.room-grid {
  display: grid;
  grid-template-columns: repeat(4, 120px);
  gap: 12px;
}

.room {
  height: 100px;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: bold;
  cursor: pointer;
}

.paid { background: #4ade80; }
.late { background: #f87171; }
.empty { background: #d1d5db; }

.hidden {
  display: none;
}

#modal {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.5);
  display: flex;
  align-items: center;
  justify-content: center;
}

.modal-content {
  background: #fff;
  padding: 20px;
  width: 300px;
  border-radius: 8px;
}

.modal-content label {
  display: block;
  margin-top: 10px;
}

body {
  font-family: "Inter", "Segoe UI", sans-serif;
  margin: 0;
  color: #0f172a;
}

.app-header {
  position: sticky;
  top: 0;
  z-index: 10;
}

.login-body {
  background: #f8fafc;
  min-height: 100vh;
  display: flex;
}

.login-wrapper {
  margin: auto;
  display: grid;
  grid-template-columns: minmax(280px, 420px) minmax(260px, 360px);
  gap: 32px;
  padding: 32px;
}

.login-card {
  background: #ffffff;
  border-radius: 16px;
  padding: 32px;
  box-shadow: 0 20px 40px rgba(15, 23, 42, 0.12);
}

.login-header h1 {
  font-size: 24px;
  margin: 8px 0 12px;
}

.login-eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 12px;
  color: #64748b;
  margin: 0;
}

.login-subtitle {
  color: #475569;
  margin: 0 0 24px;
}

.login-form {
  display: grid;
  gap: 16px;
}

.login-label {
  font-size: 14px;
  font-weight: 600;
}

.login-input {
  border: 1px solid #cbd5f5;
  border-radius: 10px;
  padding: 12px 14px;
  font-size: 14px;
}

.login-input:focus {
  outline: none;
  border-color: #6366f1;
  box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.2);
}

.login-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 13px;
  color: #475569;
}

.login-checkbox {
  display: flex;
  align-items: center;
  gap: 8px;
}

.login-link {
  color: #4f46e5;
  text-decoration: none;
}

.login-link:hover {
  text-decoration: underline;
}

.login-button {
  background: #4f46e5;
  color: #fff;
  border: none;
  padding: 12px 16px;
  border-radius: 10px;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
}

.login-button:hover {
  background: #4338ca;
}

.login-footer {
  margin-top: 24px;
  font-size: 13px;
  color: #475569;
}

.login-aside {
  background: linear-gradient(140deg, #4f46e5, #22d3ee);
  border-radius: 16px;
  color: #fff;
  padding: 32px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.login-aside h2 {
  font-size: 22px;
  margin-top: 0;
}

.login-aside ul {
  padding-left: 18px;
  margin: 16px 0 0;
}

.login-aside li {
  margin-bottom: 10px;
}

@media (max-width: 860px) {
  .login-wrapper {
    grid-template-columns: 1fr;
  }

  .login-aside {
    order: -1;
  }
}

@media (max-width: 640px) {
  .room-grid {
    grid-template-columns: repeat(2, minmax(120px, 1fr));
  }
}