:root {
  --primary: #0F3D2E;
  --bg: #FAF3DD;
  --card-bg: #F4E6C3;
  --text-dark: #2c2c2c;
  --muted: rgba(0,0,0,0.5);
}

/* =========================
   RESET
========================= */
* {
  box-sizing: border-box;
  font-family: "Segoe UI", sans-serif;
}

body {
  margin: 0;
  min-height: 100vh;
  background: var(--bg);

  display: flex;
  align-items: center;
  justify-content: center;

  padding: 20px;
}

/* =========================
   LOGIN CARD
========================= */
.login-card {
  width: 100%;
  max-width: 380px;

  background: var(--card-bg);
  padding: 28px;
  border-radius: 12px;

  box-shadow: 0 10px 30px rgba(0,0,0,0.08);

  transition: all 0.3s ease;
}

/* =========================
   TEXT
========================= */
.login-card h2 {
  margin: 0 0 6px;
  text-align: center;
  color: var(--primary);
  font-size: 24px;
}

.login-card p {
  margin: 0 0 20px;
  text-align: center;
  font-size: 14px;
  color: var(--muted);
}

/* =========================
   FORM
========================= */
.form-group {
  margin-bottom: 16px;
}

.form-group label {
  display: block;
  margin-bottom: 6px;
  font-size: 13px;
  color: var(--text-dark);
}

.form-group input {
  width: 100%;
  padding: 11px 12px;
  border-radius: 8px;
  border: 1px solid rgba(0,0,0,0.2);
  background: #fff;
  font-size: 14px;
  outline: none;
  transition: 0.2s;
}

.form-group input:focus {
  border-color: var(--primary);
}

/* =========================
   PASSWORD ICON
========================= */
.password-wrapper {
  position: relative;
}

.password-wrapper input {
  padding-right: 40px;
}

.toggle-password {
  position: absolute;
  right: 10px;
  top: 50%;
  transform: translateY(-50%);
  cursor: pointer;
  font-size: 16px;
  color: var(--muted);
}

/* =========================
   BUTTON
========================= */
.login-btn {
  width: 100%;
  padding: 12px;
  border: none;
  border-radius: 8px;

  background: var(--primary);
  color: #fff;
  font-size: 15px;

  cursor: pointer;
  transition: 0.2s;
}

.login-btn:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 16px rgba(0,0,0,0.15);
}

/* =========================
   ERROR
========================= */
.error-msg {
  display: none;
  margin-top: 12px;
  text-align: center;
  font-size: 13px;
  color: #b00020;
}

/* =========================
   📱 MOBILE
========================= */
@media (max-width: 480px) {

  body {
    padding: 12px;
  }

  .login-card {
    padding: 20px;
    border-radius: 10px;
  }

  .login-card h2 {
    font-size: 20px;
  }
}

/* =========================
   📲 TABLET
========================= */
@media (min-width: 481px) and (max-width: 768px) {
  .login-card {
    max-width: 400px;
  }
}

/* =========================
   💻 LAPTOP
========================= */
@media (min-width: 769px) and (max-width: 1200px) {
  .login-card {
    max-width: 420px;
  }
}

/* =========================
   🖥️ DESKTOP
========================= */
@media (min-width: 1200px) {
  .login-card {
    max-width: 440px;
  }
}

/* =========================
   📺 BIG SCREEN / TV
========================= */
@media (min-width: 1600px) {
  .login-card {
    max-width: 500px;
    padding: 36px;
  }
}

/* =========================
   📺 4K / ULTRA WIDE
========================= */
@media (min-width: 2000px) {
  .login-card {
    max-width: 520px;
    padding: 42px;
  }
}