/* ===== MONOCHROME AUTH DESIGN SYSTEM ===== */

:root {
  /* Monochrome Color Palette */
  --primary-color: #000000;
  --primary-light: #333333;
  --secondary-color: #6b7280;
  --white: #ffffff;
  --gray-50: #f9fafb;
  --gray-100: #f3f4f6;
  --gray-200: #e5e7eb;
  --gray-300: #d1d5db;
  --gray-400: #9ca3af;
  --gray-500: #6b7280;
  --gray-600: #4b5563;
  --gray-700: #374151;
  --gray-800: #1f2937;
  --gray-900: #111827;

  /* Typography */
  --font-family: "Space Grotesk", sans-serif;

  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
}

body {
  background: var(--white);
  color: var(--gray-900);
  font-family: var(--font-family);
  min-height: 100vh;
  position: relative;
  margin: 0;
  padding: 0;
}

/* Responsive adjustments */
@media (max-width: 768px) {
  body {
    padding: 1rem;
  }
}

/* ===== LOGO STYLING ===== */
.logo {
  max-width: 150px;
  border-radius: 0;
  margin-bottom: 2rem;
  margin-top: 0;
  transform: translateX(-50%);
  margin-left: 50%;
  padding: 0;
  filter: grayscale(100%);
  transition: all 0.3s ease;
}

.logo:hover {
  filter: grayscale(0%);
}

/* ===== CUSTOM CONTROLS ===== */
.custom-control-label {
  margin-bottom: 0;
  margin-top: 1px;
  font-family: var(--font-family);
  font-weight: 500;
  color: var(--gray-700);
  -webkit-touch-callout: none;
  -webkit-user-select: none;
  -khtml-user-select: none;
  -moz-user-select: none;
  -ms-user-select: none;
  user-select: none;
}

/* ===== CARD STYLING ===== */
.card-signin {
  border: 1px solid var(--gray-200);
  border-radius: 0;
  background: var(--white);
  box-shadow: var(--shadow-xl);
  transition: all 0.3s ease;
  backdrop-filter: blur(10px);
}

.card-signin:hover {
  box-shadow: var(--shadow-xl);
  transform: translateY(-2px);
}

.card-signin .card-header {
  font-weight: 600;
  font-size: 1.5rem;
  font-family: var(--font-family);
  border-radius: 0;
  background: var(--white);
  color: var(--gray-900);
  border-bottom: 1px solid var(--gray-200);
}

/* ===== FORM HEADER ===== */
.login-form-head {
  text-align: center;
  background: var(--white);
  padding: 30px 15px;
  border-bottom: 1px solid var(--gray-200);
}

.login-form-head h4 {
  letter-spacing: 0;
  font-weight: 700;
  font-family: var(--font-family);
  color: var(--gray-900);
  margin: 0;
}

/* ===== CARD BODY ===== */
.card-signin .card-body {
  padding: 2rem 2.5rem;
}

/* ===== FORM SIGNIN ===== */
.form-signin {
  font-family: var(--font-family);
  width: 100%;
  text-align: center;
}

.form-signin h5 {
  font-family: var(--font-family);
  font-weight: 700;
  color: var(--gray-900);
  margin-bottom: 2rem;
  font-size: 1.5rem;
}

.form-signin .btn {
  font-size: 16px;
  font-weight: 600;
  font-family: var(--font-family);
  letter-spacing: 0;
  padding: 14px 24px;
  transition: all 0.3s ease;
  border-radius: 0;
  text-transform: none;
}

.form-signin .form-control {
  padding: 14px 20px;
  text-align: left;
  border: 2px solid var(--gray-300);
  border-radius: 0;
  height: auto;
  font-family: var(--font-family);
  font-size: 16px;
  background: var(--white);
  color: var(--gray-900);
  transition: all 0.3s ease;
}

.form-signin .form-control:focus {
  border-color: var(--primary-color);
  box-shadow: none;
  outline: none;
}

.form-signin .form-control::placeholder {
  color: var(--gray-500);
  font-family: var(--font-family);
}

/* ===== FORM SIGNUP ===== */
.form-signup {
  font-family: var(--font-family);
  width: 100%;
}

.form-signup h5 {
  font-family: var(--font-family);
  font-weight: 700;
  color: var(--gray-900);
  margin-bottom: 2rem;
  font-size: 1.5rem;
}

.form-signup .btn {
  font-size: 16px;
  font-weight: 600;
  font-family: var(--font-family);
  letter-spacing: 0;
  padding: 14px 24px;
  transition: all 0.3s ease;
  border-radius: 0;
  text-transform: none;
}

.form-signup .form-control {
  padding: 14px 20px;
  height: auto;
  border: 2px solid var(--gray-300);
  border-radius: 0;
  font-family: var(--font-family);
  font-size: 16px;
  background: var(--white);
  color: var(--gray-900);
  transition: all 0.3s ease;
}

.form-signup .form-control:focus {
  border-color: var(--primary-color);
  box-shadow: none;
  outline: none;
}

.form-signup .form-control::placeholder {
  color: var(--gray-500);
  font-family: var(--font-family);
}

select.form-control {
  padding: 14px 20px;
  height: 54px !important;
  border: 2px solid var(--gray-300);
  border-radius: 0;
  font-family: var(--font-family);
}

/* ===== CUSTOM CONTROLS ===== */
.custom-control-label:before {
  background: var(--gray-300);
  border-radius: 0 !important;
  border: 2px solid var(--gray-400);
}

.custom-control-input:checked ~ .custom-control-label::before {
  background-color: var(--primary-color);
  border-color: var(--primary-color);
}

.custom-control {
  display: inline-block;
}

/* ===== BUTTONS ===== */
.btn-primary {
  background-color: var(--primary-color) !important;
  border-color: var(--primary-color) !important;
  color: var(--white) !important;
  font-weight: 600;
  border-radius: 0;
  transition: all 0.3s ease;
}

.btn-primary:hover,
.btn-primary:focus,
.btn-primary:active {
  background-color: var(--primary-light) !important;
  border-color: var(--primary-light) !important;
  color: var(--white) !important;
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

.btn-register {
  text-align: center;
  display: block;
  color: var(--primary-color) !important;
  font-size: 16px !important;
  font-family: var(--font-family);
  font-weight: 500;
  text-decoration: none;
  transition: all 0.3s ease;
}

.btn-register:hover {
  color: var(--primary-light) !important;
  text-decoration: none;
}

/* ===== ALERTS ===== */
.alert {
  border-radius: 0;
  font-family: var(--font-family);
  font-weight: 500;
}

.alert-success {
  color: var(--gray-800);
  background-color: var(--gray-100);
  border-color: var(--gray-300);
}

.alert-danger {
  color: var(--gray-800);
  background-color: var(--gray-100);
  border-color: var(--gray-300);
}

/* ===== SELECT DROPDOWN ===== */
select.form-control {
  margin: 0;
  -webkit-box-sizing: border-box;
  -moz-box-sizing: border-box;
  box-sizing: border-box;
  -webkit-appearance: none;
  -moz-appearance: none;
  appearance: none;
  background-image: url("data:image/svg+xml;charset=UTF-8,%3Csvg%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%20width%3D%2212%22%20height%3D%2212%22%20viewBox%3D%220%200%2012%2012%22%3E%3Ctitle%3Edown-arrow%3C%2Ftitle%3E%3Cg%20fill%3D%22%23000000%22%3E%3Cpath%20d%3D%22M10.293%2C3.293%2C6%2C7.586%2C1.707%2C3.293A1%2C1%2C0%2C0%2C0%2C.293%2C4.707l5%2C5a1%2C1%2C0%2C0%2C0%2C1.414%2C0l5-5a1%2C1%2C0%2C1%2C0-1.414-1.414Z%22%20fill%3D%22%23000000%22%3E%3C%2Fpath%3E%3C%2Fg%3E%3C%2Fsvg%3E");
  background-repeat: no-repeat;
  background-position: right 1rem top 50%;
  background-size: 0.65rem auto;
}

select.form-control:focus {
  border-color: var(--primary-color);
  box-shadow: none;
}

/* ===== LINKS ===== */
a {
  color: var(--primary-color);
  font-family: var(--font-family);
  font-weight: 500;
  text-decoration: none;
  transition: all 0.3s ease;
}

a:hover {
  color: var(--primary-light);
  text-decoration: none;
}

/* ===== RESPONSIVE DESIGN ===== */
@media (max-width: 576px) {
  .card-signin .card-body {
    padding: 1.5rem 1rem;
  }

  .form-signin .form-control,
  .form-signup .form-control {
    font-size: 16px; /* Prevents zoom on iOS */
  }

  .logo {
    max-width: 120px;
  }
}

/* ===== VALIDATION FEEDBACK ===== */
.invalid-feedback {
  font-family: var(--font-family);
  font-weight: 500;
  color: var(--gray-700);
}

.form-control.is-invalid {
  border-color: var(--gray-600);
}

/* ===== ACCESSIBILITY ===== */
.form-control:focus,
.btn:focus {
  outline: 2px solid var(--primary-color);
  outline-offset: 2px;
  box-shadow: none;
}

/* ===== CLEAN WHITE BACKGROUND - NO DARK MODE ===== */
/* Maintaining consistent white background across all themes */
@media (prefers-color-scheme: dark) {
  body {
    background: var(--white);
    color: var(--gray-900);
  }

  .card-signin {
    background: var(--white);
    border-color: var(--gray-200);
  }

  .form-control {
    background: var(--white);
    border-color: var(--gray-300);
    color: var(--gray-900);
  }

  .form-control::placeholder {
    color: var(--gray-500);
  }
}