:root {
    --bg-main: #0f0f0f;
    --bg-header: #0f0f0f;
    --bg-input: #121212;
    --text-primary: #f1f1f1;
    --text-secondary: #aaaaaa;
    --border-color: #272727;
    --border-active: #1c62b9;
    --yt-red: #ff0000;
    --btn-bg: #222222;
    --btn-hover: #333333;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    -webkit-tap-highlight-color: transparent;
}

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

body.modal-open {
    overflow: hidden;
}

.app-header {
    position: sticky;
    top: 0;
    z-index: 100;
    height: 56px;
    background-color: var(--bg-header);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 16px;
}

.header-left {
    display: flex;
    align-items: center;
    flex-shrink: 0;
}

.brand-logo {
    display: flex;
    align-items: center;
    gap: 8px;
    text-decoration: none;
    color: var(--text-primary);
}

.logo-icon {
    color: var(--yt-red);
    font-size: 22px;
    line-height: 1;
}

.logo-text {
    font-size: 19px;
    font-weight: 700;
    letter-spacing: -0.5px;
}

.logo-red {
    color: var(--yt-red);
}

.header-center {
    flex: 1;
    max-width: 640px;
    margin: 0 20px;
    display: flex;
    align-items: center;
}

.search-back-btn {
    display: none;
}

.search-form {
    display: flex;
    align-items: center;
    width: 100%;
    position: relative;
}

.search-input {
    flex: 1;
    height: 40px;
    background-color: var(--bg-input);
    border: 1px solid var(--border-color);
    border-right: none;
    border-radius: 40px 0 0 40px;
    padding: 0 36px 0 16px;
    color: var(--text-primary);
    font-size: 15px;
    outline: none;
    transition: border-color 0.2s ease;
}

.search-input:focus {
    border-color: var(--border-active);
}

.search-clear-btn {
    position: absolute;
    right: 68px;
    top: 50%;
    transform: translateY(-50%);
    width: 28px;
    height: 28px;
    background: transparent;
    border: none;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    border-radius: 50%;
}

.search-clear-btn:hover {
    color: var(--text-primary);
}

.search-button {
    height: 40px;
    width: 60px;
    background-color: #202020;
    border: 1px solid var(--border-color);
    border-radius: 0 40px 40px 0;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: background-color 0.2s, color 0.2s;
    flex-shrink: 0;
}

.search-button:hover {
    background-color: #2e2e2e;
    color: var(--text-primary);
}

.header-right {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-shrink: 0;
}

.mobile-search-toggle {
    display: none;
}

.stream-status-pill {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 12px;
    background-color: #1a1a1a;
    border: 1px solid var(--border-color);
    border-radius: 20px;
    font-size: 12px;
    color: var(--text-secondary);
}

.status-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background-color: #2ba640;
}

.main-content {
    flex: 1;
    padding: 24px;
    max-width: 1600px;
    width: 100%;
    margin: 0 auto;
}

.app-footer {
    border-top: 1px solid var(--border-color);
    padding: 20px 24px;
    text-align: center;
    margin-top: auto;
}

.footer-note {
    font-size: 13px;
    color: var(--text-secondary);
}

.is-hidden {
    display: none !important;
}

@media (max-width: 680px) {
    .app-header {
        height: 52px;
        padding: 0 10px;
    }

    .header-center {
        display: none;
    }

    .mobile-search-toggle {
        display: flex;
        align-items: center;
        justify-content: center;
        width: 40px;
        height: 40px;
        border: none;
        background: transparent;
        color: var(--text-primary);
        cursor: pointer;
        border-radius: 50%;
    }

    .app-header.search-expanded .header-left,
    .app-header.search-expanded .header-right {
        display: none;
    }

    .app-header.search-expanded .header-center {
        display: flex;
        flex: 1;
        margin: 0;
        max-width: 100%;
    }

    .app-header.search-expanded .search-back-btn {
        display: flex;
        align-items: center;
        justify-content: center;
        width: 38px;
        height: 38px;
        border: none;
        background: transparent;
        color: var(--text-primary);
        cursor: pointer;
        border-radius: 50%;
        margin-right: 6px;
        flex-shrink: 0;
    }

    .app-header.search-expanded .search-input {
        font-size: 16px;
        height: 38px;
    }

    .app-header.search-expanded .search-button {
        height: 38px;
        width: 52px;
    }

    .app-header.search-expanded .search-clear-btn {
        right: 58px;
    }

    .stream-status-pill .status-text {
        display: none;
    }

    .stream-status-pill {
        padding: 8px;
        border-radius: 50%;
    }

    .main-content {
        padding: 12px 10px;
    }
}