/* auth-style.css — 既存サイトのデザイントークンを継承した共通スタイル */
:root {
  --bg:#DDDDDB; --bg-alt:#E6E5E2; --surface:#F7F6F4;
  --ink:#191919; --ink-mid:#3B3B3B; --ink-muted:#696969;
  --silver:#A8A8A8; --silver-lt:#C8C7C3;
  --gold-rim:rgba(215,192,120,0.42);
  --font:"Noto Serif JP","Yu Mincho","游明朝",Georgia,serif;
  --ease:cubic-bezier(.4,0,.2,1);
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
body{font-family:var(--font);background:var(--bg);color:var(--ink);-webkit-font-smoothing:antialiased;min-height:100vh}

header{position:fixed;top:0;left:0;right:0;z-index:400;padding:15px 48px;display:flex;align-items:center;justify-content:space-between;background:linear-gradient(135deg,rgba(160,118,30,0.97) 0%,rgba(196,154,48,0.97) 40%,rgba(174,132,36,0.97) 100%);box-shadow:0 2px 20px rgba(140,100,20,0.25)}
.logo{font-size:.88rem;font-weight:300;letter-spacing:.45em;color:rgba(255,248,220,0.95);text-decoration:none}
.logo-sub{display:block;font-size:.55rem;letter-spacing:.55em;color:rgba(255,238,180,0.75);margin-top:3px}
nav{display:flex;gap:30px;flex-wrap:wrap}
nav a{font-size:.62rem;letter-spacing:.3em;color:rgba(255,238,180,0.78);text-decoration:none}
nav a:hover{color:rgba(255,255,220,1)}

.wrap{min-height:100vh;display:flex;flex-direction:column;align-items:center;justify-content:center;padding:140px 24px 60px}
.panel{width:100%;max-width:460px;background:var(--surface);border:1px solid var(--silver-lt);padding:40px 44px;box-shadow:0 2px 40px rgba(0,0,0,0.04);position:relative}
.c-orn{position:absolute;width:16px;height:16px;border-color:var(--silver-lt);border-style:solid}
.c-orn.tl{top:14px;left:14px;border-width:1px 0 0 1px}
.c-orn.tr{top:14px;right:14px;border-width:1px 1px 0 0}
.c-orn.bl{bottom:14px;left:14px;border-width:0 0 1px 1px}
.c-orn.br{bottom:14px;right:14px;border-width:0 1px 1px 0}
.panel-title{font-size:.9rem;font-weight:300;letter-spacing:.4em;text-align:center;color:var(--ink-mid)}
.panel-sub{font-size:.55rem;letter-spacing:.5em;color:var(--ink-muted);text-align:center;margin-top:8px;line-height:1.9}

.field{display:flex;flex-direction:column;gap:7px;margin-top:18px}
.field label{font-size:.58rem;letter-spacing:.4em;color:var(--ink-muted)}
.field input{font-family:var(--font);font-size:.82rem;letter-spacing:.1em;padding:9px 12px;background:var(--bg);border:1px solid var(--silver-lt);color:var(--ink);outline:none;-webkit-appearance:none;appearance:none}
.field input:focus{border-color:var(--silver)}
.field input::placeholder{color:var(--silver)}

.btn{display:block;width:100%;margin-top:24px;padding:13px;border:1px solid var(--ink);background:transparent;font-family:var(--font);font-size:.7rem;letter-spacing:.5em;color:var(--ink);cursor:pointer;text-align:center;text-decoration:none;position:relative;overflow:hidden}
.btn::after{content:"";position:absolute;inset:0;background:var(--ink);transform:scaleX(0);transform-origin:left;transition:transform .4s var(--ease);z-index:0}
.btn span{position:relative;z-index:1;transition:color .4s}
.btn:hover::after{transform:scaleX(1)}
.btn:hover span{color:#fff}
.btn:hover:not(:has(span)){color:#fff}
.btn.primary{background:linear-gradient(135deg,#A0761E,#C49A30,#AE8424);border-color:#A0761E;color:#fff}
.btn.primary::after{display:none}
.btn.primary:hover{filter:brightness(1.06)}
.btn:disabled{opacity:.4;cursor:not-allowed}
.btn:disabled::after{display:none}

.switch-line{text-align:center;margin-top:18px;font-size:.62rem;letter-spacing:.1em;color:var(--ink-muted)}
.switch-line a{color:var(--ink-mid);text-decoration:underline}

.msg{font-size:.65rem;letter-spacing:.08em;line-height:1.9;text-align:center;margin-top:14px;min-height:1.4em;color:var(--ink-muted)}
.msg.warn{color:#9E3A3A}
.msg.ok{color:#3A7A4E}

.status-row{display:flex;justify-content:space-between;font-size:.7rem;letter-spacing:.15em;padding:10px 0;border-bottom:1px solid var(--silver-lt)}
.status-row span:first-child{color:var(--ink-muted);letter-spacing:.4em}
.badge{display:inline-block;padding:2px 10px;font-size:.58rem;letter-spacing:.25em;border:1px solid var(--silver-lt)}
.badge.trialing{color:#A0761E;border-color:#A0761E}
.badge.active{color:#3A7A4E;border-color:#3A7A4E}
.badge.past_due,.badge.canceled,.badge.none{color:#9E3A3A;border-color:#9E3A3A}

.legal-body{max-width:680px;margin:0 auto;padding:140px 24px 80px;font-size:.78rem;line-height:2.2;color:var(--ink-mid)}
.legal-body h1{font-size:1.05rem;font-weight:300;letter-spacing:.42em;margin-bottom:34px;color:var(--ink-mid)}
.legal-body h2{font-size:.72rem;font-weight:300;letter-spacing:.32em;color:var(--ink-mid);text-transform:none}
.legal-body table{width:100%;border-collapse:collapse;margin-top:10px}
.legal-body th,.legal-body td{text-align:left;padding:10px;border-bottom:1px solid var(--silver-lt);font-size:.72rem;vertical-align:top}
.legal-body th{width:34%;color:var(--ink-muted);font-weight:300;letter-spacing:.12em}
.legal-body ul{margin:14px 0 14px 1.5em}
.legal-body li{margin-bottom:10px;line-height:2}

.trial-note{background:var(--bg-alt);border:1px solid var(--silver-lt);padding:16px 20px;font-size:.65rem;line-height:2;color:var(--ink-mid);margin-top:20px}

/* ═══ 4層プランカード（2026-07-02追加） ═══ */
.interval-toggle{display:flex;justify-content:center;gap:0;margin:26px auto 0;max-width:280px;border:1px solid var(--silver-lt);background:var(--bg)}
.interval-toggle button{flex:1;padding:10px 8px;font-family:var(--font);font-size:.62rem;letter-spacing:.25em;background:transparent;border:none;color:var(--ink-muted);cursor:pointer;transition:background .25s,color .25s}
.interval-toggle button.active{background:linear-gradient(135deg,#A0761E,#C49A30,#AE8424);color:#fff}
.interval-note{text-align:center;font-size:.58rem;letter-spacing:.1em;color:var(--ink-muted);margin-top:10px}

.plan-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:18px;margin-top:28px}
@media(max-width:760px){.plan-grid{grid-template-columns:1fr}}
.plan-card{position:relative;background:var(--surface);border:1px solid var(--silver-lt);padding:26px 20px;text-align:center;cursor:pointer;transition:border-color .25s,box-shadow .25s;display:flex;flex-direction:column}
.plan-card:hover{border-color:var(--silver)}
.plan-card.selected{border-color:#A0761E;box-shadow:0 0 0 1px #A0761E,0 8px 24px rgba(160,118,30,0.15)}
.plan-card .plan-name{font-size:.72rem;letter-spacing:.3em;color:var(--ink-mid);font-weight:400}
.plan-card .plan-name-en{font-size:.5rem;letter-spacing:.2em;color:var(--ink-muted);margin-top:4px}
.plan-card .plan-price{font-size:1.5rem;letter-spacing:.05em;color:var(--ink);margin-top:16px;font-weight:300}
.plan-card .plan-price small{font-size:.55rem;letter-spacing:.1em;color:var(--ink-muted)}
.plan-card .plan-yearly-note{font-size:.55rem;letter-spacing:.05em;color:#A0761E;margin-top:4px;min-height:1.4em}
.plan-card .plan-desc{font-size:.62rem;letter-spacing:.06em;line-height:1.9;color:var(--ink-muted);margin-top:14px;flex:1}
.plan-card .plan-radio{width:16px;height:16px;border:1px solid var(--silver);border-radius:50%;margin:16px auto 0;position:relative}
.plan-card.selected .plan-radio::after{content:"";position:absolute;inset:3px;border-radius:50%;background:#A0761E}

/* ═══ HAMBURGER BUTTON ═══ */
.hamburger{display:none;flex-direction:column;justify-content:center;align-items:center;gap:5px;width:38px;height:38px;background:transparent;border:none;cursor:pointer;padding:4px;margin-left:20px;flex-shrink:0;z-index:500}
.hamburger span{display:block;width:22px;height:1px;background:rgba(255,238,180,0.92);transition:transform .35s cubic-bezier(.4,0,.2,1),opacity .25s;transform-origin:center}
.hamburger.open span:nth-child(1){transform:translateY(6px) rotate(45deg)}
.hamburger.open span:nth-child(2){opacity:0;transform:scaleX(0)}
.hamburger.open span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}
/* ═══ MOBILE MENU スライドダウン ═══ */
.mobile-menu{position:fixed;top:56px;left:0;right:0;z-index:380;background:linear-gradient(180deg,rgba(155,112,24,0.99) 0%,rgba(130,92,16,0.99) 100%);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border-bottom:1px solid rgba(220,180,80,0.35);box-shadow:0 8px 32px rgba(80,50,0,0.35);display:flex;flex-direction:column;gap:0;transform:translateY(-110%);transition:transform .38s cubic-bezier(.4,0,.2,1);visibility:hidden;pointer-events:none}
.mobile-menu.open{transform:translateY(0);visibility:visible;pointer-events:auto}
.mobile-menu a{display:block;padding:17px 28px;font-size:.78rem;letter-spacing:.42em;color:rgba(255,238,180,0.88);text-decoration:none;border-bottom:1px solid rgba(220,180,80,0.15);transition:color .2s,background .2s}
.mobile-menu a:last-child{border-bottom:none}
.mobile-menu a:hover,.mobile-menu a:active{color:rgba(255,252,220,1);background:rgba(255,200,60,0.1)}
@media(max-width:768px){
  header{padding:14px 20px}
  nav{display:none}
  .hamburger{display:flex!important}
}