/* ============================================
   KIẾM THẾ AI — Wuxia Account Portal
   ============================================ */
:root {
    --bg-color: #0a0b0e;
    --bg-deep: #07080a;
    --card-bg: rgba(20, 22, 27, 0.82);
    --card-border: rgba(212, 175, 55, 0.16);
    --card-border-active: rgba(212, 175, 55, 0.45);

    --primary: #d4af37;
    --primary-rgb: 212, 175, 55;
    --primary-hover: #f1c96b;
    --primary-deep: #8a6d1f;

    --jade: #4bb89a;
    --cinnabar: #b4432f;

    --field-bg: rgba(255, 255, 255, 0.035);
    --field-border: rgba(255, 255, 255, 0.10);

    --text-main: #f2f3f5;
    --text-muted: #8b929e;
    --text-accent: #f7d070;

    --danger: #e05a48;
    --success: #3fbf85;

    --radius: 12px;
    --transition: all 0.25s cubic-bezier(0.25, 0.8, 0.25, 1);
    --font-main: 'Be Vietnam Pro', system-ui, sans-serif;
    --font-heading: 'Cinzel', Georgia, serif;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

body {
    background: var(--bg-color);
    color: var(--text-main);
    font-family: var(--font-main);
    font-size: 15px;
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 32px 16px;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

/* ---------- Background ---------- */
.bg-layer { position: fixed; inset: 0; z-index: -1; overflow: hidden; background: radial-gradient(ellipse at 50% 0%, #14161c 0%, var(--bg-deep) 60%); }

.bg-glow {
    position: absolute;
    width: 700px; height: 700px;
    border-radius: 50%;
    filter: blur(160px);
    opacity: 0.14;
    animation: pulseGlow 14s infinite alternate ease-in-out;
}
.bg-glow-1 { background: radial-gradient(circle, var(--primary) 0%, transparent 70%); top: -260px; left: -180px; }
.bg-glow-2 { background: radial-gradient(circle, var(--cinnabar) 0%, transparent 70%); bottom: -280px; right: -180px; animation-delay: -7s; }

.bg-grain {
    position: absolute; inset: 0;
    opacity: 0.035;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='120' height='120'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='3'/%3E%3C/filter%3E%3Crect width='120' height='120' filter='url(%23n)'/%3E%3C/svg%3E");
}

@keyframes pulseGlow {
    0% { transform: scale(1) translate(0,0); opacity: 0.10; }
    100% { transform: scale(1.18) translate(40px, 30px); opacity: 0.18; }
}

/* ---------- Layout ---------- */
.container { width: 100%; max-width: 520px; animation: rise 0.6s ease-out; }
.container:has(#dashboard-tab.active) { max-width: 880px; }

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

/* ---------- Header ---------- */
.header { text-align: center; margin-bottom: 26px; }

.crest {
    width: 56px; height: 56px;
    margin: 0 auto 12px;
    color: var(--primary);
    opacity: 0.9;
    filter: drop-shadow(0 0 14px rgba(var(--primary-rgb), 0.35));
}
.crest svg { width: 100%; height: 100%; }

.logo-text {
    font-family: var(--font-heading);
    font-size: clamp(1.9rem, 6vw, 2.5rem);
    font-weight: 700;
    letter-spacing: 0.14em;
    line-height: 1.1;
    background: linear-gradient(180deg, #fdf3d0 0%, var(--primary) 55%, var(--primary-deep) 100%);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}
.logo-text .accent { -webkit-text-fill-color: var(--cinnabar); color: var(--cinnabar); }

.subtitle {
    margin-top: 8px;
    color: var(--text-muted);
    font-size: 0.82rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

/* ---------- Card ---------- */
.main-card {
    background: var(--card-bg);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    border: 1px solid var(--card-border);
    border-radius: 18px;
    box-shadow: 0 24px 60px rgba(0,0,0,0.55), inset 0 1px 0 rgba(255,255,255,0.04);
    overflow: hidden;
}

/* ---------- Tabs ---------- */
.tabs-nav {
    position: relative;
    display: flex;
    border-bottom: 1px solid var(--card-border);
    background: rgba(0,0,0,0.22);
}

.tab-btn {
    flex: 1;
    padding: 16px 10px;
    background: none;
    border: none;
    color: var(--text-muted);
    font-family: var(--font-main);
    font-size: 0.8rem;
    font-weight: 600;
    letter-spacing: 0.1em;
    cursor: pointer;
    transition: var(--transition);
}
.tab-btn:hover { color: var(--text-accent); }
.tab-btn.active { color: var(--primary); }

.tab-indicator {
    position: absolute;
    bottom: -1px; left: 0;
    width: 50%; height: 2px;
    background: linear-gradient(90deg, transparent, var(--primary), transparent);
    transition: transform 0.35s cubic-bezier(0.25, 0.8, 0.25, 1);
}
.tab-indicator.right { transform: translateX(100%); }
.tabs-nav[hidden] { display: none; }

/* ---------- Panes ---------- */
.tab-content { padding: 30px 28px 28px; }
.tab-pane { display: none; }
.tab-pane.active { display: block; animation: fadeUp 0.35s ease-out; }

@keyframes fadeUp {
    from { opacity: 0; transform: translateY(8px); }
    to { opacity: 1; transform: translateY(0); }
}

.pane-intro {
    color: var(--text-muted);
    font-size: 0.88rem;
    margin-bottom: 22px;
}

/* ---------- Forms ---------- */
.form-group { margin-bottom: 18px; }

label {
    display: block;
    margin-bottom: 7px;
    font-size: 0.78rem;
    font-weight: 600;
    letter-spacing: 0.05em;
    color: #c3c9d4;
    text-transform: uppercase;
}
.req { color: var(--cinnabar); }

.input-wrap { position: relative; }

input[type="text"], input[type="password"], input[type="email"], select {
    width: 100%;
    padding: 13px 15px;
    background: var(--field-bg);
    border: 1px solid var(--field-border);
    border-radius: var(--radius);
    color: var(--text-main);
    font-family: var(--font-main);
    font-size: 0.95rem;
    transition: var(--transition);
    outline: none;
}
.input-wrap input { padding-right: 48px; }

input::placeholder { color: #5f6672; }

input:focus, select:focus {
    border-color: var(--card-border-active);
    background: rgba(var(--primary-rgb), 0.05);
    box-shadow: 0 0 0 3px rgba(var(--primary-rgb), 0.10);
}

input:invalid:not(:placeholder-shown):not(:focus) { border-color: rgba(224, 90, 72, 0.45); }

/* Eye toggle */
.eye-btn {
    position: absolute;
    top: 50%; right: 6px;
    transform: translateY(-50%);
    width: 36px; height: 36px;
    border: none;
    border-radius: 8px;
    background: transparent;
    cursor: pointer;
    display: flex; align-items: center; justify-content: center;
    transition: var(--transition);
}
.eye-btn:hover { background: rgba(255,255,255,0.06); }
.eye-btn::before {
    content: '';
    width: 20px; height: 20px;
    background-color: var(--text-muted);
    transition: var(--transition);
    -webkit-mask: var(--eye) center/contain no-repeat;
    mask: var(--eye) center/contain no-repeat;
    --eye: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23000' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M2 12s3.6-7 10-7 10 7 10 7-3.6 7-10 7-10-7-10-7z'/%3E%3Ccircle cx='12' cy='12' r='3'/%3E%3C/svg%3E");
}
.eye-btn:hover::before { background-color: var(--primary); }
.eye-btn.on::before {
    background-color: var(--primary);
    --eye: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23000' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M9.9 4.24A9.1 9.1 0 0 1 12 4c6.4 0 10 7 10 7a18 18 0 0 1-2.7 3.7M6.6 6.6A17.6 17.6 0 0 0 2 11s3.6 7 10 7a9 9 0 0 0 5.4-1.6'/%3E%3Cline x1='2' y1='2' x2='22' y2='22'/%3E%3C/svg%3E");
}

.hint {
    display: block;
    margin-top: 6px;
    font-size: 0.76rem;
    color: var(--text-muted);
    line-height: 1.45;
}
.hint[hidden] { display: none; }
.hint-error { color: var(--danger); }
.hint-ok { color: var(--success); }

/* Password strength */
.strength { margin-top: 9px; display: flex; align-items: center; gap: 10px; }
.strength-bar {
    flex: 1;
    height: 4px;
    border-radius: 4px;
    background: rgba(255,255,255,0.07);
    overflow: hidden;
}
.strength-bar span {
    display: block;
    height: 100%;
    width: 0;
    border-radius: 4px;
    background: var(--danger);
    transition: width 0.3s ease, background 0.3s ease;
}
.strength-label { font-size: 0.72rem; color: var(--text-muted); white-space: nowrap; }
.strength[data-level="1"] .strength-bar span { width: 25%; background: var(--danger); }
.strength[data-level="2"] .strength-bar span { width: 50%; background: #e0a23c; }
.strength[data-level="3"] .strength-bar span { width: 75%; background: var(--primary); }
.strength[data-level="4"] .strength-bar span { width: 100%; background: var(--success); }

/* Captcha */
.captcha-group { margin-top: 4px; }
.captcha-wrapper { display: flex; gap: 12px; align-items: stretch; }
.captcha-wrapper input { flex: 1; letter-spacing: 0.2em; text-transform: lowercase; }

.captcha-img {
    width: 132px;
    min-height: 48px;
    flex-shrink: 0;
    padding: 0;
    background: rgba(0,0,0,0.4);
    border: 1px dashed var(--card-border);
    border-radius: var(--radius);
    cursor: pointer;
    overflow: hidden;
    display: flex; align-items: center; justify-content: center;
    transition: var(--transition);
    color: var(--text-muted);
    font-size: 0.75rem;
}
.captcha-img:hover { border-color: var(--card-border-active); border-style: solid; }
.captcha-img svg { width: 100%; height: 100%; display: block; }

/* ---------- Buttons ---------- */
.btn {
    display: inline-flex;
    align-items: center; justify-content: center;
    gap: 8px;
    padding: 14px 22px;
    border: 1px solid transparent;
    border-radius: var(--radius);
    font-family: var(--font-main);
    font-size: 0.82rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    cursor: pointer;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}
.btn:active { transform: translateY(1px); }
.btn[disabled] { opacity: 0.55; cursor: not-allowed; }

.btn-block { width: 100%; margin-top: 6px; }
.btn-sm { padding: 9px 16px; font-size: 0.74rem; }

.btn-primary {
    background: linear-gradient(135deg, var(--primary) 0%, #b8912c 100%);
    color: #16120a;
    box-shadow: 0 6px 20px rgba(var(--primary-rgb), 0.20);
}
.btn-primary:hover:not([disabled]) {
    background: linear-gradient(135deg, var(--primary-hover) 0%, var(--primary) 100%);
    box-shadow: 0 8px 28px rgba(var(--primary-rgb), 0.34);
}

.btn-secondary {
    background: rgba(255,255,255,0.05);
    border-color: var(--field-border);
    color: var(--text-main);
}
.btn-secondary:hover { background: rgba(var(--primary-rgb), 0.10); border-color: var(--card-border-active); color: var(--text-accent); }

.btn-danger {
    background: rgba(224, 90, 72, 0.10);
    border-color: rgba(224, 90, 72, 0.35);
    color: #f0907f;
}
.btn-danger:hover { background: rgba(224, 90, 72, 0.20); }

.btn.loading { color: transparent; pointer-events: none; }
.btn.loading::after {
    content: '';
    position: absolute;
    width: 18px; height: 18px;
    border: 2px solid rgba(0,0,0,0.25);
    border-top-color: #16120a;
    border-radius: 50%;
    animation: spin 0.7s linear infinite;
}
.btn-secondary.loading::after, .btn-danger.loading::after { border-color: rgba(255,255,255,0.2); border-top-color: var(--primary); }
@keyframes spin { to { transform: rotate(360deg); } }

.btn-text {
    background: none; border: none;
    color: var(--primary);
    font-family: var(--font-main);
    font-size: 0.78rem;
    font-weight: 600;
    cursor: pointer;
    padding: 2px 6px;
    border-radius: 6px;
    transition: var(--transition);
}
.btn-text:hover { background: rgba(var(--primary-rgb), 0.12); }

.form-foot {
    margin-top: 16px;
    text-align: center;
    font-size: 0.83rem;
    color: var(--text-muted);
}
.form-foot a { color: var(--primary); text-decoration: none; font-weight: 600; }
.form-foot a:hover { text-decoration: underline; }

/* ---------- Dashboard ---------- */
.dashboard-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 16px;
    flex-wrap: wrap;
    margin-bottom: 24px;
}
.dashboard-header h2 { font-family: var(--font-heading); font-size: 1.4rem; font-weight: 600; }
.dashboard-header .accent { color: var(--primary); }
.dashboard-header .pane-intro { margin-bottom: 0; }

.dashboard-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }

.dashboard-box {
    background: rgba(255,255,255,0.022);
    border: 1px solid var(--field-border);
    border-radius: 14px;
    padding: 22px;
}
.dashboard-box h3 {
    font-family: var(--font-heading);
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-accent);
    margin-bottom: 16px;
    letter-spacing: 0.04em;
}

.safecode-display {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    padding: 14px 16px;
    background: rgba(0,0,0,0.3);
    border: 1px solid var(--field-border);
    border-radius: var(--radius);
}
.safecode-value {
    font-size: 1.25rem;
    font-weight: 600;
    letter-spacing: 0.3em;
    color: var(--primary);
    font-variant-numeric: tabular-nums;
}

.divider { border: none; border-top: 1px solid var(--field-border); margin: 20px 0; }

/* ---------- Toasts ---------- */
#toast-container {
    position: fixed;
    top: 20px; right: 20px;
    z-index: 9999;
    display: flex;
    flex-direction: column;
    gap: 10px;
    max-width: calc(100vw - 40px);
}

.toast {
    min-width: 260px;
    max-width: 340px;
    padding: 14px 16px;
    background: rgba(22, 24, 29, 0.96);
    backdrop-filter: blur(10px);
    border: 1px solid var(--field-border);
    border-left: 3px solid var(--text-muted);
    border-radius: 10px;
    box-shadow: 0 12px 34px rgba(0,0,0,0.5);
    animation: slideIn 0.32s cubic-bezier(0.25, 0.8, 0.25, 1);
}
.toast.success { border-left-color: var(--success); }
.toast.error { border-left-color: var(--danger); }
.toast.out { animation: slideOut 0.28s ease-in forwards; }

.toast-title {
    font-size: 0.72rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    margin-bottom: 3px;
}
.toast.success .toast-title { color: var(--success); }
.toast.error .toast-title { color: var(--danger); }
.toast-msg { font-size: 0.86rem; color: #d6dae1; line-height: 1.45; }

@keyframes slideIn { from { opacity: 0; transform: translateX(110%); } to { opacity: 1; transform: translateX(0); } }
@keyframes slideOut { to { opacity: 0; transform: translateX(110%); } }

/* ---------- Footer ---------- */
.footer {
    margin-top: 22px;
    text-align: center;
    font-size: 0.76rem;
    color: #5d646f;
}

/* ---------- Responsive ---------- */
@media (max-width: 720px) {
    .dashboard-grid { grid-template-columns: 1fr; }
}

@media (max-width: 480px) {
    body { padding: 20px 12px; }
    .tab-content { padding: 24px 18px 22px; }
    .dashboard-box { padding: 18px; }
    .captcha-wrapper { flex-direction: column; }
    .captcha-img { width: 100%; height: 54px; }
    #toast-container { top: 12px; right: 12px; left: 12px; }
    .toast { max-width: none; }
}

@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
}