@media (max-width: 600px) {
    /* Move daily challenges banner above leaderboard */
    .challenges-top-row {
        display: flex;
        flex-direction: column-reverse;
    }

    /* Keep daily banner sticky at top */
    .challenges-header-box {
        order: -1;
        position: fixed;
        top: 0;
        z-index: 1002;
        width: 100%;
        margin: 0;
        border-radius: 0 0 0 0;
        /* box-shadow removed */
    }

    /* Rotate chain dividers to match white chains (45deg) */
    .challenges-chain-divider img {
        transform: rotate(45deg) !important;
        width: 16px;
        height: 16px;
    }
}
/* --- Mobile-first improvements for daily challenges page --- */
/* Removed misplaced box-shadow and filter lines that caused CSS errors */
    .challenges-top-row {
        flex-direction: column;
        gap: 10px;
        align-items: stretch;
        position: relative;
    }

    .challenges-header-box {
        position: sticky;
        top: 0;
        z-index: 10;
        width: 100%;
        margin: 0 0 10px 0;
        border-radius: 0 0 0 18px;
        box-shadow: none;
    }

    .challenges-panel-shell {
        padding: 10px 2vw 10px 2vw;
        border-radius: 0 0 0 14px;
    }

    .challenges-columns {
        flex-direction: column;
        gap: 14px;
    }

    .challenges-column {
        padding: 10px 0;
        gap: 10px;
    }

    .leaderboard-cards {
        flex-wrap: wrap;
        gap: 8px;
        justify-content: center;
    }

    .leaderboard-card {
        width: 90vw;
        min-width: 0;
        max-width: 340px;
        margin: 0 auto;
        padding: 10px 6px;
    }

    .challenges-chain-divider {
        flex-direction: row;
        width: 100%;
        height: 24px;
        padding: 0;
        justify-content: center;
        gap: 0;
    }

    .challenges-chain-divider img {
        transform: rotate(0deg);
        width: 16px;
        height: 16px;
    }

    .challenge-card {
        border-radius: 10px;
        min-width: 0;
        font-size: 1em;
    }

    .challenge-card-body {
        padding: 10px 8px;
        min-height: 48px;
        font-size: 1em;
    }

    .challenge-card-actions {
        flex-direction: column;
        gap: 6px;
        padding: 0 8px 8px 8px;
    }

    .challenge-accept-btn,
    .challenge-deny-btn,
    .challenge-finish-btn,
    .challenge-giveup-btn {
        border-radius: 8px !important;
        font-size: 1em;
        padding: 10px 0;
    }

/* Challenge card profile row */
.challenge-card-profile {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 16px 0 16px;
}
.challenge-card-avatar {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    object-fit: cover;
    background: #fff;
    border: 2px solid #eee;
    /* box-shadow removed */
}
.challenge-card-username {
    font-family: "Founders Grotesk Text", sans-serif;
    font-size: 1.08em;
    font-weight: 700;
    color: #222;
    letter-spacing: -0.01em;
    white-space: nowrap;
}
.challenge-card-body b {
    font-weight: 700;
    font-size: 1.83em;
    text-align: center;
    display: block;
    margin: 0 auto;
    word-break: break-word;
}
/* ═══ Challenges Screen ═══ */
#challengesScreen {
    position: fixed;
    inset: 0;
    z-index: 1004;
    display: block;
    overflow-y: auto;
    padding:
        calc(env(safe-area-inset-top, 0px) + 0px)
        calc(env(safe-area-inset-right, 0px) + 0px)
        calc(env(safe-area-inset-bottom, 0px) + 50px)
        calc(env(safe-area-inset-left, 0px) + 124px);
    box-sizing: border-box;
    background: #ffffff;
    will-change: opacity, transform;
    transform: translateZ(0);
    transition: opacity 0.22s ease, transform 0.22s ease;
}

#challengesScreen.hidden {
    opacity: 0;
    pointer-events: none;
    transform: translateY(12px);
}

.challenges-screen-shell {
    position: relative;
    z-index: 1;
    width: 100%;
    height: 100%;
}

.challenges-panel-shell {
    position: relative;
    overflow: hidden;
    box-sizing: border-box;
    height: 100%;
    padding: 0 clamp(22px, 2.4vw, 30px) 24px;
    border-radius: 0 0 0 28px;
    background: var(--profile-page-surface);
    contain: layout paint;
    will-change: transform;
    min-height: 0;
    /* box-shadow removed */
    overflow-y: auto;
}

/* ═══ Top Row: Leaderboard + Daily Challenges Header ═══ */
.challenges-top-row {
    display: flex;
    align-items: stretch;
    gap: clamp(14px, 2vw, 24px);
    margin-bottom: clamp(24px, 3vw, 34px);
    margin-top: clamp(168px, 20vw, 238px);
}

/* Desktop/web only: keep leaderboard anchored at top-left. */
@media (min-width: 601px) {
    .challenges-top-row {
        align-items: flex-start;
        margin-top: 12px;
    }

    .challenges-leaderboard h2 {
        text-align: left;
        margin: 0 0 10px;
    }

    .leaderboard-cards {
        justify-content: flex-start;
    }
}

/* ─── Leaderboard Section ─── */
.challenges-leaderboard {
    flex: 1;
    min-width: 0;
}

.challenges-leaderboard h2 {
    margin: 0 0 12px;
    font-family: "Founders Grotesk Text", sans-serif;
    font-size: clamp(22px, 2.8vw, 34px);
    font-weight: 700;
    letter-spacing: -0.04em;
    color: #000;
    text-align: center;
}

.leaderboard-cards {
    display: flex;
    gap: clamp(10px, 1.4vw, 18px);
    justify-content: center;
}

.leaderboard-card {
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    width: clamp(140px, 16vw, 200px);
    padding: clamp(14px, 1.6vw, 22px) clamp(10px, 1.2vw, 16px);
    border-radius: 32px;
    border: 2px solid rgba(0, 0, 0, 0.22);
    background-size: cover;
    background-position: center;
    color: #111;
    text-align: center;
    box-shadow: none;
    overflow: hidden;
}

.leaderboard-card.gold {
    background-image: url("../assets/images/Gold Sheet.jpeg");
}

.leaderboard-card.silver {
    background-image: url("../assets/images/metal%20sheet.jpeg");
}

.leaderboard-card.copper {
    background-image: url("../assets/images/Copper sheet.jpeg");
}

.leaderboard-rank-arrow {
    position: absolute;
    top: 10px;
    left: 14px;
    font-size: clamp(14px, 1.4vw, 20px);
    line-height: 1;
}

.leaderboard-rank-arrow.up {
    color: #4ade4a;
    text-shadow: none;
}

.leaderboard-rank-arrow.down {
    color: #ff5555;
    text-shadow: none;
}

.leaderboard-card-rank {
    font-family: "Founders Grotesk Text", sans-serif;
    font-size: clamp(18px, 2vw, 28px);
    font-weight: 700;
    letter-spacing: -0.03em;
    color: #fff;
    text-shadow: none;
}

.leaderboard-card-name {
    font-family: "Founders Grotesk Text", sans-serif;
    font-size: clamp(13px, 1.4vw, 18px);
    font-weight: 600;
    margin-top: 2px;
    color: #fff;
    text-shadow: none;
}

.leaderboard-card-links {
    font-family: "Founders Grotesk Mono", monospace;
    font-size: clamp(11px, 1.1vw, 15px);
    font-weight: 700;
    margin-top: 4px;
    color: #fff;
    text-shadow: none;
}

/* ─── Daily Challenges Header (yellow box) ─── */
.challenges-header-box {
    flex-shrink: 0;
    width: clamp(160px, 24vw, 320px);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: clamp(16px, 2vw, 24px) clamp(18px, 2vw, 28px);
    border-radius: 0 0 0 32px;
    background: url(../assets/images/darkMetalSheet.jpg);
    background-size: cover;
    background-position: center;

    color: #fff;
    text-align: center;
    position: fixed;
    top: 0;
    right: 0;
    z-index: 12;
    box-shadow:
        0 30px 34px rgba(0, 0, 0, 0.22);
    margin: 0;
}

.challenges-header-box h1 {
    margin: 0;
    font-family: "Founders Grotesk Text", sans-serif;
    font-size: clamp(22px, 2.6vw, 36px);
    font-weight: 700;
    letter-spacing: -0.03em;
    color: #fff;
    line-height: 1.15;
}

.challenges-header-chain {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0;
    margin: 10px 0;
}

.challenges-header-chain img {
    width: 16px;
    height: 16px;
    object-fit: contain;
    transform: rotate(45deg);
    filter: brightness(0) invert(1);
    opacity: 0.7;
}

.challenges-header-links {
    font-family: "Founders Grotesk Text", sans-serif;
    font-size: clamp(16px, 1.8vw, 24px);
    font-weight: 700;
    color: #fff;
}

/* ═══ Columns Area ═══ */
.challenges-columns {
    display: flex;
    gap: 0;
    align-items: stretch;
    min-height: 0;
}

.challenges-column {
    flex: 1;
    min-width: 0;
    display: flex;
    flex-direction: column;
    gap: 14px;
    padding: clamp(14px, 1.6vw, 22px);
}

/* Chain dividers between columns */
.challenges-chain-divider {
    flex-shrink: 0;
    width: 32px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: flex-start;
    padding-top: 48px;
        filter: brightness(1) invert(1);
        opacity: 1;
        box-shadow: none !important;
    overflow: hidden;
}

.challenges-chain-divider img {
    width: 22px;
    height: 22px;
    object-fit: contain;
    transform: rotate(-45deg);
    opacity: 0.5;
}

/* Column headers */
.challenges-column-header {
    margin: 0 0 8px;
    font-family: "Founders Grotesk Text", sans-serif;
    font-size: clamp(18px, 2vw, 26px);
    font-weight: 700;
    letter-spacing: -0.04em;
    color: #000;
    text-align: center;
}

/* ─── In Progress Column (charcoal) ─── */
.challenges-column.col-in-progress {
    background: url(../assets/images/Smooth\ Dark\ Steel.jpeg) center/cover;
    border-radius: 16px;
    box-shadow: none;
}

.challenges-column.col-in-progress .challenges-column-header {
    color: #fff;
}

/* ─── Daily & Friends Columns ─── */
.challenges-column.col-daily,
.challenges-column.col-friends {
    background: transparent;
}

/* ─── Add Button (yellow +) ─── */
.challenges-add-btn {
    position: static;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    min-height: clamp(48px, 5.5vw, 64px);
    padding: 0;
    margin: 0;
    border: none;
    border-radius: 16px;
    background: url(../assets/images/metal\ sheet.jpeg);
    background-size: cover;
    background-position: center;
    color: #fff;
    font-size: clamp(28px, 3.2vw, 42px);
    font-weight: 700;
    font-family: "Founders Grotesk Text", sans-serif;
    cursor: pointer;
    box-shadow: none;
    transition: filter 0.15s ease;
}

.challenges-add-btn:hover {
    filter: brightness(1.08);
    background: url(../assets/images/darkMetalSheet.jpg) center/cover;
    box-shadow: none;
}

/* ─── Challenge Cards ─── */
.challenge-card {
    display: flex;
    flex-direction: column;
    gap: 0;
    border-radius: 16px;
    background: #f8f8f8;
    box-shadow: none;
    overflow: hidden;
}

.challenge-card-body {
    padding: clamp(14px, 1.6vw, 20px);
    min-height: clamp(60px, 8vw, 100px);
    font-family: "Founders Grotesk Text", sans-serif;
    font-size: clamp(13px, 1.2vw, 16px);
    font-weight: 500;
    color: #111;
}

.challenge-card-actions {
    display: flex;
    gap: 0;
}

.challenge-card-carousel {
    display: block;
}

.challenge-card-slide {
    display: block;
}

@keyframes challenge-row-nudge {
    0% { transform: translateX(0); }
    18% { transform: translateX(-24px); }
    36% { transform: translateX(0); }
    54% { transform: translateX(-16px); }
    72% { transform: translateX(0); }
    88% { transform: translateX(-10px); }
    100% { transform: translateX(0); }
}

/* In Progress card actions (yellow buttons) */
.col-in-progress .challenge-card-actions {
    gap: 8px;
    padding: 0 clamp(14px, 1.6vw, 20px) clamp(14px, 1.6vw, 20px);
}

.challenge-finish-btn,
.challenge-giveup-btn {
    position: static;
    flex: 1;
    padding: clamp(8px, 0.9vw, 12px) 0;
    border: none;
    border-radius: 10px;
    font-family: "Founders Grotesk Text", sans-serif;
    font-size: clamp(13px, 1.2vw, 16px);
    font-weight: 700;
    cursor: pointer;
    transition: filter 0.15s ease;
    background: url(../assets/images/darkMetalSheet.jpg) center/cover;
    color: #fff;
    box-shadow: none;
}

.challenge-finish-btn:hover,
.challenge-giveup-btn:hover {
    filter: brightness(1.1);
    background: url(../assets/images/darkMetalSheet.jpg) center/cover;
    box-shadow: none;
}

/* Daily / Friends card actions (dark buttons) */
.col-daily .challenge-card-actions,
.col-friends .challenge-card-actions {
    gap: 0;
}

.challenge-accept-btn,
.challenge-deny-btn {
    position: static;
    flex: 1;
    padding: clamp(8px, 0.9vw, 12px) 0;
    border: none;
    font-family: "Founders Grotesk Text", sans-serif;
    font-size: clamp(13px, 1.2vw, 16px);
    font-weight: 700;
    cursor: pointer;
    transition: filter 0.15s ease;
    background: url(../assets/images/darkMetalSheet.jpg) center/cover;
    color: #fff;
    border-radius: 0;
    box-shadow: none;
}

.challenge-accept-btn {
    border-radius: 0 0 0 16px;
}

.challenge-deny-btn {
    border-radius: 0 0 16px 0;
}

.challenge-accept-btn:hover,
.challenge-deny-btn:hover {
    filter: brightness(1.3);
    background: url(../assets/images/Smooth\ Dark\ Steel.jpeg) center/cover;
    box-shadow: none;
}

/* ═══ Responsive ═══ */
@media (max-width: 980px) {
    #challengesScreen {
        padding-left: calc(env(safe-area-inset-left, 0px) + 14px);
    }

    .challenges-top-row {
        flex-direction: column;
        margin-top: clamp(160px, 27vw, 220px);
    }

    .challenges-header-box {
        width: 100%;
        right: 0;
        left: 0;
        border-radius: 0 0 0 22px;
        margin: 0;
    }

    .leaderboard-cards {
        flex-wrap: wrap;
    }
}

@media (max-width: 600px) {
    #challengesScreen {
        padding:
            calc(env(safe-area-inset-top, 0px) + 0px)
            calc(env(safe-area-inset-right, 0px) + 0px)
            calc(env(safe-area-inset-bottom, 0px) + 50px)
            calc(env(safe-area-inset-left, 0px) + 76px);
    }

    .challenges-panel-shell {
        padding: 0 10px 16px;
        border-radius: 0 0 0 22px;
    }

    .challenges-top-row {
        margin-top: 150px;
        margin-bottom: 18px;
    }

    .challenges-columns {
        flex-direction: column;
        gap: 18px;
    }

    .challenges-chain-divider {
        flex-direction: row;
        width: 100%;
        height: 32px;
        padding: 0;
        justify-content: center;
        gap: 0;
    }

    .challenges-chain-divider img {
        transform: rotate(0deg);
    }

    .challenge-card-carousel {
        display: flex;
        gap: 12px;
        overflow-x: auto;
        overflow-y: visible;
        scroll-snap-type: x mandatory;
        -webkit-overflow-scrolling: touch;
        padding-bottom: 4px;
    }

    .challenge-card-carousel.nudge-once {
        animation: challenge-row-nudge 0.85s ease-out 1;
    }

    .challenge-card-slide {
        flex: 0 0 calc(100vw - 140px);
        max-width: calc(100vw - 140px);
        scroll-snap-align: start;
    }

    .challenge-card-carousel::-webkit-scrollbar {
        height: 6px;
    }

    .challenge-card-carousel::-webkit-scrollbar-thumb {
        background: rgba(0, 0, 0, 0.25);
        border-radius: 999px;
    }

    .leaderboard-card {
        width: clamp(100px, 28vw, 160px);
        padding: 12px 8px;
    }
}

/* Body class when challenges page is open */
body.challenges-open #chainCanvas {
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.2s ease;
}

body.challenges-open #statusMessage,
body.challenges-open #removeTagBtn {
    display: none !important;
}