:root{
  --bg-dark: #0b0d12;
  --bg-dark-2: #10131c;
  --panel: #f7f8fb;
  --card: #ffffff;
  --text: #0b0d12;
  --muted: #5b6475;
  --muted-2: #7b8599;
  --stroke: rgba(17, 24, 39, 0.12);
  --stroke-2: rgba(255,255,255,0.14);
  --shadow: 0 18px 60px rgba(0,0,0,0.18);
  --shadow-2: 0 22px 70px rgba(0,0,0,0.35);
  --red: #e11414;
  --red-2: #b30000;
  --ok: #16a34a;
  --warn: #b45309;
  --bad: #dc2626;
  --radius-xl: 24px;
  --radius-lg: 18px;
  --radius-md: 14px;
  --radius-sm: 12px;
  --font: Inter, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, sans-serif;
}

*{ box-sizing:border-box; }
html,body{ height:100%; }
body{
  margin:0;
  font-family: var(--font);
  color: var(--text);
  background: var(--panel);
}

.auth{
  min-height: 100vh;
  display: grid;
  grid-template-columns: 1fr;
}

/* Brand (esquerda / topo no mobile) */
.auth__brand{
  position: relative;
  padding: 22px 18px;
  color: #fff;
  background:
    radial-gradient(900px 520px at 10% 15%, rgba(225, 20, 20, 0.22), transparent 60%),
    radial-gradient(900px 520px at 85% 25%, rgba(255, 255, 255, 0.10), transparent 60%),
    linear-gradient(135deg, var(--bg-dark) 0%, var(--bg-dark-2) 55%, #07080d 100%);
  overflow: hidden;
  border-bottom: 1px solid rgba(255,255,255,0.10);
}

/* textura sutil (asfalto/linhas) */
.auth__brand::before{
  content:"";
  position:absolute;
  inset:-2px;
  background:
    repeating-linear-gradient(
      135deg,
      rgba(255,255,255,0.06) 0px,
      rgba(255,255,255,0.06) 1px,
      transparent 1px,
      transparent 10px
    );
  opacity: .22;
  transform: translate3d(0,0,0);
  pointer-events:none;
  mask-image: radial-gradient(60% 60% at 30% 40%, #000 0%, transparent 75%);
}

.auth__brand::after{
  content:"";
  position:absolute;
  width: 560px;
  height: 560px;
  border-radius: 999px;
  right: -220px;
  bottom: -260px;
  background: radial-gradient(circle at 30% 30%, rgba(225,20,20,0.26), transparent 60%);
  filter: blur(1px);
  opacity: .9;
  pointer-events:none;
}

.brand{
  position: relative;
  display:flex;
  gap: 14px;
  align-items: center;
}

.brand__mark{
  width: 48px;
  height: 48px;
  border-radius: 16px;
  background: rgba(255,255,255,0.06);
  border: 1px solid var(--stroke-2);
  display:grid;
  place-items:center;
  box-shadow: 0 14px 40px rgba(0,0,0,0.30);
}

.brand__name{
  font-weight: 900;
  letter-spacing: 0.6px;
  font-size: 1.08rem;
  line-height: 1.1;
}
.brand__subtitle{
  margin-top: 2px;
  font-weight: 600;
  color: rgba(255,255,255,0.78);
  font-size: .9rem;
}

.brand__caption{
  position: relative;
  margin-top: 16px;
  max-width: 52ch;
}
.caption__title{
  font-weight: 900;
  font-size: 1.05rem;
  letter-spacing: 0.2px;
}
.caption__desc{
  margin: 8px 0 0;
  color: rgba(255,255,255,0.78);
  line-height: 1.55;
  font-size: .94rem;
}

/* Panel (direita / form) */
.auth__panel{
  display:grid;
  place-items: center;
  padding: 18px;
  background: linear-gradient(180deg, #f7f8fb 0%, #f2f4f9 100%);
}

.panel{
  width: min(520px, 100%);
}

.panel__card{
  background: var(--card);
  border: 1px solid var(--stroke);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow);
  padding: 26px 18px;
}

.panel__header{
  margin-bottom: 16px;
}
.panel__title{
  margin:0;
  font-weight: 900;
  letter-spacing: -0.2px;
  font-size: 1.55rem;
}
.panel__hint{
  margin: 8px 0 0;
  color: var(--muted);
  font-size: .95rem;
  line-height: 1.4;
}

.form{
  display:grid;
  gap: 12px;
}

.form__field{
  display:grid;
  gap: 8px;
}
.form__label{
  font-weight: 800;
  font-size: .92rem;
  color: #1f2937;
}
.form__input{
  width: 100%;
  border: 1px solid rgba(17,24,39,0.14);
  border-radius: 14px;
  padding: 14px 14px;
  font-size: 1rem;
  outline: none;
  background: #fff;
  transition: box-shadow .15s ease, border-color .15s ease, transform .15s ease;
}
.form__input::placeholder{ color: rgba(91,100,117,0.75); }
.form__input:focus{
  border-color: rgba(225,20,20,0.35);
  box-shadow: 0 0 0 4px rgba(225,20,20,0.10);
}

.input-group{
  position: relative;
}
.form__input--with-btn{
  padding-right: 108px;
}
.input-group__btn{
  position:absolute;
  right: 8px;
  top: 50%;
  transform: translateY(-50%);
  border-radius: 12px;
  border: 1px solid rgba(17,24,39,0.12);
  background: rgba(17,24,39,0.04);
  color: #111827;
  padding: 10px 12px;
  font-weight: 900;
  cursor:pointer;
}
.input-group__btn:hover{
  background: rgba(17,24,39,0.06);
}
.input-group__btn:active{
  transform: translateY(-50%) scale(0.98);
}

.form__row{
  display:flex;
  justify-content:flex-end;
  margin-top: -6px;
}

.link{
  background: transparent;
  border: 0;
  padding: 0;
  color: #0f172a;
  font-weight: 800;
  cursor: pointer;
  text-decoration: underline;
  text-decoration-color: rgba(225,20,20,0.35);
  text-underline-offset: 4px;
}
.link:hover{
  text-decoration-color: rgba(225,20,20,0.75);
}

.form__message{
  min-height: 18px;
  font-size: .95rem;
  font-weight: 700;
  line-height: 1.35;
  color: transparent;
}
.form__message.is-error{ color: var(--bad); }
.form__message.is-ok{ color: var(--ok); }
.form__message.is-warn{ color: var(--warn); }

.btn{
  border: 0;
  border-radius: 16px;
  padding: 14px 16px;
  font-size: 1.02rem;
  font-weight: 900;
  cursor: pointer;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap: 10px;
  min-height: 52px;
  transition: transform .16s ease, filter .16s ease, box-shadow .16s ease, opacity .16s ease;
}
.btn--primary{
  color: #fff;
  background: linear-gradient(135deg, var(--red) 0%, var(--red-2) 100%);
  box-shadow: 0 18px 40px rgba(225,20,20,0.18);
}
.btn--primary:hover{
  transform: translateY(-1px);
  filter: brightness(1.03);
  box-shadow: 0 22px 50px rgba(225,20,20,0.22);
}
.btn--primary:active{
  transform: translateY(0px) scale(0.99);
}
.btn[disabled]{
  opacity: .72;
  cursor: not-allowed;
  transform: none;
}

.btn__spinner{
  width: 18px;
  height: 18px;
  border-radius: 999px;
  border: 2px solid rgba(255,255,255,0.45);
  border-top-color: rgba(255,255,255,0.95);
  display:none;
  animation: spin .75s linear infinite;
}
.btn.is-loading .btn__spinner{ display:inline-block; }
.btn.is-loading .btn__text{ opacity: .92; }

@keyframes spin{
  to { transform: rotate(360deg); }
}

.panel__footer{
  margin-top: 6px;
  color: var(--muted-2);
  font-weight: 700;
  text-align: center;
}

/* Toast */
.toast{
  position: fixed;
  left: 50%;
  bottom: 18px;
  transform: translateX(-50%) translateY(16px);
  width: min(520px, calc(100% - 28px));
  background: rgba(15, 23, 42, 0.94);
  color: #fff;
  border: 1px solid rgba(255,255,255,0.10);
  box-shadow: var(--shadow-2);
  border-radius: 18px;
  padding: 14px 14px;
  display:flex;
  gap: 12px;
  align-items: center;
  justify-content: space-between;
  opacity: 0;
  pointer-events: none;
  transition: opacity .18s ease, transform .18s ease;
  z-index: 9999;
}
.toast.is-visible{
  opacity: 1;
  pointer-events: auto;
  transform: translateX(-50%) translateY(0px);
}
.toast__title{
  font-weight: 900;
  margin-bottom: 2px;
}
.toast__desc{
  color: rgba(255,255,255,0.80);
  font-weight: 600;
  line-height: 1.35;
  font-size: .95rem;
}
.toast__close{
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: 12px;
  color: #fff;
  font-weight: 900;
  padding: 10px 12px;
  cursor:pointer;
}
.toast__close:hover{
  background: rgba(255,255,255,0.10);
}

/* Desktop split */
@media (min-width: 769px){
  .auth{
    grid-template-columns: 1.05fr 0.95fr;
  }
  .auth__brand{
    padding: 40px 44px;
    border-bottom: 0;
    border-right: 1px solid rgba(255,255,255,0.08);
    display:flex;
    flex-direction: column;
    justify-content: center;
  }
  .brand__mark{
    width: 56px;
    height: 56px;
    border-radius: 18px;
  }
  .brand__name{
    font-size: 1.35rem;
  }
  .brand__subtitle{
    font-size: 1rem;
  }
  .brand__caption{ margin-top: 22px; }
  .caption__title{ font-size: 1.2rem; }
  .panel__card{
    padding: 30px 28px;
  }
}

/* Mobile: header compacto + form full */
@media (max-width: 768px){
  .caption__desc{ display: block; }
  .auth__panel{ padding: 18px 14px 28px; }
  .panel__card{ padding: 22px 16px; }
  .form__input{ padding: 15px 14px; }
  .btn{ min-height: 54px; }
}

@media (prefers-reduced-motion: reduce){
  *{ transition: none !important; animation: none !important; }
}