/* 
 * Sağlıklı Yaşam Web Sitesi
 * Modern ve Profesyonel Tasarım
 */

:root {
    --primary-color: #2ecc71;
    --secondary-color: #27ae60;
    --accent-color: #e74c3c;
    --dark-color: #2c3e50;
    --light-color: #ecf0f1;
    --text-color: #333;
    --gray-color: #7f8c8d;
    --white: #ffffff;
    --shadow: 0 2px 15px rgba(0,0,0,0.1);
    --transition: all 0.3s ease;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Poppins', sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background-color: #f8f9fa;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Header Styles */
.header {
    background: var(--white);
    box-shadow: var(--shadow);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.top-bar {
    background: var(--dark-color);
    color: var(--white);
    padding: 10px 0;
    font-size: 14px;
}

.top-bar-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.contact-info i {
    margin-right: 5px;
    color: var(--primary-color);
}

.separator {
    margin: 0 15px;
    color: var(--gray-color);
}

.social-links a {
    color: var(--white);
    margin-left: 15px;
    transition: var(--transition);
}

.social-links a:hover {
    color: var(--primary-color);
}

/* Navbar */
.navbar {
    padding: 15px 0;
}

.navbar-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    font-size: 28px;
    font-weight: 700;
    color: var(--primary-color);
    text-decoration: none;
    transition: var(--transition);
}

.logo i {
    margin-right: 10px;
    font-size: 32px;
}

.logo:hover {
    color: var(--secondary-color);
}

.mobile-menu-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 24px;
    color: var(--dark-color);
    cursor: pointer;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 30px;
    align-items: center;
}

.nav-menu li {
    position: relative;
}

.nav-menu > li > a {
    text-decoration: none;
    color: var(--dark-color);
    font-weight: 500;
    padding: 10px 15px;
    border-radius: 5px;
    transition: var(--transition);
    display: block;
}

.nav-menu > li > a:hover,
.nav-menu > li > a.active {
    background: var(--primary-color);
    color: var(--white);
}

/* Dropdown Menu */
.dropdown-menu {
    position: absolute;
    top: 100%;
    left: 0;
    background: var(--white);
    box-shadow: var(--shadow);
    list-style: none;
    padding: 10px 0;
    min-width: 220px;
    border-radius: 8px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: var(--transition);
}

.dropdown:hover .dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.dropdown-menu li a {
    display: block;
    padding: 10px 20px;
    color: var(--dark-color);
    text-decoration: none;
    transition: var(--transition);
}

.dropdown-menu li a:hover {
    background: var(--light-color);
    padding-left: 30px;
}

.search-icon {
    cursor: pointer;
    font-size: 20px;
    color: var(--dark-color);
    padding: 10px;
    transition: var(--transition);
}

.search-icon:hover {
    color: var(--primary-color);
}

/* Search Modal */
.search-modal {
    display: none;
    position: fixed;
    z-index: 2000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0,0,0,0.8);
}

.search-modal-content {
    background-color: var(--white);
    margin: 10% auto;
    padding: 40px;
    width: 90%;
    max-width: 600px;
    border-radius: 10px;
    position: relative;
}

.search-close {
    position: absolute;
    right: 20px;
    top: 20px;
    font-size: 35px;
    font-weight: bold;
    color: var(--gray-color);
    cursor: pointer;
}

.search-close:hover {
    color: var(--dark-color);
}

.search-form {
    display: flex;
    gap: 10px;
}

.search-form input {
    flex: 1;
    padding: 15px;
    border: 2px solid var(--light-color);
    border-radius: 8px;
    font-size: 16px;
}

.search-form button {
    padding: 15px 30px;
    background: var(--primary-color);
    color: var(--white);
    border: none;
    border-radius: 8px;
    cursor: pointer;
    font-weight: 600;
    transition: var(--transition);
}

.search-form button:hover {
    background: var(--secondary-color);
}

/* Main Content */
.main-content {
    min-height: calc(100vh - 400px);
    padding: 40px 0;
}

/* Hero Section */
.hero {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: var(--white);
    padding: 80px 0;
    text-align: center;
    border-radius: 15px;
    margin-bottom: 40px;
}

.hero h1 {
    font-size: 48px;
    margin-bottom: 20px;
    font-weight: 700;
}

.hero p {
    font-size: 20px;
    margin-bottom: 30px;
}

.btn {
    display: inline-block;
    padding: 15px 40px;
    background: var(--white);
    color: var(--primary-color);
    text-decoration: none;
    border-radius: 50px;
    font-weight: 600;
    transition: var(--transition);
    border: none;
    cursor: pointer;
}

.btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 20px rgba(0,0,0,0.2);
}

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

.btn-secondary {
    background: transparent;
    border: 2px solid var(--white);
    color: var(--white);
}

/* Section Styles */
.section {
    padding: 60px 0;
}

.section-title {
    text-align: center;
    margin-bottom: 50px;
}

.section-title h2 {
    font-size: 36px;
    color: var(--dark-color);
    margin-bottom: 10px;
    font-weight: 700;
}

.section-title p {
    color: var(--gray-color);
    font-size: 18px;
}

/* Card Grid */
.card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 30px;
    margin-bottom: 40px;
}

.card {
    background: var(--white);
    border-radius: 15px;
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 5px 30px rgba(0,0,0,0.15);
}

.card-image {
    width: 100%;
    height: 220px;
    object-fit: cover;
}

.card-content {
    padding: 25px;
}

.card-category {
    display: inline-block;
    padding: 5px 15px;
    background: var(--primary-color);
    color: var(--white);
    border-radius: 20px;
    font-size: 12px;
    margin-bottom: 15px;
}

.card-title {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 10px;
    color: var(--dark-color);
}

.card-description {
    color: var(--gray-color);
    font-size: 14px;
    line-height: 1.6;
    margin-bottom: 20px;
}

.card-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 20px;
    border-top: 1px solid var(--light-color);
    font-size: 13px;
    color: var(--gray-color);
}

/* Calculator Tool Styles */
.calculator-container {
    background: var(--white);
    padding: 40px;
    border-radius: 15px;
    box-shadow: var(--shadow);
    max-width: 800px;
    margin: 0 auto;
}

.form-group {
    margin-bottom: 25px;
}

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

.form-group input,
.form-group select {
    width: 100%;
    padding: 12px 15px;
    border: 2px solid var(--light-color);
    border-radius: 8px;
    font-size: 16px;
    transition: var(--transition);
}

.form-group input:focus,
.form-group select:focus {
    border-color: var(--primary-color);
    outline: none;
}

.form-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
}

.result-box {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: var(--white);
    padding: 30px;
    border-radius: 15px;
    text-align: center;
    margin-top: 30px;
}

.result-box h3 {
    font-size: 24px;
    margin-bottom: 15px;
}

.result-value {
    font-size: 48px;
    font-weight: 700;
    margin-bottom: 10px;
}

.result-text {
    font-size: 16px;
    opacity: 0.9;
}

/* Footer */
.footer {
    background: var(--dark-color);
    color: var(--white);
    padding: 60px 0 20px;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
    margin-bottom: 40px;
}

.footer-section h3,
.footer-section h4 {
    margin-bottom: 20px;
    color: var(--white);
}

.footer-section p {
    line-height: 1.8;
    color: var(--light-color);
    margin-bottom: 20px;
}

.footer-section ul {
    list-style: none;
}

.footer-section ul li {
    margin-bottom: 12px;
}

.footer-section ul li a {
    color: var(--light-color);
    text-decoration: none;
    transition: var(--transition);
}

.footer-section ul li a:hover {
    color: var(--primary-color);
    padding-left: 10px;
}

.contact-list li {
    display: flex;
    align-items: center;
    gap: 10px;
}

.contact-list i {
    color: var(--primary-color);
    width: 20px;
}

.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.1);
    padding-top: 30px;
}

.footer-bottom-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 20px;
}

.footer-links {
    display: flex;
    list-style: none;
    gap: 30px;
}

.footer-links a {
    color: var(--light-color);
    text-decoration: none;
    transition: var(--transition);
}

.footer-links a:hover {
    color: var(--primary-color);
}

/* Back to Top Button */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background: var(--primary-color);
    color: var(--white);
    border: none;
    border-radius: 50%;
    cursor: pointer;
    display: none;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    box-shadow: var(--shadow);
    transition: var(--transition);
    z-index: 999;
}

.back-to-top:hover {
    background: var(--secondary-color);
    transform: translateY(-5px);
}

.back-to-top.show {
    display: flex;
}

/* Utility Classes */
.text-center {
    text-align: center;
}

.mt-20 {
    margin-top: 20px;
}

.mt-40 {
    margin-top: 40px;
}

.mb-20 {
    margin-bottom: 20px;
}

.mb-40 {
    margin-bottom: 40px;
}

/* Alert Messages */
.alert {
    padding: 15px 20px;
    border-radius: 8px;
    margin-bottom: 20px;
}

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

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

.alert-info {
    background: #d1ecf1;
    color: #0c5460;
    border: 1px solid #bee5eb;
}

/* Loading Spinner */
.spinner {
    border: 3px solid var(--light-color);
    border-top: 3px solid var(--primary-color);
    border-radius: 50%;
    width: 40px;
    height: 40px;
    animation: spin 1s linear infinite;
    margin: 20px auto;
}

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

/* Breadcrumb */
.breadcrumb {
    padding: 20px 0;
    background: var(--white);
    margin-bottom: 30px;
    border-radius: 8px;
}

.breadcrumb ul {
    list-style: none;
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

.breadcrumb li::after {
    content: '/';
    margin-left: 10px;
    color: var(--gray-color);
}

.breadcrumb li:last-child::after {
    display: none;
}

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

.breadcrumb a:hover {
    text-decoration: underline;
}

/* Üyelik Sistemi Butonları */
.auth-buttons, .user-menu {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-left: 20px;
}

.btn-login, .btn-register, .user-link, .logout-link {
    padding: 8px 20px;
    border-radius: 25px;
    text-decoration: none;
    font-weight: 500;
    font-size: 14px;
    transition: all 0.3s;
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.btn-login {
    color: var(--primary-color);
    border: 2px solid var(--primary-color);
    background: transparent;
}

.btn-login:hover {
    background: var(--primary-color);
    color: #fff;
}

.btn-register {
    background: var(--primary-color);
    color: #fff;
    border: 2px solid var(--primary-color);
}

.btn-register:hover {
    background: var(--secondary-color);
    color: #fff;
    border-color: var(--secondary-color);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(46, 204, 113, 0.3);
}

.user-link {
    color: var(--dark-color);
    font-size: 14px;
    font-weight: 600;
}

.user-link:hover {
    color: var(--primary-color);
    transform: translateY(-2px);
}

.logout-link {
    color: var(--dark-color);
    font-size: 18px;
    padding: 8px 15px;
    background: transparent;
    border: 2px solid transparent;
    border-radius: 50%;
}

.logout-link:hover {
    color: #fff;
    background: var(--accent-color);
    border-color: var(--accent-color);
    transform: rotate(15deg) scale(1.1);
}