:root {
  --bg: #0f172a;
  --card: #1e293b;
  --accent: #f97316;
  --accent-dark: #ea580c;
  --text: #e2e8f0;
  --gray: #94a3b8;
  --border: #334155;
  --error: #dc2626;
  --success: #065f46;
}

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

body {
  font-family: system-ui, -apple-system, sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
}

/* Page wrapper */
.auth-page {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 2rem 1rem;
}

/* Volt Tracker – outside card, single line */
.auth-brand-top {
  font-size: clamp(2.4rem, 8vw, 3.6rem);
  font-weight: 800;
  color: var(--accent);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.8rem;
  margin-bottom: 2.2rem;
  letter-spacing: -0.5px;
  text-shadow: 0 2px 10px rgba(0,0,0,0.4);
}

.auth-brand-top i {
  font-size: 1.3em;
  color: #fbbf24;
}

/* Auth card (placeholder) */
.auth-container {
  background: white;
  border-radius: 16px;
  padding: 2.5rem 2rem;
  width: 100%;
  max-width: 420px;
  box-shadow: 0 10px 40px rgba(0,0,0,0.45);
  color: #0f172a;
}

.auth-title {
  text-align: center;
  font-size: 1.9rem;
  color: #0f172a;
  margin-bottom: 2rem;
  font-weight: 700;
}

/* Avatar (login only) */
.avatar {
  width: 80px;
  height: 80px;
  background: #fed7aa;
  border-radius: 50%;
  margin: 0 auto 1.5rem;
  display: grid;
  place-items: center;
  font-size: 2.8rem;
  color: #c2410c;
  border: 4px solid white;
  box-shadow: 0 4px 12px rgba(0,0,0,0.2);
}

/* Form fields */
.form-group {
  margin-bottom: 1.4rem;
}

.form-group label {
  display: block;
  margin-bottom: 0.5rem;
  font-weight: 500;
  color: #334155;
}

.form-group input {
  width: 100%;
  padding: 0.9rem 1rem;
  border: 1px solid #cbd5e1;
  border-radius: 8px;
  font-size: 1rem;
  transition: all 0.2s;
}

.form-group input:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(249,115,22,0.15);
}

.password-wrapper {
  position: relative;
}

.password-wrapper input {
  padding-right: 3.2rem;
}

.toggle-password {
  position: absolute;
  right: 12px;
  top: 50%;
  transform: translateY(-50%);
  background: none;
  border: none;
  font-size: 1.2rem;
  color: var(--gray);
  cursor: pointer;
}

.toggle-password:hover {
  color: var(--accent);
}

.role-group {
  display: flex;
  gap: 1.8rem;
  margin: 1.3rem 0;
  flex-wrap: wrap;
}

.role-group label {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  cursor: pointer;
  font-weight: 500;
}

input[type="radio"] {
  accent-color: var(--accent);
}

.checkbox-group {
  margin: 1.2rem 0;
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.checkbox-group label {
  color: #334155;
  font-weight: 500;
}

.btn-primary {
  width: 100%;
  padding: 1rem;
  background: linear-gradient(135deg, var(--accent), var(--accent-dark));
  color: white;
  border: none;
  border-radius: 10px;
  font-size: 1.1rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.25s;
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(249,115,22,0.35);
}

.switch-text {
  text-align: center;
  margin-top: 1.5rem;
  color: #64748b;
}

.switch-text a {
  color: var(--accent);
  font-weight: 600;
  text-decoration: none;
}

.switch-text a:hover {
  text-decoration: underline;
}

/* Messages */
.error-message,
.success-message {
  padding: 1rem;
  border-radius: 8px;
  margin-bottom: 1.5rem;
  text-align: center;
  font-weight: 500;
}

.error-message {
  background: #fee2e2;
  color: #991b1b;
}

.success-message {
  background: #d1fae5;
  color: var(--success);
}

.success-message a {
  color: var(--success);
  font-weight: 600;
  text-decoration: underline;
}

/* Responsive */
@media (max-width: 480px) {
  .auth-container {
    padding: 2rem 1.4rem;
  }

  .auth-title {
    font-size: 1.7rem;
  }

  .auth-brand-top {
    font-size: 2.6rem;
  }
}