:root {
    --primary-color: #4A7CFF;
    --primary-dark: #3B63CC;
    --primary-light: #E8F0FE;
    --text-dark: #1A1A2E;
    --text-secondary: #6B7280;
    --text-light: #9CA3AF;
    --light-bg: #F5F7FA;
    --card-bg: #F8FAFC;
    --white: #FFFFFF;
    --dark-section: #0F172A;
    --dark-section-light: #1E293B;
    --accent-orange: #F59E0B;
    --border-color: #E5E7EB;
    --max-width: 1200px;

    /* Backward compatibility for other pages */
    --secondary-color: #3B63CC;
    --text-color: #1A1A2E;
    --accent-color: #F59E0B;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    line-height: 1.6;
    color: var(--text-dark);
    background: var(--white);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 24px;
}

img {
    max-width: 100%;
    height: auto;
}

/* Header */
.header {
    position: fixed;
    width: 100%;
    top: 0;
    left: 0;
    background: rgba(255, 255, 255, 0.97);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    z-index: 1000;
    transition: box-shadow 0.3s ease;
}

.header.scrolled {
    box-shadow: 0 1px 0 var(--border-color);
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 2rem;
    max-width: var(--max-width);
    margin: 0 auto;
}

.logo {
    display: flex;
    align-items: center;
    cursor: pointer;
    user-select: none;
    text-decoration: none;
}

.logo-icon {
    height: 36px;
    width: auto;
}

.nav-links {
    display: flex;
    gap: 2rem;
    list-style: none;
}

.nav-links a {
    text-decoration: none;
    color: var(--text-secondary);
    font-weight: 500;
    font-size: 0.9rem;
    transition: color 0.2s ease;
}

.nav-links a:hover {
    color: var(--text-dark);
}

/* Mobile menu toggle */
.mobile-menu-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    width: 28px;
    height: 22px;
    position: relative;
    z-index: 1001;
}

.mobile-menu-toggle span {
    display: block;
    width: 100%;
    height: 2px;
    background-color: var(--text-dark);
    margin: 5px 0;
    transition: all 0.3s ease;
    border-radius: 2px;
}

@media (max-width: 768px) {
    .mobile-menu-toggle {
        display: block;
    }

    .nav-links {
        position: fixed;
        top: 0;
        right: -100%;
        width: 80%;
        max-width: 320px;
        height: 100vh;
        background: var(--white);
        display: flex;
        flex-direction: column;
        justify-content: center;
        align-items: center;
        gap: 2rem;
        transition: right 0.3s ease;
        z-index: 1000;
        box-shadow: -5px 0 20px rgba(0, 0, 0, 0.1);
    }

    .nav-links.active {
        right: 0;
    }

    .nav-links li {
        opacity: 0;
        transform: translateX(20px);
        transition: all 0.4s ease;
        transition-delay: calc(0.08s * var(--i, 1));
    }

    .nav-links.active li {
        opacity: 1;
        transform: translateX(0);
    }

    .nav-links a {
        font-size: 1.1rem;
    }

    .mobile-menu-toggle.active span:nth-child(1) {
        transform: translateY(7px) rotate(45deg);
    }

    .mobile-menu-toggle.active span:nth-child(2) {
        opacity: 0;
    }

    .mobile-menu-toggle.active span:nth-child(3) {
        transform: translateY(-7px) rotate(-45deg);
    }

    .menu-overlay {
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        background: rgba(0, 0, 0, 0.4);
        z-index: 999;
        opacity: 0;
        visibility: hidden;
        transition: all 0.3s ease;
    }

    .menu-overlay.active {
        opacity: 1;
        visibility: visible;
    }
}