/* ==========================================================================
   信枢软件中心 · 设计系统（基础层）
   支持亮色 / 暗色、响应式、动效降级
   ========================================================================== */

:root {
    color-scheme: light;

    --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", Roboto, Helvetica, Arial, sans-serif;
    --font-mono: "SFMono-Regular", Consolas, "Cascadia Code", "Liberation Mono", Menlo, monospace;

    --bg: #f5f6fb;
    --bg-elevated: #ffffff;
    --bg-soft: #eef1f8;
    --bg-glass: rgba(255, 255, 255, 0.72);
    --bg-inverse: #0b1120;

    --text: #0f172a;
    --text-2: #566079;
    --text-3: #8a94a8;
    --text-inverse: #f7f9ff;

    --border: rgba(15, 23, 42, 0.08);
    --border-strong: rgba(15, 23, 42, 0.16);

    --accent: #5b5bf0;
    --accent-2: #8b5cf6;
    --accent-3: #22d3ee;
    --accent-soft: rgba(91, 91, 240, 0.1);
    --accent-contrast: #ffffff;

    --success: #10b981;
    --success-soft: rgba(16, 185, 129, 0.12);
    --warning: #f59e0b;
    --warning-soft: rgba(245, 158, 11, 0.14);
    --danger: #ef4444;
    --danger-soft: rgba(239, 68, 68, 0.12);
    --info: #3b82f6;

    --plate: #f8fafc;

    --shadow-sm: 0 1px 2px rgba(15, 23, 42, 0.06), 0 1px 3px rgba(15, 23, 42, 0.04);
    --shadow-md: 0 12px 30px -12px rgba(15, 23, 42, 0.18), 0 4px 10px -6px rgba(15, 23, 42, 0.08);
    --shadow-lg: 0 32px 64px -28px rgba(15, 23, 42, 0.32), 0 12px 24px -16px rgba(15, 23, 42, 0.16);
    --glow: 0 0 0 1px rgba(91, 91, 240, 0.18), 0 18px 40px -18px rgba(91, 91, 240, 0.45);

    --radius-xs: 8px;
    --radius-sm: 10px;
    --radius: 14px;
    --radius-lg: 20px;
    --radius-xl: 28px;

    --ease: cubic-bezier(0.22, 1, 0.36, 1);
    --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
    --dur: 0.32s;

    --header-h: 68px;
    --maxw: 1240px;
}

html[data-theme="dark"] {
    color-scheme: dark;

    --bg: #070b14;
    --bg-elevated: #101827;
    --bg-soft: #162034;
    --bg-glass: rgba(12, 18, 32, 0.72);
    --bg-inverse: #f7f9ff;

    --text: #e9eef9;
    --text-2: #9aa7c0;
    --text-3: #6d7a94;
    --text-inverse: #0b1120;

    --border: rgba(255, 255, 255, 0.08);
    --border-strong: rgba(255, 255, 255, 0.16);

    --accent: #7d7dff;
    --accent-2: #a78bfa;
    --accent-3: #38e1f5;
    --accent-soft: rgba(125, 125, 255, 0.16);
    --accent-contrast: #0b1120;

    --success: #34d399;
    --success-soft: rgba(52, 211, 153, 0.14);
    --warning: #fbbf24;
    --warning-soft: rgba(251, 191, 36, 0.14);
    --danger: #f87171;
    --danger-soft: rgba(248, 113, 113, 0.14);

    --plate: #0c1424;

    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.4);
    --shadow-md: 0 16px 34px -16px rgba(0, 0, 0, 0.7);
    --shadow-lg: 0 40px 80px -40px rgba(0, 0, 0, 0.9);
    --glow: 0 0 0 1px rgba(125, 125, 255, 0.24), 0 24px 60px -24px rgba(125, 125, 255, 0.5);
}

/* ------------------------------ reset ---------------------------------- */

*,
*::before,
*::after {
    box-sizing: border-box;
}

* {
    margin: 0;
    padding: 0;
}

html {
    -webkit-text-size-adjust: 100%;
    scroll-behavior: smooth;
}

body {
    min-height: 100vh;
    font-family: var(--font-sans);
    font-size: 15px;
    line-height: 1.6;
    color: var(--text);
    background: var(--bg);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeLegibility;
    overflow-x: hidden;
}

img,
svg,
video {
    display: block;
    max-width: 100%;
}

a {
    color: inherit;
    text-decoration: none;
}

button,
input,
select,
textarea {
    font: inherit;
    color: inherit;
}

button {
    background: none;
    border: 0;
    cursor: pointer;
}

ul,
ol {
    list-style: none;
}

code,
kbd,
pre {
    font-family: var(--font-mono);
}

::selection {
    background: var(--accent);
    color: var(--accent-contrast);
}

:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 3px;
    border-radius: 6px;
}

/* 滚动条 */
::-webkit-scrollbar {
    width: 10px;
    height: 10px;
}

::-webkit-scrollbar-track {
    background: transparent;
}

::-webkit-scrollbar-thumb {
    background: var(--border-strong);
    border-radius: 999px;
    border: 2px solid transparent;
    background-clip: padding-box;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--text-3);
    background-clip: padding-box;
}

/* ------------------------------ 排版 ---------------------------------- */

h1, h2, h3, h4, h5 {
    font-weight: 700;
    line-height: 1.22;
    letter-spacing: -0.02em;
    color: var(--text);
}

h1 { font-size: clamp(2rem, 4.6vw, 3.6rem); }
h2 { font-size: clamp(1.45rem, 2.6vw, 2rem); }
h3 { font-size: 1.15rem; }
h4 { font-size: 1rem; }

p { color: var(--text-2); }

small { font-size: 0.8rem; }

.muted { color: var(--text-2); }
.dim { color: var(--text-3); }
.mono { font-family: var(--font-mono); }
.gradient-text {
    background: linear-gradient(100deg, var(--accent) 0%, var(--accent-2) 48%, var(--accent-3) 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    color: transparent;
}

/* ------------------------------ 按钮 ---------------------------------- */

.btn {
    --btn-bg: var(--accent);
    --btn-fg: var(--accent-contrast);
    position: relative;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 10px 18px;
    border-radius: var(--radius-sm);
    border: 1px solid transparent;
    background: var(--btn-bg);
    color: var(--btn-fg);
    font-size: 0.9rem;
    font-weight: 600;
    line-height: 1.2;
    white-space: nowrap;
    cursor: pointer;
    transition: transform var(--dur) var(--ease), box-shadow var(--dur) var(--ease), background var(--dur) var(--ease), border-color var(--dur) var(--ease), color var(--dur) var(--ease);
    overflow: hidden;
    isolation: isolate;
}

.btn::after {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(120deg, transparent 20%, rgba(255, 255, 255, 0.35) 50%, transparent 80%);
    transform: translateX(-120%);
    transition: transform 0.7s var(--ease);
    z-index: -1;
}

.btn:hover::after {
    transform: translateX(120%);
}

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

.btn:active {
    transform: translateY(0) scale(0.985);
}

.btn:disabled,
.btn.is-disabled {
    opacity: 0.55;
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
}

.btn-primary {
    background: linear-gradient(120deg, var(--accent) 0%, var(--accent-2) 100%);
    color: #fff;
    box-shadow: 0 10px 24px -12px rgba(91, 91, 240, 0.7);
}

.btn-outline {
    background: transparent;
    border-color: var(--border-strong);
    color: var(--text);
}

.btn-outline:hover {
    border-color: var(--accent);
    color: var(--accent);
    box-shadow: none;
}

.btn-ghost {
    background: transparent;
    color: var(--text-2);
}

.btn-ghost:hover {
    background: var(--accent-soft);
    color: var(--accent);
    box-shadow: none;
}

.btn-soft {
    background: var(--accent-soft);
    color: var(--accent);
}

.btn-soft:hover {
    background: color-mix(in srgb, var(--accent) 18%, transparent);
}

.btn-danger {
    background: linear-gradient(120deg, var(--danger) 0%, #f87171 100%);
    color: #fff;
}

.btn-success {
    background: linear-gradient(120deg, var(--success) 0%, #34d399 100%);
    color: #04231a;
}

.btn-sm {
    padding: 7px 12px;
    font-size: 0.8rem;
    border-radius: var(--radius-xs);
}

.btn-lg {
    padding: 14px 26px;
    font-size: 1rem;
    border-radius: var(--radius);
}

.btn-block { width: 100%; }

.btn-icon {
    padding: 9px;
    width: 36px;
    height: 36px;
}

.icon-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 38px;
    height: 38px;
    border-radius: 50%;
    color: var(--text-2);
    background: transparent;
    border: 1px solid transparent;
    transition: all var(--dur) var(--ease);
}

.icon-btn:hover {
    background: var(--accent-soft);
    color: var(--accent);
    transform: translateY(-1px);
}

.icon-btn svg { width: 19px; height: 19px; }

/* ------------------------------ 标签 / 徽章 ---------------------------- */

.chip {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 5px 11px;
    border-radius: 999px;
    border: 1px solid var(--border);
    background: var(--bg-elevated);
    color: var(--text-2);
    font-size: 0.76rem;
    font-weight: 500;
    line-height: 1.3;
    white-space: nowrap;
    transition: all 0.2s var(--ease);
}

.chip svg { width: 13px; height: 13px; }

.chip-accent {
    background: var(--accent-soft);
    border-color: transparent;
    color: var(--accent);
}

.chip-success { background: var(--success-soft); border-color: transparent; color: var(--success); }
.chip-warning { background: var(--warning-soft); border-color: transparent; color: #b45309; }
html[data-theme="dark"] .chip-warning { color: var(--warning); }
.chip-danger { background: var(--danger-soft); border-color: transparent; color: var(--danger); }
.chip-plain { background: transparent; }

.badge {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    padding: 3px 9px;
    border-radius: 999px;
    font-size: 0.72rem;
    font-weight: 600;
    letter-spacing: 0.01em;
    background: var(--accent-soft);
    color: var(--accent);
}

.badge-success { background: var(--success-soft); color: var(--success); }
.badge-warning { background: var(--warning-soft); color: #b45309; }
html[data-theme="dark"] .badge-warning { color: var(--warning); }
.badge-danger { background: var(--danger-soft); color: var(--danger); }
.badge-neutral { background: var(--bg-soft); color: var(--text-2); }

.tag {
    display: inline-flex;
    padding: 2px 8px;
    border-radius: 6px;
    background: var(--bg-soft);
    color: var(--text-2);
    font-size: 0.72rem;
    font-family: var(--font-mono);
}

.dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: currentColor;
    box-shadow: 0 0 0 3px color-mix(in srgb, currentColor 18%, transparent);
}

/* ------------------------------ 卡片 / 面板 ---------------------------- */

.card {
    background: var(--bg-elevated);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    box-shadow: var(--shadow-sm);
    transition: border-color var(--dur) var(--ease), box-shadow var(--dur) var(--ease), transform var(--dur) var(--ease);
}

.card-pad { padding: 24px; }

.panel {
    background: var(--bg-elevated);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    box-shadow: var(--shadow-sm);
    overflow: hidden;
}

.panel-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    padding: 16px 20px;
    border-bottom: 1px solid var(--border);
}

.panel-head h3 {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 0.98rem;
}

.panel-head h3::before {
    content: "";
    width: 4px;
    height: 16px;
    border-radius: 2px;
    background: linear-gradient(180deg, var(--accent), var(--accent-2));
}

.panel-body { padding: 20px; }

/* ------------------------------ 表单 ---------------------------------- */

.field { margin-bottom: 18px; }

.field > label,
.field-label {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 8px;
    font-size: 0.84rem;
    font-weight: 600;
    color: var(--text);
}

.field-hint {
    margin-top: 7px;
    font-size: 0.76rem;
    line-height: 1.6;
    color: var(--text-3);
}

.input,
.select,
.textarea {
    width: 100%;
    padding: 11px 14px;
    border: 1px solid var(--border-strong);
    border-radius: var(--radius-sm);
    background: var(--plate);
    color: var(--text);
    font-size: 0.9rem;
    transition: border-color 0.2s var(--ease), box-shadow 0.2s var(--ease), background 0.2s var(--ease);
}

.input::placeholder,
.textarea::placeholder { color: var(--text-3); }

.input:focus,
.select:focus,
.textarea:focus {
    outline: none;
    border-color: var(--accent);
    background: var(--bg-elevated);
    box-shadow: 0 0 0 4px var(--accent-soft);
}

.textarea { min-height: 96px; resize: vertical; line-height: 1.65; }
.select { appearance: none; padding-right: 36px; background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%238a94a8' stroke-width='2.5'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E"); background-repeat: no-repeat; background-position: right 14px center; }

.check {
    display: inline-flex;
    align-items: flex-start;
    gap: 10px;
    cursor: pointer;
    user-select: none;
    font-size: 0.88rem;
}

.check input[type="checkbox"],
.check input[type="radio"] {
    width: 18px;
    height: 18px;
    margin-top: 1px;
    accent-color: var(--accent);
    cursor: pointer;
    flex-shrink: 0;
}

.check small { display: block; color: var(--text-3); font-size: 0.76rem; margin-top: 2px; }

/* switch */
.switch {
    position: relative;
    display: inline-flex;
    align-items: center;
    width: 44px;
    height: 24px;
    border-radius: 999px;
    background: var(--border-strong);
    transition: background 0.25s var(--ease);
    flex-shrink: 0;
}

.switch::after {
    content: "";
    position: absolute;
    left: 3px;
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background: #fff;
    box-shadow: 0 1px 4px rgba(0, 0, 0, 0.25);
    transition: transform 0.25s var(--ease);
}

.switch.is-on { background: var(--accent); }
.switch.is-on::after { transform: translateX(20px); }

/* ------------------------------ 表格 ---------------------------------- */

.table-wrap {
    width: 100%;
    overflow-x: auto;
    border-radius: var(--radius-sm);
}

table.table,
.card table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.86rem;
}

table.table th,
.card table th {
    padding: 12px 16px;
    text-align: left;
    font-size: 0.74rem;
    font-weight: 600;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    color: var(--text-3);
    background: var(--plate);
    border-bottom: 1px solid var(--border);
    white-space: nowrap;
}

table.table td,
.card table td {
    padding: 14px 16px;
    border-bottom: 1px solid var(--border);
    color: var(--text-2);
    vertical-align: middle;
}

table.table tbody tr,
.card table tbody tr {
    transition: background 0.18s var(--ease);
}

table.table tbody tr:hover,
.card table tbody tr:hover {
    background: color-mix(in srgb, var(--accent) 4%, transparent);
}

table.table tbody tr:last-child td,
.card table tbody tr:last-child td {
    border-bottom: none;
}

.table strong { color: var(--text); font-weight: 600; }

/* ------------------------------ 其他 ---------------------------------- */

.divider {
    height: 1px;
    background: var(--border);
    margin: 22px 0;
    border: 0;
}

.kbd {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 2px 7px;
    border-radius: 6px;
    border: 1px solid var(--border-strong);
    border-bottom-width: 2px;
    background: var(--bg-elevated);
    font-family: var(--font-mono);
    font-size: 0.7rem;
    color: var(--text-2);
}

.empty-state {
    padding: 56px 20px;
    text-align: center;
    color: var(--text-3);
}

.empty-state svg {
    width: 44px;
    height: 44px;
    margin: 0 auto 14px;
    opacity: 0.5;
    stroke: currentColor;
    fill: none;
}

.skeleton {
    position: relative;
    overflow: hidden;
    background: var(--bg-soft);
    border-radius: var(--radius-sm);
}

.skeleton::after {
    content: "";
    position: absolute;
    inset: 0;
    transform: translateX(-100%);
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.25), transparent);
    animation: shimmer 1.4s infinite;
}

html[data-theme="dark"] .skeleton::after {
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.06), transparent);
}

.spinner {
    width: 18px;
    height: 18px;
    border-radius: 50%;
    border: 2px solid color-mix(in srgb, var(--accent) 25%, transparent);
    border-top-color: var(--accent);
    animation: spin 0.8s linear infinite;
    flex-shrink: 0;
}

.progress {
    display: block;
    height: 8px;
    border-radius: 999px;
    background: var(--bg-soft);
    overflow: hidden;
}

.progress > span {
    display: block;
    height: 100%;
    border-radius: inherit;
    background: linear-gradient(90deg, var(--accent), var(--accent-2));
    transition: width 0.5s var(--ease);
}

/* ------------------------------ 品牌 / 背景光斑 ------------------------ */

.brand {
    display: inline-flex;
    align-items: center;
    gap: 11px;
    font-weight: 700;
    font-size: 1.02rem;
    letter-spacing: -0.01em;
    color: var(--text);
    flex-shrink: 0;
}

.brand-mark {
    position: relative;
    width: 36px;
    height: 36px;
    display: grid;
    place-items: center;
    border-radius: 11px;
    background: linear-gradient(135deg, var(--accent) 0%, var(--accent-2) 55%, var(--accent-3) 100%);
    box-shadow: 0 8px 20px -8px color-mix(in srgb, var(--accent) 75%, transparent);
    color: #fff;
    flex-shrink: 0;
}

.brand-mark svg { width: 20px; height: 20px; }

.brand small {
    display: block;
    font-size: 0.64rem;
    font-weight: 600;
    letter-spacing: 0.16em;
    text-transform: uppercase;
    color: var(--text-3);
    margin-top: -2px;
}

.bg-mesh {
    position: fixed;
    inset: 0;
    z-index: 0;
    overflow: hidden;
    pointer-events: none;
}

.bg-mesh .blob {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.5;
    animation: floaty 16s ease-in-out infinite;
}

.bg-mesh .b1 {
    width: 520px;
    height: 520px;
    top: -160px;
    left: -120px;
    background: radial-gradient(circle, color-mix(in srgb, var(--accent) 45%, transparent), transparent 68%);
}

.bg-mesh .b2 {
    width: 460px;
    height: 460px;
    top: 120px;
    right: -160px;
    background: radial-gradient(circle, color-mix(in srgb, var(--accent-3) 38%, transparent), transparent 68%);
    animation-delay: -6s;
}

.bg-mesh .b3 {
    width: 380px;
    height: 380px;
    bottom: -160px;
    left: 38%;
    background: radial-gradient(circle, color-mix(in srgb, var(--accent-2) 34%, transparent), transparent 68%);
    animation-delay: -11s;
}

html[data-theme="dark"] .bg-mesh .blob { opacity: 0.3; }

/* ------------------------------ 通用动效 ------------------------------- */

@keyframes spin { to { transform: rotate(360deg); } }

@keyframes shimmer { 100% { transform: translateX(100%); } }

@keyframes fadeUp {
    from { opacity: 0; transform: translateY(18px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes floaty {
    0%, 100% { transform: translateY(0) rotate(0deg); }
    50% { transform: translateY(-14px) rotate(1.5deg); }
}

@keyframes pulseRing {
    0% { box-shadow: 0 0 0 0 color-mix(in srgb, var(--accent) 40%, transparent); }
    70% { box-shadow: 0 0 0 12px transparent; }
    100% { box-shadow: 0 0 0 0 transparent; }
}

@keyframes gradientPan {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}

@keyframes marquee {
    from { transform: translateX(0); }
    to { transform: translateX(-50%); }
}

/* 滚动进入视口 */
.reveal {
    opacity: 0;
    transform: translateY(22px);
    transition: opacity 0.7s var(--ease-out), transform 0.7s var(--ease-out);
    transition-delay: var(--reveal-delay, 0ms);
    will-change: opacity, transform;
}

.reveal.is-in {
    opacity: 1;
    transform: none;
}

.stagger > * {
    opacity: 0;
    transform: translateY(16px);
    transition: opacity 0.6s var(--ease-out), transform 0.6s var(--ease-out);
}

.stagger.is-in > * {
    opacity: 1;
    transform: none;
}

.stagger.is-in > *:nth-child(1) { transition-delay: 0.02s; }
.stagger.is-in > *:nth-child(2) { transition-delay: 0.07s; }
.stagger.is-in > *:nth-child(3) { transition-delay: 0.12s; }
.stagger.is-in > *:nth-child(4) { transition-delay: 0.17s; }
.stagger.is-in > *:nth-child(5) { transition-delay: 0.22s; }
.stagger.is-in > *:nth-child(6) { transition-delay: 0.27s; }
.stagger.is-in > *:nth-child(7) { transition-delay: 0.32s; }
.stagger.is-in > *:nth-child(8) { transition-delay: 0.37s; }

/* ------------------------------ 响应式 / 动效偏好 ---------------------- */

@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.001ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.001ms !important;
        scroll-behavior: auto !important;
    }
}

html[data-motion="off"] *,
html[data-motion="off"] *::before,
html[data-motion="off"] *::after {
    animation-duration: 0.001ms !important;
    transition-duration: 0.001ms !important;
}

/* 视图切换动画（后台 iframe 内页面） */
.page-enter {
    animation: fadeUp 0.5s var(--ease-out) both;
}