/* 前台共用：首页 / 登录 / 注册 / 工作台 */

:root {
    --bg0: #0c1222;
    --bg1: #151b2e;
    --surface: rgba(255, 255, 255, 0.06);
    --surface-strong: rgba(255, 255, 255, 0.1);
    --card: rgba(255, 255, 255, 0.92);
    --card-border: rgba(255, 255, 255, 0.45);
    --text: #0f172a;
    --muted: #64748b;
    --accent: #0891b2;
    --accent2: #7c3aed;
    --success: #059669;
    --error: #dc2626;
    --warn: #d97706;
    --radius: 18px;
    --radius-sm: 12px;
    --shadow: 0 22px 50px rgba(15, 23, 42, 0.12), 0 8px 20px rgba(15, 23, 42, 0.06);
    --font: "DM Sans", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Microsoft YaHei", sans-serif;
}

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

body.theme-auth {
    margin: 0;
    min-height: 100vh;
    font-family: var(--font);
    background:
        radial-gradient(1200px 600px at 10% -10%, rgba(124, 58, 237, 0.35), transparent 55%),
        radial-gradient(900px 500px at 100% 0%, rgba(8, 145, 178, 0.4), transparent 50%),
        linear-gradient(165deg, var(--bg0) 0%, var(--bg1) 48%, #0f172a 100%);
    color: #e2e8f0;
    padding: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
}

body.theme-app {
    margin: 0;
    min-height: 100vh;
    font-family: var(--font);
    background:
        radial-gradient(1000px 480px at 80% -5%, rgba(124, 58, 237, 0.12), transparent 50%),
        radial-gradient(800px 400px at 0% 20%, rgba(8, 145, 178, 0.14), transparent 45%),
        linear-gradient(180deg, #f1f5f9 0%, #eef2ff 40%, #f8fafc 100%);
    color: var(--text);
    padding: 20px 20px 40px;
}

.auth-shell {
    width: 100%;
    max-width: 460px;
}
.auth-card {
    background: var(--card);
    border: 1px solid rgba(255, 255, 255, 0.5);
    border-radius: calc(var(--radius) + 4px);
    padding: 32px 30px;
    box-shadow: var(--shadow);
    backdrop-filter: blur(10px);
    color: var(--text);
}

.auth-brand {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    font-weight: 800;
    font-size: 1.05rem;
    letter-spacing: -0.02em;
    color: inherit;
}
.auth-brand-dot {
    width: 38px;
    height: 38px;
    border-radius: 12px;
    background: linear-gradient(135deg, var(--accent) 0%, var(--accent2) 100%);
    box-shadow: 0 10px 24px rgba(124, 58, 237, 0.35);
}
.auth-card h1 {
    margin: 18px 0 8px;
    font-size: 1.65rem;
    letter-spacing: -0.03em;
    font-weight: 800;
    color: var(--text);
}
.auth-card .lead {
    margin: 0 0 22px;
    font-size: 0.9375rem;
    line-height: 1.6;
    color: var(--muted);
}
.auth-card label {
    display: block;
    font-weight: 600;
    font-size: 0.8125rem;
    margin: 14px 0 8px;
    color: var(--text);
}
.auth-card input {
    width: 100%;
    padding: 12px 14px;
    border-radius: var(--radius-sm);
    border: 1px solid #cbd5e1;
    font-size: 0.9375rem;
    background: #fff;
    outline: none;
    transition: border-color 0.15s, box-shadow 0.15s;
}

.auth-card textarea {
    width: 100%;
    box-sizing: border-box;
    min-height: 88px;
    padding: 12px 14px;
    border-radius: var(--radius-sm);
    border: 1px solid #cbd5e1;
    font-size: 0.9375rem;
    background: #fff;
    outline: none;
    resize: vertical;
    transition: border-color 0.15s, box-shadow 0.15s;
}

.auth-card textarea:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(8, 145, 178, 0.2);
}
.auth-card input:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(8, 145, 178, 0.2);
}

.btn-gradient {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    margin-top: 22px;
    padding: 13px 18px;
    border: none;
    border-radius: var(--radius-sm);
    font-size: 0.9375rem;
    font-weight: 700;
    cursor: pointer;
    color: #fff;
    background: linear-gradient(130deg, var(--accent), var(--accent2));
    box-shadow: 0 12px 28px rgba(124, 58, 237, 0.32);
    transition: transform 0.15s ease, filter 0.15s;
}
.btn-gradient:hover:not(:disabled) {
    transform: translateY(-1px);
    filter: brightness(1.05);
}
.btn-gradient:disabled { opacity: 0.68; cursor: not-allowed; transform: none; }

.auth-links {
    margin-top: 20px;
    font-size: 0.9375rem;
}
.auth-links a {
    color: var(--accent2);
    font-weight: 600;
    text-decoration: none;
}
.auth-links a:hover { text-decoration: underline; }

.msg-err {
    padding: 10px 12px;
    border-radius: var(--radius-sm);
    font-size: 0.875rem;
    margin-bottom: 12px;
    background: rgba(220, 38, 38, 0.1);
    color: #991b1b;
    border: 1px solid rgba(220, 38, 38, 0.2);
}

/* 落地页索引 */
.hero {
    width: 100%;
    max-width: 540px;
    text-align: center;
}
.hero h1 {
    margin: 0 0 10px;
    font-size: 1.875rem;
    font-weight: 800;
    letter-spacing: -0.03em;
    color: #f8fafc;
}
.hero p {
    margin: 0 0 26px;
    font-size: 1rem;
    line-height: 1.65;
    color: #94a3b8;
}
.hero-actions {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 12px;
}
.hero-actions a.btn-p {
    padding: 12px 24px;
    border-radius: 999px;
    font-weight: 700;
    text-decoration: none;
    font-size: 0.9375rem;
}
.hero-actions a.primary {
    background: linear-gradient(130deg, var(--accent), var(--accent2));
    color: #fff;
    box-shadow: 0 12px 34px rgba(124, 58, 237, 0.4);
}
.hero-actions a.secondary {
    background: rgba(255, 255, 255, 0.1);
    color: #f1f5f9;
    border: 1px solid rgba(255, 255, 255, 0.22);
}
.hero-hint {
    margin-top: 22px;
    font-size: 0.8rem;
    color: #64748b;
}

/* ===== 工作台 dashboard ===== */

.app-topbar {
    max-width: 920px;
    margin: 0 auto 16px;
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 12px;
    justify-content: space-between;
}

.app-chip {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 14px;
    background: rgba(255, 255, 255, 0.85);
    border: 1px solid rgba(148, 163, 184, 0.35);
    border-radius: 999px;
    font-size: 0.875rem;
    color: var(--muted);
    box-shadow: 0 2px 8px rgba(15, 23, 42, 0.04);
}
.app-chip strong { color: var(--text); font-weight: 700; }
.app-chip .bal {
    font-weight: 800;
    color: var(--accent);
    margin: 0 2px;
}
.app-top-links a {
    font-size: 0.875rem;
    font-weight: 700;
    color: var(--accent2);
    text-decoration: none;
    padding: 8px 12px;
    border-radius: 999px;
    background: #fff;
    border: 1px solid rgba(148, 163, 184, 0.4);
}
.app-top-links a:hover { border-color: var(--accent2); }

.app-wrap {
    max-width: 920px;
    margin: 0 auto;
    display: grid;
    gap: 18px;
}

.app-card {
    background: rgba(255, 255, 255, 0.96);
    border: 1px solid rgba(148, 163, 184, 0.35);
    border-radius: calc(var(--radius) + 2px);
    padding: 26px;
    box-shadow: var(--shadow);
}

.app-card h1 {
    margin: 0 0 6px;
    font-size: 1.625rem;
    font-weight: 800;
    letter-spacing: -0.03em;
}
.app-card .subtle {
    margin: 0 0 4px;
    font-size: 0.9375rem;
    color: var(--muted);
    line-height: 1.5;
}

.field { display: grid; gap: 8px; margin-top: 20px; }
.label { font-size: 0.8125rem; font-weight: 700; color: var(--text); }

.app-card textarea,
.app-card input[type="text"] {
    width: 100%;
    padding: 14px 16px;
    border-radius: var(--radius-sm);
    border: 1px solid #cbd5e1;
    font-size: 0.9375rem;
    outline: none;
    font-family: var(--font);
    transition: border-color 0.15s, box-shadow 0.15s;
}
.app-card textarea {
    min-height: 118px;
    resize: vertical;
    line-height: 1.6;
}
.app-card textarea:focus,
.app-card input:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(8, 145, 178, 0.15);
}
.result-box { background: #f8fafc; }

.actions-row {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-top: 18px;
}
.btn-dash {
    border: none;
    border-radius: var(--radius-sm);
    padding: 12px 18px;
    font-size: 0.9375rem;
    font-weight: 700;
    cursor: pointer;
    transition: transform 0.12s ease, opacity 0.12s;
}
.btn-dash:active:not(:disabled) { transform: scale(0.98); }
.btn-dash:disabled { opacity: 0.55; cursor: not-allowed; }
.btn-dash-primary {
    background: linear-gradient(130deg, #0ea5e9, #6366f1);
    color: #fff;
    box-shadow: 0 10px 24px rgba(99, 102, 241, 0.3);
}
.btn-dash-secondary {
    background: #fff;
    color: var(--text);
    border: 1px solid #cbd5e1;
}

.status {
    margin-top: 16px;
    font-size: 0.9375rem;
    font-weight: 700;
}
.status.success { color: var(--success); }
.status.error { color: var(--error); }
.status.warning { color: var(--warn); }

.qr-panel {
    display: none;
    margin-top: 22px;
    padding-top: 22px;
    border-top: 1px dashed rgba(148, 163, 184, 0.6);
}
.qr-panel.is-visible { display: block; }
.qr-panel-inner {
    display: grid;
    grid-template-columns: auto 1fr;
    gap: 24px;
    align-items: start;
}
@media (max-width: 640px) {
    .qr-panel-inner {
        grid-template-columns: 1fr;
        justify-items: center;
        text-align: center;
    }
}
.qr-canvas-wrap {
    padding: 16px;
    background: linear-gradient(145deg, #fff, #f1f5f9);
    border-radius: 20px;
    border: 1px solid rgba(148, 163, 184, 0.4);
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.85);
}
#qrCanvas { display: block; border-radius: 12px; }
.qr-copy {
    padding-top: 4px;
}
.qr-copy h3 {
    margin: 0 0 8px;
    font-size: 1rem;
    font-weight: 800;
}
.qr-copy p {
    margin: 0 0 14px;
    font-size: 0.875rem;
    color: var(--muted);
    line-height: 1.55;
}

.log {
    background: linear-gradient(160deg, #0f172a 0%, #1e293b 100%);
    color: #e2e8f0;
    border-radius: calc(var(--radius-sm) + 4px);
    padding: 16px 18px;
    min-height: 210px;
    max-height: 300px;
    overflow: auto;
    font-size: 0.8125rem;
    line-height: 1.72;
    font-family: ui-monospace, SFMono-Regular, Consolas, "Liberation Mono", monospace;
    border: 1px solid rgba(148, 163, 184, 0.2);
}
.log-line + .log-line { margin-top: 6px; }
.log-label {
    margin-bottom: 12px;
    font-size: 0.9375rem;
    font-weight: 800;
    color: var(--text);
}

@media (max-width: 640px) {
    .actions-row { flex-direction: column; }
    .btn-dash { width: 100%; justify-content: center; }
}