/* ============================================
   夸微科技 Kuuwee - Design System v2
   浅蓝+白 · 毛玻璃 · 现代感
   ============================================ */

:root {
    --kw-primary: #3B82F6;
    --kw-primary-soft: #60A5FA;
    --kw-primary-pale: #93C5FD;
    --kw-primary-wash: #DBEAFE;
    --kw-accent: #06B6D4;
    --kw-accent-soft: #67E8F9;
    --kw-bg: #F0F5FF;
    --kw-bg-auth: linear-gradient(135deg, #E0ECFF 0%, #F0F5FF 40%, #E8F4FD 70%, #F5F0FF 100%);
    --kw-surface: #FFFFFF;
    --kw-text: #1E293B;
    --kw-text-secondary: #64748B;
    --kw-text-muted: #94A3B8;
    --kw-border: rgba(148,163,184,0.2);
    --kw-border-solid: #E2E8F0;
    --kw-success: #10B981;
    --kw-warning: #F59E0B;
    --kw-danger: #EF4444;
    --kw-radius: 16px;
    --kw-radius-lg: 24px;
    --kw-shadow: 0 4px 24px rgba(59,130,246,0.07);
    --kw-shadow-lg: 0 16px 48px rgba(59,130,246,0.10);
    --kw-shadow-card: 0 8px 32px rgba(59,130,246,0.08);
    --kw-glass: rgba(255,255,255,0.65);
    --kw-glass-strong: rgba(255,255,255,0.82);
    --kw-glass-border: rgba(255,255,255,0.5);
    --kw-font: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --kw-mono: 'JetBrains Mono', 'Fira Code', monospace;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 16px; scroll-behavior: smooth; }
body {
    font-family: var(--kw-font);
    color: var(--kw-text);
    background: var(--kw-bg);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

/* ---- Auth Pages ---- */
.auth-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--kw-bg-auth);
    position: relative;
    overflow: hidden;
}
.auth-page::before {
    content: '';
    position: absolute;
    width: 500px; height: 500px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(59,130,246,0.12) 0%, transparent 70%);
    top: -120px; left: -100px;
    animation: orbFloat1 16s ease-in-out infinite;
}
.auth-page::after {
    content: '';
    position: absolute;
    width: 400px; height: 400px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(6,182,212,0.10) 0%, transparent 70%);
    bottom: -80px; right: -60px;
    animation: orbFloat2 20s ease-in-out infinite;
}
@keyframes orbFloat1 {
    0%, 100% { transform: translate(0, 0) scale(1); }
    33% { transform: translate(30px, 40px) scale(1.05); }
    66% { transform: translate(-20px, 20px) scale(0.98); }
}
@keyframes orbFloat2 {
    0%, 100% { transform: translate(0, 0) scale(1); }
    50% { transform: translate(-40px, -30px) scale(1.08); }
}
.auth-bg-grid {
    position: absolute; inset: 0;
    background-image:
        linear-gradient(rgba(59,130,246,0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(59,130,246,0.03) 1px, transparent 1px);
    background-size: 48px 48px;
    pointer-events: none;
}

/* ---- Glass Card ---- */
.glass-card {
    position: relative; z-index: 1;
    background: var(--kw-glass-strong);
    backdrop-filter: blur(32px) saturate(1.6);
    -webkit-backdrop-filter: blur(32px) saturate(1.6);
    border: 1px solid var(--kw-glass-border);
    border-radius: var(--kw-radius-lg);
    padding: 48px 44px;
    width: 100%; max-width: 460px;
    box-shadow: var(--kw-shadow-lg), inset 0 1px 0 rgba(255,255,255,0.6);
    animation: cardSlideUp 0.7s cubic-bezier(0.16, 1, 0.3, 1) both;
}
@keyframes cardSlideUp {
    from { opacity: 0; transform: translateY(32px) scale(0.97); }
    to { opacity: 1; transform: translateY(0) scale(1); }
}

/* ---- Logo ---- */
.kw-logo { text-align: center; margin-bottom: 36px; }
.kw-logo-icon {
    width: 60px; height: 60px;
    background: linear-gradient(135deg, var(--kw-primary), var(--kw-accent));
    border-radius: 18px;
    display: inline-flex; align-items: center; justify-content: center;
    margin-bottom: 14px;
    box-shadow: 0 8px 24px rgba(59,130,246,0.25);
    animation: logoGlow 3s ease-in-out infinite alternate;
}
@keyframes logoGlow {
    from { box-shadow: 0 8px 24px rgba(59,130,246,0.25); }
    to { box-shadow: 0 8px 32px rgba(6,182,212,0.3); }
}
.kw-logo-icon svg { width: 32px; height: 32px; }
.kw-logo h1 { font-size: 24px; font-weight: 700; color: var(--kw-text); letter-spacing: -0.5px; }
.kw-logo p { font-size: 13px; color: var(--kw-text-secondary); margin-top: 6px; }

/* ---- Forms ---- */
.form-group { margin-bottom: 22px; }
.form-group label { display: block; font-size: 13px; font-weight: 500; color: var(--kw-text-secondary); margin-bottom: 7px; }
.form-input {
    width: 100%; padding: 13px 16px; font-size: 15px; font-family: var(--kw-font);
    border: 1.5px solid var(--kw-border-solid); border-radius: 12px;
    background: rgba(255,255,255,0.9); color: var(--kw-text);
    transition: all 0.25s; outline: none;
}
.form-input:focus { border-color: var(--kw-primary-soft); box-shadow: 0 0 0 4px rgba(59,130,246,0.08); background: #fff; }
.form-input::placeholder { color: var(--kw-text-muted); }
.form-input:hover { border-color: var(--kw-primary-pale); }
.input-wrapper { position: relative; }
.input-wrapper .form-input { padding-right: 46px; }
.pwd-toggle {
    position: absolute; right: 14px; top: 50%; transform: translateY(-50%);
    background: none; border: none; color: var(--kw-text-muted); cursor: pointer; padding: 4px; display: flex;
}
.pwd-toggle:hover { color: var(--kw-primary); }

/* ---- Buttons ---- */
.btn {
    display: inline-flex; align-items: center; justify-content: center; gap: 8px;
    padding: 14px 28px; font-size: 15px; font-weight: 600; font-family: var(--kw-font);
    border: none; border-radius: 12px; cursor: pointer; transition: all 0.25s; text-decoration: none;
}
.btn-primary {
    width: 100%;
    background: linear-gradient(135deg, var(--kw-primary), var(--kw-primary-soft));
    color: #fff; box-shadow: 0 4px 16px rgba(59,130,246,0.3);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 8px 28px rgba(59,130,246,0.35); }
.btn-primary:active { transform: translateY(0); }
.btn-primary:disabled { opacity: 0.55; cursor: not-allowed; transform: none; }
.btn-outline { background: transparent; border: 1.5px solid var(--kw-border-solid); color: var(--kw-text); }
.btn-outline:hover { border-color: var(--kw-primary-soft); color: var(--kw-primary); background: rgba(59,130,246,0.04); }

/* ---- Links & Alerts ---- */
.auth-link { text-align: center; margin-top: 28px; font-size: 14px; color: var(--kw-text-secondary); }
.auth-link a { color: var(--kw-primary); text-decoration: none; font-weight: 500; }
.auth-link a:hover { text-decoration: underline; }

.alert { padding: 14px 18px; border-radius: 12px; font-size: 14px; margin-bottom: 22px; display: flex; align-items: flex-start; gap: 10px; animation: alertFade 0.35s ease; }
@keyframes alertFade { from { opacity: 0; transform: translateY(-6px); } }
.alert-error { background: #FEF2F2; color: #991B1B; border: 1px solid #FECACA; }
.alert-success { background: #F0FDF4; color: #166534; border: 1px solid #BBF7D0; }
.alert-warning { background: #FFFBEB; color: #92400E; border: 1px solid #FDE68A; }

/* ============================================
   Dashboard
   ============================================ */
.dashboard { min-height: 100vh; background: var(--kw-bg); }

.topnav {
    background: rgba(255,255,255,0.78);
    backdrop-filter: blur(20px) saturate(1.4);
    -webkit-backdrop-filter: blur(20px) saturate(1.4);
    border-bottom: 1px solid rgba(226,232,240,0.6);
    padding: 0 36px; height: 68px;
    display: flex; align-items: center; justify-content: space-between;
    position: sticky; top: 0; z-index: 100;
}
.topnav-brand { display: flex; align-items: center; gap: 12px; text-decoration: none; }
.topnav-brand-icon {
    width: 38px; height: 38px;
    background: linear-gradient(135deg, var(--kw-primary), var(--kw-accent));
    border-radius: 11px; display: flex; align-items: center; justify-content: center;
    box-shadow: 0 3px 10px rgba(59,130,246,0.2);
}
.topnav-brand-icon svg { width: 20px; height: 20px; }
.topnav-brand span { font-size: 18px; font-weight: 700; color: var(--kw-text); }
.topnav-right { display: flex; align-items: center; gap: 16px; }
.topnav-user {
    display: flex; align-items: center; gap: 10px;
    padding: 7px 16px; border-radius: 12px;
    background: var(--kw-primary-wash); font-size: 14px; color: var(--kw-text-secondary);
    border: 1px solid rgba(59,130,246,0.08);
}
.topnav-user strong { color: var(--kw-primary); font-weight: 600; }
.topnav-logout { font-size: 13px; color: var(--kw-text-muted); text-decoration: none; padding: 7px 14px; border-radius: 10px; transition: all 0.2s; }
.topnav-logout:hover { background: #FEF2F2; color: var(--kw-danger); }

.dash-container { max-width: 1160px; margin: 0 auto; padding: 40px 28px; }

/* Welcome Banner */
.welcome-banner {
    background: linear-gradient(135deg, var(--kw-primary-wash) 0%, #E0F2FE 50%, #F0FDFA 100%);
    border: 1px solid rgba(59,130,246,0.1);
    border-radius: var(--kw-radius-lg); padding: 44px;
    position: relative; overflow: hidden; margin-bottom: 40px;
}
.welcome-banner::before {
    content: ''; position: absolute; right: -20px; top: -20px;
    width: 200px; height: 200px;
    background: radial-gradient(circle, rgba(6,182,212,0.12) 0%, transparent 70%);
    border-radius: 50%;
}
.welcome-banner h2 { font-size: 24px; font-weight: 700; color: var(--kw-text); margin-bottom: 8px; }
.welcome-banner > p { font-size: 15px; color: var(--kw-text-secondary); max-width: 520px; }

.usage-badge {
    display: inline-flex; align-items: center; gap: 8px;
    background: rgba(255,255,255,0.7); backdrop-filter: blur(8px);
    padding: 8px 18px; border-radius: 24px; font-size: 13px; font-weight: 500;
    margin-top: 18px; color: var(--kw-text-secondary); border: 1px solid rgba(59,130,246,0.08);
}
.usage-dot { width: 8px; height: 8px; border-radius: 50%; background: var(--kw-success); animation: pulse 2s ease infinite; }
.usage-dot.warning { background: var(--kw-warning); }
.usage-dot.danger { background: var(--kw-danger); }
@keyframes pulse { 0%, 100% { opacity: 1; } 50% { opacity: 0.35; } }

.apikey-bar {
    background: rgba(255,255,255,0.65); backdrop-filter: blur(8px);
    border: 1px solid rgba(59,130,246,0.08); border-radius: 12px;
    padding: 12px 18px; margin-top: 16px;
    display: flex; align-items: center; gap: 12px;
    font-family: var(--kw-mono); font-size: 13px; color: var(--kw-text-secondary);
}
.apikey-bar code { flex: 1; letter-spacing: 0.5px; color: var(--kw-text); }
.apikey-bar button {
    background: var(--kw-primary); border: none; color: #fff;
    padding: 7px 16px; border-radius: 8px; cursor: pointer;
    font-size: 12px; font-weight: 500; font-family: var(--kw-font);
    box-shadow: 0 2px 8px rgba(59,130,246,0.2); transition: all 0.2s;
}
.apikey-bar button:hover { background: var(--kw-primary-soft); transform: translateY(-1px); }

.section-title {
    font-size: 18px; font-weight: 600; color: var(--kw-text); margin-bottom: 24px;
    display: flex; align-items: center; gap: 10px;
}
.section-title::before {
    content: ''; width: 4px; height: 22px;
    background: linear-gradient(180deg, var(--kw-primary-soft), var(--kw-accent)); border-radius: 2px;
}

/* ---- Agent Grid ---- */
.agent-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(340px, 1fr)); gap: 22px; }
.agent-card {
    background: rgba(255,255,255,0.7);
    backdrop-filter: blur(16px);
    border-radius: var(--kw-radius);
    border: 1px solid rgba(226,232,240,0.6);
    padding: 30px; display: flex; flex-direction: column;
    transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    cursor: pointer; text-decoration: none; color: inherit;
    position: relative; overflow: hidden;
}
.agent-card::before {
    content: ''; position: absolute; top: 0; left: 0; right: 0;
    height: 3px; border-radius: 3px 3px 0 0; opacity: 0; transition: opacity 0.3s;
    background: linear-gradient(90deg, var(--kw-primary), var(--kw-accent));
}
.agent-card:hover {
    background: rgba(255,255,255,0.88);
    border-color: var(--kw-primary-pale);
    box-shadow: var(--kw-shadow-card);
    transform: translateY(-6px);
}
.agent-card:hover::before { opacity: 1; }

.agent-icon-wrap {
    width: 56px; height: 56px; border-radius: 16px;
    display: flex; align-items: center; justify-content: center;
    margin-bottom: 18px; transition: transform 0.3s;
}
.agent-card:hover .agent-icon-wrap { transform: scale(1.08); }
.agent-icon-wrap.blue { background: linear-gradient(135deg, #EFF6FF, #DBEAFE); }
.agent-icon-wrap.cyan { background: linear-gradient(135deg, #ECFEFF, #CFFAFE); }
.agent-icon-wrap.green { background: linear-gradient(135deg, #F0FDF4, #D1FAE5); }
.agent-icon-wrap.purple { background: linear-gradient(135deg, #F5F3FF, #EDE9FE); }
.agent-icon-wrap.orange { background: linear-gradient(135deg, #FFF7ED, #FED7AA); }
.agent-icon-wrap.rose { background: linear-gradient(135deg, #FFF1F2, #FECDD3); }
.agent-icon-wrap svg { width: 28px; height: 28px; }

.agent-card h3 { font-size: 16px; font-weight: 600; margin-bottom: 8px; }
.agent-card p { font-size: 13px; color: var(--kw-text-secondary); line-height: 1.7; flex: 1; }
.agent-arrow {
    display: flex; align-items: center; gap: 6px; margin-top: 18px;
    font-size: 13px; font-weight: 500; color: var(--kw-primary);
    opacity: 0; transform: translateX(-10px); transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}
.agent-card:hover .agent-arrow { opacity: 1; transform: translateX(0); }

/* Purchase Banner */
.purchase-banner {
    background: rgba(255,251,235,0.8); backdrop-filter: blur(12px);
    border: 1px solid #FDE68A; border-radius: var(--kw-radius);
    padding: 24px 32px; margin-bottom: 32px; display: flex; align-items: center; gap: 18px;
}
.purchase-banner-icon { font-size: 28px; flex-shrink: 0; }
.purchase-banner-text h3 { font-size: 15px; font-weight: 600; color: #92400E; margin-bottom: 4px; }
.purchase-banner-text p { font-size: 13px; color: #B45309; }
.purchase-banner .btn {
    flex-shrink: 0; margin-left: auto;
    background: linear-gradient(135deg, #F59E0B, #FBBF24); color: #fff;
    font-size: 14px; padding: 10px 24px; box-shadow: 0 4px 12px rgba(245,158,11,0.25);
}
.purchase-banner .btn:hover { transform: translateY(-1px); }

/* Verify */
.verify-card { text-align: center; }
.verify-icon { width: 72px; height: 72px; border-radius: 50%; display: inline-flex; align-items: center; justify-content: center; margin-bottom: 20px; font-size: 32px; }
.verify-icon.success { background: #F0FDF4; color: var(--kw-success); }
.verify-icon.error { background: #FEF2F2; color: var(--kw-danger); }

.spinner { width: 18px; height: 18px; border: 2px solid rgba(255,255,255,0.3); border-top-color: #fff; border-radius: 50%; animation: spin 0.6s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }

@media (max-width: 768px) {
    .glass-card { margin: 16px; padding: 36px 24px; }
    .dash-container { padding: 24px 16px; }
    .welcome-banner { padding: 28px 24px; }
    .agent-grid { grid-template-columns: 1fr; }
    .topnav { padding: 0 16px; }
    .purchase-banner { flex-direction: column; text-align: center; }
    .purchase-banner .btn { margin-left: 0; width: 100%; }
}