/* Navigation */
.navbar {
    position: fixed; top: 0; width: 100%; z-index: 1000;
    background: var(--card-bg); backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--card-border);
    transition: all var(--transition-normal);
}
.navbar .container {
    display: flex; justify-content: space-between; align-items: center;
    padding: var(--spacing-sm) var(--spacing-md);
}
.nav-brand h2 {
    background: var(--accent-gradient);
    -webkit-background-clip: text; -webkit-text-fill-color: transparent;
    background-clip: text; font-size: 1.5rem; font-weight: 700;
}
.nav-menu {display: flex; list-style: none; gap: var(--spacing-md); align-items: center;}
.nav-menu a {
    color: var(--text-secondary); text-decoration: none; font-weight: 500;
    transition: color var(--transition-fast); position: relative;
}
.nav-menu a::after {
    content: ''; position: absolute; bottom: -5px; left: 0; width: 0; height: 2px;
    background: var(--accent-gradient); transition: width var(--transition-normal);
}
.nav-menu a:hover, .nav-menu a.active {color: var(--accent-primary);}
.nav-menu a:hover::after, .nav-menu a.active::after {width: 100%;}
.theme-toggle {
    background: var(--card-bg); border: 1px solid var(--card-border);
    color: var(--text-primary); width: 40px; height: 40px; border-radius: 50%;
    cursor: pointer; display: flex; align-items: center; justify-content: center;
    transition: all var(--transition-fast); box-shadow: 0 4px 6px var(--shadow-color);
}
.theme-toggle:hover {transform: scale(1.1); box-shadow: 0 0 20px var(--glow-color);}
.hamburger {display: none; flex-direction: column; gap: 5px; cursor: pointer;}
.hamburger span {
    width: 25px; height: 3px; background: var(--text-primary);
    border-radius: 3px; transition: all var(--transition-normal);
}

/* Buttons */
.btn {
    padding: 0.875rem 2rem; border-radius: var(--radius-sm); text-decoration: none;
    font-weight: 600; transition: all var(--transition-normal);
    display: inline-flex; align-items: center; gap: 0.5rem;
    border: none; cursor: pointer; font-size: 1rem;
}
.btn-primary {
    background: var(--accent-gradient); color: white;
    box-shadow: 0 4px 15px var(--glow-color);
}
.btn-primary:hover {transform: translateY(-2px); box-shadow: 0 8px 25px var(--glow-color);}
.btn-secondary {
    background: transparent; color: var(--accent-primary);
    border: 2px solid var(--accent-primary);
}
.btn-secondary:hover {background: var(--accent-primary); color: white; transform: translateY(-2px);}

/* Typography */
.glowing-text {
    background: var(--accent-gradient);
    -webkit-background-clip: text; -webkit-text-fill-color: transparent;
    background-clip: text; position: relative; display: inline-block;
}
.page-title {font-size: 3rem; text-align: center; margin-bottom: var(--spacing-sm);}
.page-subtitle {
    text-align: center; color: var(--text-secondary);
    font-size: 1.2rem; margin-bottom: var(--spacing-lg);
}
.section-title {
    font-size: 2.5rem; text-align: center; margin-bottom: var(--spacing-sm);
    background: var(--accent-gradient);
    -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
}
.section-subtitle {
    text-align: center; color: var(--text-secondary);
    font-size: 1.1rem; margin-bottom: var(--spacing-lg);
}

/* Footer */
.footer {
    background: var(--bg-secondary); padding: var(--spacing-lg) 0;
    text-align: center; border-top: 1px solid var(--card-border);
}
.footer p {color: var(--text-secondary); margin: 0.5rem 0;}