@import url('https://fonts.googleapis.com/css2?family=Ubuntu:wght@400;500;700&display=swap');

:root {
  /* Primary Colors */
  --blue-950: hsl(213, 96%, 18%);
  --purple-600: hsl(243, 100%, 62%);
  --blue-300: hsl(228, 100%, 84%);
  --blue-200: hsl(206, 94%, 87%);
  --red-500: hsl(354, 84%, 57%);

  /* Neutral Colors */
  --grey-500: hsl(231, 11%, 63%);
  --purple-200: hsl(229, 24%, 87%);
  --blue-100: hsl(218, 100%, 97%);
  --blue-50: hsl(231, 100%, 99%);
  --white: hsl(0, 100%, 100%);
  
  --font-ubuntu: 'Ubuntu', sans-serif;
}

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

body {
  font-family: var(--font-ubuntu);
  background-color: var(--blue-50);
  color: var(--blue-950);
  font-size: 16px;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  justify-content: center;
  align-items: center;
}

/* Container Layout */
.container {
  background-color: var(--white);
  width: 100%;
  max-width: 940px;
  border-radius: 1rem;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
  display: flex;
  padding: 1rem;
  position: relative;
}

/* Sidebar Styling */
.sidebar {
  background-image: url('./assets/images/bg-sidebar-desktop.svg');
  background-size: cover;
  background-position: center;
  border-radius: 0.8rem;
  width: 274px;
  min-height: 568px;
  padding: 2.5rem 2rem;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  flex-shrink: 0;
}

.sidebar-step {
  display: flex;
  align-items: center;
  gap: 1rem;
  text-transform: uppercase;
}

.step-number {
  width: 33px;
  height: 33px;
  border: 1px solid var(--white);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--white);
  font-weight: 700;
  transition: all 0.3s ease;
}

.sidebar-step.active .step-number {
  background-color: var(--blue-200);
  color: var(--blue-950);
  border-color: var(--blue-200);
}

.step-text-container {
  display: flex;
  flex-direction: column;
}

.step-label {
  color: var(--blue-300);
  font-size: 0.75rem;
  font-weight: 400;
}

.step-title {
  color: var(--white);
  font-size: 0.9rem;
  letter-spacing: 1px;
}

/* Main Content Area */
.main-content-wrapper {
  flex: 1;
  display: flex;
  flex-direction: column;
  position: relative;
  overflow: hidden;
}

.step {
  padding: 2.5rem 5rem 1.5rem 6rem;
  flex: 1;
  display: flex;
  flex-direction: column;
  width: 100%;
  opacity: 1;
  transition: opacity 0.3s ease, transform 0.3s ease;
}

.step.hidden {
  display: none;
}

.main-content {
  flex: 1;
}

h2 {
  font-size: 2rem;
  margin-bottom: 0.5rem;
  color: var(--blue-950);
}

p {
  color: var(--grey-500);
  margin-bottom: 2.5rem;
  line-height: 1.5;
}

/* Form Groups */
.form-group {
  margin-bottom: 1.5rem;
  display: flex;
  flex-direction: column;
  position: relative;
}

.form-group label {
  color: var(--blue-950);
  font-size: 0.9rem;
  margin-bottom: 0.5rem;
  font-weight: 500;
}

.error-message {
  color: var(--red-500);
  font-size: 0.9rem;
  font-weight: 700;
  position: absolute;
  top: 0;
  right: 0;
  display: none;
}

.form-group.has-error .error-message {
  display: block;
}

.plan-error {
  position: static;
  margin-top: -1rem;
  margin-bottom: 1.5rem;
}

.step-2.has-error .plan-error {
  display: block;
}

.form-group.has-error input {
  border-color: var(--red-500);
}

.form-group input {
  padding: 0.8rem 1rem;
  border: 1px solid var(--purple-200);
  border-radius: 0.5rem;
  font-family: inherit;
  font-size: 1rem;
  color: var(--blue-950);
  font-weight: 500;
  outline: none;
  transition: border-color 0.3s ease;
}

.form-group input:focus {
  border-color: var(--purple-600);
}

.form-group input::placeholder {
  color: var(--grey-500);
  font-weight: 400;
}

/* Plan Options */
.plan-options {
  display: flex;
  gap: 1rem;
  margin-bottom: 2rem;
}

.plan-card {
  flex: 1;
  cursor: pointer;
}

.plan-card input {
  display: none;
}

.plan-content {
  border: 1px solid var(--purple-200);
  border-radius: 0.5rem;
  padding: 1.25rem 1rem;
  transition: all 0.3s ease;
  height: 100%;
}

.plan-content:hover {
  border-color: var(--purple-600);
}

.plan-card input:checked + .plan-content {
  border-color: var(--purple-600);
  background-color: var(--blue-50);
}

.plan-content img {
  margin-bottom: 2.5rem;
}

.plan-info {
  display: flex;
  flex-direction: column;
}

.plan-info strong {
  margin-bottom: 0.25rem;
}

.plan-price {
  color: var(--grey-500);
  font-size: 0.9rem;
}

.yearly-benefit {
  color: var(--blue-950);
  font-size: 0.8rem;
  margin-top: 0.4rem;
}

/* Billing Toggle */
.billing-toggle {
  background-color: var(--blue-50);
  border-radius: 0.5rem;
  padding: 1rem;
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 1.5rem;
}

.billing-option {
  font-weight: 500;
  color: var(--grey-500);
  transition: color 0.3s ease;
}

.billing-option.active {
  color: var(--blue-950);
}

.switch {
  position: relative;
  display: inline-block;
  width: 40px;
  height: 20px;
}

.switch input {
  opacity: 0;
  width: 0;
  height: 0;
}

.slider {
  position: absolute;
  cursor: pointer;
  top: 0; left: 0; right: 0; bottom: 0;
  background-color: var(--blue-950);
  transition: .4s;
  border-radius: 34px;
}

.slider:before {
  position: absolute;
  content: "";
  height: 14px;
  width: 14px;
  left: 3px;
  bottom: 3px;
  background-color: white;
  transition: .4s;
  border-radius: 50%;
}

input:checked + .slider:before {
  transform: translateX(20px);
}

/* Addon Options */
.addon-options {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.addon-card {
  cursor: pointer;
}

.addon-card input {
  display: none;
}

.addon-content {
  border: 1px solid var(--purple-200);
  border-radius: 0.5rem;
  padding: 1rem 1.5rem;
  display: flex;
  align-items: center;
  transition: all 0.3s ease;
}

.addon-content:hover {
  border-color: var(--purple-600);
}

.addon-card input:checked + .addon-content {
  border-color: var(--purple-600);
  background-color: var(--blue-50);
}

.checkbox-custom {
  width: 20px;
  height: 20px;
  border: 1px solid var(--purple-200);
  border-radius: 4px;
  margin-right: 1.5rem;
  display: flex;
  justify-content: center;
  align-items: center;
  transition: all 0.2s ease;
}

.addon-card input:checked + .addon-content .checkbox-custom {
  background-color: var(--purple-600);
  border-color: var(--purple-600);
}

.checkmark {
  display: none;
}

.addon-card input:checked + .addon-content .checkmark {
  display: block;
}

.addon-info {
  flex: 1;
  display: flex;
  flex-direction: column;
}

.addon-info span {
  color: var(--grey-500);
  font-size: 0.9rem;
  margin-top: 0.2rem;
}

.addon-price {
  color: var(--purple-600);
  font-size: 0.9rem;
}

/* Summary */
.summary-container {
  background-color: var(--blue-50);
  border-radius: 0.5rem;
  padding: 1.5rem;
  margin-bottom: 1.5rem;
}

.summary-plan {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1.5rem;
}

.summary-plan div {
  display: flex;
  flex-direction: column;
}

.summary-plan strong {
  color: var(--blue-950);
}

#change-plan {
  color: var(--grey-500);
  text-decoration: underline;
  font-size: 0.9rem;
  margin-top: 0.2rem;
  transition: color 0.3s ease;
}

#change-plan:hover {
  color: var(--purple-600);
}

hr {
  border: none;
  border-top: 1px solid var(--purple-200);
  margin-bottom: 1rem;
}

.summary-item {
  display: flex;
  justify-content: space-between;
  margin-bottom: 1rem;
}

.summary-item:last-child {
  margin-bottom: 0;
}

.summary-item span {
  color: var(--grey-500);
  font-size: 0.95rem;
}

.summary-item strong {
  color: var(--blue-950);
  font-size: 0.95rem;
  font-weight: 400;
}

.summary-total {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0 1.5rem;
}

.summary-total span {
  color: var(--grey-500);
}

.summary-total strong {
  color: var(--purple-600);
  font-size: 1.25rem;
}

/* Buttons Container */
.button-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: auto;
}

.btn-next, .btn-confirm {
  background-color: var(--blue-950);
  color: var(--white);
  border: none;
  padding: 0.8rem 1.5rem;
  border-radius: 0.4rem;
  font-family: inherit;
  font-size: 1rem;
  font-weight: 500;
  cursor: pointer;
  transition: opacity 0.3s ease;
  margin-left: auto;
}

.btn-next:hover, .btn-confirm:hover {
  opacity: 0.8;
}

.btn-confirm {
  background-color: var(--purple-600);
}

.btn-back {
  background-color: transparent;
  color: var(--grey-500);
  border: none;
  font-family: inherit;
  font-size: 1rem;
  font-weight: 500;
  cursor: pointer;
  transition: color 0.3s ease;
}

.btn-back:hover {
  color: var(--blue-950);
}

/* Thank you Content */
.thank-you-content {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  height: 100%;
}

.thank-you-content img {
  width: 80px;
  height: 80px;
  margin-bottom: 2rem;
}

.thank-you-content h2 {
  margin-bottom: 1rem;
}

.attribution {
  font-size: 11px;
  text-align: center;
  margin-top: 2rem;
  color: var(--grey-500);
}

.attribution a {
  color: var(--purple-600);
}

/* Utilities */
.hidden {
  display: none !important;
}

/* Media Queries for Mobile Responsiveness */
@media (max-width: 768px) {
  body {
    background-color: var(--blue-50);
    padding: 0;
    align-items: flex-start;
  }
  
  .container {
    flex-direction: column;
    background-color: transparent;
    box-shadow: none;
    padding: 0;
    margin: 0;
    border-radius: 0;
  }
  
  .sidebar {
    background-image: url('./assets/images/bg-sidebar-mobile.svg');
    background-position: center bottom;
    width: 100%;
    min-height: 172px;
    border-radius: 0;
    flex-direction: row;
    justify-content: center;
    align-items: flex-start;
    padding: 2rem 0;
  }
  
  .step-text-container {
    display: none;
  }
  
  .main-content-wrapper {
    background-color: var(--white);
    margin: -74px 1rem 2rem 1rem;
    padding: 2rem 1.5rem;
    border-radius: 0.6rem;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
    z-index: 10;
  }
  
  .step {
    padding: 0;
    margin-bottom: 5rem;
  }
  
  .plan-options {
    flex-direction: column;
  }
  
  .plan-content {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem;
  }
  
  .plan-content img {
    margin-bottom: 0;
  }
  
  /* Mobile fixed bottom navigation */
  .button-container {
    position: fixed;
    bottom: 0;
    left: 0;
    width: 100%;
    background-color: var(--white);
    padding: 1rem;
    margin: 0;
    z-index: 20;
    box-shadow: 0 -5px 15px rgba(0,0,0,0.03);
  }
}