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

:root {
    --bg-color: #FFF5F0;
    --text-color: #2D1B2E;
    --nav-bg: rgba(255, 245, 240, 0.95);
    --nav-shadow: rgba(255, 107, 53, 0.15);
    --accent-primary: #FF6B35;
    --accent-secondary: #F7931E;
    --accent-tertiary: #FBB040;
    --hover-color: #E85A2A;
    --disabled-color: #C4A19E;
    --gradient-start: #FF6B35;
    --gradient-mid: #F7931E;
    --gradient-end: #FBB040;
}

[data-theme="dark"] {
    --bg-color: #0F0A1E;
    --text-color: #FFF5F0;
    --nav-bg: rgba(15, 10, 30, 0.95);
    --nav-shadow: rgba(139, 92, 246, 0.2);
    --accent-primary: #FF6B35;
    --accent-secondary: #8B5CF6;
    --accent-tertiary: #A78BFA;
    --hover-color: #FF8555;
    --disabled-color: #6B5A6E;
    --gradient-start: #FF6B35;
    --gradient-mid: #A855F7;
    --gradient-end: #6A4C93;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    transition: background-color 0.4s ease, color 0.4s ease;
    overflow-x: hidden;
}

nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background-color: var(--nav-bg);
    backdrop-filter: blur(10px);
    padding: 1.5rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    z-index: 1000;
    box-shadow: 0 2px 20px var(--nav-shadow);
    border-bottom: 1px solid rgba(255, 107, 53, 0.1);
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    letter-spacing: -0.5px;
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-mid), var(--gradient-end));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

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

.nav-links a {
    color: var(--text-color);
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s ease;
    position: relative;
}

.nav-links a:hover:not(.disabled) {
    color: var(--hover-color);
    transform: translateY(-2px);
}

.nav-links a.active {
    color: var(--accent-primary);
}

.nav-links a.active::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--gradient-start), var(--gradient-mid));
    border-radius: 2px;
}

.nav-links a.disabled {
    color: var(--disabled-color);
    cursor: not-allowed;
}

.nav-links a.hidden {
    display: none;
}

.theme-toggle {
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
    border: none;
    color: white;
    cursor: pointer;
    font-size: 1.2rem;
    padding: 0.6rem;
    border-radius: 50%;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 15px rgba(255, 107, 53, 0.3);
}

.theme-toggle:hover {
    transform: scale(1.1) rotate(15deg);
    box-shadow: 0 6px 20px rgba(255, 107, 53, 0.4);
}

main {
    margin-top: 80px;
    padding: 2rem;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: calc(100vh - 80px);
}

.image-container {
    width: 100%;
    max-width: 1400px;
    display: flex;
    justify-content: center;
    align-items: center;
}

.hero-image {
    width: 100%;
    height: auto;
    display: block;
    border-radius: 12px;
    box-shadow: 0 20px 60px var(--nav-shadow);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.hero-image:hover {
    transform: translateY(-5px);
    box-shadow: 0 25px 70px var(--nav-shadow);
}

.placeholder {
    width: 100%;
    aspect-ratio: 16/9;
    background: linear-gradient(135deg, var(--gradient-start) 0%, var(--gradient-mid) 50%, var(--gradient-end) 100%);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.5rem;
    font-weight: 600;
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
}

@media (max-width: 768px) {
    nav {
        padding: 1rem 1.5rem;
    }

    .logo {
        font-size: 1.2rem;
    }

    .nav-links {
        gap: 1rem;
    }

    .nav-links a {
        font-size: 0.9rem;
    }

    main {
        margin-top: 70px;
        padding: 1rem;
    }

    .placeholder {
        font-size: 1rem;
    }
}

@media (max-width: 480px) {
    nav {
        flex-direction: column;
        gap: 1rem;
        padding: 1rem;
    }

    .nav-links {
        gap: 0.75rem;
        font-size: 0.85rem;
    }

    main {
        margin-top: 120px;
    }
}