/* 
   IceBerk - Apple-inspired iOS Dark Theme
   Clean, lightweight design with subtle animations
*/

/* Import modern Apple fonts */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap');
@import url('https://fonts.googleapis.com/css2?family=SF+Pro+Display:wght@300;400;500;600;700&display=swap');
@import url('https://fonts.googleapis.com/css2?family=SF+Pro+Text:wght@300;400;500;600&display=swap');

/* Base Styles */
:root {
  --primary-color: #0A84FF;
  --primary-dark: #0071E3;
  --primary-light: #5AC8FA;
  --text-color: #F2F2F7;
  --light-text: #98989D;
  --background: #000000;
  --card-bg: #1C1C1E;
  --border-radius: 16px;
  --small-radius: 12px;
  --shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
  --transition: all 0.2s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  --success: #32D74B;
  --error: #FF453A;
  --warning: #FFD60A;
  --border-color: #2C2C2E;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: 'SF Pro Text', -apple-system, BlinkMacSystemFont, 'Inter', Helvetica, Arial, sans-serif;
  background-color: var(--background);
  color: var(--text-color);
  line-height: 1.4;
  padding-bottom: 68px;
  min-height: 100vh;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-family: 'SF Pro Display', -apple-system, BlinkMacSystemFont, 'Inter', sans-serif;
  font-weight: 600;
  margin-bottom: 0.3rem;
  letter-spacing: -0.02em;
}

h1 {
  font-size: 1.9rem;
  letter-spacing: -0.03em;
}

h2 {
  font-size: 1.4rem;
  letter-spacing: -0.02em;
}

h3 {
  font-size: 1.1rem;
}

p {
  margin-bottom: 0.7rem;
  font-size: 0.9rem;
}

/* Card Styles */
.card {
  background-color: var(--card-bg);
  border-radius: var(--border-radius);
  box-shadow: var(--shadow);
  padding: 1rem;
  margin-bottom: 1rem;
  transition: var(--transition);
  border: 0.5px solid var(--border-color);
}

.card:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.3);
}

/* Section Styles */
.section {
  padding: 1rem;
  max-width: 400px;
  margin: 0 auto;
  min-height: calc(100vh - 68px);
}

/* Auth Section */
.auth-container {
  text-align: center;
  padding: 1.2rem;
}

.auth-tabs {
  display: flex;
  justify-content: center;
  margin: 1rem 0;
}

.auth-tab {
  background: none;
  border: none;
  font-size: 0.85rem;
  padding: 0.3rem 1rem;
  margin: 0 0.3rem;
  color: var(--light-text);
  cursor: pointer;
  position: relative;
  transition: var(--transition);
}

.auth-tab.active {
  color: var(--primary-color);
  font-weight: 500;
}

.auth-tab.active::after {
  content: '';
  position: absolute;
  bottom: -3px;
  left: 0;
  width: 100%;
  height: 2px;
  background-color: var(--primary-color);
  border-radius: 2px;
}

.auth-form {
  display: flex;
  flex-direction: column;
  gap: 0.7rem;
}

/* Input Styles */
input {
  width: 100%;
  padding: 0.65rem;
  border: 0.5px solid var(--border-color);
  border-radius: var(--small-radius);
  font-size: 0.85rem;
  font-family: 'SF Pro Text', -apple-system, BlinkMacSystemFont, 'Inter', Helvetica, Arial, sans-serif;
  transition: var(--transition);
  outline: none;
  -webkit-appearance: none;
  background-color: #2C2C2E;
  color: var(--text-color);
}

input:focus {
  border-color: var(--primary-color);
  box-shadow: 0 0 0 2px rgba(10, 132, 255, 0.2);
}

input::placeholder {
  color: #6E6E73;
}

/* Button Styles */
button {
  background-color: var(--primary-color);
  color: #FFFFFF;
  border: none;
  border-radius: var(--small-radius);
  padding: 0.65rem 1rem;
  font-size: 0.85rem;
  font-weight: 500;
  font-family: 'SF Pro Text', -apple-system, BlinkMacSystemFont, 'Inter', Helvetica, Arial, sans-serif;
  cursor: pointer;
  transition: var(--transition);
}

button:hover {
  background-color: var(--primary-dark);
  transform: translateY(-1px);
}

/* Bottom Navigation */
.bottom-nav {
  position: fixed;
  bottom: 0;
  left: 0;
  width: 100%;
  background-color: rgba(28, 28, 30, 0.92);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  display: flex;
  justify-content: space-around;
  padding: 0.7rem 0;
  box-shadow: 0 -1px 10px rgba(0, 0, 0, 0.1);
  z-index: 100;
  border-top: 0.5px solid var(--border-color);
}

.nav-btn {
  display: flex;
  flex-direction: column;
  align-items: center;
  background: none;
  border: none;
  color: var(--light-text);
  font-size: 0.65rem;
  padding: 0.3rem;
  transition: var(--transition);
}

.nav-btn i {
  font-size: 1rem;
  margin-bottom: 0.15rem;
}

.nav-btn.active {
  color: var(--primary-color);
}

/* User Info */
.user-info {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 1rem;
}

.balance {
  font-size: 1rem;
  margin-top: 0.3rem;
  color: var(--primary-color);
}

/* Description Card */
.description-card {
  border-left: 3px solid var(--primary-color);
  border-radius: 12px 16px 16px 12px;
}

.description-header {
  display: flex;
  align-items: center;
  margin-bottom: 0.7rem;
}

.description-header i {
  color: var(--primary-color);
  font-size: 1.2rem;
  margin-right: 0.5rem;
}

.version-info {
  display: flex;
  justify-content: space-between;
  margin-bottom: 0.7rem;
  font-size: 0.75rem;
}

.version-tag {
  background-color: #2C2C2E;
  padding: 0.15rem 0.35rem;
  border-radius: 4px;
  font-weight: 500;
}

.update-date {
  color: var(--light-text);
}

.feature-list {
  margin-top: 1rem;
}

.feature-item {
  display: flex;
  align-items: center;
  margin-bottom: 0.5rem;
}

.feature-item i {
  color: var(--primary-color);
  margin-right: 0.5rem;
  width: 1.2rem;
  text-align: center;
}

/* Referral Section */
.referral-info {
  text-align: center;
}

#referral-code {
  font-weight: 600;
  color: var(--primary-color);
  padding: 0.35rem;
  background-color: #2C2C2E;
  border-radius: 6px;
  margin: 0 0.3rem;
}

/* Withdrawal Section */
#withdrawal-form {
  display: flex;
  flex-direction: column;
  gap: 0.7rem;
}

/* Admin Section */
.admin-stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(110px, 1fr));
  gap: 0.7rem;
  margin-bottom: 1rem;
}

.stat-card {
  text-align: center;
  padding: 0.7rem;
  border-radius: var(--small-radius);
}

.stat-card p {
  font-size: 1.2rem;
  font-weight: 600;
  color: var(--primary-color);
}

/* Leaderboard */
.leaderboard-tabs {
  display: flex;
  justify-content: center;
  margin-bottom: 1rem;
}

.leaderboard-tab {
  background: none;
  border: none;
  font-size: 0.85rem;
  padding: 0.3rem 1rem;
  margin: 0 0.3rem;
  color: var(--light-text);
  cursor: pointer;
  position: relative;
  transition: var(--transition);
}

.leaderboard-tab.active {
  color: var(--primary-color);
  font-weight: 500;
}

.leaderboard-tab.active::after {
  content: '';
  position: absolute;
  bottom: -3px;
  left: 0;
  width: 100%;
  height: 2px;
  background-color: var(--primary-color);
  border-radius: 2px;
}

/* Custom Alert */
#custom-alert {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.6);
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: 1000;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

.alert-content {
  width: 85%;
  max-width: 320px;
  text-align: center;
  background-color: var(--card-bg);
  border-radius: var(--border-radius);
  padding: 1.2rem;
  border: 0.5px solid var(--border-color);
}

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

/* Footer */
.footer {
  background-color: var(--card-bg);
  padding: 1rem;
  text-align: center;
  font-size: 0.75rem;
  color: var(--light-text);
  margin-top: 1.2rem;
  border-top: 0.5px solid var(--border-color);
}

.footer-bottom {
  margin-top: 0.7rem;
  padding-top: 0.7rem;
  border-top: 0.5px solid #3A3A3C;
}

.standard-link {
  color: var(--primary-color);
  text-decoration: none;
  transition: var(--transition);
}

.standard-link:hover {
  text-decoration: underline;
}

/* Tasks Container */
#tasks-container {
  display: grid;
  gap: 0.8rem;
}

.task-card {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.8rem;
  border-radius: var(--small-radius);
  background-color: var(--card-bg);
  box-shadow: var(--shadow);
  transition: var(--transition);
  border-left: 3px solid var(--primary-color);
}

.task-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
}

.task-info {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
}

.task-title {
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--text-color);
}

.task-description {
  color: var(--light-text);
  font-size: 0.8rem;
  line-height: 1.3;
}

.task-reward {
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--primary-color);
  background-color: rgba(10, 132, 255, 0.15);
  padding: 0.3rem 0.6rem;
  border-radius: 12px;
  display: flex;
  align-items: center;
  gap: 0.3rem;
}

.task-reward i {
  font-size: 0.8rem;
}

.task-status {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-top: 0.3rem;
}

.task-progress {
  height: 4px;
  background-color: #2C2C2E;
  border-radius: 2px;
  width: 100%;
  overflow: hidden;
}

.progress-bar {
  height: 100%;
  background-color: var(--primary-color);
  border-radius: 2px;
  transition: width 0.3s ease;
}

.task-button {
  padding: 0.4rem 0.8rem;
  font-size: 0.8rem;
  border-radius: 10px;
  background-color: var(--primary-color);
  color: #FFFFFF;
  border: none;
  cursor: pointer;
  transition: var(--transition);
  white-space: nowrap;
}

.task-button:hover {
  background-color: var(--primary-dark);
  transform: translateY(-1px);
}

.task-button.completed {
  background-color: var(--success);
  cursor: default;
}

.task-button.in-progress {
  background-color: var(--warning);
  color: #000000;
}

@media (max-width: 480px) {
  .task-card {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.7rem;
  }
  
  .task-reward {
    align-self: flex-start;
  }
}

/* Responsive adjustments */
@media (max-width: 480px) {
  h1 {
    font-size: 1.6rem;
  }
  
  h2 {
    font-size: 1.3rem;
  }
  
  .section {
    padding: 0.7rem;
  }
  
  .card {
    padding: 0.9rem;
  }
  
  .nav-btn span {
    display: none;
  }
  
  .nav-btn i {
    font-size: 1.2rem;
    margin-bottom: 0;
  }
}

/* iOS-specific Enhancements */
.card, 
.task-card, 
.stat-card, 
.alert-content, 
button, 
input {
  box-shadow: 0 0 0 0.5px rgba(255, 255, 255, 0.05), var(--shadow);
}

button, 
.task-button {
  font-weight: 500;
  letter-spacing: -0.01em;
}

/* Animation for page transitions */
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: translateY(0); }
}

.section {
  animation: fadeIn 0.2s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

/* iOS style pill buttons */
.pill-button {
  border-radius: 20px;
  font-size: 0.8rem;
  padding: 0.5rem 1rem;
  font-weight: 500;
}

/* Action sheets */
.action-sheet {
  position: fixed;
  bottom: 0;
  left: 0;
  width: 100%;
  background-color: var(--card-bg);
  border-radius: 20px 20px 0 0;
  padding: 1rem;
  z-index: 200;
  transform: translateY(100%);
  transition: transform 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.action-sheet.active {
  transform: translateY(0);
}

.action-sheet-backdrop {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.5);
  z-index: 199;
  opacity: 0;
  transition: opacity 0.3s ease;
  pointer-events: none;
}

.action-sheet-backdrop.active {
  opacity: 1;
  pointer-events: all;
}

/* iOS style toggle */
.toggle-switch {
  position: relative;
  display: inline-block;
  width: 50px;
  height: 28px;
}

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

.toggle-slider {
  position: absolute;
  cursor: pointer;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: #3A3A3C;
  transition: .3s;
  border-radius: 34px;
}

.toggle-slider:before {
  position: absolute;
  content: "";
  height: 24px;
  width: 24px;
  left: 2px;
  bottom: 2px;
  background-color: white;
  transition: .3s;
  border-radius: 50%;
}

input:checked + .toggle-slider {
  background-color: var(--primary-color);
}

input:checked + .toggle-slider:before {
  transform: translateX(22px);
}

/* iOS segmented control */
.segmented-control {
  display: flex;
  background-color: #2C2C2E;
  border-radius: 8px;
  overflow: hidden;
  padding: 2px;
}

.segment {
  flex: 1;
  text-align: center;
  padding: 6px 8px;
  font-size: 0.8rem;
  border-radius: 6px;
  transition: var(--transition);
}

.segment.active {
  background-color: var(--primary-color);
  color: white;
}
