/* =========================
   BTTOP.NET - Global Styles
   Modern Minimalist Design
   ========================= */

/* Import Google Fonts */
@import url('https://fonts.googleapis.com/css2?family=Roboto:wght@300;400;500;700&family=Open+Sans:wght@400;600;700&display=swap');

/* CSS Variables for Theme */
:root {
    --primary-blue: #4A90E2;
    --dark-blue: #2C5F8D;
    --light-blue: #E8F4FD;
    --white: #FFFFFF;
    --light-gray: #F5F7FA;
    --gray: #8B95A5;
    --dark-gray: #4A5568;
    --text-dark: #2D3748;
    --border-color: #E2E8F0;
    --success-green: #48BB78;
    --accent-color: #5B9FDB;
    
    --font-body: 'Roboto', sans-serif;
    --font-heading: 'Open Sans', sans-serif;
    
    --transition: all 0.3s ease;
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.07);
    --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 40px rgba(0, 0, 0, 0.12);
}

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

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

body {
    font-family: var(--font-body);
    color: var(--text-dark);
    background-color: var(--white);
    line-height: 1.6;
    overflow-x: hidden;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 1rem;
    color: var(--dark-blue);
}

h1 { font-size: 2.5rem; }
h2 { font-size: 2rem; }
h3 { font-size: 1.75rem; }
h4 { font-size: 1.5rem; }
h5 { font-size: 1.25rem; }
h6 { font-size: 1rem; }

p {
    margin-bottom: 1rem;
    color: var(--dark-gray);
    font-size: 1rem;
}

a {
    color: var(--primary-blue);
    text-decoration: none;
    transition: var(--transition);
}

a:hover {
    color: var(--dark-blue);
}

/* Header and Navigation */
header {
    background-color: var(--white);
    box-shadow: var(--shadow-md);
    position: sticky;
    top: 0;
    z-index: 1000;
    padding: 0;
}

.header-container {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.25rem 2rem;
}

.logo {
    font-family: var(--font-heading);
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--primary-blue);
    text-decoration: none;
    transition: var(--transition);
}

.logo:hover {
    color: var(--dark-blue);
    transform: translateY(-2px);
}

nav ul {
    display: flex;
    list-style: none;
    gap: 2rem;
    align-items: center;
}

nav ul li a {
    font-weight: 500;
    color: var(--dark-gray);
    padding: 0.5rem 1rem;
    border-radius: 6px;
    transition: var(--transition);
    font-size: 0.95rem;
}

nav ul li a:hover,
nav ul li a.active {
    color: var(--primary-blue);
    background-color: var(--light-blue);
}

/* Language Switcher */
.language-switcher {
    position: relative;
}

.lang-btn {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    background: none;
    border: 2px solid var(--primary-blue);
    border-radius: 6px;
    color: var(--primary-blue);
    font-weight: 600;
    font-size: 0.9rem;
    cursor: pointer;
    transition: var(--transition);
    font-family: var(--font-body);
}

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

.lang-icon {
    font-size: 1.1rem;
}

.lang-text {
    font-weight: 600;
}

.lang-dropdown {
    position: absolute;
    top: calc(100% + 0.5rem);
    right: 0;
    background-color: var(--white);
    border-radius: 8px;
    box-shadow: var(--shadow-lg);
    padding: 0.5rem 0;
    min-width: 180px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: var(--transition);
    z-index: 1000;
}

.language-switcher.active .lang-dropdown {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.lang-option {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    width: 100%;
    padding: 0.75rem 1rem;
    background: none;
    border: none;
    text-align: left;
    cursor: pointer;
    transition: var(--transition);
    font-family: var(--font-body);
    font-size: 0.95rem;
    color: var(--dark-gray);
}

.lang-option:hover {
    background-color: var(--light-blue);
    color: var(--primary-blue);
}

.lang-option.current {
    background-color: var(--light-blue);
    color: var(--primary-blue);
    font-weight: 600;
}

.lang-option .flag {
    font-size: 1.25rem;
}

/* Mobile Menu Toggle */
.mobile-menu-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 1.75rem;
    color: var(--primary-blue);
    cursor: pointer;
    transition: var(--transition);
}

.mobile-menu-toggle:hover {
    color: var(--dark-blue);
}

/* Container and Layout */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

.section {
    padding: 5rem 0;
}

.section-title {
    text-align: center;
    margin-bottom: 3rem;
    position: relative;
}

.section-title::after {
    content: '';
    display: block;
    width: 60px;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-blue), var(--accent-color));
    margin: 1rem auto 0;
    border-radius: 2px;
}

/* Hero Section */
.hero {
    background: linear-gradient(135deg, var(--light-blue) 0%, var(--white) 100%);
    padding: 6rem 0;
    text-align: center;
}

.hero h1 {
    font-size: 3rem;
    margin-bottom: 1.5rem;
    color: var(--dark-blue);
}

.hero p {
    font-size: 1.25rem;
    color: var(--dark-gray);
    margin-bottom: 2rem;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 0.875rem 2rem;
    border-radius: 8px;
    font-weight: 600;
    font-size: 1rem;
    text-align: center;
    cursor: pointer;
    transition: var(--transition);
    border: none;
    font-family: var(--font-body);
    text-decoration: none;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-blue), var(--accent-color));
    color: var(--white);
    box-shadow: var(--shadow-md);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
    color: var(--white);
}

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

.btn-secondary:hover {
    background-color: var(--primary-blue);
    color: var(--white);
    transform: translateY(-3px);
}

.btn-group {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

/* Cards */
.cards-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.card {
    background-color: var(--white);
    border-radius: 12px;
    padding: 2rem;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    border: 1px solid var(--border-color);
}

.card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
}

.card-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--primary-blue), var(--accent-color));
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
    color: var(--white);
    font-size: 1.75rem;
}

.card h3 {
    margin-bottom: 1rem;
    color: var(--dark-blue);
}

.card p {
    color: var(--dark-gray);
    line-height: 1.7;
}

/* Forms */
.contact-form {
    max-width: 600px;
    margin: 0 auto;
    background-color: var(--white);
    padding: 3rem;
    border-radius: 12px;
    box-shadow: var(--shadow-lg);
}

.contact-form h1 {
    text-align: center;
    margin-bottom: 2rem;
    color: var(--dark-blue);
}

.contact-form label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 600;
    color: var(--dark-gray);
    font-size: 0.95rem;
}

.contact-form input,
.contact-form textarea {
    width: 100%;
    padding: 0.875rem;
    margin-bottom: 1.5rem;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    font-family: var(--font-body);
    font-size: 1rem;
    transition: var(--transition);
    background-color: var(--light-gray);
}

.contact-form input:focus,
.contact-form textarea:focus {
    outline: none;
    border-color: var(--primary-blue);
    background-color: var(--white);
    box-shadow: 0 0 0 3px rgba(74, 144, 226, 0.1);
}

.contact-form textarea {
    min-height: 150px;
    resize: vertical;
}

.contact-form button {
    width: 100%;
    padding: 1rem;
    background: linear-gradient(135deg, var(--primary-blue), var(--accent-color));
    color: var(--white);
    border: none;
    border-radius: 8px;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    box-shadow: var(--shadow-md);
}

.contact-form button:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
}

/* Footer */
footer {
    background: linear-gradient(135deg, var(--dark-blue), var(--primary-blue));
    color: var(--white);
    padding: 4rem 0 2rem;
    margin-top: 5rem;
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 3rem;
    margin-bottom: 3rem;
}

.footer-section h3 {
    color: var(--white);
    margin-bottom: 1.5rem;
    font-size: 1.25rem;
}

.footer-section p,
.footer-section a {
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: 0.75rem;
    line-height: 1.8;
}

.footer-section a:hover {
    color: var(--white);
    text-decoration: underline;
}

.footer-links {
    list-style: none;
}

.footer-links li {
    margin-bottom: 0.75rem;
}

.footer-links a {
    color: rgba(255, 255, 255, 0.9);
    transition: var(--transition);
}

.footer-links a:hover {
    color: var(--white);
    padding-left: 5px;
}

.footer-contact p {
    margin-bottom: 1rem;
}

.footer-contact a {
    color: var(--white);
    text-decoration: underline;
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.2);
    color: rgba(255, 255, 255, 0.8);
}

/* Cookie Banner */
.cookie-banner {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background-color: var(--dark-blue);
    color: var(--white);
    padding: 1.25rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: var(--shadow-xl);
    z-index: 9999;
    animation: slideUp 0.5s ease;
}

@keyframes slideUp {
    from {
        transform: translateY(100%);
    }
    to {
        transform: translateY(0);
    }
}

.cookie-banner p {
    margin: 0;
    color: var(--white);
    flex: 1;
}

.cookie-banner button {
    background-color: var(--white);
    color: var(--primary-blue);
    border: none;
    padding: 0.625rem 1.5rem;
    border-radius: 6px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    margin-left: 1rem;
}

.cookie-banner button:hover {
    background-color: var(--light-blue);
    transform: scale(1.05);
}

/* Content Sections */
.content-section {
    background-color: var(--light-gray);
    padding: 4rem 0;
}

.content-section:nth-child(even) {
    background-color: var(--white);
}

.text-content {
    max-width: 800px;
    margin: 0 auto;
    line-height: 1.8;
}

.text-content h2 {
    margin-top: 2.5rem;
    margin-bottom: 1.5rem;
}

.text-content ul,
.text-content ol {
    margin-left: 2rem;
    margin-bottom: 1.5rem;
}

.text-content li {
    margin-bottom: 0.75rem;
    color: var(--dark-gray);
}

/* Feature List */
.feature-list {
    list-style: none;
    margin-left: 0;
}

.feature-list li {
    padding-left: 2rem;
    position: relative;
    margin-bottom: 1rem;
}

.feature-list li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--success-green);
    font-weight: 700;
    font-size: 1.25rem;
}

/* Blog Grid */
.blog-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 2.5rem;
    margin-top: 3rem;
}

.blog-card {
    background-color: var(--white);
    border-radius: 12px;
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    border: 1px solid var(--border-color);
}

.blog-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
}

.blog-card-image {
    width: 100%;
    height: 200px;
    background: linear-gradient(135deg, var(--primary-blue), var(--accent-color));
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    font-size: 3rem;
}

.blog-card-content {
    padding: 2rem;
}

.blog-card-meta {
    color: var(--gray);
    font-size: 0.875rem;
    margin-bottom: 1rem;
}

.blog-card h3 {
    margin-bottom: 1rem;
    color: var(--dark-blue);
}

.blog-card p {
    color: var(--dark-gray);
    margin-bottom: 1.5rem;
}

.read-more {
    color: var(--primary-blue);
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    transition: var(--transition);
}

.read-more:hover {
    gap: 0.75rem;
}

/* Team Grid */
.team-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 3rem;
    margin-top: 3rem;
}

.team-member {
    text-align: center;
    padding: 2rem;
    background-color: var(--white);
    border-radius: 12px;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

.team-member:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.team-member-photo {
    width: 120px;
    height: 120px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary-blue), var(--accent-color));
    margin: 0 auto 1.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    font-size: 2.5rem;
    font-weight: 700;
}

.team-member h3 {
    margin-bottom: 0.5rem;
    color: var(--dark-blue);
}

.team-member-role {
    color: var(--primary-blue);
    font-weight: 600;
    margin-bottom: 1rem;
}

.team-member p {
    color: var(--dark-gray);
    font-size: 0.95rem;
}

/* Map Container */
.map-container {
    margin-top: 3rem;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

.map-container iframe {
    width: 100%;
    height: 450px;
    border: 0;
}

/* Mobile Language Switcher */
@media (max-width: 768px) {
    .lang-dropdown {
        right: auto;
        left: 50%;
        transform: translateX(-50%) translateY(-10px);
    }
    
    .language-switcher.active .lang-dropdown {
        transform: translateX(-50%) translateY(0);
    }
    
    .lang-btn {
        padding: 0.625rem 1rem;
        font-size: 0.85rem;
    }
}

/* Responsive Design */
@media (max-width: 768px) {
    h1 { font-size: 2rem; }
    h2 { font-size: 1.5rem; }
    h3 { font-size: 1.25rem; }
    
    .header-container {
        padding: 1rem;
    }
    
    nav {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background-color: var(--white);
        box-shadow: var(--shadow-lg);
        padding: 1rem 0;
    }
    
    nav.active {
        display: block;
    }
    
    nav ul {
        flex-direction: column;
        gap: 0;
    }
    
    nav ul li {
        width: 100%;
    }
    
    nav ul li a {
        display: block;
        padding: 1rem 2rem;
        border-radius: 0;
    }
    
    .mobile-menu-toggle {
        display: block;
    }
    
    .hero {
        padding: 4rem 0;
    }
    
    .hero h1 {
        font-size: 2rem;
    }
    
    .hero p {
        font-size: 1.1rem;
    }
    
    .section {
        padding: 3rem 0;
    }
    
    .container {
        padding: 0 1rem;
    }
    
    .cards-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    
    .contact-form {
        padding: 2rem 1.5rem;
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .cookie-banner {
        flex-direction: column;
        gap: 1rem;
        text-align: center;
    }
    
    .cookie-banner button {
        margin-left: 0;
        width: 100%;
    }
    
    .btn-group {
        flex-direction: column;
        align-items: stretch;
    }
    
    .btn {
        width: 100%;
    }
}

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

.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 2rem; }
.mt-4 { margin-top: 3rem; }

.mb-1 { margin-bottom: 0.5rem; }
.mb-2 { margin-bottom: 1rem; }
.mb-3 { margin-bottom: 2rem; }
.mb-4 { margin-bottom: 3rem; }

.bg-light { background-color: var(--light-gray); }
.bg-blue-light { background-color: var(--light-blue); }