/* Custom styles for Reservoir Calibration Calculator */

:root {
    --primary-color: #0d6efd;
    --success-color: #198754;
    --warning-color: #ffc107;
    --danger-color: #dc3545;
    --info-color: #0dcaf0;
    --light-color: #f8f9fa;
    --dark-color: #212529;
}

/* Body and general styling */
body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: #f8f9fa;
    line-height: 1.6;
}

/* Navigation enhancements */
.navbar-brand {
    font-weight: 600;
    font-size: 1.4rem;
}

.navbar-nav .nav-link {
    font-weight: 500;
    transition: all 0.3s ease;
}

.navbar-nav .nav-link:hover {
    transform: translateY(-1px);
}

/* Card enhancements */
.card {
    border-radius: 12px;
    transition: all 0.3s ease;
}

.card:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(0,0,0,0.1) !important;
}

.card-header {
    border-radius: 12px 12px 0 0 !important;
    font-weight: 600;
}

/* Form styling */
.form-control, .form-select {
    border-radius: 8px;
    border: 2px solid #e9ecef;
    transition: all 0.3s ease;
}

.form-control:focus, .form-select:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 0.2rem rgba(13, 110, 253, 0.15);
    transform: translateY(-1px);
}

.form-label {
    color: var(--dark-color);
    margin-bottom: 0.75rem;
}

/* Button enhancements */
.btn {
    border-radius: 8px;
    font-weight: 500;
    transition: all 0.3s ease;
    border: none;
}

.btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0,0,0,0.15);
}

.btn-lg {
    padding: 12px 24px;
    font-size: 1.1rem;
}

/* Results section styling */
#resultsSection .card {
    animation: slideInUp 0.5s ease-out;
}

@keyframes slideInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Final height display */
#finalHeight {
    text-shadow: 2px 2px 4px rgba(0,0,0,0.1);
    animation: pulse 2s ease-in-out;
}

@keyframes pulse {
    0% { transform: scale(1); }
    50% { transform: scale(1.05); }
    100% { transform: scale(1); }
}

/* Table styling */
.table {
    border-radius: 8px;
    overflow: hidden;
}

.table thead th {
    border: none;
    font-weight: 600;
    text-transform: uppercase;
    font-size: 0.85rem;
    letter-spacing: 0.5px;
}

.table tbody tr {
    transition: all 0.3s ease;
}

.table tbody tr:hover {
    background-color: rgba(13, 110, 253, 0.05);
    transform: scale(1.01);
}

/* Badge styling */
.badge {
    border-radius: 6px;
    font-weight: 500;
    padding: 6px 12px;
}

/* Info section styling */
.bg-white {
    transition: all 0.3s ease;
}

.bg-white:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(0,0,0,0.1);
}

/* Loading states */
.btn:disabled {
    opacity: 0.7;
    cursor: not-allowed;
}

/* Alert styling */
.alert {
    border-radius: 8px;
    border: none;
    font-weight: 500;
}

/* Footer styling */
footer {
    margin-top: auto;
    border-top: 1px solid #e9ecef;
}

/* Responsive adjustments */
@media (max-width: 768px) {
    .display-5 {
        font-size: 2rem;
    }
    
    .display-6 {
        font-size: 1.75rem;
    }
    
    .card-body {
        padding: 1rem;
    }
    
    .btn-lg {
        padding: 10px 20px;
        font-size: 1rem;
    }
}

/* Custom scrollbar */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: #f1f1f1;
    border-radius: 4px;
}

::-webkit-scrollbar-thumb {
    background: var(--primary-color);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: #0b5ed7;
}

/* Smooth transitions for all elements */
* {
    transition: color 0.3s ease, background-color 0.3s ease, border-color 0.3s ease;
}

/* Focus states for accessibility */
.btn:focus,
.form-control:focus,
.form-select:focus {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

/* Custom orange background for gasoline blend categories */
.bg-orange {
    background-color: #fd7e14 !important;
}

.border-orange {
    border-color: #fd7e14 !important;
}

.text-orange {
    color: #fd7e14 !important;
}

/* Gasoline blend calculator specific styles */
.octane-btn.active {
    background: linear-gradient(135deg, #dc3545 0%, #bb2d3b 100%) !important;
    color: white !important;
    border-color: #dc3545 !important;
    box-shadow: 0 4px 15px rgba(220, 53, 69, 0.4) !important;
    transform: translateY(-2px) scale(1.05);
}

.octane-btn.active:hover {
    background: linear-gradient(135deg, #bb2d3b 0%, #a02632 100%) !important;
    border-color: #bb2d3b !important;
    transform: translateY(-3px) scale(1.08);
}

/* Gradient backgrounds */
.bg-gradient-danger {
    background: linear-gradient(135deg, #dc3545 0%, #bb2d3b 100%) !important;
}

.bg-gradient-success {
    background: linear-gradient(135deg, #198754 0%, #157347 100%) !important;
}

.bg-gradient-info {
    background: linear-gradient(135deg, #0dcaf0 0%, #0aa2c0 100%) !important;
}

.text-gradient-danger {
    background: linear-gradient(135deg, #dc3545 0%, #bb2d3b 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Gasoline card styles */
.gasoline-card {
    border-radius: 16px !important;
    overflow: hidden;
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.gasoline-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.15) !important;
}

.gasoline-results-card {
    border-radius: 16px !important;
    overflow: hidden;
    animation: slideInUp 0.6s ease-out;
}

/* Oktan button styles */
.octane-btn-style {
    border-radius: 12px !important;
    border: 2px solid #dc3545 !important;
    font-weight: 600 !important;
    transition: all 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    position: relative;
    overflow: hidden;
}

.octane-btn-style::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.3);
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.octane-btn-style:hover::before {
    width: 300px;
    height: 300px;
}

.octane-btn-style:hover {
    transform: translateY(-3px) scale(1.05);
    box-shadow: 0 6px 20px rgba(220, 53, 69, 0.3);
}

.octane-number {
    position: relative;
    z-index: 1;
    font-size: 1.1rem;
}

.custom-octane-btn-style {
    border-radius: 12px !important;
    font-weight: 600 !important;
    transition: all 0.3s ease;
}

.custom-octane-btn-style:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(108, 117, 125, 0.3);
}

/* Calculate button */
.calculate-btn-main {
    border-radius: 12px !important;
    font-size: 1.2rem !important;
    box-shadow: 0 6px 20px rgba(220, 53, 69, 0.3);
    transition: all 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    position: relative;
    overflow: hidden;
}

.calculate-btn-main::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.2);
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.calculate-btn-main:hover::before {
    width: 400px;
    height: 400px;
}

.calculate-btn-main:hover {
    transform: translateY(-3px) scale(1.05);
    box-shadow: 0 8px 25px rgba(220, 53, 69, 0.4);
}

.calculate-btn-main:active {
    transform: translateY(-1px) scale(1.02);
}

/* Loading section */
.loading-section {
    padding: 3rem 0;
}

.spinner-lg {
    width: 4rem !important;
    height: 4rem !important;
    border-width: 5px !important;
}

/* Hero section */
.hero-section {
    padding: 2rem 0;
}

/* Form controls enhancement */
.form-control-lg {
    border-radius: 10px !important;
    border: 2px solid #e9ecef !important;
    padding: 0.75rem 1rem !important;
    font-size: 1.1rem !important;
    transition: all 0.3s ease;
}

.form-control-lg:focus {
    border-color: var(--danger-color) !important;
    box-shadow: 0 0 0 0.25rem rgba(220, 53, 69, 0.15) !important;
    transform: translateY(-2px);
}

/* Custom input section */
.custom-input-section {
    background: linear-gradient(135deg, rgba(220, 53, 69, 0.05) 0%, rgba(187, 45, 59, 0.05) 100%);
    padding: 1.5rem;
    border-radius: 12px;
    border: 2px dashed rgba(220, 53, 69, 0.2);
}

/* Products summary table enhancement */
#products-summary table {
    border-radius: 12px;
    overflow: hidden;
}

#products-summary .table thead {
    background: linear-gradient(135deg, #0dcaf0 0%, #0aa2c0 100%);
    color: white;
}

#products-summary .table tbody tr {
    transition: all 0.3s ease;
}

#products-summary .table tbody tr:hover {
    background-color: rgba(13, 202, 240, 0.1);
    transform: scale(1.01);
}

/* Variant cards enhancement */
#variants-list .card {
    border-radius: 12px !important;
    margin-bottom: 1.5rem;
    transition: all 0.3s ease;
    border: 2px solid transparent;
}

#variants-list .card:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15) !important;
    border-color: rgba(0, 0, 0, 0.1);
}

/* Chart container */
#charts-container {
    background: linear-gradient(135deg, rgba(248, 249, 250, 0.8) 0%, rgba(233, 236, 239, 0.8) 100%);
    padding: 2rem;
    border-radius: 12px;
    margin-top: 2rem;
}

/* Responsive improvements */
@media (max-width: 768px) {
    .octane-btn-style {
        font-size: 0.9rem !important;
        padding: 0.5rem !important;
    }
    
    .calculate-btn-main {
        font-size: 1rem !important;
        padding: 0.75rem 2rem !important;
    }
    
    .hero-section h1 {
        font-size: 2rem !important;
    }
    
    /* Navigation improvements */
    .navbar-brand {
        font-size: 1.1rem !important;
    }
    
    .navbar-nav {
        text-align: center;
        margin-top: 1rem;
    }
    
    /* Card improvements */
    .card-body {
        padding: 1rem !important;
    }
    
    .card-header {
        padding: 0.75rem 1rem !important;
        font-size: 1rem !important;
    }
    
    /* Table improvements - make scrollable */
    .table-responsive {
        -webkit-overflow-scrolling: touch;
    }
    
    /* Form improvements */
    .form-control-lg,
    .form-select-lg {
        font-size: 1rem !important;
        padding: 0.5rem 0.75rem !important;
    }
    
    /* Button improvements */
    .btn-lg {
        padding: 0.75rem 1.5rem !important;
        font-size: 1rem !important;
    }
    
    /* Footer improvements */
    footer .row {
        text-align: center;
    }
    
    footer .col-md-6 {
        margin-bottom: 0.5rem;
    }
    
    /* Display improvements */
    .display-4 {
        font-size: 1.75rem !important;
    }
    
    .display-5 {
        font-size: 1.5rem !important;
    }
    
    /* Spacing improvements */
    .mb-5 {
        margin-bottom: 2rem !important;
    }
    
    .mt-5 {
        margin-top: 2rem !important;
    }
    
    /* Container padding */
    .container {
        padding-left: 0.75rem;
        padding-right: 0.75rem;
    }
    
    /* Results header buttons */
    .card-header .d-flex {
        flex-direction: column;
        gap: 0.5rem !important;
    }
    
    .card-header .btn-sm {
        width: 100%;
        margin-bottom: 0.25rem;
    }
    
    /* Variant cards improvements */
    #variants-list .card-body {
        padding: 1rem !important;
    }
    
    /* Chart container */
    #charts-container {
        padding: 1rem !important;
    }
    
    /* Product selection table */
    #selected-products-list table {
        font-size: 0.875rem;
    }
    
    #selected-products-list th,
    #selected-products-list td {
        padding: 0.5rem !important;
        white-space: nowrap;
    }
    
    /* History page improvements */
    .table-responsive {
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
    }
    
    /* History page improvements */
    .table-responsive {
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
    }
    
    /* History page - pagination improvements */
    .pagination {
        flex-wrap: wrap;
        justify-content: center;
    }
    
    .pagination .page-item {
        margin: 0.25rem;
    }
    
    .pagination .page-link {
        border-radius: 6px;
        padding: 0.5rem 0.75rem;
        font-size: 0.875rem;
    }
}

/* Extra small devices (phones, less than 576px) */
@media (max-width: 575.98px) {
    /* Navigation */
    .navbar-brand {
        font-size: 1rem !important;
    }
    
    /* Hero section */
    .hero-section h1 {
        font-size: 1.5rem !important;
    }
    
    .hero-section .lead {
        font-size: 0.9rem !important;
    }
    
    /* Cards */
    .card-title {
        font-size: 1.1rem !important;
    }
    
    /* Buttons */
    .btn {
        font-size: 0.875rem !important;
        padding: 0.5rem 1rem !important;
    }
    
    .btn-lg {
        padding: 0.625rem 1.25rem !important;
        font-size: 0.9rem !important;
    }
    
    /* Octane buttons */
    .octane-btn-style {
        font-size: 0.8rem !important;
        padding: 0.4rem 0.5rem !important;
    }
    
    .octane-number {
        font-size: 0.9rem !important;
    }
    
    /* Forms */
    .form-label {
        font-size: 0.875rem !important;
        margin-bottom: 0.5rem !important;
    }
    
    .form-control,
    .form-select {
        font-size: 0.875rem !important;
        padding: 0.5rem 0.75rem !important;
    }
    
    /* Tables */
    .table {
        font-size: 0.8rem !important;
    }
    
    .table th,
    .table td {
        padding: 0.375rem 0.5rem !important;
    }
    
    /* Spacing */
    .mb-4 {
        margin-bottom: 1rem !important;
    }
    
    .mt-4 {
        margin-top: 1rem !important;
    }
    
    /* Badges */
    .badge {
        font-size: 0.75rem !important;
        padding: 0.25rem 0.5rem !important;
    }
    
    /* Icons */
    .bi {
        font-size: 1rem !important;
    }
    
    /* Container */
    .container {
        padding-left: 0.5rem;
        padding-right: 0.5rem;
    }
    
    /* Calculator selector cards */
    .card-body p.card-text {
        font-size: 0.875rem !important;
    }
    
    .card-body ul {
        font-size: 0.8rem !important;
    }
    
    /* Results container */
    #results-container .card-header h4 {
        font-size: 1rem !important;
    }
}

/* Medium devices (tablets, 768px and up) */
@media (min-width: 768px) and (max-width: 991.98px) {
    .card-body {
        padding: 1.25rem !important;
    }
    
    .container {
        max-width: 720px;
    }
}

/* Large devices (desktops, 992px and up) */
@media (min-width: 992px) {
    .container {
        max-width: 960px;
    }
}

/* Product Selection Page Styles */
.product-selection-card {
    border-radius: 16px !important;
    overflow: hidden;
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.product-selection-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.15) !important;
}

.bg-gradient-primary {
    background: linear-gradient(135deg, #0d6efd 0%, #0b5ed7 100%) !important;
}

.text-gradient-primary {
    background: linear-gradient(135deg, #0d6efd 0%, #0b5ed7 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.continue-card {
    border-radius: 16px !important;
    background: linear-gradient(135deg, rgba(25, 135, 84, 0.05) 0%, rgba(20, 108, 67, 0.05) 100%);
    border: 2px dashed rgba(25, 135, 84, 0.2);
    transition: all 0.3s ease;
}

.continue-card:hover {
    border-color: rgba(25, 135, 84, 0.4);
    transform: translateY(-2px);
}

.continue-btn-main {
    border-radius: 12px !important;
    font-size: 1.1rem !important;
    box-shadow: 0 6px 20px rgba(220, 53, 69, 0.3);
    transition: all 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    position: relative;
    overflow: hidden;
}

.continue-btn-main::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.2);
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.continue-btn-main:hover::before {
    width: 400px;
    height: 400px;
}

.continue-btn-main:hover {
    transform: translateY(-3px) scale(1.05);
    box-shadow: 0 8px 25px rgba(220, 53, 69, 0.4);
}

.continue-btn-main:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

/* Form controls enhancement for product selection */
.form-select-lg {
    border-radius: 10px !important;
    border: 2px solid #e9ecef !important;
    padding: 0.75rem 1rem !important;
    font-size: 1.1rem !important;
    transition: all 0.3s ease;
}

.form-select-lg:focus {
    border-color: var(--primary-color) !important;
    box-shadow: 0 0 0 0.25rem rgba(13, 110, 253, 0.15) !important;
    transform: translateY(-2px);
}

/* Product mobile cards */
.product-mobile-card {
    border-radius: 12px !important;
    transition: all 0.3s ease;
}

.product-mobile-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.1) !important;
}

/* Hero section */
.hero-section {
    padding: 2rem 0;
}

/* Responsive adjustments */
@media (max-width: 768px) {
    .hero-section h1 {
        font-size: 2rem !important;
    }
    
    .hero-section .lead {
        font-size: 1rem !important;
    }
    
    .continue-btn-main {
        font-size: 1rem !important;
        padding: 0.75rem 1.5rem !important;
    }
    
    .product-selection-card .card-body {
        padding: 1.5rem !important;
    }
}

/* Print styles improvements */
@media print {
    .navbar,
    footer,
    .btn,
    #errorSection,
    .card-header .btn {
        display: none !important;
    }
    
    .card {
        border: 1px solid #000 !important;
        box-shadow: none !important;
        page-break-inside: avoid;
    }
    
    body {
        background: white !important;
        font-size: 12pt;
    }
    
    .table {
        font-size: 10pt !important;
    }
}

/* Smooth card animations for results */
#variants-list .card {
    animation: fadeInUp 0.5s ease-out;
}

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

/* Print styles */
@media print {
    .navbar,
    footer,
    .btn,
    #errorSection {
        display: none !important;
    }
    
    .card {
        border: 1px solid #000 !important;
        box-shadow: none !important;
    }
    
    body {
        background: white !important;
    }
}