/* /assets/css/zerogram.css */

/* ---------- Brand tokens ---------- */
:root{
  --bg: #050506;
  --panel: rgba(255,255,255,0.02);
  --text: #F5F5F7;
  --muted: rgba(245,245,247,0.65);

  /* 브랜드 포인트 컬러(여기만 바꾸면 전역 변경됨) */
  --accent: #7C3AED;      /* 보라 (예시) */
  --accent-2: #5B21B6;

  --line: rgba(255,255,255,0.20);
  --line-2: rgba(255,255,255,0.12);

  --radius: 18px;
  --shadow: 0 18px 60px rgba(0,0,0,0.55);

  --font: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, "Helvetica Neue", Arial, "Apple SD Gothic Neo", "Noto Sans KR", sans-serif;
}

/* ---------- Base ---------- */
*{ box-sizing:border-box; }
html,body{ height:100%; }
body{
  margin:0;
  font-family: var(--font);
  background: radial-gradient(1000px 700px at 50% -20%, rgba(124,58,237,0.18), transparent 55%),
              radial-gradient(900px 600px at 100% 20%, rgba(255,255,255,0.05), transparent 55%),
              var(--bg);
  color: var(--text);
}

/* ---------- Layout helpers ---------- */
.zg-auth{
  min-height:100%;
  display:flex;
  align-items:center;
  justify-content:center;
  padding:48px 18px;
}

.zg-auth-card{
  width:min(520px, 100%);
  margin:0 auto;
  padding:42px 34px 30px;
  border-radius: var(--radius);
  background: rgba(0,0,0,0.35);
  border: 1px solid var(--line-2);
  box-shadow: var(--shadow);
  backdrop-filter: blur(10px);
}

.zg-auth-shell{
  width:min(560px, 100%);
  margin:0 auto;
}

.zg-brand-top{
  display:flex;
  align-items:center;
  justify-content:center;
  margin-bottom: 26px;
}

.zg-brand-top img{
  height: 44px;
  width:auto;
  opacity:0.92;
}

.zg-title{
  margin: 0 0 6px;
  font-size: 40px;
  line-height: 1.05;
  font-weight: 800;
  letter-spacing: -0.03em;
  text-align:left;
}

.zg-sub{
  margin: 0 0 26px;
  color: var(--muted);
  font-size: 14px;
}

.zg-sub a{
  color: var(--accent);
  text-decoration:none;
}
.zg-sub a:hover{ text-decoration:underline; }

/* ---------- Form ---------- */
.zg-form{
  display:flex;
  flex-direction:column;
  gap: 18px;
}

.zg-field label{
  display:block;
  font-size: 13px;
  color: var(--muted);
  margin-bottom: 10px;
  letter-spacing: 0.02em;
}

.zg-input{
  width:100%;
  background: transparent;
  color: var(--text);
  border: none;
  border-bottom: 2px solid var(--line);
  padding: 10px 0 12px;
  font-size: 18px;
  outline:none;
}

.zg-input::placeholder{
  color: rgba(245,245,247,0.25);
}

.zg-input:focus{
  border-bottom-color: var(--accent);
}

/* ---------- Checkbox row ---------- */
.zg-row{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  margin-top: 6px;
}

.zg-check{
  display:flex;
  align-items:center;
  gap:10px;
  color: var(--muted);
  font-size: 13px;
}

.zg-check input{
  width: 16px;
  height: 16px;
  accent-color: var(--accent);
}

/* ---------- Button ---------- */
.zg-btn{
  width:100%;
  border-radius: 14px;
  border: 1px solid var(--line);
  background: transparent;
  color: var(--text);
  text-decoration: none;
  padding: 14px 14px;
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.04em;
  cursor:pointer;
  transition: transform .04s ease, border-color .2s ease, background .2s ease;
}

.zg-btn:hover{
  border-color: rgba(255,255,255,0.35);
  background: rgba(255,255,255,0.04);
}

.zg-btn:active{ transform: translateY(1px); }

.zg-btn--secondary{
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: rgba(255,255,255,0.04);
}

.zg-btn--secondary:hover{
  background: rgba(255,255,255,0.08);
}

.zg-secondary-cta{
  margin-top: 14px;
}

.zg-link{
  color: var(--accent);
  text-decoration:none;
  font-size: 13px;
}
.zg-link:hover{ text-decoration:underline; }

/* ---------- Alerts ---------- */
.zg-alert{
  padding: 12px 14px;
  border-radius: 12px;
  border: 1px solid var(--line-2);
  background: rgba(255,255,255,0.03);
  color: var(--muted);
  font-size: 13px;
}
.zg-alert.error{
  border-color: rgba(239,68,68,0.35);
  background: rgba(239,68,68,0.08);
  color: rgba(255,255,255,0.85);
}

/* ---------- Footer mark ---------- */
.zg-footer{
  margin-top: 26px;
  text-align:center;
  color: rgba(245,245,247,0.35);
  font-size: 14px;
  letter-spacing: 0.08em;
  text-transform: lowercase;
}

.zg-gate-back-wrap{
  margin-top: 14px;
  text-align:center;
}

.zg-gate-back{
  color: rgba(245,245,247,0.62);
  font-size: 13px;
  text-decoration:none;
}

.zg-gate-back:hover{
  color: #ffffff;
  text-decoration:underline;
}

.zg-auth-showcase,
.zg-auth-dots,
.zg-auth-slide-meta{
  display:none;
}

.zg-auth--gate .zg-auth-card{
  width:min(460px, 100%);
  margin: 0 auto;
}

body.zg-auth-page--gate{
  background:
    radial-gradient(860px 560px at 50% 50%, rgba(255,255,255,0.05), transparent 62%),
    radial-gradient(1200px 760px at 100% 0%, rgba(124,58,237,0.12), transparent 60%),
    var(--bg);
}

.zg-auth--gate .zg-auth-card{
  position: relative;
  isolation: isolate;
  overflow: visible;
}

.zg-auth--gate .zg-auth-card::before{
  content:'';
  position:absolute;
  inset:-150px;
  z-index:-2;
  pointer-events:none;
  opacity:.34;
  background:
    radial-gradient(circle at 12% 58%, rgba(255,255,255,.95) 0 1.2px, transparent 1.9px),
    radial-gradient(circle at 18% 42%, rgba(255,255,255,.82) 0 1.1px, transparent 1.8px),
    radial-gradient(circle at 26% 66%, rgba(255,255,255,.86) 0 1.2px, transparent 1.9px),
    radial-gradient(circle at 34% 37%, rgba(255,255,255,.72) 0 1px, transparent 1.7px),
    radial-gradient(circle at 44% 68%, rgba(255,255,255,.9) 0 1.2px, transparent 1.9px),
    radial-gradient(circle at 52% 34%, rgba(255,255,255,.74) 0 1px, transparent 1.7px),
    radial-gradient(circle at 63% 69%, rgba(255,255,255,.88) 0 1.15px, transparent 1.85px),
    radial-gradient(circle at 72% 41%, rgba(255,255,255,.8) 0 1.05px, transparent 1.75px),
    radial-gradient(circle at 84% 60%, rgba(255,255,255,.92) 0 1.2px, transparent 1.9px),
    radial-gradient(circle at 90% 46%, rgba(255,255,255,.78) 0 1px, transparent 1.7px),
    radial-gradient(circle at 76% 74%, rgba(255,255,255,.85) 0 1.15px, transparent 1.85px),
    radial-gradient(circle at 30% 76%, rgba(255,255,255,.82) 0 1.1px, transparent 1.8px);
  -webkit-mask: radial-gradient(circle at 50% 50%, transparent 31%, rgba(0,0,0,.95) 45%, rgba(0,0,0,.68) 58%, transparent 72%);
  mask: radial-gradient(circle at 50% 50%, transparent 31%, rgba(0,0,0,.95) 45%, rgba(0,0,0,.68) 58%, transparent 72%);
  filter: blur(.35px);
}

.zg-auth--gate .zg-auth-card::after{
  content:'';
  position:absolute;
  inset:-116px;
  z-index:-1;
  pointer-events:none;
  border-radius: 50%;
  background: radial-gradient(circle at 50% 50%, rgba(255,255,255,.16) 38%, rgba(255,255,255,.08) 48%, rgba(255,255,255,0) 66%);
  -webkit-mask: radial-gradient(circle at 50% 50%, transparent 42%, rgba(0,0,0,.9) 53%, rgba(0,0,0,0) 73%);
  mask: radial-gradient(circle at 50% 50%, transparent 42%, rgba(0,0,0,.9) 53%, rgba(0,0,0,0) 73%);
}

@media (max-width: 999px){
  .zg-auth{
    min-height:100dvh;
    align-items:center;
    justify-content:center;
    padding:28px 16px;
  }

  .zg-auth-shell{
    width:min(560px, 100%);
  }
}

@media (max-width: 640px){
  .zg-row{
    flex-direction:column;
    align-items:flex-start;
  }
}

@media (min-width: 1000px){
  body.zg-auth-page--login,
  .zg-auth--login{
    min-height:100vh;
  }

  .zg-auth--login{
    padding:24px;
  }

  .zg-auth--login .zg-auth-shell{
    width:min(1320px, 100%);
    display:grid;
    grid-template-columns: minmax(420px, 520px) minmax(420px, 1fr);
    gap:28px;
    align-items:stretch;
  }

  .zg-auth--login .zg-auth-card{
    width:100%;
    min-height:min(92vh, 960px);
    padding:56px 52px 44px;
    border-radius: 28px;
    background: rgba(8,8,10,0.58);
    border: 0;
    box-shadow: 0 24px 70px rgba(0,0,0,0.5);
    display:flex;
    flex-direction:column;
    justify-content:center;
  }

  .zg-auth--login .zg-brand-top{
    justify-content:flex-start;
    margin-bottom: 34px;
  }

  .zg-auth--login .zg-brand-top img{
    height: 54px;
  }

  .zg-auth--login .zg-title{
    font-size: clamp(46px, 4vw, 72px);
    margin-bottom: 10px;
  }

  .zg-auth--login .zg-sub{
    margin-bottom: 30px;
    font-size: 15px;
  }

  .zg-auth--login .zg-input{
    font-size: 20px;
    padding: 12px 0 14px;
  }

  .zg-auth--login .zg-btn{
    margin-top: 6px;
    padding: 16px 18px;
  }

  .zg-auth-showcase{
    display:flex;
    position:relative;
    min-height:min(92vh, 960px);
    border-radius: 28px;
    overflow:hidden;
    background: rgba(255,255,255,0.04);
    border: 0;
    box-shadow: 0 24px 70px rgba(0,0,0,0.4);
  }

  .zg-auth-showcase-stack{
    position:relative;
    width:100%;
    height:100%;
  }

  .zg-auth-slide{
    display:block;
    position:absolute;
    inset:0;
    margin:0;
    opacity:0;
    transform: scale(1.02);
    transition: opacity 0.7s ease, transform 4.2s ease;
    pointer-events:none;
  }

  .zg-auth-slide.is-active{
    opacity:1;
    transform: scale(1);
  }

  .zg-auth-slide::after{
    content:'';
    position:absolute;
    inset:0;
    background: linear-gradient(180deg, rgba(6,6,9,0.06), rgba(6,6,9,0.38));
  }

  .zg-auth-slide img{
    width:100%;
    height:100%;
    object-fit:cover;
    display:block;
  }

  .zg-auth-dots{
    display:flex;
    position:absolute;
    top:18px;
    left:50%;
    transform:translateX(-50%);
    z-index:3;
    gap:8px;
  }

  .zg-auth-dot{
    width:8px;
    height:8px;
    border-radius:999px;
    background: rgba(255,255,255,0.38);
    box-shadow: 0 1px 3px rgba(0,0,0,0.18);
  }

  .zg-auth-dot.is-active{
    width:26px;
    background: rgba(255,255,255,0.92);
  }

  .zg-auth--gate{
    padding:48px 24px;
  }

  .zg-auth--gate .zg-auth-shell{
    width:min(520px, 100%);
    display:block;
    margin: 0 auto;
  }

  .zg-auth--gate .zg-auth-card{
    min-height:auto;
    padding:44px 38px 34px;
    border-radius:24px;
    background: rgba(8,8,10,0.72);
    box-shadow: 0 18px 48px rgba(0,0,0,0.42);
  }

  .zg-auth--gate .zg-brand-top{
    justify-content:center;
    margin-bottom: 22px;
  }

  .zg-auth--gate .zg-brand-top img{
    height: 44px;
  }

  .zg-auth--gate .zg-title{
    font-size: 42px;
    text-align: center;
    margin-bottom: 10px;
  }

  .zg-auth--gate .zg-sub{
    text-align: center;
    margin-bottom: 24px;
    font-size: 14px;
  }

  .zg-auth--gate .zg-footer{
    margin-top: 20px;
  }
}

/* Mobile tweak */
@media (max-width: 480px){
  .zg-auth-card{ padding: 34px 22px 24px; }
  .zg-title{ font-size: 34px; }
}

/* ── Login card grain effect (≤999px: single-column / form-only view) ── */
@media (max-width: 999px) {
  .zg-auth--login .zg-auth-card {
    position: relative;
    isolation: isolate;
  }
  /* Left/right white radial glow */
  .zg-auth--login .zg-auth-card::before {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: inherit;
    pointer-events: none;
    z-index: 0;
    background:
      radial-gradient(120% 95% at -10% 50%, rgba(255,255,255,.08) 0%, rgba(255,255,255,.03) 35%, rgba(255,255,255,0) 70%),
      radial-gradient(120% 95% at 110% 50%, rgba(255,255,255,.09) 0%, rgba(255,255,255,.03) 35%, rgba(255,255,255,0) 70%);
  }
  /* Noise grain overlay */
  .zg-auth--login .zg-auth-card::after {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: inherit;
    pointer-events: none;
    z-index: 1;
    background-image: url('/zerogram/portal/client/assets/noise.png');
    background-size: 140% auto;
    background-position: center center;
    opacity: 0;
    mix-blend-mode: soft-light;
    transition: opacity 1.1s cubic-bezier(.2,.7,.2,1);
    -webkit-mask-image: linear-gradient(to right,
      rgba(0,0,0,.92) 0%,
      rgba(0,0,0,.58) 16%,
      rgba(0,0,0,.10) 38%,
      rgba(0,0,0,.08) 62%,
      rgba(0,0,0,.62) 84%,
      rgba(0,0,0,.96) 100%);
    mask-image: linear-gradient(to right,
      rgba(0,0,0,.92) 0%,
      rgba(0,0,0,.58) 16%,
      rgba(0,0,0,.10) 38%,
      rgba(0,0,0,.08) 62%,
      rgba(0,0,0,.62) 84%,
      rgba(0,0,0,.96) 100%);
  }
  /* Keep card content above pseudo-elements */
  .zg-auth--login .zg-auth-card > * {
    position: relative;
    z-index: 2;
  }
}

.zg-auth--login .zg-auth-card.noise-ready::after {
  opacity: .11;
}

@media (prefers-reduced-motion: reduce) {
  .zg-auth--login .zg-auth-card.noise-ready::after {
    transition: none;
  }
}