/* Mobile-First Responsive CSS */

/* Base Mobile Styles */
* {
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    line-height: 1.6;
    margin: 0;
    padding: 0;
    background-color: #f8f9fa;
    color: #333;
    font-size: 16px;
}

/* Container Responsive */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 15px;
    width: 100%;
}

/* Navigation Mobile-First */
.navigation {
    background: #2c3e50;
    padding: 0;
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    align-items: center;
    width: 100%;
}

.logo {
    width: 100%;
    text-align: center;
    border-bottom: 1px solid #34495e;
}

.logo a {
    color: white;
    text-decoration: none;
    font-size: 1.3em;
    font-weight: bold;
    padding: 15px;
    display: block;
}

.nav-menu {
    display: flex;
    flex-wrap: wrap;
    list-style: none;
    margin: 0;
    padding: 0;
    width: 100%;
    justify-content: center;
}

.nav-menu li {
    flex: 1;
    min-width: 80px;
}

.nav-menu a {
    display: block;
    color: white;
    padding: 15px 10px;
    text-decoration: none;
    text-align: center;
    font-size: 0.9em;
    transition: background 0.3s;
    border-right: 1px solid #34495e;
}

.nav-menu li:last-child a {
    border-right: none;
}

.nav-menu a:hover {
    background: #34495e;
}

/* Hero Section Mobile */
.hero {
    background: linear-gradient(135deg, #2c3e50 0%, #34495e 100%);
    color: white;
    padding: 40px 20px;
    text-align: center;
    margin-bottom: 20px;
}

.hero h1 {
    font-size: 1.8em;
    margin-bottom: 15px;
    line-height: 1.2;
}

.hero p {
    font-size: 1em;
    margin-bottom: 20px;
}

/* Content Mobile */
.content {
    background: white;
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    margin-bottom: 20px;
}

.content h2 {
    font-size: 1.4em;
    margin-bottom: 15px;
    color: #2c3e50;
}

.content h3 {
    font-size: 1.2em;
    margin-bottom: 10px;
    color: #34495e;
}

/* Grid System Mobile-First */
.grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 20px;
    margin: 20px 0;
}

/* Cards Mobile */
.card {
    background: white;
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    transition: transform 0.3s;
}

.card:hover {
    transform: translateY(-2px);
}

.card h3, .card h4 {
    color: #2c3e50;
    margin-bottom: 10px;
    font-size: 1.1em;
}

/* Buttons Mobile */
.btn {
    display: inline-block;
    background: #e74c3c;
    color: white;
    padding: 12px 20px;
    text-decoration: none;
    border-radius: 5px;
    font-weight: bold;
    text-align: center;
    font-size: 0.9em;
    transition: background 0.3s;
    width: 100%;
    max-width: 200px;
    margin-top: 10px;
}

.btn:hover {
    background: #c0392b;
}

/* Lists Mobile */
ul, ol {
    padding-left: 20px;
}

li {
    margin-bottom: 5px;
}

/* Images Mobile */
img {
    max-width: 100%;
    height: auto;
    border-radius: 5px;
}

/* Footer Mobile */
.footer {
    background: #2c3e50;
    color: white;
    padding: 30px 0;
    text-align: center;
    margin-top: 40px;
}

.footer .grid {
    grid-template-columns: 1fr;
    gap: 20px;
    text-align: left;
}

.footer h4 {
    color: white;
    margin-bottom: 10px;
    font-size: 1.1em;
}

.footer a {
    color: #3498db;
    text-decoration: none;
}

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

/* Tables Mobile */
table {
    width: 100%;
    overflow-x: auto;
    display: block;
    white-space: nowrap;
}

/* Forms Mobile */
input, textarea, select {
    width: 100%;
    padding: 12px;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 16px;
    margin-bottom: 15px;
}

/* Tablet Styles */
@media (min-width: 768px) {
    .container {
        padding: 20px;
    }
    
    .nav-container {
        flex-direction: row;
        justify-content: space-between;
        align-items: center;
    }
    
    .logo {
        width: auto;
        border-bottom: none;
    }
    
    .logo a {
        font-size: 1.5em;
        padding: 15px 0;
    }
    
    .nav-menu {
        width: auto;
        flex-wrap: nowrap;
    }
    
    .nav-menu li {
        flex: none;
        min-width: auto;
    }
    
    .nav-menu a {
        padding: 20px 25px;
        font-size: 1em;
        border-right: none;
    }
    
    .hero {
        padding: 60px 20px;
    }
    
    .hero h1 {
        font-size: 2.2em;
    }
    
    .hero p {
        font-size: 1.1em;
    }
    
    .content {
        padding: 30px;
    }
    
    .grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 25px;
    }
    
    .footer .grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .btn {
        width: auto;
        display: inline-block;
    }
}

/* Desktop Styles */
@media (min-width: 1024px) {
    .hero {
        padding: 80px 20px;
    }
    
    .hero h1 {
        font-size: 2.5em;
    }
    
    .hero p {
        font-size: 1.2em;
    }
    
    .content {
        padding: 40px;
    }
    
    .grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 30px;
    }
    
    .footer .grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

/* Large Desktop */
@media (min-width: 1200px) {
    .grid {
        grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    }
}

/* Touch Improvements */
@media (hover: none) and (pointer: coarse) {
    .nav-menu a {
        padding: 20px 15px;
    }
    
    .btn {
        padding: 15px 25px;
        font-size: 1em;
    }
    
    .card {
        padding: 25px;
    }
}

/* Print Styles */
@media print {
    .navigation, .footer {
        display: none;
    }
    
    .hero {
        background: none;
        color: black;
    }
    
    .content {
        box-shadow: none;
        border: 1px solid #ddd;
    }
}