/* ============================================================
   SPT REGISTRATION TERMINAL — tactical field-terminal aesthetic
   Inspired by Escape from Tarkov: gunmetal, olive, warning amber.
   ============================================================ */

:root {
    --bg:        #100f0c;
    --bg-2:      #15140f;
    --panel:     #1a1813;
    --panel-2:   #211e16;
    --line:      #38332440;
    --line-solid:#3b3527;
    --tan:       #b8a888;
    --tan-bright:#e2cf9a;
    --amber:     #d99a2b;
    --amber-hot: #f0b53e;
    --bone:      #d2cab4;
    --muted:     #837c66;
    --muted-dim: #5c5644;
    --green:     #a9b85a;
    --red:       #c1543c;

    --display: 'Oswald', 'Microsoft YaHei', '微软雅黑', sans-serif;
    --mono:    'Share Tech Mono', 'Microsoft YaHei', '微软雅黑', monospace;
    --body:    'Saira', 'Microsoft YaHei', '微软雅黑', sans-serif;
}

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

html, body { min-height: 100%; }

body {
    font-family: var(--body);
    color: var(--bone);
    background-color: var(--bg);
    /* layered atmosphere: vignette + warm core glow + tactical grid */
    background-image:
        radial-gradient(120% 90% at 50% -10%, rgba(217,154,43,0.10), transparent 55%),
        radial-gradient(140% 120% at 50% 120%, rgba(0,0,0,0.85), transparent 60%),
        linear-gradient(transparent 0 31px, rgba(184,168,136,0.035) 31px 32px),
        linear-gradient(90deg, transparent 0 31px, rgba(184,168,136,0.035) 31px 32px);
    background-size: auto, auto, 32px 32px, 32px 32px;
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 32px 18px;
    position: relative;
    overflow-x: hidden;
}

/* film grain overlay */
.grain {
    position: fixed; inset: 0; z-index: 9998; pointer-events: none;
    opacity: 0.045; mix-blend-mode: overlay;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='200' height='200'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

/* faint CRT scanlines */
.scanlines {
    position: fixed; inset: 0; z-index: 9997; pointer-events: none;
    opacity: 0.35;
    background: repeating-linear-gradient(
        to bottom,
        rgba(0,0,0,0) 0px,
        rgba(0,0,0,0) 2px,
        rgba(0,0,0,0.18) 3px,
        rgba(0,0,0,0) 4px
    );
}

.container { width: 100%; max-width: 480px; }

/* ---------- the terminal panel ---------- */
.register-box {
    position: relative;
    background:
        linear-gradient(180deg, rgba(217,154,43,0.04), transparent 120px),
        var(--panel);
    border: 1px solid var(--line-solid);
    padding: 30px 34px 26px;
    /* notched tactical corners */
    clip-path: polygon(
        0 14px, 14px 0,
        calc(100% - 14px) 0, 100% 14px,
        100% calc(100% - 14px), calc(100% - 14px) 100%,
        14px 100%, 0 calc(100% - 14px)
    );
    box-shadow:
        0 0 0 1px rgba(0,0,0,0.6),
        0 24px 70px rgba(0,0,0,0.65),
        inset 0 0 60px rgba(0,0,0,0.45);
    animation: panel-in 0.5s cubic-bezier(.16,.84,.44,1) both;
}

@keyframes panel-in {
    from { opacity: 0; transform: translateY(14px) scale(.99); }
    to   { opacity: 1; transform: none; }
}

/* HUD corner brackets */
.corner {
    position: absolute; width: 16px; height: 16px; z-index: 2;
    border: 2px solid var(--amber); opacity: 0.75;
}
.corner.tl { top: 7px;  left: 7px;  border-right: none;  border-bottom: none; }
.corner.tr { top: 7px;  right: 7px; border-left: none;   border-bottom: none; }
.corner.bl { bottom: 7px; left: 7px; border-right: none;  border-top: none; }
.corner.br { bottom: 7px; right: 7px; border-left: none;  border-top: none; }

/* ---------- topbar ---------- */
.topbar {
    display: flex; align-items: center; gap: 9px;
    font-family: var(--mono); font-size: 10.5px; letter-spacing: 1px;
    color: var(--muted); text-transform: uppercase;
    padding-bottom: 14px; margin-bottom: 18px;
    border-bottom: 1px dashed var(--line-solid);
}
.status-dot {
    width: 7px; height: 7px; border-radius: 50%;
    background: var(--green); box-shadow: 0 0 8px var(--green);
    animation: pulse 1.8s ease-in-out infinite;
}
@keyframes pulse { 0%,100%{opacity:1} 50%{opacity:.35} }
.topbar-text { color: var(--tan); }
.admin-link {
    margin-left: auto;
    font-family: var(--mono); font-size: 10.5px; letter-spacing: .5px;
    color: var(--muted-dim); text-decoration: none;
    transition: color .2s, text-shadow .2s;
}
.admin-link:hover { color: var(--amber-hot); text-shadow: 0 0 10px rgba(240,181,62,.5); }

/* ---------- masthead ---------- */
.masthead { margin-bottom: 24px; }
.brand { display: flex; align-items: baseline; gap: 12px; }
.brand-mark {
    font-family: var(--display); font-weight: 700; font-size: 46px;
    line-height: .9; letter-spacing: 2px; color: var(--bone);
    text-shadow: 0 2px 0 rgba(0,0,0,.5);
}
.brand-tag {
    font-family: var(--mono); font-size: 14px; color: var(--amber);
    letter-spacing: 1px;
}
.brand-sub {
    margin-top: 10px;
    font-family: var(--mono); font-size: 11px; letter-spacing: 1px;
    color: var(--muted); text-transform: uppercase;
}

/* ---------- form ---------- */
.form-group {
    margin-bottom: 17px;
    opacity: 0; transform: translateY(8px);
    animation: field-in .45s ease both;
    animation-delay: calc(0.12s + var(--i) * 0.05s);
}
@keyframes field-in { to { opacity: 1; transform: none; } }

.form-group label {
    display: flex; align-items: baseline; gap: 8px;
    margin-bottom: 7px;
    font-family: var(--body); font-weight: 500; font-size: 13px;
    color: var(--tan); letter-spacing: .5px;
}
.form-group label::before {
    content: "▸"; color: var(--amber); font-size: 10px;
    transform: translateY(-1px);
}
.ftag {
    margin-left: auto;
    font-family: var(--mono); font-size: 9.5px; letter-spacing: 1px;
    color: var(--muted-dim); text-transform: uppercase;
}

input[type="email"],
input[type="text"],
input[type="password"],
select {
    width: 100%;
    padding: 12px 14px;
    font-family: var(--mono); font-size: 14px;
    color: var(--bone);
    background: #0d0c09;
    border: 1px solid var(--line-solid);
    border-left: 2px solid var(--muted-dim);
    border-radius: 0;
    outline: none;
    transition: border-color .18s, box-shadow .18s, background .18s;
}
input::placeholder { color: #5a5440; }

input:focus, select:focus {
    border-color: var(--amber);
    border-left-color: var(--amber-hot);
    background: #121009;
    box-shadow: 0 0 0 1px rgba(217,154,43,.25), 0 0 18px rgba(217,154,43,.12) inset;
}

input:disabled, select:disabled {
    color: var(--muted); background: #0a0907;
    border-left-color: var(--line-solid); cursor: not-allowed;
}

/* verification row */
.verification-group { display: flex; gap: 8px; }
.verification-group input { flex: 1; letter-spacing: 3px; }

.send-code-btn {
    padding: 0 16px; white-space: nowrap;
    font-family: var(--mono); font-size: 12px; letter-spacing: .5px;
    color: var(--amber); background: transparent;
    border: 1px solid var(--amber); border-radius: 0;
    cursor: pointer; text-transform: uppercase;
    transition: background .18s, color .18s, box-shadow .18s;
}
.send-code-btn:hover:not(:disabled) {
    background: var(--amber); color: #15130c;
    box-shadow: 0 0 16px rgba(217,154,43,.4);
}
.send-code-btn:disabled {
    color: var(--muted-dim); border-color: var(--line-solid); cursor: not-allowed;
}

/* select chevron */
.select-wrap { position: relative; }
.select-wrap::after {
    content: "▾"; position: absolute; right: 14px; top: 50%;
    transform: translateY(-50%); color: var(--amber);
    pointer-events: none; font-size: 12px;
}
select {
    appearance: none; -webkit-appearance: none;
    cursor: pointer; padding-right: 34px;
}
select option { background: #15130d; color: var(--bone); }

.version-lock-note {
    display: inline-block; margin-top: 8px;
    font-family: var(--mono); font-size: 11px; letter-spacing: .5px;
    color: var(--amber-hot);
    text-shadow: 0 0 10px rgba(240,181,62,.35);
}

/* ---------- submit ---------- */
.register-btn {
    position: relative; overflow: hidden;
    width: 100%; margin-top: 6px;
    display: flex; align-items: baseline; justify-content: center; gap: 12px;
    padding: 15px;
    border: none; cursor: pointer;
    background: linear-gradient(180deg, var(--amber-hot), var(--amber));
    color: #16130b;
    clip-path: polygon(10px 0, 100% 0, calc(100% - 10px) 100%, 0 100%);
    transition: filter .2s, box-shadow .2s, transform .08s;
}
.register-btn .btn-label {
    font-family: var(--display); font-weight: 700; font-size: 18px;
    letter-spacing: 4px;
}
.register-btn .btn-sub {
    font-family: var(--mono); font-size: 11px; letter-spacing: 2px;
    opacity: .65;
}
.register-btn::after { /* sheen */
    content: ""; position: absolute; top: 0; left: -60%;
    width: 40%; height: 100%;
    background: linear-gradient(100deg, transparent, rgba(255,255,255,.55), transparent);
    transform: skewX(-20deg);
}
.register-btn:hover {
    filter: brightness(1.08);
    box-shadow: 0 0 26px rgba(240,181,62,.45);
}
.register-btn:hover::after { animation: sheen .7s ease; }
@keyframes sheen { to { left: 120%; } }
.register-btn:active { transform: translateY(1px); }
.register-btn:disabled {
    background: #4a4534; color: #8c866f; cursor: not-allowed;
    box-shadow: none; filter: none;
}
.register-btn:disabled::after { display: none; }

/* ---------- message readout ---------- */
.message {
    margin-top: 18px; padding: 11px 14px;
    font-family: var(--mono); font-size: 13px; letter-spacing: .3px;
    border-left: 3px solid var(--muted);
    background: rgba(0,0,0,.35);
    display: none;
}
.message::before { font-weight: bold; margin-right: 8px; }
.message.success {
    display: block; color: var(--green); border-left-color: var(--green);
    background: rgba(169,184,90,.08);
}
.message.success::before { content: "[ OK ]"; }
.message.error {
    display: block; color: var(--red); border-left-color: var(--red);
    background: rgba(193,84,60,.08);
}
.message.error::before { content: "[ ERR ]"; }
.message.warning {
    display: block; color: var(--amber-hot); border-left-color: var(--amber);
    background: rgba(217,154,43,.08);
}
.message.warning::before { content: "[ !! ]"; }

/* ---------- aux links (forgot password / back) ---------- */
.aux-links {
    margin-top: 16px; text-align: center;
}
.aux-link {
    font-family: var(--body); font-size: 13px; color: var(--tan);
    text-decoration: none; letter-spacing: .5px;
    transition: color .2s, text-shadow .2s;
}
.aux-link span {
    font-family: var(--mono); font-size: 10px; letter-spacing: 1px;
    color: var(--muted-dim); margin-left: 6px;
}
.aux-link:hover { color: var(--amber-hot); text-shadow: 0 0 10px rgba(240,181,62,.35); }
.aux-link:hover span { color: var(--amber); }

/* ---------- footer ---------- */
.formfoot {
    display: flex; align-items: center; gap: 8px;
    margin-top: 22px; padding-top: 14px;
    border-top: 1px dashed var(--line-solid);
    font-family: var(--mono); font-size: 10px; letter-spacing: 1.5px;
    color: var(--muted-dim); text-transform: uppercase;
}
.blink { margin-left: auto; color: var(--amber); animation: blink 1.1s steps(1) infinite; }
@keyframes blink { 50% { opacity: 0; } }

/* ---------- responsive ---------- */
@media (max-width: 540px) {
    .register-box { padding: 26px 22px 22px; }
    .brand-mark { font-size: 38px; }
    .verification-group { flex-direction: column; }
    .send-code-btn { width: 100%; padding: 11px; }
}

@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after { animation: none !important; }
    .form-group { opacity: 1; transform: none; }
}

/* ---- 实时校验提示（N2/N3） ---- */
.field-hint {
    display: inline-block;
    margin-top: 6px;
    font-size: 12px;
    font-family: "Share Tech Mono", monospace;
    letter-spacing: 0.5px;
}
.field-hint.ok { color: #7dc97f; }
.field-hint.err { color: #e06c5b; }

/* 软重置页：警示框 + 确认勾选 + 危险按钮 */
.reset-warn {
    margin: 4px 0 18px;
    padding: 12px 14px;
    font-family: var(--body);
    font-size: 13px;
    line-height: 1.6;
    color: var(--tan);
    background: #2a160f80;
    border: 1px solid var(--red);
    border-radius: 3px;
}
.reset-warn strong { color: var(--amber-hot); }
.confirm-check {
    display: flex;
    align-items: center;
    gap: 8px;
    font-family: var(--mono);
    font-size: 13px;
    color: var(--bone);
    cursor: pointer;
    user-select: none;
}
.confirm-check input { width: 16px; height: 16px; accent-color: var(--red); cursor: pointer; }
.register-btn.danger {
    background: linear-gradient(180deg, #b24632, #8e3324);
    border-color: var(--red);
}
.register-btn.danger:hover { background: linear-gradient(180deg, #c1543c, #9c3a29); }