/* 
 * Concrete Calculator Styles 
 */

:root {
    --primary-color: #F59E0B;
    --secondary-color: #D97706;
    --accent-color: #FBBF24;
    --background-color: #FFFFFF;
    --card-background-color: #F9FAFB;
    --secondary-background-color: #F3F4F6;
    --text-primary: #111827;
    --text-secondary: #4B5563;
    --text-muted: #9CA3AF;
    --border-radius: 0.5rem;
    --box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --transition: all 0.3s ease;
    --light-color: #E5E7EB;
    --primary-rgb: 59, 130, 246;
    --secondary-rgb: 14, 165, 233;
    --primary-light: rgba(59, 130, 246, 0.1);
    --secondary-light: rgba(14, 165, 233, 0.1);
    --dark-bg: #1f2937;
    --dark-card-bg: #2d3748;
    --dark-border: #4b5563;
    --dark-text: #e5e7eb;
    --dark-text-muted: #9ca3af;
}

/* Dark Mode Variables */
.dark {
    --background-color: #111827;
    --card-background-color: #1F2937;
    --secondary-background-color: #374151;
    --text-primary: #F9FAFB;
    --text-secondary: #D1D5DB;
    --text-muted: #9CA3AF;
    --light-color: #374151;
}

/* General container styles */
.calculator-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
    color: var(--text-primary);
}

.concrete-calculator .container {
    padding: 0 15px;
}

/* Breadcrumb Styles */
.breadcrumbs {
    margin-bottom: 20px;
    background-color: var(--secondary-background-color);
    padding: 10px 0;
}

.breadcrumb-list {
    display: flex;
    flex-wrap: wrap;
    list-style: none;
    margin: 0;
    padding: 0;
}

.breadcrumb-item {
    display: flex;
    align-items: center;
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.breadcrumb-item + .breadcrumb-item {
    padding-left: 10px;
}

.breadcrumb-item + .breadcrumb-item::before {
    content: "/";
    padding-right: 10px;
    color: var(--text-muted);
}

.breadcrumb-item a {
    color: var(--primary-color);
    text-decoration: none;
}

.breadcrumb-item a:hover {
    text-decoration: underline;
    color: var(--secondary-color);
}

.breadcrumb-item.active {
    color: var(--text-secondary);
}

/* Header Styles */
.calculator-header {
    text-align: center;
    margin-bottom: 30px;
    padding-bottom: 20px;
    border-bottom: 1px solid var(--light-color);
    position: relative;
}

.calculator-header h1 {
    font-size: 2.5rem;
    color: var(--text-primary);
    margin-bottom: 15px;
}

.calculator-header p {
    font-size: 1.1rem;
    color: var(--text-secondary);
    max-width: 800px;
    margin: 0 auto;
}

/* Section Styles */
.calculator-section, 
.results-section, 
.tips-section, 
.faq-section {
    background-color: var(--card-background-color);
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    margin-bottom: 30px;
    padding: 25px;
    transition: background-color 0.3s ease;
}

.calculator-title,
.results-header,
.tips-header,
.faq-header {
    font-size: 1.5rem;
    color: var(--primary-color);
    margin-bottom: 20px;
    padding-bottom: 10px;
    border-bottom: 1px solid var(--light-color);
    transition: color 0.3s ease, border-color 0.3s ease;
}

/* Layout Styles */
.calculator-layout {
    display: flex;
    flex-wrap: wrap;
    gap: 30px;
    margin-bottom: 30px;
}

.calculator-left-column {
    flex: 1 1 600px;
}

.calculator-right-column {
    flex: 1 1 400px;
}

/* Shape Tabs */
.shape-tabs {
    display: flex;
    flex-wrap: wrap;
    margin-bottom: 20px;
    border-bottom: 1px solid var(--light-color);
}

.shape-tab {
    padding: 10px 15px;
    cursor: pointer;
    color: var(--text-secondary);
    border-bottom: 2px solid transparent;
    transition: var(--transition);
    margin-right: 5px;
    border-top-left-radius: 0.5rem;
    border-top-right-radius: 0.5rem;
}

.shape-tab:hover {
    color: var(--primary-color);
    background-color: rgba(245, 158, 11, 0.05);
}

.shape-tab.active {
    color: var(--primary-color);
    border-bottom: 2px solid var(--primary-color);
    font-weight: 600;
    background-color: rgba(245, 158, 11, 0.1);
}

/* Form Container */
.calculator-form-container {
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
}

.calculator-form {
    flex: 1 1 300px;
}

.calculator-visualization {
    flex: 1 1 250px;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* Form Styles */
.shape-form {
    display: none;
}

.shape-form.active {
    display: block;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 5px;
    color: var(--text-secondary);
    font-weight: 500;
}

.input-group {
    display: flex;
    align-items: stretch;
    width: 100%;
}

.form-control {
    display: block;
    width: 100%;
    padding: 0.5rem 0.75rem;
    font-size: 1rem;
    line-height: 1.5;
    color: var(--text-primary);
    background-color: var(--background-color);
    border: 1px solid var(--light-color);
    border-radius: var(--border-radius);
    transition: var(--transition);
}

.input-group-text {
    display: flex;
    align-items: center;
    padding: 0.5rem 0.75rem;
    font-size: 1rem;
    font-weight: 400;
    color: var(--text-secondary);
    text-align: center;
    background-color: var(--secondary-background-color);
    border: 1px solid var(--light-color);
    border-left: 0;
    border-top-right-radius: var(--border-radius);
    border-bottom-right-radius: var(--border-radius);
}

.form-control:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(245, 158, 11, 0.25);
}

.form-select {
    display: block;
    width: 100%;
    padding: 0.5rem 2.25rem 0.5rem 0.75rem;
    font-size: 1rem;
    line-height: 1.5;
    color: var(--text-primary);
    background-color: var(--background-color);
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3e%3cpath fill='none' stroke='%23343a40' stroke-linecap='round' stroke-linejoin='round' stroke-width='2' d='M2 5l6 6 6-6'/%3e%3c/svg%3e");
    background-repeat: no-repeat;
    background-position: right 0.75rem center;
    background-size: 16px 12px;
    border: 1px solid var(--light-color);
    border-radius: var(--border-radius);
    appearance: none;
}

.form-select:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(245, 158, 11, 0.25);
}

.btn-group {
    display: flex;
    gap: 10px;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.5rem 1rem;
    font-size: 1rem;
    font-weight: 500;
    line-height: 1.5;
    text-align: center;
    cursor: pointer;
    user-select: none;
    border: 1px solid transparent;
    border-radius: var(--border-radius);
    transition: var(--transition);
    gap: 0.5rem;
}

.btn svg {
    width: 1.25em;
    height: 1.25em;
}

.btn-primary {
    color: white;
    background-color: var(--primary-color);
    border-color: var(--primary-color);
}

.btn-primary:hover {
    background-color: var(--secondary-color);
    border-color: var(--secondary-color);
}

.btn-secondary {
    color: var(--text-primary);
    background-color: var(--secondary-background-color);
    border-color: var(--light-color);
}

.btn-secondary:hover {
    background-color: var(--light-color);
}

.btn-reset {
    color: var(--text-secondary);
    background-color: transparent;
    border-color: var(--light-color);
}

.btn-reset:hover {
    background-color: var(--secondary-background-color);
}

.invalid-feedback {
    display: none;
    width: 100%;
    margin-top: 0.25rem;
    font-size: 0.875em;
    color: #dc3545;
}

.form-control.is-invalid {
    border-color: #dc3545;
    padding-right: calc(1.5em + 0.75rem);
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 12 12' width='12' height='12' fill='none' stroke='%23dc3545'%3e%3ccircle cx='6' cy='6' r='4.5'/%3e%3cpath stroke-linejoin='round' d='M5.8 3.6h.4L6 6.5z'/%3e%3ccircle cx='6' cy='8.2' r='.6' fill='%23dc3545' stroke='none'/%3e%3c/svg%3e");
    background-repeat: no-repeat;
    background-position: right calc(0.375em + 0.1875rem) center;
    background-size: calc(0.75em + 0.375rem) calc(0.75em + 0.375rem);
}

.form-control.is-invalid + .input-group-text {
    border-color: #dc3545;
}

.form-control.is-invalid ~ .invalid-feedback {
    display: block;
}

/* Shape Visualization Styles */
.shape-visualization {
    display: none;
}

.shape-visualization.active {
    display: flex;
    justify-content: center;
    align-items: center;
}

.shape-svg {
    width: 100%;
    max-width: 300px;
    height: auto;
}

.shape-face {
    fill: rgba(245, 158, 11, 0.2);
    stroke: var(--primary-color);
    stroke-width: 2;
}

.shape-face-top {
    fill: rgba(245, 158, 11, 0.3);
}

.shape-face-right {
    fill: rgba(245, 158, 11, 0.1);
}

.shape-face-side {
    fill: rgba(245, 158, 11, 0.15);
}

.shape-face-front {
    fill: rgba(245, 158, 11, 0.25);
}

.shape-face-back {
    fill: rgba(245, 158, 11, 0.2);
}

.shape-face-left {
    fill: rgba(245, 158, 11, 0.1);
}

.dimension-line {
    stroke: var(--text-secondary);
    stroke-width: 1;
    stroke-dasharray: 5,5;
}

.dimension-label {
    font-size: 12px;
    fill: var(--text-secondary);
    font-weight: 500;
    text-anchor: middle;
}

/* Results Styles */
.results-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
    margin-bottom: 20px;
}

.result-card {
    background-color: var(--background-color);
    padding: 20px;
    border-radius: var(--border-radius);
    text-align: center;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
}

.result-value {
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 5px;
}

.result-label {
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-bottom: 5px;
}

.result-unit {
    font-size: 0.8rem;
    color: var(--text-muted);
    font-weight: 500;
}

.results-actions {
    display: flex;
    justify-content: center;
    gap: 15px;
    margin-top: 20px;
}

/* Tips Styles */
.tips-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
}

.tip-card {
    background-color: var(--background-color);
    padding: 20px;
    border-radius: var(--border-radius);
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
}

.tip-card h3 {
    color: var(--primary-color);
    font-size: 1.2rem;
    margin-bottom: 10px;
    font-weight: 600;
}

.tip-card p {
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.5;
}

/* FAQ Styles */
.faq-list {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.faq-item {
    border: 1px solid var(--light-color);
    border-radius: var(--border-radius);
    overflow: hidden;
}

.faq-question {
    padding: 15px 20px;
    background-color: var(--background-color);
    color: var(--text-primary);
    font-weight: 600;
    cursor: pointer;
    position: relative;
    display: flex;
    align-items: center;
    transition: var(--transition);
}

.faq-question::after {
    content: "+";
    position: absolute;
    right: 20px;
    font-size: 1.25rem;
    transition: transform 0.3s ease;
}

.faq-item.active .faq-question::after {
    content: "-";
}

.faq-answer {
    padding: 0 20px;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease, padding 0.3s ease;
    background-color: var(--background-color);
}

.faq-item.active .faq-answer {
    padding: 15px 20px;
    max-height: 1000px;
}

.faq-answer p {
    color: var(--text-secondary);
    margin-bottom: 10px;
    line-height: 1.6;
}

.faq-answer ul {
    padding-left: 20px;
    margin-bottom: 10px;
}

.faq-answer li {
    margin-bottom: 5px;
    color: var(--text-secondary);
}

/* Animations */
@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.fade-in {
    animation: fadeIn 0.3s forwards;
}

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

.pulse {
    animation: pulse 0.5s ease-in-out;
}

/* Theme Toggle Button */
.theme-toggle {
    position: absolute;
    top: 1rem;
    right: 1rem;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background-color: var(--background-color);
    border: 1px solid var(--light-color);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: var(--transition);
    color: var(--text-primary);
}

.theme-toggle:hover {
    background-color: var(--secondary-background-color);
    transform: scale(1.1);
}

/* Validation Styles */
.input-valid {
    border-color: #198754 !important;
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 8 8'%3e%3cpath fill='%23198754' d='M2.3 6.73L.6 4.53c-.4-1.04.46-1.4 1.1-.8l1.1 1.4 3.4-3.8c.6-.63 1.6-.27 1.2.7l-4 4.6c-.43.5-.8.4-1.1.1z'/%3e%3c/svg%3e") !important;
    background-repeat: no-repeat !important;
    background-position: right calc(0.375em + 0.1875rem) center !important;
    background-size: calc(0.75em + 0.375rem) calc(0.75em + 0.375rem) !important;
}

.input-invalid {
    border-color: #dc3545 !important;
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 12 12' width='12' height='12' fill='none' stroke='%23dc3545'%3e%3ccircle cx='6' cy='6' r='4.5'/%3e%3cpath stroke-linejoin='round' d='M5.8 3.6h.4L6 6.5z'/%3e%3ccircle cx='6' cy='8.2' r='.6' fill='%23dc3545' stroke='none'/%3e%3c/svg%3e") !important;
    background-repeat: no-repeat !important;
    background-position: right calc(0.375em + 0.1875rem) center !important;
    background-size: calc(0.75em + 0.375rem) calc(0.75em + 0.375rem) !important;
}

.validation-error {
    display: none;
    color: #dc3545;
    font-size: 0.875rem;
    margin-top: 0.25rem;
}

.input-invalid + .input-group-text,
.input-invalid ~ .validation-error {
    display: block;
    border-color: #dc3545;
}

.input-success {
    animation: success-pulse 0.5s ease;
}

.input-shake {
    animation: shake 0.5s ease;
}

.error-appear {
    animation: fade-in 0.3s ease;
}

/* Animation keyframes */
@keyframes success-pulse {
    0% {
        box-shadow: 0 0 0 0 rgba(25, 135, 84, 0.4);
    }
    70% {
        box-shadow: 0 0 0 10px rgba(25, 135, 84, 0);
    }
    100% {
        box-shadow: 0 0 0 0 rgba(25, 135, 84, 0);
    }
}

@keyframes shake {
    0% {
        transform: translateX(0);
    }
    25% {
        transform: translateX(-10px);
    }
    50% {
        transform: translateX(10px);
    }
    75% {
        transform: translateX(-10px);
    }
    100% {
        transform: translateX(0);
    }
}

@keyframes fade-in {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Dark mode styles */
.dark .calculator-container {
    color: var(--text-primary);
}

.dark .calculator-header,
.dark .results-section, 
.dark .tips-section, 
.dark .faq-section,
.dark .calculator-section {
    background-color: var(--card-background-color);
    border-color: var(--light-color);
}

.dark .calculator-title,
.dark .results-header,
.dark .tips-header,
.dark .faq-header {
    color: var(--primary-color);
    border-color: var(--light-color);
}

.dark .form-group label {
    color: var(--text-secondary);
}

.dark .form-control {
    color: var(--text-primary);
    background-color: var(--background-color);
    border-color: var(--light-color);
}

.dark .form-control:focus {
    border-color: var(--primary-color);
}

.dark .btn-calculate {
    background-color: var(--primary-color);
    color: white;
}

.dark .btn-reset {
    color: var(--text-secondary);
    border-color: var(--light-color);
}

.dark .result-value {
    color: var(--primary-color);
}

.dark .shape-svg {
    stroke: var(--text-secondary);
}

.dark .input-invalid {
    border-color: #dc3545;
}

.dark .input-valid {
    border-color: #198754;
}

.dark .validation-error {
    color: #dc3545;
}

.dark .faq-item {
    border-color: var(--light-color);
}

.dark .faq-question {
    background-color: var(--background-color);
    color: var(--text-primary);
}

.dark .faq-answer {
    background-color: var(--background-color);
    color: var(--text-secondary);
}

/* Responsive styles */
@media (max-width: 1024px) {
    .calculator-layout {
        flex-direction: column;
    }
    
    .calculator-right-column {
        flex: 1 1 100%;
    }
    
    .tips-section {
        flex-direction: column;
    }
}

@media (max-width: 768px) {
    .calculator-header h1 {
        font-size: 2rem;
    }
    
    .calculator-form-container {
        flex-direction: column;
    }
    
    .tips-content {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 576px) {
    .results-grid {
        grid-template-columns: 1fr;
    }
    
    .shape-tabs {
        flex-wrap: nowrap;
        overflow-x: auto;
        white-space: nowrap;
        -webkit-overflow-scrolling: touch;
    }
    
    .shape-tab {
        padding: 8px 12px;
        font-size: 0.9rem;
    }
}

@media print {
    .calculator-header, 
    .calculator-section, 
    .tips-section, 
    .faq-section,
    .breadcrumbs,
    .theme-toggle {
        display: none;
    }
    
    .results-section {
        box-shadow: none;
        border: 1px solid #ccc;
    }
    
    .calculator-container {
        max-width: 100%;
        margin: 0;
        padding: 0;
    }
    
    .results-actions {
        display: none;
    }
}

/* Enhanced Explore Section Styles */
.explore-section,
.categories-section {
    margin: 3rem 0;
    padding: 2rem;
    border-radius: 8px;
    background-color: var(--bg-light);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
}

.explore-header,
.categories-header {
    margin-bottom: 2rem;
    padding-bottom: 1rem;
    font-size: 1.75rem;
    color: var(--primary-color);
    border-bottom: 2px solid var(--border-color);
}

.explore-grid,
.categories-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.explore-card,
.category-card {
    display: flex;
    flex-direction: column;
    background-color: #fff;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 3px 10px rgba(0, 0, 0, 0.08);
    transition: transform 0.2s, box-shadow 0.2s;
    height: 100%;
}

.hover-effect:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.12);
}

.explore-card-image,
.category-card-icon {
    padding: 2rem;
    display: flex;
    justify-content: center;
    align-items: center;
    background-color: var(--primary-light);
}

.explore-card-image svg,
.category-card-icon svg {
    height: 60px;
    width: 60px;
    color: var(--primary-color);
}

.explore-card-content,
.category-card-content {
    padding: 1.5rem;
    flex-grow: 1;
    display: flex;
    flex-direction: column;
}

.explore-card-title,
.category-card-title {
    margin-top: 0;
    margin-bottom: 0.75rem;
    font-size: 1.25rem;
    color: var(--dark-color);
}

.explore-card-text,
.category-card-text {
    color: var(--text-color);
    margin-bottom: 1.25rem;
    line-height: 1.5;
    flex-grow: 1;
}

.explore-card-meta {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 1rem;
}

.explore-card-badge {
    background-color: var(--primary-light);
    color: var(--primary-color);
    padding: 0.25rem 0.75rem;
    border-radius: 4px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
}

.explore-card-badge:nth-child(2) {
    background-color: var(--secondary-light);
    color: var(--secondary-color);
}

.category-card-count {
    font-size: 0.875rem;
    color: var(--text-muted);
    margin-bottom: 1rem;
}

.explore-card-link,
.category-card-link {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.5rem 0;
    color: var(--primary-color);
    font-weight: 600;
    transition: color 0.2s;
    text-decoration: none;
    margin-top: auto;
}

.explore-card-link:hover,
.category-card-link:hover {
    color: var(--primary-dark);
}

.explore-card-link svg,
.category-card-link svg {
    margin-left: 0.5rem;
    transition: transform 0.2s;
}

.explore-card-link:hover svg,
.category-card-link:hover svg {
    transform: translateX(4px);
}

.explore-more-button {
    display: flex;
    justify-content: center;
    margin-top: 1.5rem;
}

.explore-more-button .btn {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    font-weight: 600;
}

/* Dark mode styles */
.dark .explore-section,
.dark .categories-section {
    background-color: var(--dark-bg);
    border: 1px solid var(--dark-border);
}

.dark .explore-header,
.dark .categories-header {
    color: #fff;
    border-bottom-color: var(--dark-border);
}

.dark .explore-card,
.dark .category-card {
    background-color: var(--dark-card-bg);
    border: 1px solid var(--dark-border);
}

.dark .explore-card-image,
.dark .category-card-icon {
    background-color: rgba(var(--primary-rgb), 0.15);
}

.dark .explore-card-title,
.dark .category-card-title {
    color: var(--dark-text);
}

.dark .explore-card-text,
.dark .category-card-text {
    color: var(--dark-text-muted);
}

.dark .explore-card-badge {
    background-color: rgba(var(--primary-rgb), 0.15);
}

.dark .explore-card-badge:nth-child(2) {
    background-color: rgba(var(--secondary-rgb), 0.15);
}

.dark .category-card-count {
    color: var(--dark-text-muted);
}

/* Responsive adjustments */
@media screen and (max-width: 768px) {
    .explore-grid,
    .categories-grid {
        grid-template-columns: 1fr;
    }
    
    .explore-section,
    .categories-section {
        padding: 1.5rem;
    }
}