/* ==========================================================================
   Main Styles - Save the Children iCCM App
   ========================================================================== */

/* ========== CSS Reset & Base ========== */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-normal);
  line-height: var(--line-height-normal);
  color: var(--text-primary);
  background-color: var(--bg-secondary);
  min-height: 100vh;
}

/* ========== Typography ========== */
h1, h2, h3, h4, h5, h6 {
  font-weight: var(--font-weight-semibold);
  line-height: var(--line-height-tight);
  color: var(--text-primary);
}

h1 { font-size: var(--font-size-4xl); }
h2 { font-size: var(--font-size-3xl); }
h3 { font-size: var(--font-size-2xl); }
h4 { font-size: var(--font-size-xl); }
h5 { font-size: var(--font-size-lg); }
h6 { font-size: var(--font-size-base); }

p {
  margin-bottom: var(--spacing-md);
}

a {
  color: var(--text-link);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--color-primary-hover);
}

/* ========== Utility Classes ========== */
.hidden {
  display: none !important;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.text-muted { color: var(--text-muted); }
.text-secondary { color: var(--text-secondary); }

/* ========== Form Elements ========== */
.form-group {
  margin-bottom: var(--spacing-lg);
}

.form-label {
  display: block;
  margin-bottom: var(--spacing-sm);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--text-secondary);
}

.form-input {
  width: 100%;
  padding: var(--spacing-md);
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  color: var(--text-primary);
  background-color: var(--bg-input);
  border: 2px solid var(--color-gray-200);
  border-radius: var(--radius-lg);
  outline: none;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form-input:hover {
  border-color: var(--color-gray-300);
}

.form-input:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(72, 98, 65, 0.15);
}

.form-input::placeholder {
  color: var(--text-muted);
}

.form-input.error {
  border-color: var(--color-danger);
}

.form-input.error:focus {
  box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.15);
}

.form-error {
  margin-top: var(--spacing-xs);
  font-size: var(--font-size-sm);
  color: var(--color-danger);
}

.form-hint {
  margin-top: var(--spacing-xs);
  font-size: var(--font-size-sm);
  color: var(--text-muted);
}

/* ========== Buttons ========== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-md) var(--spacing-xl);
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-semibold);
  line-height: 1;
  text-align: center;
  text-decoration: none;
  border: none;
  border-radius: var(--radius-lg);
  cursor: pointer;
  transition: all var(--transition-fast);
  outline: none;
}

.btn:focus-visible {
  box-shadow: 0 0 0 3px rgba(72, 98, 65, 0.3);
}

.btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.btn-primary {
  color: var(--text-inverse);
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-hover) 100%);
  box-shadow: var(--shadow-md);
}

.btn-primary:hover:not(:disabled) {
  transform: translateY(-1px);
  box-shadow: var(--shadow-lg);
}

.btn-primary:active:not(:disabled) {
  transform: translateY(0);
}

.btn-secondary {
  color: var(--text-inverse);
  background: linear-gradient(135deg, var(--color-secondary) 0%, var(--color-secondary-hover) 100%);
  box-shadow: var(--shadow-md);
}

.btn-secondary:hover:not(:disabled) {
  transform: translateY(-1px);
  box-shadow: var(--shadow-lg);
}

.btn-outline {
  color: var(--color-primary);
  background: transparent;
  border: 2px solid var(--color-primary);
}

.btn-outline:hover:not(:disabled) {
  color: var(--text-inverse);
  background: var(--color-primary);
}

.btn-lg {
  padding: var(--spacing-lg) var(--spacing-2xl);
  font-size: var(--font-size-lg);
}

.btn-block {
  display: flex;
  width: 100%;
}

.btn-icon {
  width: 20px;
  height: 20px;
}

/* ========== Cards ========== */
.card {
  background: var(--bg-card);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-lg);
  overflow: hidden;
}

.card-body {
  padding: var(--spacing-xl);
}

/* ========== Loading Spinner ========== */
.spinner {
  width: 20px;
  height: 20px;
  border: 2px solid transparent;
  border-top-color: currentColor;
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* ========== Alerts ========== */
.alert {
  padding: var(--spacing-md) var(--spacing-lg);
  border-radius: var(--radius-md);
  font-size: var(--font-size-sm);
}

.alert-error {
  color: #991B1B;
  background: var(--color-danger-light);
  border: 1px solid #FECACA;
}

.alert-success {
  color: #065F46;
  background: var(--color-success-light);
  border: 1px solid #A7F3D0;
}

.alert-warning {
  color: #92400E;
  background: var(--color-warning-light);
  border: 1px solid #FDE68A;
}

/* ========== Login Page Styles ========== */
.login-page {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background: linear-gradient(135deg, var(--stc-green) 0%, #3a5235 100%);
}

.login-header {
  padding: var(--spacing-xl);
  text-align: center;
}

.login-header__logo {
  width: 80px;
  height: auto;
  margin-bottom: var(--spacing-md);
  filter: brightness(0) invert(1);
}

.login-header__title {
  color: var(--text-inverse);
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-bold);
  margin-bottom: var(--spacing-xs);
}

.login-header__subtitle {
  color: rgba(255, 255, 255, 0.8);
  font-size: var(--font-size-sm);
}

.login-main {
  flex: 1;
  display: flex;
  align-items: flex-start;
  justify-content: center;
  padding: var(--spacing-lg);
}

.login-card {
  width: 100%;
  max-width: 400px;
  background: var(--bg-card);
  border-radius: var(--radius-2xl);
  box-shadow: var(--shadow-xl);
  overflow: hidden;
}

.login-card__header {
  padding: var(--spacing-xl) var(--spacing-xl) var(--spacing-lg);
  text-align: center;
  background: linear-gradient(135deg, rgba(72, 98, 65, 0.05) 0%, rgba(72, 98, 65, 0.1) 100%);
  border-bottom: 1px solid var(--color-gray-100);
}

.login-card__icon {
  width: 64px;
  height: 64px;
  margin: 0 auto var(--spacing-md);
  padding: var(--spacing-md);
  background: linear-gradient(135deg, var(--stc-green) 0%, var(--stc-green-light) 100%);
  border-radius: var(--radius-xl);
  display: flex;
  align-items: center;
  justify-content: center;
}

.login-card__icon svg {
  width: 32px;
  height: 32px;
  color: white;
}

.login-card__title {
  font-size: var(--font-size-2xl);
  font-weight: var(--font-weight-bold);
  color: var(--text-primary);
  margin-bottom: var(--spacing-xs);
}

.login-card__description {
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
}

.login-card__body {
  padding: var(--spacing-xl);
}

.login-card__footer {
  padding: var(--spacing-lg) var(--spacing-xl);
  text-align: center;
  background: var(--color-gray-50);
  border-top: 1px solid var(--color-gray-100);
}

.login-card__footer-text {
  font-size: var(--font-size-xs);
  color: var(--text-muted);
}

/* Input with icon */
.input-group {
  position: relative;
}

.input-group__icon {
  position: absolute;
  left: var(--spacing-md);
  top: 50%;
  transform: translateY(-50%);
  width: 20px;
  height: 20px;
  color: var(--text-muted);
  pointer-events: none;
  transition: color var(--transition-fast);
}

.input-group .form-input {
  padding-left: calc(var(--spacing-md) + 20px + var(--spacing-sm));
}

.input-group:focus-within .input-group__icon {
  color: var(--color-primary);
}

/* Password toggle */
.input-group--password .form-input {
  padding-right: calc(var(--spacing-md) + 24px + var(--spacing-sm));
}

.password-toggle {
  position: absolute;
  right: var(--spacing-md);
  top: 50%;
  transform: translateY(-50%);
  width: 24px;
  height: 24px;
  background: none;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  padding: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: color var(--transition-fast);
}

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

/* Language selector */
.language-selector {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-lg);
}

.language-selector__label {
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
}

.language-selector__select {
  padding: var(--spacing-sm) var(--spacing-md);
  font-family: var(--font-family);
  font-size: var(--font-size-sm);
  color: var(--text-primary);
  background: var(--bg-input);
  border: 1px solid var(--color-gray-200);
  border-radius: var(--radius-md);
  cursor: pointer;
  outline: none;
}

.language-selector__select:focus {
  border-color: var(--color-primary);
}

/* Remember me checkbox */
.checkbox-group {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-lg);
}

.checkbox-input {
  width: 18px;
  height: 18px;
  accent-color: var(--color-primary);
  cursor: pointer;
}

.checkbox-label {
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
  cursor: pointer;
}

/* Login decorative elements */
.login-decoration {
  position: absolute;
  pointer-events: none;
  opacity: 0.1;
}

.login-decoration--1 {
  top: 10%;
  right: 5%;
  width: 200px;
  height: 200px;
  background: white;
  border-radius: 50%;
  filter: blur(60px);
}

.login-decoration--2 {
  bottom: 20%;
  left: 10%;
  width: 150px;
  height: 150px;
  background: white;
  border-radius: 50%;
  filter: blur(40px);
}

/* Mobile-specific styles */
@media (max-width: 480px) {
  .login-header {
    padding: var(--spacing-lg);
  }

  .login-header__logo {
    width: 60px;
  }

  .login-header__title {
    font-size: var(--font-size-lg);
  }

  .login-main {
    padding: var(--spacing-md);
  }

  .login-card__header,
  .login-card__body {
    padding: var(--spacing-lg);
  }

  .login-card__title {
    font-size: var(--font-size-xl);
  }
}

/* Tablet and larger */
@media (min-width: 768px) {
  .login-page {
    flex-direction: row;
  }

  .login-header {
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding: var(--spacing-3xl);
    position: relative;
    overflow: hidden;
  }

  .login-header__logo {
    width: 120px;
    margin-bottom: var(--spacing-lg);
  }

  .login-header__title {
    font-size: var(--font-size-3xl);
  }

  .login-header__subtitle {
    font-size: var(--font-size-base);
  }

  .login-main {
    flex: 1;
    background: var(--bg-secondary);
    align-items: center;
    padding: var(--spacing-2xl);
  }

  .login-card {
    max-width: 440px;
  }
}

/* Desktop */
@media (min-width: 1024px) {
  .login-header {
    max-width: 500px;
  }

  .login-header__title {
    font-size: var(--font-size-4xl);
  }
}