:root {
    --accent-orange: #ff7a1a;
    --accent-pink: #ff4f9a;
    --window-blue: #1769aa;
}

body.party-mode {
    --sky-top: #ff9b52;
    --sky-mid: #ffd0b0;
    --sky-bottom: #fff0e7;
    --ink: #5a193e;
    --ink-deep: #a31f58;
    --nav-border: #d94b72;
    --panel-alt: rgba(255, 174, 145, 0.72);
    --link-bg-mid: #ffd1e4;
    --link-bg-end: #ff91b9;
    --line: #ed6d88;
}

body.theme-gold {
    --sky-top: #1d8c8a;
    --sky-mid: #9bd4b1;
    --sky-bottom: #eff7d0;
    --ink: #173f42;
    --ink-deep: #155b57;
    --nav-border: #b18421;
    --panel-alt: rgba(169, 222, 164, 0.72);
    --link-bg-mid: #e4edb1;
    --link-bg-end: #d7b84f;
    --line: #83aa55;
}

#achievement-dock {
    position: fixed;
    right: 14px;
    bottom: 14px;
    z-index: 20;
    width: min(260px, calc(100vw - 28px));
    padding: 10px 12px;
    color: #16314d;
    background: linear-gradient(#f8fcff, #c5e4f7);
    border: 1px solid #4d85ac;
    box-shadow: inset 0 1px white, 2px 3px 0 rgba(20, 72, 112, 0.25);
    font: 12px Tahoma, sans-serif;
    text-align: left;
}

#achievement-dock strong {
    display: block;
    margin-bottom: 4px;
    color: #124d7c;
}

#achievement-dock.party-dock {
    color: #5a193e;
    background: linear-gradient(#fff5f9, #ffc1d9);
    border-color: #d94b72;
}

#achievement-dock.party-dock strong {
    color: #a31f58;
}

.theme-gold #achievement-dock.party-dock {
    color: #17494a;
    background: linear-gradient(#f6f8d8, #b9d9a0);
    border-color: #b18421;
}

.theme-gold #achievement-dock.party-dock strong {
    color: #155b57;
}

.achievement-toast {
    position: fixed;
    top: 16px;
    right: 16px;
    z-index: 30;
    max-width: 290px;
    padding: 12px 16px;
    color: white;
    background: linear-gradient(135deg, #1769aa, #49a9df);
    border: 2px solid white;
    box-shadow: 3px 4px 0 rgba(20, 72, 112, 0.3);
    font: bold 13px Tahoma, sans-serif;
    animation: achievement-pop 0.25s ease-out;
}

.party-mode .achievement-toast {
    background: linear-gradient(135deg, #ed5a24, #ff4f9a);
}

.theme-gold .achievement-toast {
    background: linear-gradient(135deg, #16736f, #c99b25);
}

@keyframes achievement-pop {
    from { transform: translateY(-12px) scale(0.94); opacity: 0; }
    to { transform: translateY(0) scale(1); opacity: 1; }
}

/* The home page is a small, deliberately busy desktop instead of a landing page. */
.desktop-shell {
    width: min(1080px, calc(100% - 28px));
    min-height: 520px;
    margin: 28px auto;
    padding: 18px;
    background: linear-gradient(135deg, rgba(31, 133, 193, 0.92), rgba(104, 190, 225, 0.88));
    border: 3px solid white;
    box-shadow: inset 0 0 0 2px #4a8cb5, 5px 6px 0 rgba(28, 74, 108, 0.28);
    text-align: left;
}

.party-mode .desktop-shell {
    background: linear-gradient(135deg, #f06d31, #ff80a9 55%, #ffb347);
    box-shadow: inset 0 0 0 2px #d94b72, 5px 6px 0 rgba(120, 44, 60, 0.28);
}

.theme-gold .desktop-shell {
    background: linear-gradient(135deg, #167774, #62af83 55%, #d5b538);
    box-shadow: inset 0 0 0 2px #b18421, 5px 6px 0 rgba(31, 82, 62, 0.28);
}

.desktop-label {
    margin: 0 0 14px 4px;
    color: white;
    font: bold 12px Tahoma, sans-serif;
    text-shadow: 1px 1px #13567e;
}

.desktop-grid {
    display: grid;
    grid-template-columns: minmax(0, 1.35fr) minmax(240px, 0.65fr);
    gap: 16px;
}

.desktop-window {
    overflow: hidden;
    background: rgba(239, 249, 255, 0.94);
    border: 1px solid #0e558a;
    box-shadow: 3px 4px 0 rgba(17, 68, 102, 0.25);
}

.desktop-window h2 {
    margin: 0;
    padding: 7px 10px;
    color: white;
    background: linear-gradient(#388ac2, #12558f);
    font-size: 15px;
    text-shadow: 1px 1px #124d7c;
}

.party-mode .desktop-window h2 {
    background: linear-gradient(#f56c70, #c52f62);
}

.theme-gold .desktop-window h2,
.theme-gold .secret-window h2 {
    background: linear-gradient(#278d80, #12615e);
}

.window-body {
    padding: 14px;
    color: #16314d;
}

.window-body p { margin: 0 0 10px; }

.desktop-icons {
    display: flex;
    flex-wrap: wrap;
    gap: 14px;
    margin: 12px 0 16px;
}

.desktop-icon {
    display: grid;
    width: 82px;
    min-height: 74px;
    place-items: center;
    padding: 5px;
    color: #16314d;
    background: transparent;
    border: 1px dotted transparent;
    text-decoration: none;
    text-align: center;
    font: 12px Tahoma, sans-serif;
}

.desktop-icon:hover {
    background: rgba(188, 231, 250, 0.72);
    border-color: #1769aa;
}

.desktop-icon span:first-child { font-size: 27px; }

.achievement-list {
    display: grid;
    gap: 7px;
    max-height: 270px;
    overflow: auto;
}

.achievement-row {
    padding: 7px 8px;
    background: #e3f2fb;
    border: 1px solid #acd1e5;
    font-size: 12px;
}

.achievement-row.unlocked {
    color: #124d7c;
    background: #fff7bf;
    border-color: #e2bc42;
    font-weight: bold;
}

.party-mode .achievement-row.unlocked {
    color: #a31f58;
    background: #ffe0ec;
    border-color: #ed6d88;
}

.theme-gold .achievement-row.unlocked {
    color: #155b57;
    background: #fff1a8;
    border-color: #c99b25;
}

.desktop-button {
    padding: 7px 12px;
    color: #123f65;
    background: linear-gradient(#fff, #b8def2);
    border: 1px solid #4b87b3;
    font: bold 12px Tahoma, sans-serif;
    cursor: pointer;
}

.desktop-button:hover { filter: brightness(1.06); }

.party-mode .desktop-button {
    color: #6e1744;
    background: linear-gradient(#fff5fa, #ff9ec2);
    border-color: #d94b72;
}

.theme-gold .desktop-button {
    color: #17494a;
    background: linear-gradient(#fffef0, #d9dc8d);
    border-color: #b18421;
}

.achievement-section-title {
    padding: 9px 4px 3px;
    color: #d05b22;
    font: bold 11px Tahoma, sans-serif;
}

.secret-menu {
    position: fixed;
    inset: 0;
    z-index: 40;
    display: grid;
    place-items: center;
    padding: 20px;
    background: rgba(11, 44, 72, 0.48);
}

.secret-window {
    width: min(430px, 100%);
    padding: 16px;
    color: #16314d;
    background: #eff9ff;
    border: 2px solid #1769aa;
    box-shadow: 5px 6px 0 rgba(17, 68, 102, 0.35);
    text-align: left;
}

.secret-window h2 {
    margin: -16px -16px 14px;
    padding: 8px 12px;
    color: white;
    background: linear-gradient(#388ac2, #12558f);
    font-size: 15px;
}

.secret-window code {
    display: block;
    margin: 14px 0;
    padding: 12px;
    color: #124d7c;
    background: #fff7bf;
    border: 1px dashed #d2a72c;
    font: bold 18px "Courier New", monospace;
    letter-spacing: 2px;
    text-align: center;
}

.secret-window input {
    width: 100%;
    margin: 8px 0;
    padding: 9px;
    border: 1px solid #4b87b3;
    font: 14px "Courier New", monospace;
}

.party-mode .secret-window h2 {
    background: linear-gradient(#f56c70, #c52f62);
}

.party-mode .achievement-section-title { color: #c52f62; }

.theme-gold .achievement-section-title { color: #967018; }

body.theme-orange .messenger {
    background: #fff5f9;
    border-color: #d94b72;
    box-shadow: 4px 5px 0 rgba(120, 44, 60, 0.25);
}

body.theme-orange .messenger .titlebar {
    background: linear-gradient(#f56c70, #c52f62);
}

body.theme-orange .messenger .status {
    background: #ffe0ec;
    border-color: #ed6d88;
}

body.theme-orange .messenger .chat {
    background: #fffafd;
    border-color: #e3a0b5;
}

body.theme-orange .messenger input,
body.theme-orange .messenger button {
    border-color: #d94b72;
}

body.theme-orange .messenger button {
    color: #6e1744;
    background: linear-gradient(#fff5fa, #ff9ec2);
}

body.theme-orange .messenger .return { color: #a31f58; }

body.theme-gold .messenger {
    background: #f8fbe5;
    color: #17494a;
    border-color: #b18421;
    box-shadow: 4px 5px 0 rgba(31, 82, 62, 0.25);
}

body.theme-gold .messenger .titlebar {
    background: linear-gradient(#278d80, #12615e);
}

body.theme-gold .messenger .status {
    background: #e4edb1;
    border-color: #a8bf78;
}

body.theme-gold .messenger .chat {
    background: #fffef0;
    border-color: #a8b77f;
}

body.theme-gold .messenger input,
body.theme-gold .messenger button {
    border-color: #b18421;
}

body.theme-gold .messenger button {
    color: #17494a;
    background: linear-gradient(#fffef0, #d9dc8d);
}

body.theme-gold .messenger .return { color: #155b57; }

#theme-menu-button {
    display: block;
    margin-top: 7px;
    padding: 4px 8px;
    color: inherit;
    background: rgba(255, 255, 255, 0.65);
    border: 1px solid currentColor;
    font: bold 11px Tahoma, sans-serif;
    cursor: pointer;
}

.theme-menu {
    position: fixed;
    inset: 0;
    z-index: 40;
    display: grid;
    place-items: center;
    padding: 20px;
    background: rgba(11, 44, 72, 0.48);
}

.theme-window {
    width: min(360px, 100%);
    padding: 16px;
    color: #16314d;
    background: #eff9ff;
    border: 2px solid #1769aa;
    box-shadow: 5px 6px 0 rgba(17, 68, 102, 0.35);
    text-align: left;
}

.theme-window h2 {
    margin: -16px -16px 14px;
    padding: 8px 12px;
    color: white;
    background: linear-gradient(#388ac2, #12558f);
    font-size: 15px;
}

.theme-window button {
    display: block;
    width: 100%;
    margin: 8px 0;
    padding: 9px;
    color: #123f65;
    background: linear-gradient(#fff, #b8def2);
    border: 1px solid #4b87b3;
    font: bold 12px Tahoma, sans-serif;
    cursor: pointer;
}

.theme-window button:disabled {
    color: #788b96;
    background: #dce7ec;
    cursor: not-allowed;
}


@media (max-width: 720px) {
    .desktop-grid { grid-template-columns: 1fr; }
    .desktop-shell { min-height: 0; }
}