:root {
    --primary-blue: #0055ff;
    --dark-blue: #001a4d;
    --neon-blue: #00bfff;
    --accent-yellow: #ffcc00;
    --bg-light: #f4f7f9;
    --text-dark: #111;
    --text-light: #fff;
    --card-bg: #fff;
}

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

body {
    font-family: 'Montserrat', sans-serif;
    background-color: var(--bg-light);
    color: var(--text-dark);
    line-height: 1.5;
    overflow-x: hidden;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

main {
    flex: 1;
    padding-bottom: 60px;
}

/* --- HEADER --- */
header {
    background-color: #fff;
    padding: 15px 5%;
    display: flex;
    justify-content: flex-end;
    align-items: center;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
    position: sticky;
    top: 0;
    z-index: 100;
}

.logo {
    font-weight: 900;
    font-size: 24px;
    color: var(--primary-blue);
    display: flex;
    align-items: center;
    gap: 10px;
    text-transform: uppercase;
    letter-spacing: 1px;
    text-decoration: none;
    margin-right: clamp(16px, 2vw, 28px);
}

.logo-icon {
    width: 30px;
    height: 30px;
    background: radial-gradient(circle, var(--primary-blue) 20%, transparent 70%);
    border: 2px solid var(--primary-blue);
    border-radius: 50%;
}
.logo img {
    display: block;
    width: 54px;
    height: 54px;
    object-fit: contain;
}

nav {
    display: flex;
    gap: 20px;
    align-items: center;
}

nav a {
    text-decoration: none;
    color: var(--text-dark);
    font-weight: 600;
    font-size: 14px;
    transition: color 0.3s;
    padding: 5px 0;
    border-bottom: 2px solid transparent;
}

nav a:hover, nav a.active {
    color: var(--primary-blue);
    border-bottom: 2px solid var(--primary-blue);
}

.burger {
    display: none;
    cursor: pointer;
    flex-direction: column;
    gap: 5px;
}
.burger span {
    display: block;
    width: 25px;
    height: 3px;
    background-color: var(--text-dark);
    border-radius: 3px;
}

/* --- PAGE HEADER --- */
.page-header {
    background: linear-gradient(135deg, var(--dark-blue) 0%, var(--primary-blue) 100%);
    color: #fff;
    padding: 40px 5%;
    text-align: center;
    position: relative;
    overflow: hidden;
}
.page-header::after {
    content: '';
    position: absolute;
    right: -10%;
    top: -50%;
    width: 400px;
    height: 400px;
    border: 2px solid rgba(255,255,255,0.1);
    border-radius: 50%;
    box-shadow: 0 0 60px rgba(0, 191, 255, 0.2);
    z-index: 0;
}
.page-header h1 {
    font-size: clamp(28px, 4vw, 42px);
    font-weight: 900;
    text-transform: uppercase;
    position: relative;
    z-index: 1;
    margin-bottom: 10px;
}
.page-header p {
    font-size: 16px;
    opacity: 0.9;
    max-width: 700px;
    margin: 0 auto;
    position: relative;
    z-index: 1;
}