/* Reset and base styles */
:root {
    --primary-color: #3498db;
    --secondary-color: #2c3e50;
    --accent-color: #e74c3c;
    --light-color: #ecf0f1;
    --dark-color: #34495e;
    --calculator-bg: #ffffff;
    --button-bg: #f8f9fa;
    --button-hover: #e9ecef;
    --button-active: #dee2e6;
    --border-color: #dee2e6;
    --shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

body {
    background-color: #f5f7fa;
    color: #333;
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Header styles */
header {
    background: linear-gradient(135deg, var(--secondary-color) 0%, var(--dark-color) 100%);
    color: white;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.header-top {
    padding: 15px 5%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 20px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
}

.logo a {
    display: flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
    color: white;
}

.logo h1 {
    font-size: 1.5rem;
    font-weight: bold;
}

.logo i {
    font-size: 1.8rem;
    color: var(--primary-color);
}

nav {
    background-color: rgba(0, 0, 0, 0.15);
    backdrop-filter: blur(5px);
    padding: 0 5%;
}

nav ul {
    display: flex;
    list-style: none;
    flex-wrap: wrap;
    justify-content: center;
}

nav ul li {
    padding: 0;
}

nav ul li a {
    display: flex;
    align-items: center;
    gap: 8px;
    color: rgba(255, 255, 255, 0.9);
    text-decoration: none;
    padding: 15px 25px;
    font-size: 1rem;
    transition: all 0.3s ease;
    position: relative;
}

nav ul li a:hover, 
nav ul li a.active {
    color: white;
    background: rgba(0, 0, 0, 0.2);
}

nav ul li a.active::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 15px;
    right: 15px;
    height: 3px;
    background: var(--primary-color);
}

nav ul li a i {
    font-size: 0.9em;
}

/* Search container */
.search-container {
    padding: 20px 5%;
    background: var(--light-color);
    display: flex;
    flex-direction: column;
    align-items: center;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
}

.search-bar {
    display: flex;
    width: 100%;
    max-width: 600px;
    background: white;
    border-radius: 30px;
    overflow: hidden;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
}

.search-bar:hover {
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.15);
}

.search-bar input {
    padding: 14px 25px;
    border: none;
    background: transparent;
    width: 100%;
    font-size: 1.1rem;
    color: var(--dark-color);
}

.search-bar input::placeholder {
    color: rgba(0, 0, 0, 0.4);
}

.search-bar button {
    padding: 0 25px;
    background: var(--primary-color);
    color: white;
    border: none;
    cursor: pointer;
    font-size: 1.2rem;
    transition: all 0.3s ease;
}

.search-bar button:hover {
    background: #2980b9;
}

.search-results {
    margin-top: 20px;
    width: 100%;
    max-width: 600px;
    background: white;
    border-radius: 8px;
    box-shadow: var(--shadow);
    display: none;
}

.search-results h3 {
    padding: 15px 20px;
    background: var(--secondary-color);
    color: white;
    border-radius: 8px 8px 0 0;
}

#results-list {
    list-style: none;
    padding: 15px 20px;
}

#results-list li {
    padding: 12px 0;
    border-bottom: 1px solid var(--border-color);
}

#results-list li:last-child {
    border-bottom: none;
}

#results-list a {
    display: flex;
    align-items: center;
    gap: 12px;
    color: var(--primary-color);
    text-decoration: none;
    transition: all 0.2s ease;
    font-weight: 500;
}

#results-list a:hover {
    color: #2980b9;
    transform: translateX(5px);
}

#results-list i {
    color: var(--primary-color);
    width: 25px;
    text-align: center;
}

.category-tag {
    background: #e3f2fd;
    color: #1976d2;
    padding: 2px 8px;
    border-radius: 12px;
    font-size: 0.85rem;
    margin-left: 8px;
}

.no-results {
    color: var(--accent-color);
    font-style: italic;
    padding: 15px 0;
    text-align: center;
}

/* Main content styles */
main {
    padding: 30px 5%;
    max-width: 1400px;
    margin: 0 auto;
    flex: 1;
}

.page-title {
    margin-bottom: 25px;
    padding-bottom: 15px;
    border-bottom: 2px solid var(--primary-color);
    display: flex;
    align-items: center;
    gap: 12px;
    color: var(--secondary-color);
    font-size: 1.8rem;
}

/* Calculator styles (for index.html) */
.calculator-section {
    margin-bottom: 40px;
}

.calculator-container {
    background: var(--calculator-bg);
    border-radius: 12px;
    box-shadow: var(--shadow);
    overflow: hidden;
    max-width: 700px;
    margin: 0 auto;
}

.calculator-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 20px;
    background: var(--secondary-color);
    color: white;
}

.calculator-header h2 {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.4rem;
}

.calc-mode {
    display: flex;
    gap: 8px;
}

.calc-mode button {
    padding: 6px 15px;
    background: rgba(255, 255, 255, 0.15);
    color: white;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.calc-mode button.active {
    background: var(--primary-color);
    font-weight: bold;
}

.calculator {
    padding: 20px;
}

.calc-display input {
    width: 100%;
    padding: 18px 15px;
    font-size: 2.2rem;
    text-align: right;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    margin-bottom: 20px;
    background: #f8f9fa;
    box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.05);
    font-family: 'Courier New', monospace;
    font-weight: bold;
}

/* Calculator buttons grid */
.calc-buttons {
    display: grid;
    grid-template-columns: repeat(10, 1fr);
    gap: 8px;
}

.calc-buttons button {
    padding: 14px 0;
    font-size: 15px;
    min-height: 55px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    background: var(--button-bg);
    cursor: pointer;
    transition: all 0.2s ease;
    font-weight: 500;
    position: relative;
    overflow: hidden;
}

.calc-buttons button:hover {
    background: var(--button-hover);
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.08);
}

.calc-buttons button:active {
    background: var(--button-active);
    transform: translateY(0);
    box-shadow: none;
}

.calc-buttons button sup,
.calc-buttons button sub {
    font-size: 0.7em;
    line-height: 1;
    position: relative;
}

/* Button types */
.calc-buttons button.op-btn {
    background: #e9ecef;
    font-weight: bold;
}

.calc-buttons button.func-btn {
    background: #e3f2fd;
    font-size: 14px;
}

.calc-buttons button.const-btn {
    background: #f3e5f5;
    font-weight: bold;
}

.calc-buttons button.mem-btn {
    background: #fff8e1;
    font-size: 14px;
}

.calc-buttons button.ctrl-btn {
    background: #ffebee;
    font-size: 14px;
}

.calc-buttons button.ac-btn {
    background: var(--accent-color);
    color: white;
    font-weight: bold;
}

.calc-buttons button[data-value="="] {
    background: var(--primary-color);
    color: white;
    font-weight: bold;
    font-size: 1.2rem;
}

.double {
    grid-column: span 2;
}

/* Categories section */
.categories-section {
    margin-top: 40px;
}

.categories-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 25px;
}

.category-card {
    background: white;
    border-radius: 12px;
    box-shadow: var(--shadow);
    overflow: hidden;
    transition: transform 0.3s ease;
}

.category-card:hover {
    transform: translateY(-5px);
}

.category-header {
    display: flex;
    align-items: center;
    gap: 15px;
    padding: 20px;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    color: white;
}

.category-header i {
    font-size: 1.8rem;
    background: rgba(255, 255, 255, 0.2);
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
}

.category-card ul {
    list-style: none;
    padding: 15px 0;
}

.category-card ul li {
    padding: 10px 20px;
    transition: all 0.2s ease;
}

.category-card ul li:hover {
    background: #f8f9fa;
}

.category-card ul li a {
    display: flex;
    align-items: center;
    gap: 12px;
    color: var(--dark-color);
    text-decoration: none;
    transition: all 0.2s ease;
    font-weight: 500;
}

.category-card ul li a:hover {
    color: var(--primary-color);
    transform: translateX(5px);
}

.category-card ul li a i {
    color: var(--primary-color);
    width: 20px;
    text-align: center;
}

/* Calculator form styles (for mortgage, BMI, etc.) */
.calculator-form {
    background: white;
    border-radius: 12px;
    box-shadow: var(--shadow);
    padding: 30px;
    margin-bottom: 30px;
}

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

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    color: var(--dark-color);
}

.form-group input,
.form-group select {
    width: 100%;
    padding: 14px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    font-size: 1rem;
    transition: all 0.3s ease;
}

.form-group input:focus,
.form-group select:focus {
    border-color: var(--primary-color);
    outline: none;
    box-shadow: 0 0 0 3px rgba(52, 152, 219, 0.2);
}

.calculate-btn {
    background: var(--primary-color);
    color: white;
    border: none;
    padding: 14px 25px;
    font-size: 1.1rem;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s ease;
    display: block;
    width: 100%;
    font-weight: bold;
    margin-top: 20px;
}

.calculate-btn:hover {
    background: #2980b9;
}

.result-container {
    background: white;
    border-radius: 12px;
    box-shadow: var(--shadow);
    padding: 25px;
    margin-top: 20px;
}

.result-container h2 {
    color: var(--secondary-color);
    margin-bottom: 20px;
    padding-bottom: 15px;
    border-bottom: 2px solid var(--primary-color);
}

.result-item {
    display: flex;
    justify-content: space-between;
    padding: 12px 0;
    border-bottom: 1px solid var(--border-color);
    font-size: 1.1rem;
}

.result-item:last-child {
    border-bottom: none;
}

.result-item span:first-child {
    font-weight: 500;
}

/* Content styles for about, privacy, etc. */
.content-container {
    background: white;
    border-radius: 12px;
    box-shadow: var(--shadow);
    padding: 40px;
    margin-bottom: 30px;
}

.content-container h2 {
    color: var(--secondary-color);
    margin-bottom: 20px;
    padding-bottom: 15px;
    border-bottom: 2px solid var(--primary-color);
}

.content-container p {
    margin-bottom: 15px;
    line-height: 1.7;
}

.content-container ul {
    margin-left: 30px;
    margin-bottom: 20px;
}

.content-container li {
    margin-bottom: 10px;
}

/* Footer styles */
footer {
    background: var(--secondary-color);
    color: var(--light-color);
    padding: 40px 5% 20px;
    margin-top: auto;
}

.footer-content {
    max-width: 1400px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 40px;
}

.footer-links {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.footer-links a {
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--light-color);
    text-decoration: none;
    transition: all 0.2s ease;
}

.footer-links a:hover {
    color: var(--primary-color);
    transform: translateX(5px);
}

.footer-info p {
    margin-bottom: 15px;
    line-height: 1.7;
    color: rgba(255, 255, 255, 0.8);
}

.copyright {
    margin-top: 20px;
    padding-top: 20px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.6);
}

/* Responsive styles */
@media (max-width: 1100px) {
    .calc-buttons {
        grid-template-columns: repeat(5, 1fr);
    }
}

@media (max-width: 900px) {
    .footer-content {
        grid-template-columns: 1fr;
        gap: 30px;
    }
    
    .header-top {
        flex-direction: column;
        align-items: center;
        text-align: center;
    }
    
    .search-bar {
        max-width: 100%;
    }
}

@media (max-width: 768px) {
    nav ul {
        flex-direction: column;
        align-items: center;
    }
    
    .categories-grid {
        grid-template-columns: 1fr;
    }
    
    .page-title {
        font-size: 1.5rem;
    }
    
    .calculator-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 15px;
    }
    
    .calc-buttons button {
        min-height: 45px;
        padding: 10px 0;
        font-size: 14px;
    }

    .logo h1 {
        font-size: 1.3rem;
    }
    
    .content-container {
        padding: 25px;
    }
}

@media (max-width: 480px) {
    .calc-buttons {
        grid-template-columns: repeat(4, 1fr);
    }
    
    .calc-display input {
        font-size: 1.8rem;
        padding: 15px 10px;
    }
    
    .category-header {
        flex-direction: column;
        text-align: center;
    }
    
    .category-header i {
        margin-bottom: 10px;
    }
    
    .footer-links {
        flex-direction: row;
        flex-wrap: wrap;
        gap: 20px;
    }

    .logo h1 {
        font-size: 1.2rem;
    }

    .calc-buttons button {
        min-height: 40px;
        font-size: 13px;
    }
    
    .search-bar input {
        padding: 12px 20px;
    }
    
    .search-bar button {
        padding: 0 20px;
    }
}

@media (max-width: 360px) {
    .logo h1 {
        font-size: 1.1rem;
    }

    .calc-buttons button {
        min-height: 38px;
        font-size: 12px;
    }
}

/* Add to style.css */
.sitemap-category {
    margin-bottom: 30px;
    padding-bottom: 20px;
    border-bottom: 1px solid var(--border-color);
}

.sitemap-category:last-child {
    border-bottom: none;
}

.sitemap-category h2 {
    color: var(--secondary-color);
    margin-bottom: 15px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.sitemap-category ul {
    list-style: none;
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: 10px;
}

.sitemap-category li {
    padding: 8px 0;
}

.sitemap-category a {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--primary-color);
    text-decoration: none;
    transition: all 0.2s ease;
}

.sitemap-category a:hover {
    color: var(--secondary-color);
    transform: translateX(5px);
}

.sitemap-category a i {
    color: var(--primary-color);
    width: 20px;
    text-align: center;
}
/* Mobile Menu Button */
.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    color: white;
    font-size: 1.5rem;
    cursor: pointer;
}

/* Mobile Navigation */
.mobile-nav {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(44, 62, 80, 0.95);
    z-index: 200;
    padding: 2rem;
    overflow-y: auto;
}

.mobile-nav.active {
    display: block;
}

.mobile-nav-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.mobile-nav-links {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
}

.mobile-nav-links a {
    display: block;
    padding: 1rem;
    background-color: rgba(255, 255, 255, 0.1);
    color: white;
    text-decoration: none;
    border-radius: 5px;
    transition: all 0.3s ease;
    text-align: center;
}

.mobile-nav-links a:hover {
    background-color: var(--primary-color);
}

.close-mobile-menu {
    background: none;
    border: none;
    color: white;
    font-size: 1.5rem;
    cursor: pointer;
}

/* Hide desktop nav on mobile */
@media (max-width: 900px) {
    .desktop-nav {
        display: none;
    }
    
    .mobile-menu-btn {
        display: block;
    }
    
    .mobile-nav-links {
        grid-template-columns: 1fr;
    }
}
.welcome-message {
    background: white;
    border-radius: 12px;
    box-shadow: var(--shadow);
    padding: 25px;
    margin-bottom: 30px;
    text-align: center;
    font-size: 1.1rem;
    line-height: 1.7;
}