tbody tr:nth-child(even) {
    background: #f8f9fa;
}

.risultati-note {
    grid-column: 1 / -1;
    text-align: center;
    margin: 15px 0;
    color: #666;
    font-size: 12px;
}

/* Card Specific Colors */
.card-geometria .card-header {
    background: linear-gradient(135deg, #28a745, #1e7e34);
}

.card-sovraccarico .card-header {
    background: linear-gradient(135deg, #ffc107, #e0a800);
}

.card-geotecnica .card-header {
    background: linear-gradient(135deg, #17a2b8, #138496);
}

.card-azioni .card-header {
    background: linear-gradient(135deg, #fd7e14, #e8590c);
}

.card-coefficienti .card-header {
    background: linear-gradient(135deg, #6f42c1, #5a32a3);
}

.card-resistenza .card-header {
    background: linear-gradient(135deg, #e83e8c, #d91a72);
}

.card-sisma .card-header {
    background: linear-gradient(135deg, #dc3545, #bd2130);
}

.card-rinforzi .card-header {
    background: linear-gradient(135deg, #20c997, #17a085);
}

.card-risultati {
    grid-column: 1 / -1; /* Span full width across all columns */
}

.card-risultati .card-header {
    background: linear-gradient(135deg, #343a40, #1d2124);
}

.card-risultati .card-body {
    display: block; /* Override grid layout for results */
    padding: 25px;
}

.card-risultati .risultati-section {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
    margin-bottom: 25px;
}

.card-risultati .risultati-group {
    display: grid;
    grid-template-columns: 2fr 60px 120px 60px;
    gap: 8px;
    align-items: center;
    margin-bottom: 8px;
}

.card-risultati .input-value {
    text-align: center;
    min-width: 100px;
}

.card-risultati .symbol {
    text-align: center;
    font-weight: bold;
    color: #4a90e2;
}

.card-risultati .unit {
    text-align: left;
    font-size: 12px;
    color: #666;
}

.card-risultati h4 {
    color: #4a90e2;
    font-size: 16px;
    font-weight: 600;
    border-bottom: 2px solid #4a90e2;
    padding-bottom: 8px;
    margin-bottom: 15px;
    margin-top: 0;
}

/* Alert Messages */
.alert {
    padding: 12px 20px;
    border-radius: 6px;
    margin: 20px auto;
    max-width: 600px;
    font-weight: 500;
}

.btn-alert-message {
    margin: 10px 0 !important;
    max-width: none !important;
    font-size: 12px !important;
    padding: 8px 12px !important;
}

.alert-success {
    background-color: #d4edda;
    border: 1px solid #c3e6cb;
    color: #155724;
}

.alert-danger {
    background-color: #f8d7da;
    border: 1px solid #f5c6cb;
    color: #721c24;
}

/* Responsive Design */
@media (max-width: 768px) {
    .main-grid {
        gap: 15px;
    }

    .buttons-container {
        gap: 8px;
        flex-wrap: wrap;
        justify-content: center;
    }

    .btn-io {
        min-width: 70px;
        max-width: 100px;
        padding: 8px 12px;
        font-size: 11px;
    }

    .card-body {
        grid-template-columns: 1fr;
        gap: 8px;
    }

    .rinforzi-section {
        grid-template-columns: 1fr;
    }

    .symbol, .unit {
        display: none;
    }

    .rinforzi-buttons {
        flex-direction: column;
    }

    .modalita-calcolo {
        flex-direction: column;
    }
}

@media (max-width: 480px) {
    .terre-rinforzate-container {
        padding: 10px;
    }

    .table-risultati {
        font-size: 10px;
    }

    .table-risultati th,
    .table-risultati td {
        padding: 4px;
    }
}