/* ============================================================
   星海 · Star Sea
   styles.css —— 认证界面 + 全局基础样式
   （游戏内界面样式在登录后由 game.css 下发）
   ============================================================ */

:root {
  --bg: #03050c;
  --panel: rgba(13, 19, 36, 0.78);
  --panel-2: rgba(18, 26, 48, 0.62);
  --line: rgba(96, 158, 255, 0.18);
  --line-2: rgba(96, 158, 255, 0.34);
  --txt: #dce6ff;
  --txt-2: #93a3c9;
  --txt-3: #63719a;
  --cyan: #4fd1ff;
  --violet: #a06bff;
  --gold: #ffcb6b;
  --green: #3ddc97;
  --red: #ff6b8a;
  --shadow: 0 18px 50px rgba(0, 0, 0, 0.55);
  --radius: 14px;
}

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

html, body {
  height: 100%;
  background: var(--bg);
  color: var(--txt);
  font-family: "Segoe UI", "PingFang SC", "Microsoft YaHei", system-ui, -apple-system, sans-serif;
  font-size: 14px;
  -webkit-font-smoothing: antialiased;
  overflow: hidden;
}

/* ---------------- 背景层 ---------------- */

#starfield {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
  background:
    radial-gradient(1200px 760px at 10% -12%, rgba(50, 92, 200, 0.22), transparent 62%),
    radial-gradient(980px 680px at 94% 6%, rgba(128, 64, 220, 0.18), transparent 60%),
    radial-gradient(900px 900px at 46% 120%, rgba(20, 130, 170, 0.14), transparent 62%),
    linear-gradient(180deg, #03050c, #05080f 55%, #02040a);
}

.aurora {
  position: fixed;
  z-index: 1;
  pointer-events: none;
  border-radius: 50%;
  filter: blur(90px);
  opacity: 0.5;
}
.aurora.a1 {
  width: 620px; height: 620px;
  left: -180px; top: -160px;
  background: radial-gradient(circle, rgba(79, 209, 255, 0.30), transparent 70%);
  animation: drift1 26s ease-in-out infinite;
}
.aurora.a2 {
  width: 560px; height: 560px;
  right: -160px; bottom: -180px;
  background: radial-gradient(circle, rgba(160, 107, 255, 0.28), transparent 70%);
  animation: drift2 32s ease-in-out infinite;
}
@keyframes drift1 {
  0%, 100% { transform: translate(0, 0) scale(1); }
  50% { transform: translate(70px, 50px) scale(1.14); }
}
@keyframes drift2 {
  0%, 100% { transform: translate(0, 0) scale(1.06); }
  50% { transform: translate(-60px, -46px) scale(1); }
}

.vignette {
  position: fixed;
  inset: 0;
  z-index: 2;
  pointer-events: none;
  background: radial-gradient(circle at 50% 45%, transparent 42%, rgba(0, 0, 0, 0.62) 100%);
}

.grain {
  position: fixed;
  inset: 0;
  z-index: 2;
  pointer-events: none;
  opacity: 0.035;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='140' height='140'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.85' numOctaves='3'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

/* ---------------- 基础控件（全局共享） ---------------- */

.hidden { display: none !important; }

.btn {
  font: inherit;
  font-weight: 600;
  letter-spacing: 0.06em;
  border: 1px solid var(--line-2);
  background: var(--panel-2);
  color: var(--txt);
  padding: 9px 16px;
  border-radius: 10px;
  cursor: pointer;
  transition: all 0.18s ease;
  white-space: nowrap;
}
.btn:hover { border-color: var(--cyan); color: #fff; box-shadow: 0 0 0 3px rgba(79, 209, 255, 0.10); }
.btn:active { transform: translateY(1px); }
.btn:disabled { opacity: 0.45; cursor: not-allowed; }
.btn.primary {
  background: linear-gradient(120deg, rgba(79, 209, 255, 0.92), rgba(160, 107, 255, 0.92));
  border-color: transparent;
  color: #05070f;
  font-weight: 800;
}
.btn.primary:hover { box-shadow: 0 8px 26px rgba(79, 209, 255, 0.35); }
.btn.ok { border-color: rgba(61, 220, 151, 0.5); color: var(--green); }
.btn.ok:hover { background: rgba(61, 220, 151, 0.12); border-color: var(--green); box-shadow: none; }
.btn.no { border-color: rgba(255, 107, 138, 0.45); color: var(--red); }
.btn.no:hover { background: rgba(255, 107, 138, 0.12); border-color: var(--red); box-shadow: none; }
.btn.ghost { background: transparent; color: var(--txt-2); }
.btn.ghost:hover { color: var(--txt); }
.btn.sm { padding: 6px 11px; font-size: 12px; border-radius: 8px; letter-spacing: 0.04em; }

input, select, textarea {
  font: inherit;
  width: 100%;
  background: rgba(6, 10, 20, 0.85);
  border: 1px solid var(--line);
  color: var(--txt);
  border-radius: 10px;
  padding: 10px 12px;
  outline: none;
  transition: border-color 0.18s, box-shadow 0.18s;
}
input:focus, select:focus, textarea:focus {
  border-color: var(--cyan);
  box-shadow: 0 0 0 3px rgba(79, 209, 255, 0.12);
}
input::placeholder, textarea::placeholder { color: var(--txt-3); }

/* ============================================================
   认证界面
   ============================================================ */

.screen { display: none; position: relative; z-index: 3; height: 100%; }
#screen-login.active { display: block; }

.login-wrap {
  position: relative;
  z-index: 4;
  height: 100%;
  max-width: 1520px;
  margin: 0 auto;
  padding: 46px clamp(24px, 5vw, 88px) 68px;
  display: grid;
  grid-template-columns: minmax(0, 1fr) 452px;
  align-items: center;
  gap: clamp(32px, 5vw, 76px);
}

/* ---- 左栏 ---- */

.login-intro {
  display: flex;
  flex-direction: column;
  gap: clamp(20px, 3vh, 30px);
  max-width: 640px;
  animation: fadeUp 0.7s 0.05s both;
}

.crest { width: clamp(96px, 11vh, 132px); height: clamp(96px, 11vh, 132px); }
.crest svg { width: 100%; height: 100%; overflow: visible; }
.crest .r1 { transform-origin: 100px 100px; animation: spin 32s linear infinite; }
.crest .r2 { transform-origin: 100px 100px; animation: spin 22s linear infinite reverse; }
.crest .r3 { transform-origin: 100px 100px; animation: spin 14s linear infinite; }
.crest .coreglow { animation: corePulse 3.6s ease-in-out infinite; }
.crest .pulse { transform-origin: 100px 100px; animation: ringPulse 3.2s ease-out infinite; }
.crest .sat { transform-origin: 100px 100px; animation: spin 32s linear infinite; }
.crest .sat2 { transform-origin: 100px 100px; animation: spin 22s linear infinite reverse; }

@keyframes spin { to { transform: rotate(360deg); } }
@keyframes corePulse { 0%, 100% { opacity: .75; } 50% { opacity: 1; } }
@keyframes ringPulse {
  0% { transform: scale(.75); opacity: .7; }
  100% { transform: scale(2.1); opacity: 0; }
}

.intro-text h1 {
  font-size: clamp(42px, 6.2vw, 76px);
  font-weight: 800;
  letter-spacing: 0.16em;
  line-height: 1.06;
  background: linear-gradient(102deg, #ffffff 6%, #9fe6ff 38%, var(--cyan) 55%, var(--violet) 92%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  filter: drop-shadow(0 0 34px rgba(79, 209, 255, 0.30));
}
.intro-text .en {
  margin-top: 12px;
  font-size: clamp(9px, 1vw, 11px);
  letter-spacing: 0.5em;
  color: var(--txt-3);
}
.intro-text .lede {
  margin-top: 18px;
  font-size: clamp(13px, 1.1vw, 15px);
  line-height: 1.85;
  color: var(--txt-2);
  max-width: 460px;
}

.feats {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
  max-width: 470px;
}
.feats li {
  display: flex;
  align-items: center;
  gap: 11px;
  padding: 11px 13px;
  border: 1px solid var(--line);
  border-radius: 11px;
  background: linear-gradient(135deg, rgba(79, 209, 255, 0.055), rgba(160, 107, 255, 0.035));
  transition: border-color 0.2s, transform 0.2s, background 0.2s;
}
.feats li:hover {
  border-color: var(--line-2);
  transform: translateY(-2px);
  background: linear-gradient(135deg, rgba(79, 209, 255, 0.11), rgba(160, 107, 255, 0.07));
}
.feats .fi {
  flex: 0 0 30px;
  height: 30px;
  display: grid;
  place-items: center;
  border-radius: 8px;
  background: rgba(79, 209, 255, 0.12);
  color: var(--cyan);
  font-size: 13px;
}
.feats .ft { display: flex; flex-direction: column; gap: 2px; min-width: 0; }
.feats .ft b { font-size: 12.5px; font-weight: 700; letter-spacing: 0.06em; }
.feats .ft i { font-style: normal; font-size: 11px; color: var(--txt-3); letter-spacing: 0.03em; }

.status-strip {
  display: flex;
  align-items: center;
  gap: 11px;
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--txt-3);
  flex-wrap: wrap;
}
.status-strip .live {
  width: 7px; height: 7px; border-radius: 50%;
  background: var(--green);
  box-shadow: 0 0 10px var(--green);
  animation: pulse 2.2s infinite;
}
.status-strip .sep { width: 1px; height: 11px; background: var(--line-2); }
@keyframes pulse { 0%, 100% { opacity: 1; } 50% { opacity: 0.3; } }

/* ---- 右栏：认证面板 ---- */

.login-panel {
  position: relative;
  z-index: 4;
  padding: 34px 34px 26px;
  border-radius: 20px;
  border: 1px solid var(--line-2);
  /* 不透明面板：不透视后方任何内容 */
  background:
    linear-gradient(180deg, #0d1426 0%, #090e1c 55%, #070b17 100%);
  box-shadow:
    0 34px 90px rgba(0, 0, 0, 0.68),
    0 0 0 1px rgba(255, 255, 255, 0.03) inset,
    0 1px 0 rgba(255, 255, 255, 0.06) inset;
  overflow: hidden;
  animation: fadeUp 0.7s 0.16s both;
}
.login-panel::before {
  content: "";
  position: absolute;
  top: 0; left: 0; right: 0; height: 1px;
  background: linear-gradient(90deg, transparent, var(--cyan), var(--violet), transparent);
}

.cx {
  position: absolute;
  width: 13px; height: 13px;
  border: 0 solid var(--cyan);
  opacity: 0.75;
}
.cx.tl { top: 9px; left: 9px; border-top-width: 1px; border-left-width: 1px; }
.cx.tr { top: 9px; right: 9px; border-top-width: 1px; border-right-width: 1px; }
.cx.bl { bottom: 9px; left: 9px; border-bottom-width: 1px; border-left-width: 1px; }
.cx.br { bottom: 9px; right: 9px; border-bottom-width: 1px; border-right-width: 1px; }

.panel-scan {
  position: absolute;
  left: 0; right: 0;
  height: 130px;
  pointer-events: none;
  background: linear-gradient(180deg, transparent, rgba(79, 209, 255, 0.055), transparent);
  animation: scanY 7.5s linear infinite;
}
@keyframes scanY { 0% { top: -130px; } 100% { top: 100%; } }

.lp-head {
  display: flex;
  align-items: center;
  gap: 13px;
  padding-bottom: 20px;
  margin-bottom: 22px;
  border-bottom: 1px solid var(--line);
  position: relative;
}
.lp-mark {
  width: 38px; height: 38px;
  display: grid; place-items: center;
  border-radius: 10px;
  background: linear-gradient(135deg, rgba(79, 209, 255, 0.18), rgba(160, 107, 255, 0.14));
  border: 1px solid var(--line-2);
  color: var(--cyan);
  font-size: 16px;
}
.lp-title { font-size: 15.5px; font-weight: 700; letter-spacing: 0.16em; }
.lp-sub { margin-top: 5px; font-size: 9px; letter-spacing: 0.34em; color: var(--txt-3); }

.fld { display: block; margin-bottom: 17px; }
.fld .fl {
  display: block;
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--txt-2);
  margin-bottom: 8px;
}

.in-wrap { position: relative; display: flex; align-items: center; }
.in-wrap .in-ic {
  position: absolute;
  left: 14px;
  font-size: 12px;
  color: var(--txt-3);
  pointer-events: none;
  transition: color 0.18s;
}
.in-wrap input {
  padding: 13px 42px 13px 40px;
  border-radius: 12px;
  background: rgba(4, 7, 15, 0.9);
  letter-spacing: 0.04em;
}
.in-wrap:focus-within .in-ic { color: var(--cyan); }

.in-wrap .eye {
  position: absolute;
  right: 8px;
  width: 30px; height: 30px;
  display: grid; place-items: center;
  border: none;
  background: transparent;
  color: var(--txt-3);
  cursor: pointer;
  border-radius: 8px;
  font-size: 13px;
  transition: color 0.16s, background 0.16s;
}
.in-wrap .eye:hover { color: var(--cyan); background: rgba(79, 209, 255, 0.09); }

.btn-enter {
  position: relative;
  width: 100%;
  margin-top: 8px;
  padding: 15px;
  border: none;
  border-radius: 12px;
  background: linear-gradient(120deg, #46c8ff, #8f7bff 55%, #9a63ff);
  color: #04060d;
  font: inherit;
  font-size: 15px;
  font-weight: 800;
  letter-spacing: 0.28em;
  cursor: pointer;
  overflow: hidden;
  transition: box-shadow 0.22s, transform 0.12s, filter 0.2s;
}
.btn-enter .bt-txt { position: relative; z-index: 2; margin-left: 0.28em; }
.btn-enter:hover { box-shadow: 0 12px 38px rgba(79, 209, 255, 0.42); }
.btn-enter:active { transform: translateY(1px); }
.btn-enter:disabled { cursor: progress; filter: saturate(0.7) brightness(0.92); }
.btn-enter::after {
  content: "";
  position: absolute;
  top: 0; left: -130%;
  width: 55%; height: 100%;
  background: linear-gradient(100deg, transparent, rgba(255, 255, 255, 0.55), transparent);
  transition: left 0.62s ease;
}
.btn-enter:hover::after { left: 135%; }
.btn-enter.busy::after { animation: sweep 1.1s linear infinite; }
@keyframes sweep { 0% { left: -130%; } 100% { left: 135%; } }

.login-msg {
  min-height: 20px;
  margin-top: 14px;
  font-size: 12.5px;
  line-height: 1.6;
  text-align: center;
  letter-spacing: 0.03em;
}
.login-msg.err { color: var(--red); }
.login-msg.ok { color: var(--green); }
.login-msg.info { color: var(--gold); }
.login-msg.warn { color: var(--red); }
.login-msg:not(:empty) { animation: fadeUp 0.28s both; }

.lp-foot {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-top: 16px;
  padding-top: 15px;
  border-top: 1px solid var(--line);
}
.lf-line { flex: 1; height: 1px; background: linear-gradient(90deg, transparent, var(--line-2), transparent); }
.lf-txt { font-size: 10.5px; color: var(--txt-3); letter-spacing: 0.04em; text-align: center; line-height: 1.5; }

.login-foot {
  position: fixed;
  left: 0; right: 0; bottom: 18px;
  z-index: 4;
  text-align: center;
  font-size: 9.5px;
  letter-spacing: 0.36em;
  color: rgba(99, 113, 154, 0.55);
  pointer-events: none;
}

@keyframes fadeUp { from { opacity: 0; transform: translateY(16px); } to { opacity: 1; transform: none; } }

/* ============================================================
   接入引导动画
   ============================================================ */

.boot-overlay {
  position: fixed;
  inset: 0;
  z-index: 80;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 26px;
  background: rgba(3, 5, 12, 0.95);
  animation: fadeIn 0.2s both;
}
@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }

.boot-ring { position: relative; width: 112px; height: 112px; }
.boot-ring span { position: absolute; border-radius: 50%; }
.boot-ring .br-a {
  inset: 0;
  border: 2px solid transparent;
  border-top-color: var(--cyan);
  animation: spin 0.95s linear infinite;
}
.boot-ring .br-b {
  inset: 13px;
  border: 2px solid transparent;
  border-right-color: var(--violet);
  animation: spin 1.5s linear infinite reverse;
}
.boot-ring .br-c {
  inset: 27px;
  border: 1px dashed rgba(79, 209, 255, 0.45);
  animation: spin 2.4s linear infinite;
}
.boot-ring .br-core {
  inset: 0;
  display: grid;
  place-items: center;
  color: var(--cyan);
  font-size: 19px;
  animation: corePulse 1.8s ease-in-out infinite;
}

.boot-title { font-size: 13px; letter-spacing: 0.32em; color: var(--txt-2); }

.boot-steps {
  display: flex;
  flex-direction: column;
  gap: 7px;
  min-height: 74px;
  text-align: center;
}
.boot-step {
  font-size: 11.5px;
  letter-spacing: 0.14em;
  color: var(--txt-3);
  opacity: 0;
  transform: translateY(6px);
  transition: opacity 0.3s, transform 0.3s;
}
.boot-step.in { opacity: 1; transform: none; }
.boot-step.in::before { content: "› "; color: var(--cyan); }

/* ============================================================
   响应式
   ============================================================ */

@media (max-width: 1040px) {
  .login-wrap {
    grid-template-columns: minmax(0, 1fr);
    align-content: center;
    gap: 28px;
    padding-top: 34px;
    padding-bottom: 54px;
    overflow-y: auto;
  }
  .login-intro { max-width: none; align-items: flex-start; }
  .crest { width: 82px; height: 82px; }
  .intro-text h1 { font-size: clamp(34px, 9vw, 50px); letter-spacing: 0.12em; }
  .intro-text .lede { margin-top: 12px; font-size: 12.5px; }
  .feats { display: none; }
  .login-panel { padding: 28px 24px 22px; }
  .login-foot { display: none; }
}

@media (max-width: 420px) {
  .login-wrap { padding-left: 16px; padding-right: 16px; }
  .status-strip { font-size: 10px; gap: 8px; }
}

@media (max-height: 700px) and (min-width: 1041px) {
  .feats { display: none; }
  .intro-text .lede { display: none; }
}