/* ===== VARIABLES ===== */
:root {
  --primary: #1f4bff;
  --primary-dark: #0d2aa8;
  --bg: #f7f9ff;
  --card: #ffffff;
  --text: #0d0d0d;
  --muted: rgba(0, 0, 0, 0.6);
  --radius: 16px;
  --input-border: #c8d2ff;
  --input-focus: rgba(31, 75, 255, 0.2);
  --alert-error: #f0f3ff;
  --alert-error-text: #0d0d0d;
}

/* ===== BASE ===== */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: system-ui, -apple-system, "Segoe UI", sans-serif;
}

body {
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  display: flex;
  justify-content: center;
  align-items: center;
}

/* ===== LOGIN CONTAINER ===== */
.login-container {
  width: 100%;
  max-width: 400px;
  padding: 20px;
}

/* ===== LOGIN CARD ===== */
.login-card {
  background: var(--card);
  padding: 30px 25px;
  border-radius: var(--radius);
  box-shadow: 0 15px 40px rgba(0, 0, 0, 0.08);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.login-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 22px 50px rgba(0, 0, 0, 0.1);
}

/* ===== LOGIN HEADER ===== */
.login-header h1 {
  font-size: 24px;
  text-align: center;
  color: var(--text);
  margin-bottom: 10px;
}

.login-header p {
  text-align: center;
  color: var(--muted);
  font-size: 16px;
}

/* ===== ALERT ERROR ===== */
.alert {
  padding: 12px 15px;
  border-radius: var(--radius);
  margin-bottom: 20px;
  font-size: 14px;
}

.alert-error {
  background: var(--alert-error);
  color: var(--alert-error-text);
  border: 1px solid rgba(31, 75, 255, 0.18);
}

/* ===== FORM ===== */
.form-group {
  margin-bottom: 18px;
}

label {
  display: block;
  margin-bottom: 6px;
  font-weight: 500;
  color: var(--text);
}

input.form-control {
  width: 100%;
  padding: 12px 14px;
  border-radius: var(--radius);
  border: 1px solid var(--input-border);
  font-size: 14px;
  transition: 0.3s ease, box-shadow 0.3s ease;
}

input.form-control:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 10px var(--input-focus);
}

/* ===== BUTTON ===== */
.btn {
  display: inline-flex;
  justify-content: center;
  align-items: center;
  font-weight: 600;
  cursor: pointer;
  border-radius: 999px;
  padding: 12px 0;
  font-size: 16px;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  text-decoration: none;
  border: none;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: #fff;
  box-shadow: 0 12px 28px rgba(0, 0, 0, 0.16);
}

.btn-primary:hover {
  transform: scale(1.04);
  box-shadow: 0 15px 36px rgba(0, 0, 0, 0.2);
}

/* ===== BACK TO HOME LINK ===== */
.login-card a {
  color: var(--primary-dark);
  text-decoration: none;
  transition: color 0.3s ease;
}

.login-card a:hover {
  text-decoration: underline;
  color: var(--primary);
}

/* ===== DEMO CREDENTIALS BOX ===== */
.login-card div[style*="background: #e3f2fd"] {
  background: rgba(31, 75, 255, 0.08);
  padding: 12px 15px;
  border-radius: var(--radius);
  margin-top: 20px;
  font-size: 14px;
  color: var(--text);
}