/* CSS Variables for Design System */
:root {
    /* Colors */
    --primary: #2563eb;
    --primary-dark: #1d4ed8;
    --primary-light: #3b82f6;
    --secondary: #10b981;
    --accent: #f59e0b;
    --danger: #ef4444;
    --warning: #f59e0b;
    --success: #10b981;
    
    /* Neutrals */
    --gray-50: #f9fafb;
    --gray-100: #f3f4f6;
    --gray-200: #e5e7eb;
    --gray-300: #d1d5db;
    --gray-400: #9ca3af;
    --gray-500: #6b7280;
    --gray-600: #4b5563;
    --gray-700: #374151;
    --gray-800: #1f2937;
    --gray-900: #111827;
    
    /* Background */
    --bg-primary: #ffffff;
    --bg-secondary: #f9fafb;
    --bg-accent: #f3f4f6;
    
    /* Text */
    --text-primary: #111827;
    --text-secondary: #6b7280;
    --text-accent: #374151;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    
    /* Border Radius */
    --radius-sm: 0.375rem;
    --radius: 0.5rem;
    --radius-md: 0.75rem;
    --radius-lg: 1rem;
    --radius-xl: 1.5rem;
    
    /* Spacing */
    --space-1: 0.25rem;
    --space-2: 0.5rem;
    --space-3: 0.75rem;
    --space-4: 1rem;
    --space-5: 1.25rem;
    --space-6: 1.5rem;
    --space-8: 2rem;
    --space-10: 2.5rem;
    --space-12: 3rem;
    --space-16: 4rem;
    --space-20: 5rem;
    
    /* Transitions */
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-fast: all 0.15s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Dark Theme Variables */
[data-theme="dark"] {
    --bg-primary: #111827;
    --bg-secondary: #1f2937;
    --bg-accent: #374151;
    
    --text-primary: #f9fafb;
    --text-secondary: #d1d5db;
    --text-accent: #e5e7eb;
    
    --gray-50: #1f2937;
    --gray-100: #374151;
    --gray-200: #4b5563;
    --gray-300: #6b7280;
    --gray-800: #f3f4f6;
    --gray-900: #f9fafb;
}

/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    transition: var(--transition);
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.25;
    margin-bottom: var(--space-4);
}

h1 { font-size: 2.5rem; }
h2 { font-size: 2rem; }
h3 { font-size: 1.5rem; }
h4 { font-size: 1.25rem; }
h5 { font-size: 1.125rem; }
h6 { font-size: 1rem; }

p {
    margin-bottom: var(--space-4);
    color: var(--text-secondary);
}

/* Container */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-4);
}

/* Header */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--gray-200);
    z-index: 1000;
    transition: var(--transition);
}

[data-theme="dark"] .header {
    background: rgba(17, 24, 39, 0.95);
    border-bottom-color: var(--gray-700);
}

.navbar {
    padding: var(--space-4) 0;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-4);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    font-weight: 700;
    font-size: 1.25rem;
    color: var(--primary);
}

.nav-brand i {
    font-size: 1.5rem;
}

.nav-search {
    position: relative;
    flex: 1;
    max-width: 400px;
    margin: 0 var(--space-8);
}

.search-input {
    width: 100%;
    padding: var(--space-3) var(--space-4) var(--space-3) var(--space-12);
    border: 1px solid var(--gray-300);
    border-radius: var(--radius-lg);
    background: var(--bg-primary);
    color: var(--text-primary);
    font-size: 0.875rem;
    transition: var(--transition);
}

.search-input:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.search-icon {
    position: absolute;
    left: var(--space-4);
    top: 50%;
    transform: translateY(-50%);
    color: var(--gray-400);
}

.nav-actions {
    display: flex;
    align-items: center;
    gap: var(--space-3);
}

.btn-theme, .btn-menu {
    width: 40px;
    height: 40px;
    border: none;
    background: var(--gray-100);
    color: var(--text-secondary);
    border-radius: var(--radius);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}

.btn-theme:hover, .btn-menu:hover {
    background: var(--gray-200);
    color: var(--text-primary);
}

.btn-menu {
    display: none;
}

/* Hero Section */
.hero {
    padding: var(--space-20) 0 var(--space-16);
    margin-top: 80px;
    background: linear-gradient(135deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grid" width="10" height="10" patternUnits="userSpaceOnUse"><path d="M 10 0 L 0 0 0 10" fill="none" stroke="%23e5e7eb" stroke-width="0.5"/></pattern></defs><rect width="100" height="100" fill="url(%23grid)"/></svg>');
    opacity: 0.5;
}

.hero-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-4);
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-16);
    align-items: center;
    position: relative;
    z-index: 1;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 700;
    margin-bottom: var(--space-6);
    line-height: 1.1;
}

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

.hero-description {
    font-size: 1.125rem;
    margin-bottom: var(--space-8);
    color: var(--text-secondary);
}

.hero-stats {
    display: flex;
    gap: var(--space-8);
}

.stat {
    text-align: center;
}

.stat-number {
    display: block;
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary);
}

.stat-label {
    display: block;
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.hero-visual {
    display: flex;
    justify-content: center;
    align-items: center;
}

.hero-chart {
    width: 300px;
    height: 300px;
    background: var(--bg-primary);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl);
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
}

/* Categories Section */
.categories {
    padding: var(--space-20) 0;
    background: var(--bg-primary);
}

.section-header {
    text-align: center;
    margin-bottom: var(--space-16);
}

.section-title {
    font-size: 2.5rem;
    margin-bottom: var(--space-4);
}

.section-description {
    font-size: 1.125rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

.categories-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--space-6);
}

.category-card {
    background: var(--bg-primary);
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-lg);
    padding: var(--space-6);
    transition: var(--transition);
    cursor: pointer;
    position: relative;
    overflow: hidden;
}

.category-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background: var(--primary);
    transform: scaleY(0);
    transform-origin: bottom;
    transition: var(--transition);
}

.category-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary);
}

.category-card:hover::before {
    transform: scaleY(1);
}

.category-header {
    display: flex;
    align-items: center;
    gap: var(--space-4);
    margin-bottom: var(--space-4);
}

.category-icon {
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, var(--primary), var(--primary-light));
    color: white;
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
}

.category-title {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: var(--space-1);
}

.category-count {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.category-description {
    color: var(--text-secondary);
    margin-bottom: var(--space-4);
    font-size: 0.875rem;
}

.category-calculators {
    display: grid;
    gap: var(--space-2);
}

.calculator-item {
    padding: var(--space-3);
    background: var(--bg-secondary);
    border-radius: var(--radius);
    font-size: 0.875rem;
    color: var(--text-accent);
    border: 1px solid transparent;
    transition: var(--transition);
    cursor: pointer;
}

.calculator-item:hover {
    background: var(--primary);
    color: white;
    border-color: var(--primary);
}

/* Modal Styles */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 2000;
    display: none;
    align-items: center;
    justify-content: center;
}

.modal.active {
    display: flex;
}

.modal-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(4px);
}

.modal-content {
    background: var(--bg-primary);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
    width: 90%;
    max-width: 800px;
    max-height: 90vh;
    overflow: hidden;
    position: relative;
    z-index: 1;
    animation: modalSlideIn 0.3s ease-out;
}

@keyframes modalSlideIn {
    from {
        opacity: 0;
        transform: scale(0.9) translateY(-20px);
    }
    to {
        opacity: 1;
        transform: scale(1) translateY(0);
    }
}

.modal-header {
    padding: var(--space-6);
    border-bottom: 1px solid var(--gray-200);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.modal-title {
    margin: 0;
    font-size: 1.5rem;
}

.modal-close {
    width: 32px;
    height: 32px;
    border: none;
    background: var(--gray-100);
    color: var(--text-secondary);
    border-radius: var(--radius);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}

.modal-close:hover {
    background: var(--gray-200);
    color: var(--text-primary);
}

.modal-body {
    padding: var(--space-6);
    max-height: 60vh;
    overflow-y: auto;
}

.modal-footer {
    padding: var(--space-6);
    border-top: 1px solid var(--gray-200);
    display: flex;
    gap: var(--space-3);
    justify-content: flex-end;
}

/* Calculator Form Styles */
.calculator-form {
    display: grid;
    gap: var(--space-6);
}

.form-group {
    display: grid;
    gap: var(--space-2);
}

.form-label {
    font-weight: 500;
    color: var(--text-primary);
}

.form-input, .form-select {
    padding: var(--space-3);
    border: 1px solid var(--gray-300);
    border-radius: var(--radius);
    background: var(--bg-primary);
    color: var(--text-primary);
    font-size: 0.875rem;
    transition: var(--transition);
}

.form-input:focus, .form-select:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-4);
}

.result-section {
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
    padding: var(--space-6);
    margin-top: var(--space-6);
}

.result-title {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: var(--space-4);
    color: var(--primary);
}

.result-grid {
    display: grid;
    gap: var(--space-4);
}

.result-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--space-3);
    background: var(--bg-primary);
    border-radius: var(--radius);
}

.result-label {
    font-weight: 500;
    color: var(--text-accent);
}

.result-value {
    font-weight: 600;
    color: var(--primary);
    font-size: 1.125rem;
}

/* Button Styles */
.btn {
    padding: var(--space-3) var(--space-6);
    border: none;
    border-radius: var(--radius);
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    text-decoration: none;
    font-size: 0.875rem;
}

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

.btn-primary:hover {
    background: var(--primary-dark);
}

.btn-secondary {
    background: var(--gray-100);
    color: var(--text-accent);
}

.btn-secondary:hover {
    background: var(--gray-200);
}

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

.btn-success:hover {
    background: #059669;
}

.btn-calculate {
    width: 100%;
    padding: var(--space-4);
    font-size: 1rem;
    font-weight: 600;
    background: linear-gradient(135deg, var(--primary), var(--primary-light));
    color: white;
    border: none;
    border-radius: var(--radius);
    cursor: pointer;
    transition: var(--transition);
}

.btn-calculate:hover {
    transform: translateY(-1px);
    box-shadow: var(--shadow-lg);
}

/* Footer */
.footer {
    background: var(--gray-900);
    color: var(--gray-300);
    padding: var(--space-16) 0 var(--space-8);
}

.footer-content {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: var(--space-16);
    margin-bottom: var(--space-12);
}

.footer-brand .brand {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    font-size: 1.25rem;
    font-weight: 700;
    color: white;
    margin-bottom: var(--space-4);
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-8);
}

.link-group h4 {
    color: white;
    margin-bottom: var(--space-4);
    font-size: 1rem;
}

.link-group ul {
    list-style: none;
}

.link-group ul li {
    margin-bottom: var(--space-2);
}

.link-group ul li a {
    color: var(--gray-400);
    text-decoration: none;
    transition: var(--transition);
    font-size: 0.875rem;
}

.link-group ul li a:hover {
    color: white;
}

.footer-bottom {
    text-align: center;
    padding-top: var(--space-8);
    border-top: 1px solid var(--gray-700);
    color: var(--gray-500);
    font-size: 0.875rem;
}

/* Loading Screen */
.loading-screen {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(4px);
    z-index: 3000;
    display: none;
    align-items: center;
    justify-content: center;
}

.loading-screen.active {
    display: flex;
}

.loading-content {
    text-align: center;
}

.loading-spinner {
    width: 40px;
    height: 40px;
    border: 3px solid var(--gray-200);
    border-top: 3px solid var(--primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto var(--space-4);
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Responsive Design */
@media (max-width: 768px) {
    .hero-container {
        grid-template-columns: 1fr;
        gap: var(--space-8);
        text-align: center;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .nav-search {
        display: none;
    }
    
    .btn-menu {
        display: flex;
    }
    
    .categories-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: var(--space-8);
    }
    
    .footer-links {
        grid-template-columns: 1fr 1fr;
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
    
    .modal-content {
        width: 95%;
        margin: var(--space-4);
    }
}

@media (max-width: 480px) {
    .hero-stats {
        flex-direction: column;
        gap: var(--space-4);
    }
    
    .footer-links {
        grid-template-columns: 1fr;
    }
    
    .modal-header, .modal-body, .modal-footer {
        padding: var(--space-4);
    }
}

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

.animate-fade-in-up {
    animation: fadeInUp 0.6s ease-out;
}

/* Calculator Component Styles */
.calculator-header {
    margin-bottom: var(--space-6);
    padding-bottom: var(--space-4);
    border-bottom: 1px solid var(--gray-200);
}

.calculator-info {
    display: flex;
    gap: var(--space-3);
    margin-bottom: var(--space-3);
    flex-wrap: wrap;
}

.calculator-category,
.calculator-difficulty,
.calculator-time {
    padding: var(--space-1) var(--space-3);
    border-radius: var(--radius);
    font-size: 0.75rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.calculator-category {
    background: var(--primary);
    color: white;
}

.calculator-difficulty {
    background: var(--secondary);
    color: white;
}

.calculator-time {
    background: var(--gray-100);
    color: var(--text-secondary);
}

.calculator-description {
    color: var(--text-secondary);
    line-height: 1.5;
}

/* Examples Section */
.calculator-examples {
    margin-bottom: var(--space-6);
    padding: var(--space-4);
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
    border: 1px solid var(--gray-200);
}

.calculator-examples h5 {
    margin-bottom: var(--space-3);
    color: var(--text-primary);
    font-size: 1rem;
}

.examples-grid {
    display: flex;
    gap: var(--space-2);
    flex-wrap: wrap;
}

.example-btn {
    padding: var(--space-2) var(--space-4);
    background: var(--bg-primary);
    color: var(--text-accent);
    border: 1px solid var(--gray-300);
    border-radius: var(--radius);
    cursor: pointer;
    transition: var(--transition);
    font-size: 0.875rem;
}

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

/* Range Input Styles */
.range-container {
    margin: var(--space-2) 0;
}

.form-range {
    width: 100%;
    height: 6px;
    border-radius: 3px;
    background: var(--gray-200);
    outline: none;
    -webkit-appearance: none;
    appearance: none;
}

.form-range::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: var(--primary);
    cursor: pointer;
    border: 2px solid white;
    box-shadow: 0 2px 4px rgba(0,0,0,0.2);
}

.form-range::-moz-range-thumb {
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: var(--primary);
    cursor: pointer;
    border: 2px solid white;
    box-shadow: 0 2px 4px rgba(0,0,0,0.2);
}

.range-labels {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: var(--space-2);
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.range-labels span:nth-child(2) {
    font-weight: 600;
    color: var(--primary);
    background: var(--bg-secondary);
    padding: var(--space-1) var(--space-2);
    border-radius: var(--radius);
    border: 1px solid var(--gray-200);
}

/* Form Enhancements */
.form-help {
    display: block;
    margin-top: var(--space-1);
    font-size: 0.75rem;
    color: var(--text-secondary);
    font-style: italic;
}

.required {
    color: var(--danger);
    margin-left: var(--space-1);
}

/* Educational Content */
.educational-content {
    margin-top: var(--space-6);
    padding: var(--space-6);
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
    border: 1px solid var(--gray-200);
}

.educational-content h5 {
    margin-bottom: var(--space-4);
    color: var(--text-primary);
    font-size: 1.125rem;
}

.educational-content h6 {
    margin: var(--space-4) 0 var(--space-2);
    color: var(--text-primary);
    font-size: 1rem;
}

.concepts-grid {
    display: grid;
    gap: var(--space-3);
    margin-bottom: var(--space-4);
}

.concept-item {
    padding: var(--space-3);
    background: var(--bg-primary);
    border-radius: var(--radius);
    border: 1px solid var(--gray-200);
}

.concept-item strong {
    color: var(--primary);
    display: block;
    margin-bottom: var(--space-1);
}

.tips-section ul {
    margin: 0;
    padding-left: var(--space-5);
    list-style-type: disc;
}

.tips-section li {
    margin-bottom: var(--space-2);
    color: var(--text-secondary);
    line-height: 1.4;
}



/* Error Message Enhancements */
.error-message {
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid var(--danger);
    border-radius: var(--radius);
    margin: var(--space-4) 0;
}

.error-message i {
    margin-right: var(--space-2);
    font-size: 1.125rem;
}

/* Success Message */
.success-message {
    background: rgba(16, 185, 129, 0.1);
    border: 1px solid var(--success);
    color: var(--success);
    border-radius: var(--radius);
    padding: var(--space-4);
    margin: var(--space-4) 0;
    text-align: center;
}

/* Loading Enhancements */
.loading-content p {
    margin-top: var(--space-4);
    color: var(--text-secondary);
    font-weight: 500;
}

/* No Results Message */
.no-results {
    text-align: center;
    padding: var(--space-16);
    color: var(--text-secondary);
}

.no-results h3 {
    margin: var(--space-4) 0;
    color: var(--text-primary);
}

.no-results p {
    max-width: 400px;
    margin: 0 auto;
}

/* Featured Calculator Tags */
.calculator-tag {
    display: inline-block;
    background: linear-gradient(135deg, var(--primary), var(--primary-light));
    color: white;
    padding: var(--space-2) var(--space-4);
    border-radius: var(--radius-lg);
    font-size: 0.875rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    text-decoration: none;
    border: none;
    box-shadow: var(--shadow-sm);
}

.calculator-tag:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
    background: linear-gradient(135deg, var(--primary-dark), var(--primary));
}

.calculator-tag:active {
    transform: translateY(0);
}

/* Coming soon calculator tags */
.calculator-tag-coming {
    display: inline-block;
    padding: var(--space-2) var(--space-4);
    background: linear-gradient(135deg, var(--gray-300), var(--gray-400));
    color: var(--text-secondary);
    border-radius: var(--radius-lg);
    font-size: 0.875rem;
    font-weight: 600;
    cursor: default;
    opacity: 0.7;
    border: 2px dashed var(--gray-300);
    text-decoration: none;
    position: relative;
    overflow: hidden;
    transition: var(--transition);
}

.calculator-tag-coming::after {
    content: "Em breve";
    position: absolute;
    top: -3px;
    right: -8px;
    background: var(--warning);
    color: white;
    font-size: 0.6rem;
    padding: 2px 6px;
    border-radius: 8px;
    font-weight: 700;
    box-shadow: var(--shadow-sm);
}

.calculator-tag-coming:hover {
    opacity: 0.9;
    transform: scale(1.02);
}

/* SEO Enhancement for Hero Section */
.hero-description strong {
    color: var(--primary);
    font-weight: 700;
}

.hero-description em {
    color: var(--secondary);
    font-style: normal;
    font-weight: 600;
}