.app-header {
    background: rgba(15, 23, 42, 0.85);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border-accent);
    position: relative;
    z-index: 10;
}

/* same width cap and padding as .app-shell so the badges end at the sidebar's edge */
.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    max-width: 1500px;
    margin: 0 auto;
    padding: 0.6rem clamp(1rem, 2vw, 2rem);
}

.logo-container {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

h1 {
    font-size: 1.6rem;
    font-weight: 700;
    margin: 0;
    line-height: 1;
    background: linear-gradient(rgba(255,255,255,0.1) 1px, transparent 1px),
                linear-gradient(90deg, rgba(255,255,255,0.1) 1px, transparent 1px);
    background-size: 5px 5px;
    -webkit-background-clip: text;
    background-clip: text;
    color: var(--text);
    text-shadow:
        -1px -1px 0 rgba(0,0,0,0.5),
        1px -1px 0 rgba(0,0,0,0.5),
        -1px 1px 0 rgba(0,0,0,0.5),
        1px 1px 0 rgba(0,0,0,0.5),
        2px 2px var(--fg-color);
}

.version-badge {
    padding: 0.15rem 0.5rem;
    font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
    font-size: 0.7rem;
    color: rgba(226, 232, 240, 0.7);
    background: rgba(15, 23, 42, 0.7);
    border: 1px solid var(--border-accent);
    border-radius: 999px;
    text-decoration: none;
    transition: color 0.15s ease, border-color 0.15s ease;
}

.version-badge:hover {
    color: rgba(226, 232, 240, 1);
    border-color: rgba(99, 102, 241, 0.6);
}

.header-links {
    display: flex;
    align-items: center;
    gap: 0.9rem;
}

/* fixed width keeps the two badges matched */
.badge {
    width: 250px;
    display: flex;
    align-items: center;
    transition: opacity 0.2s ease;
    flex-shrink: 0;
}

.badge:hover {
    opacity: 0.9;
}

.badge img {
    width: 100%;
    height: auto;
    border-radius: 4px;
    display: block;
}

/* github star badge, primer dark-mode grays */
.gh-star-badge {
    --gh-gray-100: #c9d1d9;
    --gh-gray-500: #484f58;
    --gh-gray-600: #30363d;
    --gh-gray-700: #21262d;
    height: 22px;
    /* grow past the matched width rather than ellipsize the full name */
    min-width: max-content;
    align-items: stretch;
    overflow: hidden;
    border-radius: 4px;
    border: 1px solid var(--gh-gray-500);
    font-size: 0.6875rem;
    font-weight: 600;
    line-height: 1;
    text-decoration: none;
    white-space: nowrap;
    color: var(--gh-gray-100);
}

.gh-star-label {
    flex: 1;
    min-width: 0;
    display: flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0 0.6rem;
    background: var(--gh-gray-700);
}

.gh-repo {
    overflow: hidden;
    text-overflow: ellipsis;
}

.gh-star-count {
    display: flex;
    align-items: center;
    padding: 0 0.55rem;
    background: var(--gh-gray-600);
    border-left: 1px solid var(--gh-gray-500);
    font-variant-numeric: tabular-nums;
}

/* ── coffee cup */
.cup {
    width: 16px;
    height: 20px;
    border: 2px solid var(--text);
    border-radius: 0 0 8px 8px;
    position: relative;
}

.handle {
    width: 6px;
    height: 10px;
    border: 2px solid var(--text);
    border-radius: 0 4px 4px 0;
    position: absolute;
    right: -6px;
    top: 4px;
}

.steam {
    position: absolute;
    top: -6px;
    left: 2px;
    right: 2px;
    height: 6px;
    display: flex;
    justify-content: space-between;
}

.steam::before,
.steam::after {
    content: "";
    width: 3px;
    height: 100%;
    background: rgba(255,255,255,0.7);
    border-radius: 3px;
    opacity: 0;
}

@keyframes steam {
    0% {
        transform: none;
        opacity: 0;
    }
    25% {
        opacity: 0.7;
    }
    60% {
        opacity: 0.25;
    }
    100% {
        transform: translateY(-6px) scale(1.3);
        opacity: 0;
    }
}

.cup.brewing .steam::before,
.cup.brewing .steam::after {
    animation: steam 2.2s ease-in-out infinite;
}

.cup.brewing .steam::after {
    animation-delay: 1.1s;
}

.cup.done,
.cup.done .handle {
    animation: cup-flash 0.45s ease-in-out 2;
}

@keyframes cup-flash {
    30% {
        border-color: #312e81;
    }
}

@media (prefers-reduced-motion: reduce) {
    .cup.brewing .steam::before,
    .cup.brewing .steam::after {
        animation: none;
        opacity: 0.5;
    }

    .cup.done,
    .cup.done .handle {
        animation: none;
    }
}

@media (max-width: 900px) {
    .header-inner {
        gap: 0.6rem;
        padding: 0.5rem 0.75rem;
    }

    h1 {
        font-size: 1.4rem;
    }

    .logo-container {
        gap: 0.5rem;
    }

    .header-links {
        flex: 0 1 205px;
        min-width: 0;
        flex-direction: column;
        align-items: stretch;
        gap: 0.3rem;
    }

    .badge {
        width: 100%;
    }

    /* the stacked column can't grow, the owner prefix goes instead */
    .gh-star-badge {
        height: 20px;
        min-width: 0;
        font-size: 0.625rem;
    }

    .gh-owner {
        display: none;
    }

    .gh-star-label svg {
        width: 13px;
        height: 13px;
    }
}

@media (max-width: 360px) {
    h1 {
        font-size: 1.25rem;
    }

    .version-badge {
        display: none;
    }
}