:root {
    --bg-color: #F9F9F9;
    --text-color: #333333;
    --glass-bg: rgba(255, 255, 255, 0.5);
    --glass-bg-hover: rgba(255, 255, 255, 0.65);
    --glass-border: rgba(255, 255, 255, 0.2);
    --glass-shadow: rgba(0, 0, 0, 0.1);
}

[data-theme="dark"] {
    --bg-color: #1a1a1a;
    --text-color: #ffffff;
    --glass-bg: rgba(0, 0, 0, 0.2);
    --glass-bg-hover: rgba(0, 0, 0, 0.3);
    --glass-border: rgba(255, 255, 255, 0.1);
    --glass-shadow: rgba(0, 0, 0, 0.3);
}

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

body {
    background: var(--bg-color);
    color: var(--text-color);
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    min-height: 100vh;
    transition: background-color 0.3s, color 0.3s;
}

.container {
    max-width: 100%;
    margin: 0 auto;
    position: relative;
}

.header-container {
    position: fixed;
    width: 100%;
    padding: 2rem;
    z-index: 100;
}

header {
    backdrop-filter: blur(10px);
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 15px;
    padding: 20px;
    margin-bottom: 30px;
    display: flex;
    width: 100%;
    justify-content: space-between;
    align-items: center;
    box-shadow: 0 4px 6px var(--glass-shadow);
    position: relative;
}

h1 {
    font-size: 2rem;
    font-weight: 600;
}

.controls {
    display: flex;
    gap: 20px;
}

.burger-menu {
    display: none;
    flex-direction: column;
    justify-content: space-between;
    width: 30px;
    height: 21px;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 0;
    z-index: 10;
}

.burger-menu span {
    width: 100%;
    height: 3px;
    background-color: var(--text-color);
    border-radius: 3px;
    transition: all 0.3s ease;
}

.burger-menu.active span:nth-child(1) {
    transform: translateY(9px) rotate(45deg);
}

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

.burger-menu.active span:nth-child(3) {
    transform: translateY(-9px) rotate(-45deg);
}

.theme-toggle {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    border: none;
    background: var(--glass-bg);
    cursor: pointer;
    position: relative;
    overflow: hidden;
    transition: all 0.3s ease;
}

.sun, .moon {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 20px;
    height: 20px;
    border-radius: 50%;
    transition: all 0.3s ease;
}

.sun {
    background: #ffd700;
    box-shadow: 0 0 10px #ffd700;
}

.moon {
    background: #ffffff;
    box-shadow: 0 0 10px #ffffff;
    opacity: 0;
}

[data-theme="dark"] .sun {
    opacity: 0;
}

[data-theme="dark"] .moon {
    opacity: 1;
}

.refresh-button {
    padding: 10px 20px;
    border: none;
    border-radius: 8px;
    background: rgba(0, 0, 0, 0.1);
    color: var(--text-color);
    cursor: pointer;
    backdrop-filter: blur(5px);
    border: 1px solid var(--glass-border);
    transition: all 0.3s ease;
}

.refresh-button:hover {
    background: rgba(0, 0, 0, 0.65);
    color: #ffffff;
}

.ads-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
    padding: 10rem 2rem;
}

.ad-unit {
    backdrop-filter: blur(10px);
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 15px;
    padding: 20px;
    min-height: 250px;
    box-shadow: 0 4px 6px var(--glass-shadow);
    transition: transform 0.3s ease;
}

.ad-unit:hover {
    transform: translateY(-5px);
}

@media (max-width: 768px) {
    h1 {
        font-size: 1.5rem;
    }

    .burger-menu {
        display: flex;
    }

    .header-container {
        padding: 1rem;
    }

    .controls {
        position: absolute;
        top: 120%;
        left: 0;
        width: 100%;
        background: var(--glass-bg-hover);
        backdrop-filter: blur(10px);
        padding: 20px;
        flex-direction: column;
        align-items: center;
        gap: 15px;
        border-radius: 15px;
        border-top: none;
        border-left: 1px solid var(--glass-border);
        border-right: 1px solid var(--glass-border);
        border-bottom: 1px solid var(--glass-border);
        box-shadow: 0 4px 6px var(--glass-shadow);
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: transform 0.3s ease, opacity 0.3s ease, visibility 0.3s ease;
        z-index: 100;
    }

    .controls.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }

    .refresh-button {
        width: 100%;
        max-width: 200px;
    }

    .ads-container {
        padding: 8rem 1rem;
    }
}