:root {
    --bg-dark: #121212;         
    --bg-panel: #1e1e1e;       
    --primary-orange: #ff6600;  
    --primary-hover: #e65c00;   
    --text-main: #e0e0e0;      
    --text-muted: #a0a0a0;      
    --white: #ffffff;
    --shadow-sm: 0 2px 8px rgba(0,0,0,0.3);
    --shadow-md: 0 8px 24px rgba(0,0,0,0.4);
    --shadow-lg: 0 16px 48px rgba(0,0,0,0.5);
    --transition-fast: all 0.2s ease;
    --transition-slow: all 0.4s ease;
    --border-radius: 8px;
    --section-padding: 80px 20px;
}

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

html {
    height: 100%;
}

body {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    min-height: 100dvh;
    background-color: var(--bg-dark);
    color: var(--text-main);
    line-height: 1.6;
    margin: 0;
}

main {
    flex: 1 0 auto;
    width: 100%;
}

header, footer {
    flex-shrink: 0;
}

h1, h2, h3, h4 {
    color: var(--white);
    margin-bottom: 1rem;
    font-weight: 700;
}

p {
    margin-bottom: 1.5rem;
    color: var(--text-main);
}

a {
    text-decoration: none;
    color: inherit;
    transition: var(--transition-fast);
}

ul {
    list-style: none;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    width: 100%;
}

.text-orange { 
    color: var(--primary-orange); 
}
.btn-primary {
    display: inline-block;
    background-color: #ff6600;
    color: white;
    padding: 12px 25px;
    text-decoration: none;
    border-radius: 5px;
    font-weight: bold;
    text-transform: uppercase;
    transition: all 0.3s ease;
    border: none;
    margin-top: 10px;
}

.btn-primary:hover {
    background-color: #e65c00;
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(255, 102, 0, 0.4);
    color: white;
}