/* Glassmorphism Design System for LMS Platform */

/* Global Variables */
:root {
  --glass-bg: rgba(255, 255, 255, 0.1);
  --glass-border: rgba(255, 255, 255, 0.2);
  --glass-shadow: 0 8px 32px 0 rgba(31, 38, 135, 0.37);
  --glass-backdrop: blur(8px);
  --glass-hover-bg: rgba(255, 255, 255, 0.15);
  --glass-active-bg: rgba(255, 255, 255, 0.2);
  --dark-glass-bg: rgba(0, 0, 0, 0.1);
  --dark-glass-border: rgba(255, 255, 255, 0.1);
  
  /* Royal Green Theme Colors */
  --royal-green: #1b5e20;
  --royal-green-light: #4caf50;
  --royal-green-dark: #0d4716;
  --royal-green-accent: #81c784;
}

/* Base Glass Effect */
.glass {
  background: var(--glass-bg);
  backdrop-filter: var(--glass-backdrop);
  -webkit-backdrop-filter: var(--glass-backdrop);
  border: 1px solid var(--glass-border);
  box-shadow: var(--glass-shadow);
  border-radius: 16px;
  position: relative;
  overflow: hidden;
}

.glass::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.4), transparent);
  z-index: 1;
}

/* Glass Buttons */
.glass-button {
  background: var(--glass-bg);
  backdrop-filter: var(--glass-backdrop);
  -webkit-backdrop-filter: var(--glass-backdrop);
  border: 1px solid var(--glass-border);
  box-shadow: var(--glass-shadow);
  border-radius: 12px;
  padding: 12px 24px;
  color: rgba(255, 255, 255, 1);
  font-weight: 600;
  text-shadow: 0 1px 2px rgba(0, 0, 0, 0.5);
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
  overflow: hidden;
  cursor: pointer;
  user-select: none;
}

.glass-button::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
  transition: left 0.5s;
  z-index: 1;
}

.glass-button:hover {
  background: var(--glass-hover-bg);
  transform: translateY(-2px);
  box-shadow: 0 12px 40px 0 rgba(31, 38, 135, 0.4);
}

.glass-button:hover::before {
  left: 100%;
}

.glass-button:active {
  background: var(--glass-active-bg);
  transform: translateY(0);
}

.glass-button-primary {
  background: rgba(27, 94, 32, 0.4);
  border: 1px solid rgba(76, 175, 80, 0.5);
  color: rgba(255, 255, 255, 1);
  text-shadow: 0 1px 2px rgba(0, 0, 0, 0.5);
}

.glass-button-secondary {
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.2);
  color: rgba(255, 255, 255, 0.9);
  text-shadow: 0 1px 2px rgba(0, 0, 0, 0.5);
}

.glass-button-success {
  background: rgba(27, 94, 32, 0.4);
  border: 1px solid rgba(76, 175, 80, 0.5);
  color: rgba(255, 255, 255, 1);
  text-shadow: 0 1px 2px rgba(0, 0, 0, 0.5);
}

.glass-button-warning {
  background: rgba(251, 191, 36, 0.3);
  border: 1px solid rgba(251, 191, 36, 0.4);
}

/* Glass Sliders */
.glass-slider {
  background: var(--glass-bg);
  backdrop-filter: var(--glass-backdrop);
  -webkit-backdrop-filter: var(--glass-backdrop);
  border: 1px solid var(--glass-border);
  border-radius: 20px;
  height: 8px;
  position: relative;
  overflow: hidden;
}

.glass-slider-track {
  width: 100%;
  height: 100%;
  background: rgba(255, 255, 255, 0.1);
  border-radius: inherit;
}

.glass-slider-thumb {
  width: 20px;
  height: 20px;
  background: var(--glass-bg);
  backdrop-filter: var(--glass-backdrop);
  -webkit-backdrop-filter: var(--glass-backdrop);
  border: 2px solid rgba(255, 255, 255, 0.3);
  border-radius: 50%;
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  cursor: pointer;
  transition: all 0.3s ease;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.1);
}

.glass-slider-thumb:hover {
  transform: translateY(-50%) scale(1.1);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.15);
}

/* Floating Tab Bars */
.glass-tab-bar {
  background: var(--glass-bg);
  backdrop-filter: var(--glass-backdrop);
  -webkit-backdrop-filter: var(--glass-backdrop);
  border: 1px solid var(--glass-border);
  box-shadow: var(--glass-shadow);
  border-radius: 16px;
  position: sticky;
  top: 20px;
  z-index: 100;
  margin: 20px;
  padding: 8px;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.glass-tab-bar.scrolled {
  transform: scale(0.95);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  background: rgba(255, 255, 255, 0.05);
}

.glass-tab {
  padding: 12px 20px;
  border-radius: 12px;
  color: rgba(255, 255, 255, 0.7);
  transition: all 0.3s ease;
  cursor: pointer;
  position: relative;
  overflow: hidden;
}

.glass-tab.active {
  background: rgba(255, 255, 255, 0.15);
  color: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

/* Floating Sidebars */
.glass-sidebar {
  background: var(--glass-bg);
  backdrop-filter: var(--glass-backdrop);
  -webkit-backdrop-filter: var(--glass-backdrop);
  border: 1px solid var(--glass-border);
  box-shadow: var(--glass-shadow);
  border-radius: 20px;
  position: fixed;
  top: 20px;
  left: 20px;
  bottom: 20px;
  width: 280px;
  z-index: 50;
  padding: 24px;
  overflow-y: auto;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.glass-sidebar::-webkit-scrollbar {
  width: 6px;
}

.glass-sidebar::-webkit-scrollbar-track {
  background: transparent;
}

.glass-sidebar::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, 0.2);
  border-radius: 3px;
}

.glass-sidebar::-webkit-scrollbar-thumb:hover {
  background: rgba(255, 255, 255, 0.3);
}

/* App Icons with Layered Effects */
.glass-icon {
  width: 60px;
  height: 60px;
  background: var(--glass-bg);
  backdrop-filter: var(--glass-backdrop);
  -webkit-backdrop-filter: var(--glass-backdrop);
  border: 1px solid var(--glass-border);
  border-radius: 16px;
  position: relative;
  overflow: hidden;
  cursor: pointer;
  transition: all 0.3s ease;
  display: flex;
  align-items: center;
  justify-content: center;
}

.glass-icon::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.1), transparent);
  z-index: 1;
}

.glass-icon::after {
  content: '';
  position: absolute;
  top: 2px;
  left: 2px;
  right: 2px;
  height: 30%;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.2), transparent);
  border-radius: 14px 14px 0 0;
  z-index: 2;
}

.glass-icon:hover {
  transform: translateY(-4px) scale(1.05);
  box-shadow: 0 16px 48px rgba(31, 38, 135, 0.4);
}

.glass-icon i {
  z-index: 3;
  position: relative;
  color: rgba(255, 255, 255, 0.9);
  font-size: 24px;
}

/* Glass Widgets */
.glass-widget {
  background: var(--glass-bg);
  backdrop-filter: var(--glass-backdrop);
  -webkit-backdrop-filter: var(--glass-backdrop);
  border: 1px solid var(--glass-border);
  box-shadow: var(--glass-shadow);
  border-radius: 20px;
  padding: 24px;
  position: relative;
  overflow: hidden;
  margin-bottom: 20px;
}

.glass-widget::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
}

/* Clock Component with 3D Effect */
.glass-clock {
  background: var(--glass-bg);
  backdrop-filter: blur(30px);
  -webkit-backdrop-filter: blur(30px);
  border: 1px solid var(--glass-border);
  border-radius: 24px;
  padding: 40px;
  text-align: center;
  position: relative;
  overflow: hidden;
  transform-style: preserve-3d;
}

.glass-clock::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: conic-gradient(from 0deg, transparent, rgba(255, 255, 255, 0.1), transparent);
  animation: clockRotate 20s linear infinite;
  z-index: -1;
}

.clock-time {
  font-size: 4rem;
  font-weight: 300;
  color: rgba(255, 255, 255, 0.95);
  text-shadow: 0 0 20px rgba(255, 255, 255, 0.3);
  transform: translateZ(20px);
}

.clock-date {
  font-size: 1.2rem;
  color: rgba(255, 255, 255, 0.7);
  margin-top: 8px;
  transform: translateZ(10px);
}

@keyframes clockRotate {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

/* Transparent Menu Bar */
.glass-menu-bar {
    background: rgba(0, 0, 0, 0.05);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: 44px;
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 20px;
}

.menu-bar-content {
  display: flex;
  align-items: center;
  gap: 20px;
}

.menu-bar-item {
  color: rgba(255, 255, 255, 0.8);
  font-size: 14px;
  font-weight: 500;
  padding: 6px 12px;
  border-radius: 8px;
  transition: all 0.2s ease;
  cursor: pointer;
  text-decoration: none;
}

.menu-bar-item:hover {
  background: rgba(255, 255, 255, 0.1);
  color: rgba(255, 255, 255, 0.95);
  text-decoration: none;
}

/* Content Adjustment for Transparent Menu */
.content-with-transparent-menu {
  padding-top: 64px;
}

/* Glass Cards */
.glass-card {
  background: var(--glass-bg);
  backdrop-filter: var(--glass-backdrop);
  -webkit-backdrop-filter: var(--glass-backdrop);
  border: 1px solid var(--glass-border);
  box-shadow: var(--glass-shadow);
  border-radius: 16px;
  padding: 24px;
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
}

.glass-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 16px 48px rgba(31, 38, 135, 0.4);
}

/* Glass Input Fields */
.glass-input {
  background: var(--glass-bg);
  backdrop-filter: var(--glass-backdrop);
  -webkit-backdrop-filter: var(--glass-backdrop);
  border: 1px solid var(--glass-border);
  border-radius: 12px;
  padding: 12px 16px;
  color: rgba(255, 255, 255, 0.9);
  font-size: 16px;
  transition: all 0.3s ease;
  width: 100%;
}

/* Glass Select/Dropdown */
.glass-select {
  background: var(--glass-bg);
  backdrop-filter: var(--glass-backdrop);
  -webkit-backdrop-filter: var(--glass-backdrop);
  border: 1px solid var(--glass-border);
  border-radius: 8px;
  padding: 8px 12px;
  color: rgba(255, 255, 255, 1);
  font-size: 14px;
  font-weight: 500;
  text-shadow: 0 1px 2px rgba(0, 0, 0, 0.5);
  transition: all 0.3s ease;
  cursor: pointer;
  min-width: 80px;
}

.glass-select:focus {
  outline: none;
  border-color: rgba(76, 175, 80, 0.5);
  box-shadow: 0 0 0 3px rgba(76, 175, 80, 0.2);
  background: rgba(255, 255, 255, 0.15);
}

.glass-select option {
  background: rgba(27, 94, 32, 0.9);
  color: white;
  padding: 8px;
}

.glass-input::placeholder {
  color: rgba(255, 255, 255, 0.5);
}

.glass-input:focus {
  outline: none;
  border-color: rgba(59, 130, 246, 0.5);
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
  background: rgba(255, 255, 255, 0.05);
}

/* Responsive Design */
@media (max-width: 768px) {
  .glass-sidebar {
    width: 100%;
    left: 0;
    right: 0;
    top: auto;
    bottom: 0;
    height: 60%;
    border-radius: 20px 20px 0 0;
  }
  
  .glass-tab-bar {
    margin: 10px;
    border-radius: 12px;
  }
  
  .clock-time {
    font-size: 2.5rem;
  }
}

/* Dark Mode Adjustments */
@media (prefers-color-scheme: dark) {
  :root {
    --glass-bg: rgba(0, 0, 0, 0.2);
    --glass-border: rgba(255, 255, 255, 0.1);
    --glass-hover-bg: rgba(255, 255, 255, 0.05);
    --glass-active-bg: rgba(255, 255, 255, 0.1);
  }
}


/* Animation Classes */
.glass-fade-in {
  animation: glassFadeIn 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

@keyframes glassFadeIn {
  from {
    opacity: 0;
    transform: translateY(20px) scale(0.95);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

.glass-slide-up {
  animation: glassSlideUp 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

@keyframes glassSlideUp {
  from {
    transform: translateY(100%);
  }
  to {
    transform: translateY(0);
  }
}