:root {
    --bg-light-blue: #eef6ff;
    --grid-line: #d0e3ff;
    --navy-text: #092c5c;
    --steel-blue: #4a90e2;
    --steel-blue-strong: #2f6db8;
    --card-white: rgba(255, 255, 255, 0.84);
    --card-white-solid: #ffffff;
    --muted-text: #5a7b9a;
    --danger: #d64545;
    --success: #2f8f5b;
    --shadow-soft: 0 2px 8px rgba(22, 48, 87, 0.08);
    --shadow-hover: 0 10px 26px rgba(22, 48, 87, 0.14);
    --radius-s: 6px;
    --radius-m: 10px;
    --radius-l: 14px;
    --font-stack: "Avenir Next", "Segoe UI", "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
}

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

body {
    margin: 0;
    padding: 28px 0 100px;
    font-family: var(--font-stack);
    color: var(--navy-text);
    background-color: var(--bg-light-blue);
    background-image:
        linear-gradient(var(--grid-line) 1px, transparent 1px),
        linear-gradient(90deg, var(--grid-line) 1px, transparent 1px);
    background-size: 25px 25px;
    overflow-x: hidden;
}

/* Header */
.header {
    position: relative;
    margin: 0 20px 20px;
    padding: 0 0 14px;
    border-bottom: 2px solid var(--navy-text);
}

.header-date {
    font-size: 12px;
    color: var(--muted-text);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1.4px;
    margin-bottom: 8px;
}

.header-title {
    margin: 0;
    padding-right: 58px;
    font-size: clamp(28px, 6vw, 42px);
    font-weight: 900;
    letter-spacing: 1.4px;
    text-transform: uppercase;
    line-height: 1.06;
}

.header-actions {
    position: absolute;
    right: 0;
    top: 0;
}

.header-gear {
    width: 40px;
    height: 40px;
    border-radius: 4px;
    border: 1px solid var(--grid-line);
    background: rgba(255, 255, 255, 0.9);
    color: var(--navy-text);
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-soft);
    cursor: pointer;
    transition: transform 0.18s ease, box-shadow 0.18s ease, border-color 0.18s ease;
}

.header-gear svg {
    width: 18px;
    height: 18px;
}

.header-gear:hover {
    transform: translateY(-1px);
    border-color: var(--steel-blue);
    box-shadow: var(--shadow-hover);
}

/* Breadcrumb */
.breadcrumb {
    margin: 0 20px 14px;
    color: var(--steel-blue-strong);
    font-size: 13px;
    font-weight: 700;
    letter-spacing: 0.4px;
    cursor: pointer;
    display: none;
}

.breadcrumb:hover {
    text-decoration: underline;
}

/* Cards / list */
.card {
    margin: 0 20px 14px;
    position: relative;
    border-radius: var(--radius-s);
    border: 1px solid var(--grid-line);
    background: var(--card-white);
    backdrop-filter: blur(4px);
    box-shadow: var(--shadow-soft);
    overflow: hidden;
    transition: transform 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
}

.card:hover {
    transform: translateY(-2px);
    border-color: var(--steel-blue);
    background: var(--card-white-solid);
    box-shadow: var(--shadow-hover);
}

.project-item {
    display: flex;
    align-items: center;
    padding: 18px 20px;
    text-decoration: none;
    color: inherit;
    cursor: pointer;
}

.project-icon {
    width: 50px;
    height: 50px;
    flex-shrink: 0;
    margin-right: 16px;
    border-radius: var(--radius-s);
    border: 1px solid var(--grid-line);
    background: var(--card-white-solid);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--steel-blue);
    font-size: 24px;
    box-shadow: 0 1px 0 rgba(255, 255, 255, 0.7) inset;
}

.project-info {
    flex: 1;
    min-width: 0;
}

.project-name {
    margin-bottom: 4px;
    font-size: 17px;
    font-weight: 800;
    letter-spacing: 0.2px;
    color: var(--navy-text);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.project-desc {
    font-size: 14px;
    color: var(--muted-text);
    line-height: 1.42;
}

.project-meta {
    margin-top: 6px;
    font-size: 12px;
    color: var(--muted-text);
    letter-spacing: 0.15px;
}

/* Upload CTA */
.upload-cta {
    margin: 8px 20px 18px;
    padding: 18px;
    border-radius: var(--radius-s);
    border: 2px dashed var(--steel-blue);
    background: var(--card-white);
    backdrop-filter: blur(4px);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 14px;
}

.upload-cta-text {
    font-size: 13px;
    color: var(--muted-text);
    line-height: 1.38;
}

.upload-cta-text strong {
    display: block;
    margin-bottom: 2px;
    font-size: 15px;
    font-weight: 800;
    color: var(--navy-text);
    letter-spacing: 0.2px;
}

.upload-cta-actions {
    display: flex;
    justify-content: flex-end;
    align-items: center;
    gap: 8px;
    flex-wrap: wrap;
}

.upload-cta-btn {
    border: 1px solid var(--navy-text);
    border-radius: 4px;
    padding: 10px 12px;
    min-height: 40px;
    background: var(--navy-text);
    color: #ffffff;
    font-size: 12px;
    font-weight: 700;
    letter-spacing: 0.6px;
    text-transform: uppercase;
    cursor: pointer;
    white-space: nowrap;
    transition: opacity 0.16s ease, transform 0.16s ease;
}

.upload-cta-btn:hover {
    opacity: 0.88;
}

.upload-cta-btn:active {
    transform: translateY(1px);
}

.upload-cta-btn.upload-cta-btn-secondary {
    background: transparent;
    color: var(--navy-text);
}

.upload-cta-btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
}

.versions-load-more {
    margin: 0 20px 18px;
    display: flex;
    justify-content: center;
}

/* Admin badge and row actions */
.admin-badge {
    display: none;
    margin-left: 10px;
    padding: 3px 8px;
    border-radius: 999px;
    background: #006bff;
    color: #ffffff;
    font-size: 10px;
    font-weight: 800;
    letter-spacing: 0.5px;
    vertical-align: middle;
}

.edit-btn,
.delete-btn,
.download-btn {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 30px;
    height: 30px;
    border-radius: 4px;
    border: 1px solid transparent;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.18s ease, transform 0.18s ease, border-color 0.18s ease;
    font-size: 13px;
    font-weight: 800;
    cursor: pointer;
}

.download-btn {
    right: 100px;
    color: #fff;
    border-color: var(--navy-text);
    background: var(--navy-text);
}

.edit-btn {
    right: 60px;
    color: var(--navy-text);
    border-color: var(--navy-text);
    background: rgba(255, 255, 255, 0.85);
    font-size: 10px;
    letter-spacing: -0.2px;
}

.delete-btn {
    right: 20px;
    color: #fff;
    border-color: var(--danger);
    background: var(--danger);
}

.version-card .project-item {
    padding-right: 150px;
}

.version-card .project-icon {
    color: #fff;
    border-color: rgba(255, 255, 255, 0.65);
}

.card:hover .delete-btn,
.card:hover .edit-btn,
.card:hover .download-btn,
body.is-admin .delete-btn,
body.is-admin .edit-btn,
body.is-admin .download-btn {
    opacity: 1;
    pointer-events: auto;
}

/* Modal */
.modal-overlay {
    position: fixed;
    inset: 0;
    display: none;
    justify-content: center;
    align-items: center;
    opacity: 0;
    z-index: 200;
    background: rgba(14, 31, 56, 0.42);
    backdrop-filter: blur(4px);
    transition: opacity 0.24s ease;
}

.modal-overlay.active {
    display: flex;
    opacity: 1;
}

.modal-card {
    width: min(88vw, 360px);
    border-radius: var(--radius-m);
    border: 1px solid var(--grid-line);
    background: rgba(255, 255, 255, 0.96);
    box-shadow: 0 20px 50px rgba(14, 31, 56, 0.24);
    padding: 20px;
    position: relative;
    text-align: center;
}

.auth-modal-card,
.settings-modal-card {
    text-align: left;
}

.settings-modal-card {
    width: min(92vw, 430px);
}

.ai-modal-card {
    width: min(92vw, 560px);
    text-align: left;
}

.modal-title {
    margin: 0 0 14px;
    font-size: 17px;
    font-weight: 800;
    color: var(--navy-text);
    letter-spacing: 0.4px;
}

.modal-subtitle {
    margin: -4px 0 14px;
    font-size: 12px;
    color: var(--muted-text);
    line-height: 1.5;
}

.modal-close,
.editor-close {
    width: 28px;
    height: 28px;
    border-radius: 4px;
    border: 1px solid var(--grid-line);
    background: rgba(255, 255, 255, 0.95);
    color: var(--navy-text);
    cursor: pointer;
    font-size: 16px;
    line-height: 24px;
    padding: 0;
}

.modal-close {
    position: absolute;
    top: 10px;
    right: 10px;
}

.ios-input {
    width: 100%;
    margin-bottom: 12px;
    padding: 11px 12px;
    border-radius: var(--radius-s);
    border: 1px solid #b9d0ee;
    background: #f7fbff;
    color: var(--navy-text);
    font-size: 15px;
    outline: none;
}

.ios-textarea {
    width: 100%;
    min-height: 160px;
    margin-bottom: 12px;
    padding: 11px 12px;
    border-radius: var(--radius-s);
    border: 1px solid #b9d0ee;
    background: #f7fbff;
    color: var(--navy-text);
    font-size: 14px;
    line-height: 1.45;
    resize: vertical;
    outline: none;
    font-family: var(--font-stack);
}

.ios-input:focus {
    border-color: var(--steel-blue);
    box-shadow: 0 0 0 3px rgba(74, 144, 226, 0.14);
}

.ios-textarea:focus {
    border-color: var(--steel-blue);
    box-shadow: 0 0 0 3px rgba(74, 144, 226, 0.14);
}

.modal-actions {
    display: flex;
    gap: 8px;
}

.ios-btn,
.install-btn {
    border-radius: 4px;
    font-weight: 700;
    letter-spacing: 0.4px;
    cursor: pointer;
}

.ios-btn {
    flex: 1;
    min-height: 40px;
    border: 1px solid var(--navy-text);
    background: #fff;
    color: var(--navy-text);
    font-size: 14px;
    transition: transform 0.16s ease, box-shadow 0.16s ease, opacity 0.16s ease;
}

.ios-btn:hover {
    transform: translateY(-1px);
    box-shadow: var(--shadow-soft);
}

.btn-primary {
    border-color: var(--steel-blue-strong);
    background: linear-gradient(180deg, #397dcf 0%, #2f6db8 100%);
    color: #fff;
}

.btn-cancel {
    background: rgba(255, 255, 255, 0.9);
    color: var(--navy-text);
}

.btn-danger {
    border-color: var(--danger);
    background: linear-gradient(180deg, #e15a5a 0%, #d64545 100%);
    color: #fff;
}

.install-btn {
    width: 100%;
    margin: 6px 0;
    min-height: 38px;
    padding: 9px 12px;
    border: 1px dashed var(--steel-blue);
    background: rgba(255, 255, 255, 0.9);
    color: var(--steel-blue-strong);
    font-size: 12px;
    text-transform: uppercase;
}

/* Routed preview */
.preview-route-card {
    margin: 0 20px 16px;
    border-radius: var(--radius-s);
    border: 1px solid var(--grid-line);
    background: rgba(255, 255, 255, 0.92);
    box-shadow: var(--shadow-soft);
    overflow: hidden;
}

.preview-route-toolbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 12px;
    padding: 14px 16px;
    border-bottom: 1px solid #d7e7fa;
    background: rgba(241, 248, 255, 0.8);
}

.preview-route-title {
    font-size: 14px;
    font-weight: 800;
    color: var(--navy-text);
}

.preview-route-meta {
    margin-top: 3px;
    font-size: 12px;
    color: var(--muted-text);
}

.preview-route-link {
    flex-shrink: 0;
    border: 1px solid var(--steel-blue);
    border-radius: 4px;
    padding: 7px 10px;
    font-size: 12px;
    font-weight: 700;
    color: var(--steel-blue-strong);
    text-decoration: none;
    background: #fff;
}

.preview-route-link:hover {
    text-decoration: underline;
}

.preview-route-status {
    padding: 10px 16px;
    font-size: 12px;
    color: var(--muted-text);
    border-bottom: 1px solid #e1edf9;
    background: rgba(255, 255, 255, 0.88);
}

.preview-route-status.is-error {
    color: #a73636;
    background: #fff4f4;
    border-bottom-color: #f0c8c8;
}

.preview-route-frame {
    width: 100%;
    height: calc(100vh - 220px);
    border: 0;
    background: #fff;
}

/* Editor modal */
.editor-modal-card {
    width: min(96vw, 1080px);
    max-width: none;
    height: min(90vh, 860px);
    padding: 14px;
    display: flex;
    flex-direction: column;
    text-align: left;
}

.editor-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 10px;
}

.editor-header .modal-title {
    margin: 0;
}

.editor-file-name {
    margin-top: 4px;
    font-size: 12px;
    color: var(--muted-text);
    max-width: 72vw;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

#aceContainer {
    flex: 1;
    min-height: 320px;
    margin-bottom: 12px;
    border-radius: var(--radius-s);
    border: 1px solid #b9d0ee;
    background: #ffffff;
    overflow: hidden;
}

#aceEditor {
    width: 100%;
    height: 100%;
    min-height: 320px;
}

/* Toast */
.toast {
    position: fixed;
    left: 50%;
    top: 18px;
    transform: translateX(-50%) translateY(-18px);
    z-index: 300;
    padding: 9px 16px;
    border-radius: 4px;
    border: 1px solid var(--navy-text);
    background: rgba(26, 54, 93, 0.9);
    color: #fff;
    font-size: 13px;
    font-weight: 700;
    letter-spacing: 0.3px;
    opacity: 0;
    transition: opacity 0.22s ease, transform 0.22s ease;
}

.toast.show {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
}

/* Other */
.empty-state {
    margin: 0 20px;
    padding: 38px 14px;
    text-align: center;
    font-size: 14px;
    color: var(--muted-text);
    border-radius: var(--radius-s);
    border: 1px dashed var(--grid-line);
    background: rgba(255, 255, 255, 0.6);
}

.floating-dock {
    position: fixed;
    left: 50%;
    bottom: 24px;
    transform: translateX(-50%);
    display: flex;
    gap: 10px;
    padding: 8px 12px;
    border-radius: var(--radius-s);
    border: 1px solid var(--grid-line);
    background: rgba(255, 255, 255, 0.82);
    box-shadow: var(--shadow-soft);
    backdrop-filter: blur(4px);
    z-index: 100;
}

.dock-btn {
    width: 34px;
    height: 34px;
    border-radius: 4px;
    border: 1px solid #c4d7f1;
    background: #fff;
    color: var(--navy-text);
    cursor: pointer;
}

.dock-btn svg {
    width: 20px;
    height: 20px;
    stroke: currentColor;
    stroke-width: 2.2;
}

@media (max-width: 768px) {
    body {
        padding-top: 20px;
    }

    .header {
        margin: 0 14px 16px;
    }

    .breadcrumb,
    .card,
    .upload-cta,
    .empty-state {
        margin-left: 14px;
        margin-right: 14px;
    }

    .upload-cta {
        flex-direction: column;
        align-items: stretch;
    }

    .upload-cta-actions {
        justify-content: flex-start;
    }

    .upload-cta-btn {
        flex: 1;
    }

    .preview-route-card {
        margin-left: 14px;
        margin-right: 14px;
    }

    .preview-route-toolbar {
        flex-direction: column;
        align-items: flex-start;
    }

    .preview-route-frame {
        height: calc(100vh - 280px);
    }

    .project-item {
        padding: 16px;
    }

    .project-name {
        font-size: 16px;
    }

    .editor-modal-card {
        width: 96vw;
        height: 92vh;
        padding: 10px;
    }

    .version-card .project-item {
        padding-right: 150px;
    }
}