:root {
    --page-bg: #f6f7f8;
    --surface: #ffffff;
    --text-primary: #111827;
    --text-muted: #6b7280;
    --line-color: #e5e7eb;
    --accent: #2563eb;
    --accent-hover: #1d4ed8;
    --success-bg: #ecfdf5;
    --success-line: #bbf7d0;
    --error-bg: #fef2f2;
    --error-line: #fecaca;
    --warning-bg: #fffbeb;
    --warning-line: #fde68a;
    --info-bg: #eff6ff;
    --info-line: #bfdbfe;
}

* {
    box-sizing: border-box;
}

body {
    background:
        radial-gradient(circle at top, rgba(255, 255, 255, 0.95), rgba(246, 247, 248, 0.95) 48%),
        var(--page-bg);
    color: var(--text-primary);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.navbar-clean {
    background-color: rgba(255, 255, 255, 0.92) !important;
    backdrop-filter: blur(14px);
    border-bottom: 1px solid rgba(229, 231, 235, 0.92);
}

.navbar-clean .navbar-brand {
    color: var(--text-primary);
}

.bi {
    line-height: 1;
    vertical-align: -0.125em;
}

.page-shell {
    margin-top: 5rem;
    padding-bottom: 3rem;
    flex: 1 0 auto;
}

.card {
    background: rgba(255, 255, 255, 0.96);
    border: 1px solid rgba(229, 231, 235, 0.88) !important;
    box-shadow: 0 18px 44px rgba(17, 24, 39, 0.06) !important;
}

.card-header {
    background: transparent !important;
    border-bottom-color: var(--line-color) !important;
}

.card-header-tools {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 1rem;
}

.card-header-tools h1 {
    flex: 1 1 auto;
    min-width: 0;
}

.card-header-tools .btn {
    flex: 0 0 auto;
    white-space: nowrap;
}

.section-box {
    border: 1px solid var(--line-color);
    border-radius: 14px;
    background: var(--surface);
    padding: 1rem;
    height: 100%;
}

.section-box p,
.section-box li,
.step-item p,
.muted-copy,
.note-copy,
.preset-meta {
    color: var(--text-muted);
}

.btn-outline-secondary,
.form-select,
.form-control,
.list-group-item,
.form-check-input,
.input-group-text {
    border-color: #d1d5db;
}

.btn-outline-secondary {
    color: var(--text-primary);
    background: #fff;
}

.btn-outline-secondary:hover {
    color: var(--text-primary);
    background: #f3f4f6;
    border-color: #c7cdd4;
}

.btn-dark,
.action-btn {
    background-color: var(--accent) !important;
    border-color: var(--accent) !important;
    color: #fff !important;
    box-shadow: 0 10px 24px rgba(37, 99, 235, 0.24);
}

.btn-dark:hover,
.action-btn:hover,
.btn-dark:focus,
.action-btn:focus {
    background-color: var(--accent-hover) !important;
    border-color: var(--accent-hover) !important;
    color: #fff !important;
}

.tool-textarea {
    padding-bottom: 2.4rem;
    resize: vertical;
    font-family: Consolas, Monaco, monospace;
    font-size: 0.92rem;
    line-height: 1.6;
}

.input-head,
.input-meta-row {
    display: flex;
    justify-content: space-between;
    gap: 0.75rem 1rem;
}

.input-head {
    align-items: flex-start;
    flex-wrap: wrap;
}

.input-meta-row {
    align-items: center;
    flex-wrap: nowrap;
}

.input-meta-row .form-text {
    flex: 1 1 auto;
    min-width: 0;
    margin-bottom: 0;
}

.textarea-quick-actions {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    flex-wrap: wrap;
    gap: 0.35rem 0.75rem;
    margin-left: auto;
}

.tool-link-btn,
.textarea-clear {
    border: 0;
    background: transparent;
    color: var(--bs-link-color);
    font-size: 0.82rem;
    line-height: 1.4;
    padding: 0;
    white-space: nowrap;
}

.tool-link-btn:hover,
.tool-link-btn:focus,
.textarea-clear:hover,
.textarea-clear:focus {
    color: var(--bs-link-hover-color);
}

.tool-link-btn:disabled,
.tool-link-btn.is-disabled {
    opacity: 0.48;
    pointer-events: none;
}

.textarea-wrap {
    position: relative;
}

.textarea-clear {
    position: absolute;
    right: 0.9rem;
    bottom: 0.75rem;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.18s ease;
}

.textarea-clear.is-visible {
    opacity: 1;
    pointer-events: auto;
}

.inline-options {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 0.65rem 0.9rem;
}

.inline-options .form-check {
    margin-bottom: 0;
}

.tool-actions {
    display: grid;
    gap: 0.75rem;
}

.tool-actions-primary {
    grid-template-columns: repeat(3, minmax(0, 1fr));
}

.tool-actions-secondary {
    grid-template-columns: repeat(4, minmax(0, 1fr));
}

.action-strip {
    grid-template-columns: minmax(0, 1fr) auto auto;
    align-items: center;
}

.action-strip .btn {
    min-height: 44px;
}

.tool-actions .btn {
    width: 100%;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 0.75rem;
}

.stat-box {
    border: 1px solid var(--line-color);
    border-radius: 14px;
    background: var(--surface);
    padding: 0.85rem 0.75rem;
    text-align: center;
}

.stat-label {
    color: var(--text-muted);
    font-size: 0.82rem;
}

.stat-value {
    margin-top: 0.28rem;
    font-weight: 700;
    font-size: 1.2rem;
    line-height: 1.2;
}

.progress-track {
    height: 14px;
    border-radius: 999px;
    overflow: hidden;
    background: linear-gradient(90deg, #eceff3 0%, #e5e7eb 100%);
}

.progress-bar-clean {
    height: 100%;
    width: 0;
    background-image: linear-gradient(90deg, #2563eb 0%, #3b82f6 100%);
    transition: width 0.25s ease;
}

.progress-hint {
    font-size: 0.88rem;
    color: var(--text-muted);
    line-height: 1.6;
}

.status-box,
.log-box,
.note-box {
    border-radius: 14px;
    padding: 0.85rem 1rem;
}

.note-box {
    border: 1px solid var(--warning-line);
    background: var(--warning-bg);
    color: #92400e;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.75rem;
}

.note-box .btn-close {
    flex: 0 0 auto;
    opacity: 0.58;
    padding: 0;
    margin: 0;
}

.note-box .btn-close:hover,
.note-box .btn-close:focus {
    opacity: 0.82;
}

.status-box {
    border: 1px solid var(--info-line);
    background: var(--info-bg);
}

.status-box.is-error {
    border-color: var(--error-line);
    background: var(--error-bg);
}

.status-box.is-warning {
    border-color: var(--warning-line);
    background: var(--warning-bg);
}

.status-box.is-success {
    border-color: var(--success-line);
    background: var(--success-bg);
}

.status-text {
    color: var(--text-primary);
    font-size: 0.9rem;
    line-height: 1.6;
}

.log-box {
    border: 1px solid var(--line-color);
    background: #fff;
    min-height: 96px;
    max-height: 300px;
    overflow-y: auto;
}

.log-item {
    display: flex;
    gap: 0.7rem;
    align-items: flex-start;
    padding: 0.4rem 0;
    border-bottom: 1px dashed #eef2f7;
    font-size: 0.88rem;
    line-height: 1.5;
}

.log-item:last-child {
    border-bottom: 0;
}

.log-time {
    flex: 0 0 auto;
    color: var(--text-muted);
    font-family: Consolas, Monaco, monospace;
    font-size: 0.8rem;
}

.log-item.is-success .log-message {
    color: #047857;
}

.log-item.is-error .log-message {
    color: #b91c1c;
}

.log-item.is-info .log-message {
    color: var(--text-primary);
}

.mono-copy {
    font-family: Consolas, Monaco, monospace;
    word-break: break-all;
}

.config-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0.75rem;
}

.config-item {
    border: 1px solid var(--line-color);
    border-radius: 12px;
    background: #fff;
    padding: 0.75rem 0.85rem;
}

.config-item .form-check {
    margin-bottom: 0;
    display: flex;
    align-items: center;
    gap: 0.45rem;
}

.config-item .form-check-label {
    min-width: 0;
    margin-right: auto;
}

.config-tip-trigger {
    border: 0;
    background: transparent;
    color: #2563eb;
    font-size: 0.92rem;
    line-height: 1;
    font-weight: 700;
    padding: 0;
    cursor: pointer;
}

.config-tip-trigger:hover,
.config-tip-trigger:focus {
    color: #1d4ed8;
}

.config-fields {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0.75rem;
    margin-top: 0.75rem;
}

.config-summary-line {
    margin-left: auto;
    display: flex;
    align-items: center;
    justify-content: flex-end;
}

.config-summary-badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 1.55rem;
    padding: 0.14rem 0.52rem;
    border: 1px solid #bfdbfe;
    border-radius: 999px;
    background: #eff6ff;
    color: #1d4ed8;
    font-size: 0.7rem;
    font-weight: 600;
    line-height: 1.2;
    white-space: nowrap;
}

.runtime-panel {
    margin-top: 0.25rem;
}

.modal-content {
    border-radius: 16px;
    border: 1px solid rgba(229, 231, 235, 0.88);
    box-shadow: 0 18px 44px rgba(17, 24, 39, 0.12);
}

.modal-header,
.modal-footer {
    border-color: var(--line-color);
}

.modal-header {
    padding: 0.9rem 1rem;
}

.modal-body {
    padding: 1rem;
}

.modal-footer {
    padding: 0.85rem 1rem;
}

.step-item {
    display: flex;
    gap: 0.9rem;
    align-items: flex-start;
}

.step-number {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: var(--accent);
    color: #fff;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 0.9rem;
    font-weight: 700;
    flex: 0 0 32px;
}

.preset-card {
    border: 1px solid var(--line-color);
    border-radius: 14px;
    background: var(--surface);
    padding: 1rem;
    height: 100%;
}

.preset-list {
    margin: 0;
    padding-left: 1rem;
}

.tutorial-chip {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    min-height: 1.7rem;
    padding: 0.18rem 0.62rem;
    border-radius: 999px;
    background: rgba(37, 99, 235, 0.1);
    color: #1d4ed8;
    font-size: 0.8rem;
    font-weight: 600;
}

.guide-card {
    position: relative;
}

.guide-card.is-match {
    border-color: rgba(37, 99, 235, 0.32);
    box-shadow: 0 12px 28px rgba(37, 99, 235, 0.08);
}

.guide-card-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.7rem;
    margin-bottom: 0.85rem;
}

.guide-match-badge {
    display: none;
    align-items: center;
    min-height: 1.65rem;
    padding: 0.14rem 0.58rem;
    border-radius: 999px;
    background: rgba(5, 150, 105, 0.12);
    color: #047857;
    font-size: 0.76rem;
    font-weight: 600;
    white-space: nowrap;
}

.guide-card.is-match .guide-match-badge {
    display: inline-flex;
}

.guide-step-list {
    margin: 0;
    padding-left: 1.1rem;
}

.guide-step-list li + li {
    margin-top: 0.45rem;
}

.site-list a,
.page-link,
.footer-links a,
.friend-link a {
    color: var(--text-primary);
    text-decoration: none;
}

.site-list a:hover,
.page-link:hover,
.footer-links a:hover,
.friend-link a:hover {
    color: var(--text-primary);
}

.list-group-item {
    background: #fff;
}

.list-group-item:hover {
    background: #f9fafb;
}

.card-foot-ad {
    font-size: 0.9rem;
}

.card-foot-ad a {
    color: var(--bs-link-color);
    text-decoration: none;
}

.card-foot-ad a:hover {
    color: var(--bs-link-hover-color);
    text-decoration: underline;
}

.error-wrap {
    width: 100%;
    max-width: 520px;
    padding: 2.2rem 1.8rem;
    background: rgba(255, 255, 255, 0.96);
    border: 1px solid rgba(229, 231, 235, 0.88);
    border-radius: 18px;
    text-align: center;
    box-shadow: 0 18px 44px rgba(17, 24, 39, 0.06);
}

.error-code {
    margin: 0;
    font-size: clamp(56px, 14vw, 88px);
    font-weight: 700;
    line-height: 1;
}

.error-title {
    margin: 1rem 0 0.75rem;
    font-size: 1.6rem;
    font-weight: 700;
}

.error-text {
    color: var(--text-muted);
    line-height: 1.8;
}

@media (max-width: 768px) {
    .stats-grid {
        grid-template-columns: repeat(3, minmax(0, 1fr));
    }

    .card-header-tools {
        gap: 0.75rem;
    }

    .inline-options {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .action-strip {
        grid-template-columns: minmax(0, 1fr) repeat(2, minmax(92px, auto));
    }

    .config-grid,
    .config-fields {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

@media (max-width: 576px) {
    .page-shell {
        margin-top: 4.4rem;
        padding-bottom: 2rem;
    }

    .navbar-clean .navbar-brand {
        font-size: 0.96rem;
    }

    .navbar-clean .btn {
        padding: 0.38rem 0.58rem;
        font-size: 0.78rem;
    }

    .card-header-tools {
        align-items: center;
        gap: 0.55rem;
    }

    .card-header-tools h1 {
        font-size: 1.02rem;
    }

    .card-header-tools .btn {
        padding: 0.4rem 0.62rem;
        font-size: 0.78rem;
    }

    .page-shell .card-body {
        padding: 1rem !important;
    }

    .tool-textarea {
        font-size: 0.88rem;
    }

    .input-head {
        align-items: center;
        flex-wrap: nowrap;
        gap: 0.45rem 0.7rem;
    }

    .textarea-quick-actions {
        flex: 0 0 auto;
        flex-wrap: nowrap;
        justify-content: flex-end;
        gap: 0.3rem 0.55rem;
        width: auto;
    }

    .tool-link-btn,
    .textarea-clear {
        font-size: 0.78rem;
    }

    .input-meta-row {
        align-items: center;
        gap: 0.35rem;
    }

    .input-meta-row .form-text {
        width: auto;
    }

    .input-meta-row .config-summary-line {
        width: auto;
        flex: 0 0 auto;
        justify-content: flex-end;
    }

    .inline-options {
        gap: 0.5rem 0.75rem;
    }

    .inline-options .form-check-label {
        font-size: 0.84rem;
    }

    .tool-actions .btn {
        padding: 0.55rem 0.45rem;
        font-size: 0.82rem;
    }

    .action-strip {
        gap: 0.5rem;
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .action-strip #startBtn {
        grid-column: 1 / -1;
    }

    .stats-grid {
        gap: 0.5rem;
    }

    .stat-box {
        padding: 0.65rem 0.45rem;
        border-radius: 12px;
    }

    .stat-label {
        font-size: 0.72rem;
    }

    .stat-value {
        margin-top: 0.2rem;
        font-size: 1rem;
    }

    .note-box,
    .status-box {
        padding: 0.75rem 0.85rem;
    }

    .note-box {
        align-items: flex-start;
    }

    .status-text,
    .note-box {
        font-size: 0.84rem;
        line-height: 1.55;
    }

    .log-box {
        min-height: 72px;
        max-height: 180px;
        padding: 0.7rem 0.75rem;
    }

    .log-item {
        gap: 0.5rem;
        font-size: 0.82rem;
    }

    .config-item {
        padding: 0.65rem 0.72rem;
    }

    .modal-body,
    .modal-footer,
    .modal-header {
        padding-left: 0.85rem;
        padding-right: 0.85rem;
    }

    .modal-dialog {
        margin: 0.6rem;
    }

    .textarea-clear {
        right: 0.72rem;
        bottom: 0.62rem;
    }
}