:root{
  /* Theme */
  --pyml-bg:#0b0f12;
  --pyml-text:#ffffff;
  --pyml-sub:#cbd5e1;
  --pyml-border:#263041;

  /* Copper */
  --pyml-primary:#c97e2b;
  --pyml-primary-2:#ffb14a;

  /* Button gradient (original) */
  --pyml-grad-start:#ffb14a;
  --pyml-grad-end:#c97e2b;

  --pyml-shadow:0 10px 30px rgba(0,0,0,.55);

  /* Animations */
  --pyml-breathe-duration:4s;
  --pyml-breathe-ease:ease-in-out;
}

.pyml-overlay{
  position:fixed;inset:0;background:rgba(2,6,23,.60);
  backdrop-filter:blur(2px);z-index:9998;
}
.pyml-modal{
  position:fixed;inset:0;display:flex;align-items:center;justify-content:center;z-index:9999;
}

/* ===== Card: dark gradient + inner/outer shadows + glowing (breathing) ===== */
.pyml-card{
  position:relative;color:var(--pyml-text);
  width:min(94vw,560px);border-radius:16px;overflow:visible;z-index:1;
  background:linear-gradient(180deg,#11161a 0%,#0e1317 45%,#0c1014 70%,#0a0d12 85%,#07090c 100%);
  box-shadow:
    0 20px 50px rgba(0,0,0,.55),
    0  8px 20px rgba(0,0,0,.35),
    0  0 36px  8px rgba(201,126,43,.28),
    0  0 90px 28px rgba(201,126,43,.14);
  animation:pyml-glow-breathe var(--pyml-breathe-duration) var(--pyml-breathe-ease) infinite;
}

@keyframes pyml-glow-breathe{
  0%,100%{
    box-shadow:
      0 20px 50px rgba(0,0,0,.55),
      0  8px 20px rgba(0,0,0,.35),
      0  0 28px  6px rgba(201,126,43,.22),
      0  0 64px 18px rgba(201,126,43,.10);
  }
  50%{
    box-shadow:
      0 20px 50px rgba(0,0,0,.55),
      0  8px 20px rgba(0,0,0,.35),
      0  0 44px 12px rgba(201,126,43,.33),
      0  0 110px 36px rgba(201,126,43,.18);
  }
}

/* inner highlights */
.pyml-card::before{
  content:"";position:absolute;inset:0;pointer-events:none;border-radius:inherit;
  background:
    linear-gradient(180deg,rgba(255,255,255,.06),rgba(255,255,255,0) 18%),
    linear-gradient(0deg,rgba(0,0,0,.55),rgba(0,0,0,0) 38%);
}

/* ================= Tabs ================== */
.pyml-tabs{
  display:flex;align-items:center;border-bottom:1px solid var(--pyml-border);background:transparent;
}
.pyml-tab{
  flex:1 1 50%;appearance:none;border:0;background:transparent;color:#94a3b8;
  padding:14px 18px;font-weight:700;font-size:15px;cursor:pointer;
}
.pyml-tab.is-active{color:var(--pyml-text);box-shadow:inset 0 -2px 0 var(--pyml-primary);}
.pyml-panel{padding:18px 20px 20px}
.pyml-panel[hidden]{display:none !important}

/* ================= Form ================== */
.pyml-form{display:block}
.pyml-field{margin-bottom:12px}
.pyml-field label{display:block;font-size:13px;color:#e2e8f0;margin-bottom:6px}
.pyml-field input[type="text"],
.pyml-field input[type="email"],
.pyml-field input[type="password"]{
  width:100%;background:#0e1420;color:var(--pyml-text);
  border:1px solid var(--pyml-border);border-radius:10px;
  padding:10px 12px;font-size:14px;outline:none;
}
.pyml-field input::placeholder{color:#6b7a90}
.pyml-field input:focus{border-color:var(--pyml-primary);box-shadow:0 0 0 3px rgba(201,126,43,.22)}

.pyml-row{display:flex;align-items:center;justify-content:space-between;gap:10px}
.pyml-opts{margin-bottom:10px}
.pyml-remember{display:flex;align-items:center;gap:8px;color:#cdd5e1;font-size:13px}
.pyml-link{color:var(--pyml-primary-2);text-decoration:none}
.pyml-link:hover{opacity:.9}

/* toggle */
.pyml-toggle{
  appearance:none;border:0;background:transparent;color:var(--pyml-primary-2);
  cursor:pointer;font-size:12px;padding:2px 4px;border-radius:6px;
}
.pyml-toggle:hover{background:rgba(255,177,74,.08)}

.pyml-error{
  margin:8px 0 0;background:rgba(220,38,38,.15);border:1px solid rgba(248,113,113,.35);
  color:#fecaca;padding:10px 12px;border-radius:10px;font-size:13px;
}

/* ===== Button: original copper gradient + low-frequency shine ===== */
#pyml-modal .pyml-submit{
  position:relative;overflow:hidden; /* for shine */
  width:100%;appearance:none;border-radius:10px;
  border:1px solid #d28a3e !important;
  background:linear-gradient(180deg,var(--pyml-grad-start) 0%,var(--pyml-grad-end) 100%) !important;
  color:#ffffff !important;padding:12px 14px;font-weight:800;cursor:pointer;margin-top:12px;
  box-shadow:0 8px 18px rgba(201,126,43,.35), inset 0 1px 0 rgba(255,255,255,.25);
  transition:filter .15s ease, transform .02s ease, box-shadow .15s ease;
}
#pyml-modal .pyml-submit:hover{filter:brightness(1.05)}
#pyml-modal .pyml-submit:active{transform:translateY(1px)}
#pyml-modal .pyml-submit[aria-busy="true"]{opacity:.7;cursor:wait}

/* Shine (擦亮) — 低頻率、短暫掠過 */
#pyml-modal .pyml-submit::after{
  content:"";position:absolute;top:0;left:-160%;height:100%;width:42%;
  background:linear-gradient(75deg, rgba(255,255,255,0) 0%,
                                     rgba(255,255,255,.55) 45%,
                                     rgba(255,255,255,0) 75%);
  transform:skewX(-18deg);
  mix-blend-mode:screen;pointer-events:none;border-radius:inherit;
  animation:pyml-btn-shine 9s ease-in-out infinite; /* 低頻率 */
}

@keyframes pyml-btn-shine{
  0%,10%{ transform:skewX(-18deg) translateX(0); left:-160%; opacity:.0; }
  12%,14%{ left:120%; opacity:.9; }      /* 短暫掠過 */
  16%,100%{ left:120%; opacity:0; }      /* 其餘時間安靜 */
}

/* Switch text (register / back to login) */
.pyml-switch{margin-top:10px;font-size:12px;color:var(--pyml-sub)}
.pyml-switch a{color:var(--pyml-primary-2);text-decoration:none}
.pyml-switch a:hover{opacity:.9}

/* Accessibility: reduce motion */
@media (prefers-reduced-motion:reduce){
  .pyml-card{animation:none}
  #pyml-modal .pyml-submit::after{animation:none}
}

/* ================= Mobile ================= */
@media (max-width:480px){
  .pyml-card{width:94vw;border-radius:14px}
  .pyml-tab{padding:12px 14px}
  .pyml-panel{padding:16px}
}

/* ===== Button Shine：亮度稍降、頻率↑、速度再慢 ===== */
#pyml-modal .pyml-submit{ position:relative; overflow:hidden; }

#pyml-modal .pyml-submit::after{
  content:"";
  position:absolute;
  top:0; left:-160%;
  height:100%;
  width:50%; /* 掃過更寬但不刺眼 */
  background: linear-gradient(75deg,
              rgba(255,255,255,0)   0%,
              rgba(255,255,255,.65) 46%,  /* ↓ 亮度比上次低 */
              rgba(255,255,255,0)  76%);
  transform: skewX(-18deg);
  mix-blend-mode: screen;
  pointer-events:none;
  border-radius:inherit;

  /* 變慢：18s；頻率↑：同一輪做 2 次掃過 */
  animation: pyml-btn-shine-soft-slow 18s cubic-bezier(.22,.6,.2,1) infinite;
  opacity:0;
}

@keyframes pyml-btn-shine-soft-slow{
  /* 第一次掃過（慢） */
  0%   { left:-160%; opacity:0; }
  6%   { left:-160%; opacity:.70; }  /* 開始（亮度略降） */
  26%  { left: 120%; opacity:.70; }  /* 20% 時間慢慢掃到右邊 */
  30%  { left: 120%; opacity:0; }    /* 淡出 */

  /* 中段休息並重置到左側 */
  56%  { left:-160%; opacity:0; }

  /* 第二次掃過（同樣慢） */
  58%  { left:-160%; opacity:.70; }
  78%  { left: 120%; opacity:.70; }  /* 再慢慢掃一次 */
  82%  { left: 120%; opacity:0; }

  100% { left: 120%; opacity:0; }
}

/* 減少動態偏好時停用 */
@media (prefers-reduced-motion:reduce){
  #pyml-modal .pyml-submit::after{ animation:none; }
}

/* ==== Custom checkbox (記住我) ==== */
.pyml-remember{
  display:inline-flex; align-items:center; gap:8px;
  cursor:pointer; user-select:none;
}

.pyml-remember input{
  /* 隱藏原生，但保留可聚焦/可存取性 */
  position:absolute; opacity:0; width:1px; height:1px; margin:0;
}

.pyml-remember .pyml-box{
  width:18px; height:18px; border-radius:4px;
  border:1.5px solid #48566b; background:#0e1420;
  display:inline-block; position:relative;
  transition:border-color .15s ease, background .15s ease, box-shadow .15s ease;
}

/* 勾選狀態：銅橘漸層盒 + 白色勾 */
.pyml-remember.is-checked .pyml-box{
  border-color:#d28a3e;
  background:linear-gradient(180deg,#ffb14a 0%,#c97e2b 100%);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.28);
}

.pyml-remember .pyml-box::after{
  content:""; position:absolute; left:4px; top:0px;
  width:6px; height:10px; border-right:2px solid #fff; border-bottom:2px solid #fff;
  transform:rotate(45deg) scale(.6); opacity:0; transition:.15s ease;
}
.pyml-remember.is-checked .pyml-box::after{
  opacity:1; transform:rotate(45deg) scale(1);
}

/* 鍵盤焦點可視化 */
.pyml-remember:focus-within .pyml-box{
  box-shadow:0 0 0 3px rgba(201,126,43,.28);
}

.pyml-remember .pyml-remember-text{
  color:#cdd5e1; font-size:13px;
}

/* === 防止記住我 label 吃到下一行範圍 === */
.pyml-opts{ display:flex; align-items:center; justify-content:space-between; gap:10px; position:relative; }
.pyml-remember{
  position:relative; display:inline-flex; align-items:center; gap:8px;
  flex:0 0 auto; cursor:pointer; user-select:none;
}

/* 把隱藏 checkbox 固定在 label 內，避免浮到其它區域 */
.pyml-remember input{
  position:absolute; left:0; top:0; width:1px; height:1px; margin:0; opacity:0; pointer-events:none;
}

/* 保證按鈕在最上層並可點 */
#pyml-modal .pyml-submit{
  position:relative; z-index:10; pointer-events:auto;
}

/* 保證任何裝飾層不攔截點擊 */
#pyml-modal .pyml-submit::before,
#pyml-modal .pyml-submit::after{ pointer-events:none; }
.pyml-card::before{ pointer-events:none; }