:root {
  /* NexSeven — dark + cyan */
  --cyan:         #06b6d4;
  --cyan-dark:    #0891b2;
  --cyan-bright:  #22d3ee;
  --cyan-glow:    rgba(6, 182, 212, 0.4);
  --cyan-glass:   rgba(6, 182, 212, 0.12);
  --cyan-glass2:  rgba(6, 182, 212, 0.06);
  --bg-deep:      #020617;
  --bg-dark:      #0a1628;
  --bg-card:      rgba(10, 22, 40, 0.85);
  --border:       rgba(6, 182, 212, 0.18);
  --border-focus: rgba(6, 182, 212, 0.55);
  --text:         #e2e8f0;
  --text-soft:    #94a3b8;
  --muted:        #475569;
  --white:        #ffffff;
  --danger:       #f87171;
  --danger-bg:    rgba(248, 113, 113, 0.12);
  --radius:       14px;
  --shadow:       0 8px 32px rgba(6, 182, 212, 0.15);
  --shadow-sm:    0 2px 8px rgba(6, 182, 212, 0.25);
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

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

body {
  min-height: 100dvh;
  background:
    radial-gradient(ellipse 900px 500px at 50% -8%, rgba(6,182,212,0.18), transparent 65%),
    radial-gradient(ellipse 600px 400px at 80% 100%, rgba(6,182,212,0.08), transparent 60%),
    var(--bg-deep);
  color: var(--text);
  -webkit-font-smoothing: antialiased;
}

/* ===== Brand ===== */
.brand { display: flex; align-items: baseline; gap: 8px; }
.brand-mark {
  font-weight: 900;
  letter-spacing: 1px;
  font-size: 28px;
  background: linear-gradient(135deg, var(--cyan-bright), var(--cyan), var(--cyan-dark));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  text-shadow: none;
  filter: drop-shadow(0 0 12px var(--cyan-glow));
}
.brand-sub {
  font-weight: 500;
  font-size: 13px;
  color: var(--text-soft);
  letter-spacing: .3px;
}
.brand--gate { justify-content: center; margin-bottom: 18px; }

/* ===== Gate (senha) ===== */
.gate {
  min-height: 100dvh;
  display: grid;
  place-items: center;
  padding: 24px;
}
.gate-card {
  width: 100%;
  max-width: 360px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow), inset 0 1px 0 rgba(255,255,255,.04);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  padding: 28px 24px;
  text-align: center;
}
.gate-title { margin: 4px 0 6px; font-size: 20px; font-weight: 700; color: var(--white); }
.gate-text { margin: 0 0 20px; color: var(--text-soft); font-size: 14px; }
.gate-card .field { text-align: left; }

/* ===== App / Header ===== */
.app { max-width: 540px; margin: 0 auto; padding: 28px 18px 56px; }
.header { text-align: center; margin-bottom: 20px; }
.header .brand { justify-content: center; }
.header-tagline { margin: 6px 0 0; color: var(--text-soft); font-size: 14px; font-weight: 500; letter-spacing: .2px; }

/* ===== Card / Form ===== */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow), inset 0 1px 0 rgba(255,255,255,.04);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  padding: 22px 20px;
  display: grid;
  gap: 16px;
}

.field { display: grid; gap: 6px; }
.field-label { font-size: 13px; font-weight: 600; color: var(--text); letter-spacing: .2px; }
.field-label .req { color: var(--cyan-bright); font-style: normal; }
.field-help { font-size: 12px; color: var(--muted); line-height: 1.4; }
.field-help b { color: var(--text-soft); }
.field-error { font-size: 12px; color: var(--danger); font-weight: 600; }

.input {
  width: 100%;
  font-size: 16px;
  color: var(--text);
  background: rgba(2, 6, 23, 0.6);
  border: 1.5px solid var(--border);
  border-radius: 10px;
  padding: 12px 14px;
  outline: none;
  transition: border-color .2s, box-shadow .2s;
}
.input::placeholder { color: var(--muted); }
.input:focus {
  border-color: var(--border-focus);
  box-shadow: 0 0 0 3px rgba(6, 182, 212, 0.15);
}
.input--invalid {
  border-color: var(--danger);
  box-shadow: 0 0 0 3px rgba(248, 113, 113, 0.15);
}
.input--date { appearance: none; color-scheme: dark; }

/* Garante que o ícone do calendário fique visível no tema escuro */
.input--date::-webkit-calendar-picker-indicator {
  filter: invert(70%) sepia(60%) saturate(400%) hue-rotate(160deg);
  cursor: pointer;
  opacity: .8;
}

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  font-size: 15px;
  font-weight: 700;
  border: none;
  border-radius: 10px;
  padding: 13px 18px;
  cursor: pointer;
  transition: transform .05s, filter .15s, opacity .15s, box-shadow .15s;
}
.btn:active { transform: translateY(1px); }
.btn--primary {
  color: var(--bg-deep);
  background: linear-gradient(135deg, var(--cyan-bright), var(--cyan), var(--cyan-dark));
  box-shadow: var(--shadow-sm), 0 0 20px rgba(6, 182, 212, 0.3);
}
.btn--primary:hover {
  filter: brightness(1.08);
  box-shadow: var(--shadow-sm), 0 0 30px rgba(6, 182, 212, 0.45);
}
.btn--block { width: 100%; margin-top: 4px; }
.btn[disabled] { opacity: .55; cursor: progress; }

.link-btn {
  background: none; border: none; color: var(--muted);
  font-size: 13px; cursor: pointer; padding: 8px; text-decoration: underline;
  transition: color .15s;
}
.link-btn:hover { color: var(--text-soft); }

/* ===== Spinner ===== */
.spinner {
  width: 16px; height: 16px;
  border: 2.5px solid rgba(2, 6, 23, 0.4);
  border-top-color: var(--bg-deep);
  border-radius: 50%;
  animation: spin .7s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ===== Messages ===== */
.msg {
  margin: 6px 0 0;
  font-size: 14px;
  font-weight: 600;
  padding: 12px 14px;
  border-radius: 10px;
}
.msg--error { color: var(--danger); background: var(--danger-bg); border: 1px solid rgba(248,113,113,0.25); }
.msg--success { color: var(--cyan-bright); background: var(--cyan-glass); border: 1px solid var(--border); }

/* ===== Footer ===== */
.footer { text-align: center; margin-top: 18px; }

/* ===== Responsivo ===== */
@media (max-width: 380px) {
  .brand-mark { font-size: 24px; }
  .card { padding: 18px 16px; }
}