:root {
    --bg: #f8f8f8;
    --text: #1a1a1a;
    --gradient-1: #ff006e;
    --gradient-2: #fb5607;
    --gradient-3: #ffbe0b;
    --gradient-4: #8338ec;
    --gradient-5: #3a86ff;
    --theme-toggle-bg: #ffffff44;
    --theme-toggle-hover: #ffffff66;
    --text-shadow: 0 1px 2px rgba(0, 0, 0, 0.1);
    color-scheme: light dark;
}

.theme-option .lucide-icon {
    width: 1.2rem;
    height: 1.2rem;
    vertical-align: middle;
    margin-right: 0.5rem;
}

.theme-option[data-option="light"] .lucide-icon {
    color: var(--gradient-3);
}

.theme-option[data-option="dark"] .lucide-icon {
    color: var(--gradient-5);
}

[data-theme="dark"] {
    --bg: #2e3440;
    --text: #eceff4;
    --gradient-1: #bf616a;
    --gradient-2: #d08770;
    --gradient-3: #ebcb8b;
    --gradient-4: #b48ead;
    --gradient-5: #5e81ac;
    --theme-toggle-bg: #ffffff22;
    --theme-toggle-hover: #ffffff44;
    --text-shadow: 0 1px 2px rgba(255, 255, 255, 0.1);
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: var(--bg);
    color: var(--text);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

main {
    padding: 4rem 1rem 2rem 1rem;
    margin: 0;
    max-width: 100%;
    text-align: left;
    flex: 1;
}

h1 {
    font-size: clamp(3rem, 10vw, 6rem);
    font-weight: 800;
    background: linear-gradient(
            135deg,
            var(--gradient-1) 0%,
            var(--gradient-2) 25%,
            var(--gradient-3) 50%,
            var(--gradient-4) 75%,
            var(--gradient-5) 100%
    );
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin: 0;
}

p {
    font-size: clamp(1rem, 3vw, 1.25rem);
    opacity: 0.7;
    font-weight: 400;
    margin: 1rem 0 0 0;
}

.theme-toggle-container {
    position: fixed;
    top: 1rem;
    right: 1rem;
    z-index: 1000;
}

.theme-toggle-btn {
    background: var(--theme-toggle-bg);
    color: var(--text);
    border: none;
    width: 2.5rem;
    height: 2.5rem;
    border-radius: 0.5rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    transition: all 0.2s ease;
}

.theme-toggle-btn:hover {
    background: var(--theme-toggle-hover);
    transform: scale(1.05);
}

.theme-dropdown {
    position: absolute;
    top: calc(100% + 0.5rem);
    right: 0;
    background: var(--theme-toggle-hover);
    border-radius: 0.5rem;
    padding: 0.5rem;
    min-width: 120px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all 0.2s ease;
}

.theme-dropdown.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.theme-option {
    display: block;
    width: 100%;
    padding: 0.5rem;
    margin: 0.2rem 0;
    background: transparent;
    border: none;
    border-left: 2px solid transparent;
    border-radius: 0.5rem;
    cursor: pointer;
    text-align: left;
    font-size: 0.9rem;
    color: var(--text);
    font-weight: 500;
    text-shadow: var(--text-shadow);
    transition: background 0.2s ease, color 0.2s ease, border-left-color 0.2s ease;
}

.theme-option:hover {
    background: var(--theme-toggle-hover);
    border-radius: 0.5rem;
}

.theme-option.active {
    background: var(--theme-toggle-hover);
    border-left: 2px solid var(--gradient-1);
    border-radius: 0.5rem;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    font-weight: bold;
}

.theme-option.active[data-option="light"] {
    border-left-color: var(--gradient-3);
}

.theme-option.active[data-option="dark"] {
    border-left-color: var(--gradient-5);
}

.main-nav {
    position: fixed;
    top: 1rem;
    left: 1rem;
    display: flex;
    gap: 1.5rem;
    z-index: 1000;
}

.main-nav a {
    color: var(--text);
    text-decoration: none;
    font-size: 0.9rem;
    padding: 0.5rem;
    border-radius: 0.25rem;
    transition: background 0.2s ease;
    opacity: 0.8;
}

.main-nav a:hover {
    opacity: 1;
    background: var(--theme-toggle-bg);
    border-radius: 0.25rem;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}

.main-nav a.active {
    opacity: 1;
    background: #00000022;
    border-radius: 0.25rem;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    font-weight: bold;
}

[data-theme="dark"] .main-nav a.active {
    background: var(--theme-toggle-bg);
}

footer {
    padding: 1rem 1rem;
    font-size: 0.9rem;
    opacity: 1;
    background: var(--theme-toggle-bg);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    margin-top: auto;
    border-top: 1px solid var(--theme-toggle-hover);
}

.footer-content {
    display: flex;
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
    gap: 1rem;
}

.copyright {
    opacity: 0.8;
    color: var(--text);
}

.social-links {
    display: flex;
    gap: 1.5rem;
    list-style: none;
    padding: 0;
    margin: 0;
}

.social-link {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 3rem;
    height: 3rem;
    border-radius: 0.5rem;
    background: var(--theme-toggle-bg);
    color: var(--text);
    text-decoration: none;
    transition: all 0.3s ease;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}

.social-link:hover {
    transform: scale(1.05);
    opacity: 1;
    background: var(--theme-toggle-hover);
}

.lucide-icon {
    display: inline-block;
    vertical-align: middle;
    width: 1em;
    height: 1em;
    fill: none;
    stroke: currentColor;
    stroke-width: 2;
    transition: all 0.2s ease;
}

.theme-toggle-btn .lucide-icon {
    width: 1.2rem;
    height: 1.2rem;
}

[data-theme="dark"] .theme-toggle-btn .lucide-icon {
    color: #ffffff;
}

.social-link .lucide-icon {
    width: 1.5rem;
    height: 1.5rem;
}

@media (max-width: 768px) {
    .main-nav {
        gap: 0.8rem;
    }

    .footer-content {
        flex-direction: column;
        gap: 0.5rem;
    }

    .social-links {
        gap: 1rem;
    }
}