/* ============================================
   Project Modal - Pure Liquid Glass Design 2025
   Academic Project Showcase (Non-Commercial)
   Based on Apple WWDC 2025 Liquid Glass Language
   
   Design Constraints:
   ❌ No box-shadow
   ❌ No glow effects  
   ❌ No inner highlights
   ✅ Pure backdrop-filter glass
   ✅ Semi-transparent borders
   ✅ Smooth transforms only
   ============================================ */

/* Overlay - Enhanced backdrop blur with refraction */
.project-modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(20px) saturate(180%) brightness(0.85) contrast(1.1);
  -webkit-backdrop-filter: blur(20px) saturate(180%) brightness(0.85) contrast(1.1);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 10000;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.4s cubic-bezier(0.4, 0, 0.2, 1), 
              visibility 0.4s cubic-bezier(0.4, 0, 0.2, 1),
              backdrop-filter 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  padding: 20px;
  overflow-y: auto;
}

.project-modal-overlay.show {
  opacity: 1;
  visibility: visible;
}

/* Modal Container - Pure Liquid Glass (40px blur) */
.project-modal {
  position: relative;
  max-width: 580px;
  width: 100%;
  background: rgba(255, 255, 255, 0.35);
  backdrop-filter: blur(40px) saturate(180%) brightness(1.08) contrast(1.1);
  -webkit-backdrop-filter: blur(40px) saturate(180%) brightness(1.08) contrast(1.1);
  border-radius: 24px;
  border: 1.5px solid rgba(255, 255, 255, 0.5);
  /* 主容器玻璃边缘高光 - 单层光晕 */
  box-shadow: 
    inset 0 2px 0 rgba(255, 255, 255, 0.5),
    inset 0 -1px 0 rgba(255, 255, 255, 0.2),
    inset 2px 0 0 rgba(255, 255, 255, 0.25),
    inset -2px 0 0 rgba(255, 255, 255, 0.25),
    0 0 0 1px rgba(245, 245, 250, 0.3);
  transform: scale(0.9) translateY(40px);
  opacity: 0;
  transition: transform 0.5s cubic-bezier(0.34, 1.56, 0.64, 1),
              opacity 0.5s cubic-bezier(0.4, 0, 0.2, 1),
              backdrop-filter 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  will-change: transform, opacity;
}

.project-modal-overlay.show .project-modal {
  transform: scale(1) translateY(0);
  opacity: 1;
}

/* Dark Mode - Deep glass with enhanced saturation */
body.dark-mode .project-modal,
[data-theme="dark"] .project-modal {
  background: rgba(30, 41, 59, 0.4);
  backdrop-filter: blur(40px) saturate(180%) brightness(0.95) contrast(1.1);
  -webkit-backdrop-filter: blur(40px) saturate(180%) brightness(0.95) contrast(1.1);
  border: 1.5px solid rgba(71, 85, 105, 0.6);
  /* 暗黑模式主容器边缘高光 - 单层光晕 */
  box-shadow: 
    inset 0 2px 0 rgba(255, 255, 255, 0.15),
    inset 0 -1px 0 rgba(255, 255, 255, 0.08),
    inset 2px 0 0 rgba(255, 255, 255, 0.1),
    inset -2px 0 0 rgba(255, 255, 255, 0.1),
    0 0 0 1px rgba(100, 120, 140, 0.25);
}

body.dark-mode .project-modal-overlay,
[data-theme="dark"] .project-modal-overlay {
  background: rgba(0, 0, 0, 0.65);
  backdrop-filter: blur(20px) saturate(180%) brightness(0.7) contrast(1.1);
  -webkit-backdrop-filter: blur(20px) saturate(180%) brightness(0.7) contrast(1.1);
}

/* Header Section - Glass layer */
.project-modal-header {
  text-align: center;
  padding: 28px 28px 20px;
  border-bottom: 1px solid rgba(0, 0, 0, 0.06);
  background: linear-gradient(135deg, 
    rgba(248, 250, 252, 0.18) 0%, 
    rgba(255, 255, 255, 0.1) 100%);
  backdrop-filter: blur(20px) saturate(160%) contrast(1.08);
  -webkit-backdrop-filter: blur(20px) saturate(160%) contrast(1.08);
  /* Header顶部边缘高光 - 单层 */
  box-shadow: 
    inset 0 2px 0 rgba(255, 255, 255, 0.4),
    inset 2px 0 0 rgba(255, 255, 255, 0.25),
    inset -2px 0 0 rgba(255, 255, 255, 0.25);
  border-radius: 24px 24px 0 0;
}

body.dark-mode .project-modal-header,
[data-theme="dark"] .project-modal-header {
  background: linear-gradient(135deg, 
    rgba(30, 41, 59, 0.22) 0%, 
    rgba(15, 23, 42, 0.15) 100%);
  backdrop-filter: blur(20px) saturate(160%) contrast(1.08);
  -webkit-backdrop-filter: blur(20px) saturate(160%) contrast(1.08);
  border-bottom-color: rgba(71, 85, 105, 0.3);
  /* 暗黑模式Header边缘高光 - 单层 */
  box-shadow: 
    inset 0 2px 0 rgba(255, 255, 255, 0.15),
    inset 2px 0 0 rgba(255, 255, 255, 0.1),
    inset -2px 0 0 rgba(255, 255, 255, 0.1);
}

/* Header Icon - Pure gradient, no shadow */
.project-modal-icon-wrapper {
  display: flex;
  justify-content: center;
  margin-bottom: 14px;
}

.project-modal-icon {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  background: linear-gradient(135deg, #DAA520 0%, #F0D878 50%, #B8941C 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  border: 2px solid rgba(218, 165, 32, 0.3);
  position: relative;
  transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.project-modal-icon:hover {
  transform: scale(1.05) rotate(5deg);
}

.project-modal-icon svg {
  width: 30px;
  height: 30px;
  color: #ffffff;
  stroke: #ffffff;
  filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.2));
}

/* Title & Subtitle */
.project-modal-title {
  font-size: 24px;
  font-weight: 700;
  line-height: 1.3;
  color: #1a202c;
  margin: 0 0 8px 0;
  letter-spacing: -0.02em;
}

body.dark-mode .project-modal-title,
[data-theme="dark"] .project-modal-title {
  color: #f8fafc;
}

.project-modal-subtitle {
  font-size: 14px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  background: linear-gradient(90deg, #FFD700 0%, #60a5fa 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin: 0;
  opacity: 1;
}

body.dark-mode .project-modal-subtitle,
[data-theme="dark"] .project-modal-subtitle {
  background: linear-gradient(90deg, #FFEB99 0%, #93C5FD 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* Body Section - Nested glass layer */
.project-modal-body {
  padding: 22px 28px 26px;
  background: linear-gradient(135deg, 
    rgba(255, 255, 255, 0.12) 0%, 
    rgba(255, 255, 255, 0.08) 100%);
  backdrop-filter: blur(30px) saturate(160%) contrast(1.1);
  -webkit-backdrop-filter: blur(30px) saturate(160%) contrast(1.1);
}

body.dark-mode .project-modal-body,
[data-theme="dark"] .project-modal-body {
  background: linear-gradient(135deg, 
    rgba(30, 41, 59, 0.15) 0%, 
    rgba(15, 23, 42, 0.1) 100%);
  backdrop-filter: blur(30px) saturate(160%) contrast(1.1);
  -webkit-backdrop-filter: blur(30px) saturate(160%) contrast(1.1);
}

/* ===== Academic Notice - Prominent Warning ===== */
.project-academic-notice {
  background: linear-gradient(135deg, 
    rgba(239, 68, 68, 0.08) 0%,
    rgba(249, 115, 22, 0.06) 50%,
    rgba(234, 179, 8, 0.08) 100%);
  backdrop-filter: blur(16px) saturate(140%);
  -webkit-backdrop-filter: blur(16px) saturate(140%);
  border: 1.5px solid rgba(239, 68, 68, 0.25);
  border-radius: 16px;
  padding: 18px 20px;
  margin-bottom: 24px;
  position: relative;
  overflow: hidden;
}

body.dark-mode .project-academic-notice,
[data-theme="dark"] .project-academic-notice {
  background: linear-gradient(135deg, 
    rgba(239, 68, 68, 0.12) 0%,
    rgba(249, 115, 22, 0.1) 50%,
    rgba(234, 179, 8, 0.12) 100%);
  border-color: rgba(239, 68, 68, 0.35);
}

/* Academic Badge */
.academic-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: linear-gradient(135deg, 
    rgba(59, 130, 246, 0.12) 0%,
    rgba(99, 102, 241, 0.1) 100%);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid rgba(59, 130, 246, 0.3);
  border-radius: 24px;
  padding: 6px 14px;
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: #2563eb;
  margin-bottom: 12px;
}

.academic-badge svg {
  width: 16px;
  height: 16px;
  color: #2563eb;
  stroke: currentColor;
}

body.dark-mode .academic-badge,
[data-theme="dark"] .academic-badge {
  background: linear-gradient(135deg, 
    rgba(96, 165, 250, 0.15) 0%,
    rgba(129, 140, 248, 0.12) 100%);
  border-color: rgba(96, 165, 250, 0.4);
  color: #60a5fa;
}

body.dark-mode .academic-badge svg,
[data-theme="dark"] .academic-badge svg {
  color: #60a5fa;
}

/* Academic Notice Text */
.academic-notice-text {
  font-size: 13px;
  line-height: 1.65;
  color: #dc2626;
  margin: 0;
  font-weight: 500;
}

.academic-notice-text strong {
  font-weight: 700;
  color: #991b1b;
}

body.dark-mode .academic-notice-text,
[data-theme="dark"] .academic-notice-text {
  color: #fca5a5;
}

body.dark-mode .academic-notice-text strong,
[data-theme="dark"] .academic-notice-text strong {
  color: #fecaca;
}

/* Description */
.project-modal-description {
  font-size: 14.5px;
  line-height: 1.65;
  color: #475569;
  text-align: center;
  margin: 0 0 28px 0;
  max-width: 640px;
  margin-left: auto;
  margin-right: auto;
}

body.dark-mode .project-modal-description,
[data-theme="dark"] .project-modal-description {
  color: #cbd5e0;
}

/* Team Section */
.project-modal-team-section {
  margin-top: 28px;
}

.project-modal-team-title {
  font-size: 16px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: #2d3748;
  text-align: center;
  margin: 0 0 22px 0;
  position: relative;
  padding-bottom: 12px;
}

.project-modal-team-title::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 60px;
  height: 3px;
  background: linear-gradient(90deg, #DAA520 0%, #4a90e2 100%);
  border-radius: 2px;
}

body.dark-mode .project-modal-team-title,
[data-theme="dark"] .project-modal-team-title {
  color: #e2e8f0;
}

/* Team Grid Layout */
.project-modal-team-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 14px;
  margin-top: 20px;
}

/* Member Card - Pure glass with gradient background (clickable link) */
.project-modal-member-card {
  background: linear-gradient(135deg, 
    rgba(218, 165, 32, 0.03) 0%, 
    rgba(59, 130, 246, 0.04) 100%);
  backdrop-filter: blur(20px) saturate(170%) brightness(1.05) contrast(1.08);
  -webkit-backdrop-filter: blur(20px) saturate(170%) brightness(1.05) contrast(1.08);
  border-radius: 14px;
  padding: 18px 14px;
  /* 玻璃边缘高光描边 - 单层光晕 */
  border: 1.5px solid rgba(255, 255, 255, 0.6);
  box-shadow: 
    inset 0 1px 0 rgba(255, 255, 255, 0.4),
    inset 0 -1px 0 rgba(255, 255, 255, 0.15),
    inset 1px 0 0 rgba(255, 255, 255, 0.2),
    inset -1px 0 0 rgba(255, 255, 255, 0.2),
    0 0 0 1px rgba(240, 240, 245, 0.3);
  transition: transform 0.3s cubic-bezier(0.34, 1.2, 0.64, 1),
              backdrop-filter 0.3s cubic-bezier(0.4, 0, 0.2, 1),
              background-color 0.3s ease,
              border-color 0.3s ease,
              box-shadow 0.3s ease;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  position: relative;
  overflow: hidden;
  opacity: 0;
  animation: cardSlideIn 0.6s cubic-bezier(0.4, 0, 0.2, 1) forwards;
  text-decoration: none;
  cursor: pointer;
  color: inherit;
}

.project-modal-member-card:nth-child(1) {
  animation-delay: 0.1s;
}

.project-modal-member-card:nth-child(2) {
  animation-delay: 0.2s;
}

.project-modal-member-card:nth-child(3) {
  animation-delay: 0.3s;
}

/* Glass refraction overlay on hover */
.project-modal-member-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, 
    rgba(218, 165, 32, 0.08) 0%, 
    rgba(59, 130, 246, 0.1) 100%);
  opacity: 0;
  transition: opacity 0.3s ease;
  pointer-events: none;
}

.project-modal-member-card:hover {
  transform: translateY(-6px) scale(1.01);
  background: linear-gradient(135deg, 
    rgba(218, 165, 32, 0.06) 0%, 
    rgba(59, 130, 246, 0.08) 100%);
  backdrop-filter: blur(25px) saturate(190%) brightness(1.08) contrast(1.12);
  -webkit-backdrop-filter: blur(25px) saturate(190%) brightness(1.08) contrast(1.12);
  border: 1.5px solid rgba(255, 255, 255, 0.8);
  /* hover时增强玻璃边缘高光 - 白色单层光晕 */
  box-shadow: 
    inset 0 1px 0 rgba(255, 255, 255, 0.6),
    inset 0 -1px 0 rgba(255, 255, 255, 0.25),
    inset 1px 0 0 rgba(255, 255, 255, 0.35),
    inset -1px 0 0 rgba(255, 255, 255, 0.35),
    0 0 0 1px rgba(255, 255, 255, 0.5);
}

.project-modal-member-card:hover::before {
  opacity: 1;
}

body.dark-mode .project-modal-member-card,
[data-theme="dark"] .project-modal-member-card {
  background: linear-gradient(135deg, 
    rgba(240, 216, 120, 0.04) 0%, 
    rgba(96, 165, 250, 0.05) 100%);
  backdrop-filter: blur(20px) saturate(170%) contrast(1.08);
  -webkit-backdrop-filter: blur(20px) saturate(170%) contrast(1.08);
  border: 1.5px solid rgba(71, 85, 105, 0.6);
  /* 暗黑模式玻璃边缘高光 - 单层 */
  box-shadow: 
    inset 0 1px 0 rgba(255, 255, 255, 0.15),
    inset 0 -1px 0 rgba(255, 255, 255, 0.08),
    inset 1px 0 0 rgba(255, 255, 255, 0.1),
    inset -1px 0 0 rgba(255, 255, 255, 0.1),
    0 0 0 1px rgba(100, 120, 140, 0.3);
}

body.dark-mode .project-modal-member-card:hover,
[data-theme="dark"] .project-modal-member-card:hover {
  background: linear-gradient(135deg, 
    rgba(240, 216, 120, 0.08) 0%, 
    rgba(96, 165, 250, 0.1) 100%);
  backdrop-filter: blur(25px) saturate(190%) contrast(1.12);
  -webkit-backdrop-filter: blur(25px) saturate(190%) contrast(1.12);
  border: 1.5px solid rgba(255, 255, 255, 0.65);
  /* 暗黑模式hover增强边缘高光 - 白色单层光晕 */
  box-shadow: 
    inset 0 1px 0 rgba(255, 255, 255, 0.25),
    inset 0 -1px 0 rgba(255, 255, 255, 0.15),
    inset 1px 0 0 rgba(255, 255, 255, 0.18),
    inset -1px 0 0 rgba(255, 255, 255, 0.18),
    0 0 0 1px rgba(255, 255, 255, 0.4);
}

/* Member Avatar - Pure gradient glass */
.member-avatar {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: linear-gradient(135deg, #DAA520 0%, #F0D878 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 12px;
  border: 2px solid rgba(218, 165, 32, 0.3);
  transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
}

.project-modal-member-card:hover .member-avatar {
  transform: scale(1.1) rotate(8deg);
}

.member-avatar svg {
  width: 26px;
  height: 26px;
  color: #ffffff;
  stroke: #ffffff;
  filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.15));
}

/* Member Info */
.member-info {
  display: flex;
  flex-direction: column;
  align-items: center;
  width: 100%;
  flex: 1;
  justify-content: space-between;
}

.member-name {
  font-size: 14.5px;
  font-weight: 700;
  color: #1a202c;
  margin: 0 0 10px 0;
  line-height: 1.3;
  letter-spacing: -0.01em;
}

body.dark-mode .member-name,
[data-theme="dark"] .member-name {
  color: #f8fafc;
}

/* Member Email Display - Vertical layout, centered, at bottom */
.member-email {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  font-size: 10.5px;
  color: #2563eb;
  padding: 7px 10px;
  border-radius: 8px;
  background: transparent;
  max-width: 100%;
  pointer-events: none;
  margin-top: auto;
}

.member-email svg {
  flex-shrink: 0;
  color: currentColor;
  width: 20px;
  height: 20px;
}

.member-email span {
  white-space: nowrap;
  text-align: center;
}

body.dark-mode .member-email,
[data-theme="dark"] .member-email {
  color: #60a5fa;
}

/* Footer Section - Glass layer */
.project-modal-footer {
  padding: 20px 28px 28px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 14px;
  border-top: 1px solid rgba(0, 0, 0, 0.06);
  background: linear-gradient(135deg, 
    rgba(241, 245, 249, 0.18) 0%, 
    rgba(255, 255, 255, 0.1) 100%);
  backdrop-filter: blur(15px) saturate(160%) contrast(1.08);
  -webkit-backdrop-filter: blur(15px) saturate(160%) contrast(1.08);
  /* Footer底部和侧边高光 - 单层 */
  box-shadow: 
    inset 0 1px 0 rgba(255, 255, 255, 0.35),
    inset 0 -2px 0 rgba(255, 255, 255, 0.25),
    inset 2px 0 0 rgba(255, 255, 255, 0.2),
    inset -2px 0 0 rgba(255, 255, 255, 0.2);
  border-radius: 0 0 24px 24px;
}

body.dark-mode .project-modal-footer,
[data-theme="dark"] .project-modal-footer {
  background: linear-gradient(135deg, 
    rgba(30, 41, 59, 0.18) 0%, 
    rgba(15, 23, 42, 0.1) 100%);
  backdrop-filter: blur(15px) saturate(160%) contrast(1.08);
  -webkit-backdrop-filter: blur(15px) saturate(160%) contrast(1.08);
  border-top-color: rgba(71, 85, 105, 0.3);
  /* 暗黑模式Footer边缘高光 - 单层 */
  box-shadow: 
    inset 0 1px 0 rgba(255, 255, 255, 0.15),
    inset 0 -2px 0 rgba(255, 255, 255, 0.1),
    inset 2px 0 0 rgba(255, 255, 255, 0.08),
    inset -2px 0 0 rgba(255, 255, 255, 0.08);
}

/* ===== Checkbox - Liquid Glass Design ===== */
.project-modal-checkbox-wrapper {
  display: flex;
  justify-content: center;
  width: 100%;
}

.project-modal-checkbox-label {
  display: flex;
  align-items: center;
  gap: 10px;
  cursor: pointer;
  user-select: none;
  padding: 8px 16px;
  border-radius: 10px;
  background: linear-gradient(135deg, 
    rgba(255, 255, 255, 0.08) 0%, 
    rgba(255, 255, 255, 0.05) 100%);
  backdrop-filter: blur(16px) saturate(140%);
  -webkit-backdrop-filter: blur(16px) saturate(140%);
  border: 1px solid rgba(255, 255, 255, 0.2);
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.project-modal-checkbox-label:hover {
  background: linear-gradient(135deg, 
    rgba(255, 255, 255, 0.12) 0%, 
    rgba(255, 255, 255, 0.08) 100%);
  border-color: rgba(255, 255, 255, 0.35);
  transform: translateY(-1px);
}

body.dark-mode .project-modal-checkbox-label,
[data-theme="dark"] .project-modal-checkbox-label {
  background: linear-gradient(135deg, 
    rgba(71, 85, 105, 0.15) 0%, 
    rgba(51, 65, 85, 0.12) 100%);
  border-color: rgba(71, 85, 105, 0.4);
}

body.dark-mode .project-modal-checkbox-label:hover,
[data-theme="dark"] .project-modal-checkbox-label:hover {
  background: linear-gradient(135deg, 
    rgba(71, 85, 105, 0.22) 0%, 
    rgba(51, 65, 85, 0.18) 100%);
  border-color: rgba(71, 85, 105, 0.55);
}

/* Hide default checkbox */
.project-modal-checkbox-input {
  position: absolute;
  opacity: 0;
  width: 0;
  height: 0;
}

/* Custom Checkbox - Liquid Glass */
.project-modal-checkbox-custom {
  position: relative;
  width: 20px;
  height: 20px;
  border-radius: 6px;
  background: linear-gradient(135deg, 
    rgba(255, 255, 255, 0.15) 0%, 
    rgba(255, 255, 255, 0.08) 100%);
  backdrop-filter: blur(12px) saturate(130%);
  -webkit-backdrop-filter: blur(12px) saturate(130%);
  border: 1.5px solid rgba(218, 165, 32, 0.3);
  transition: all 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
  flex-shrink: 0;
}

body.dark-mode .project-modal-checkbox-custom,
[data-theme="dark"] .project-modal-checkbox-custom {
  background: linear-gradient(135deg, 
    rgba(71, 85, 105, 0.2) 0%, 
    rgba(51, 65, 85, 0.15) 100%);
  border-color: rgba(218, 165, 32, 0.4);
}

/* Checkbox checked state */
.project-modal-checkbox-input:checked + .project-modal-checkbox-custom {
  background: linear-gradient(135deg, 
    rgba(218, 165, 32, 0.5) 0%, 
    rgba(240, 216, 120, 0.45) 50%, 
    rgba(184, 148, 28, 0.55) 100%);
  backdrop-filter: blur(16px) saturate(160%);
  -webkit-backdrop-filter: blur(16px) saturate(160%);
  border-color: rgba(218, 165, 32, 0.7);
  transform: scale(1.05);
}

body.dark-mode .project-modal-checkbox-input:checked + .project-modal-checkbox-custom,
[data-theme="dark"] .project-modal-checkbox-input:checked + .project-modal-checkbox-custom {
  background: linear-gradient(135deg, 
    rgba(218, 165, 32, 0.55) 0%, 
    rgba(240, 216, 120, 0.5) 50%, 
    rgba(184, 148, 28, 0.6) 100%);
  border-color: rgba(218, 165, 32, 0.75);
}

/* Checkmark icon */
.project-modal-checkbox-custom::after {
  content: '';
  position: absolute;
  display: none;
  left: 6px;
  top: 2px;
  width: 5px;
  height: 10px;
  border: solid #ffffff;
  border-width: 0 2px 2px 0;
  transform: rotate(45deg);
  filter: drop-shadow(0 1px 2px rgba(0, 0, 0, 0.2));
}

.project-modal-checkbox-input:checked + .project-modal-checkbox-custom::after {
  display: block;
  animation: checkmarkPop 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
}

@keyframes checkmarkPop {
  0% {
    transform: rotate(45deg) scale(0);
    opacity: 0;
  }
  50% {
    transform: rotate(45deg) scale(1.2);
  }
  100% {
    transform: rotate(45deg) scale(1);
    opacity: 1;
  }
}

/* Checkbox text */
.project-modal-checkbox-text {
  font-size: 13px;
  font-weight: 500;
  color: #475569;
  letter-spacing: 0.01em;
  transition: color 0.3s ease;
}

body.dark-mode .project-modal-checkbox-text,
[data-theme="dark"] .project-modal-checkbox-text {
  color: #cbd5e0;
}

.project-modal-checkbox-label:hover .project-modal-checkbox-text {
  color: #334155;
}

body.dark-mode .project-modal-checkbox-label:hover .project-modal-checkbox-text,
[data-theme="dark"] .project-modal-checkbox-label:hover .project-modal-checkbox-text {
  color: #e2e8f0;
}

/* Button - Pure Liquid Glass (No shadow, pure refraction) */
.project-modal-button {
  width: 100%;
  max-width: 200px;
  padding: 11px 28px;
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.03em;
  color: #ffffff;
  background: linear-gradient(135deg, 
    rgba(218, 165, 32, 0.38) 0%, 
    rgba(240, 216, 120, 0.35) 50%, 
    rgba(184, 148, 28, 0.42) 100%);
  backdrop-filter: blur(20px) saturate(200%) contrast(1.1);
  -webkit-backdrop-filter: blur(20px) saturate(200%) contrast(1.1);
  border: 1.5px solid rgba(218, 165, 32, 0.6);
  border-radius: 12px;
  cursor: pointer;
  transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}

.project-modal-button:hover {
  background: linear-gradient(135deg, 
    rgba(218, 165, 32, 0.52) 0%, 
    rgba(240, 216, 120, 0.48) 50%, 
    rgba(184, 148, 28, 0.56) 100%);
  backdrop-filter: blur(24px) saturate(220%) contrast(1.12);
  -webkit-backdrop-filter: blur(24px) saturate(220%) contrast(1.12);
  border-color: rgba(218, 165, 32, 0.75);
  transform: translateY(-2px) scale(1.01);
}

.project-modal-button:active {
  transform: translateY(0) scale(0.98);
}

/* Dark mode glass button */
body.dark-mode .project-modal-button,
[data-theme="dark"] .project-modal-button {
  background: linear-gradient(135deg, 
    rgba(218, 165, 32, 0.35) 0%, 
    rgba(240, 216, 120, 0.3) 50%, 
    rgba(184, 148, 28, 0.38) 100%);
  border-color: rgba(218, 165, 32, 0.6);
}

body.dark-mode .project-modal-button:hover,
[data-theme="dark"] .project-modal-button:hover {
  background: linear-gradient(135deg, 
    rgba(218, 165, 32, 0.48) 0%, 
    rgba(240, 216, 120, 0.44) 50%, 
    rgba(184, 148, 28, 0.52) 100%);
  backdrop-filter: blur(24px) saturate(220%) contrast(1.12);
  -webkit-backdrop-filter: blur(24px) saturate(220%) contrast(1.12);
  border-color: rgba(218, 165, 32, 0.75);
}

/* Animations */
@keyframes cardSlideIn {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Close Button (X) - Glass style */
.project-modal-close {
  position: absolute;
  top: 20px;
  right: 20px;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.3);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid rgba(0, 0, 0, 0.08);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all 0.25s ease;
  color: #64748b;
}

.project-modal-close:hover {
  background: rgba(239, 68, 68, 0.15);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-color: rgba(239, 68, 68, 0.3);
  color: #dc2626;
  transform: rotate(90deg);
}

body.dark-mode .project-modal-close,
[data-theme="dark"] .project-modal-close {
  background: rgba(45, 55, 72, 0.5);
  border-color: rgba(71, 85, 105, 0.3);
  color: #94a3b8;
}

body.dark-mode .project-modal-close:hover,
[data-theme="dark"] .project-modal-close:hover {
  background: rgba(239, 68, 68, 0.2);
  border-color: rgba(239, 68, 68, 0.4);
  color: #f87171;
}

/* Responsive Design - Performance optimized */

/* Tablet */
@media (max-width: 992px) {
  .project-modal {
    max-width: 90%;
    backdrop-filter: blur(32px) saturate(145%) contrast(1.05);
    -webkit-backdrop-filter: blur(32px) saturate(145%) contrast(1.05);
  }

  .project-modal-team-grid {
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 16px;
  }
}

/* Mobile */
@media (max-width: 768px) {
  .project-modal {
    max-width: 94%;
    border-radius: 24px;
    backdrop-filter: blur(24px) saturate(135%) contrast(1.05);
    -webkit-backdrop-filter: blur(24px) saturate(135%) contrast(1.05);
  }

  .project-modal-overlay {
    backdrop-filter: blur(16px) saturate(160%) contrast(1.08);
    -webkit-backdrop-filter: blur(16px) saturate(160%) contrast(1.08);
  }

  .project-modal-header {
    padding: 28px 24px 20px;
    backdrop-filter: blur(16px) contrast(1.05);
    -webkit-backdrop-filter: blur(16px) contrast(1.05);
  }

  .project-modal-icon {
    width: 64px;
    height: 64px;
  }

  .project-modal-icon svg {
    width: 30px;
    height: 30px;
  }

  .project-modal-title {
    font-size: 24px;
  }

  .project-modal-subtitle {
    font-size: 12.5px;
  }

  .project-modal-body {
    padding: 24px 24px 28px;
    backdrop-filter: blur(24px) contrast(1.05);
    -webkit-backdrop-filter: blur(24px) contrast(1.05);
  }

  .project-academic-notice {
    padding: 16px 18px;
    backdrop-filter: blur(14px) contrast(1.05);
    -webkit-backdrop-filter: blur(14px) contrast(1.05);
  }

  .academic-notice-text {
    font-size: 12.5px;
  }

  .project-modal-description {
    font-size: 13.5px;
    margin-bottom: 24px;
  }

  .project-modal-team-title {
    font-size: 15px;
  }

  .project-modal-team-grid {
    grid-template-columns: 1fr;
    gap: 14px;
  }

  .project-modal-member-card {
    padding: 20px 16px;
    backdrop-filter: blur(16px) contrast(1.05);
    -webkit-backdrop-filter: blur(16px) contrast(1.05);
  }

  .member-avatar {
    width: 58px;
    height: 58px;
  }

  .member-avatar svg {
    width: 26px;
    height: 26px;
  }

  .member-name {
    font-size: 15px;
  }

  .member-email {
    font-size: 11px;
    padding: 7px 11px;
  }

  .project-modal-footer {
    padding: 20px 24px 28px;
    backdrop-filter: blur(14px) contrast(1.05);
    -webkit-backdrop-filter: blur(14px) contrast(1.05);
    gap: 14px;
  }

  .project-modal-checkbox-text {
    font-size: 12px;
  }

  .project-modal-checkbox-custom {
    width: 18px;
    height: 18px;
  }

  .project-modal-checkbox-custom::after {
    left: 5.5px;
    top: 1.5px;
    width: 4.5px;
    height: 9px;
  }

  .project-modal-button {
    max-width: 100%;
    padding: 12px 28px;
    font-size: 14px;
  }
}

/* Small Mobile */
@media (max-width: 480px) {
  .project-modal {
    max-width: 96%;
    border-radius: 20px;
    backdrop-filter: blur(20px) saturate(130%) contrast(1.03);
    -webkit-backdrop-filter: blur(20px) saturate(130%) contrast(1.03);
  }

  .project-modal-overlay {
    backdrop-filter: blur(14px) saturate(150%) contrast(1.05);
    -webkit-backdrop-filter: blur(14px) saturate(150%) contrast(1.05);
  }

  .project-modal-header {
    padding: 24px 20px 18px;
    backdrop-filter: blur(14px) contrast(1.03);
    -webkit-backdrop-filter: blur(14px) contrast(1.03);
  }

  .project-modal-icon {
    width: 58px;
    height: 58px;
  }

  .project-modal-icon svg {
    width: 28px;
    height: 28px;
  }

  .project-modal-title {
    font-size: 22px;
  }

  .project-modal-subtitle {
    font-size: 11.5px;
  }

  .project-modal-body {
    padding: 20px 20px 24px;
    backdrop-filter: blur(20px) contrast(1.03);
    -webkit-backdrop-filter: blur(20px) contrast(1.03);
  }

  .project-academic-notice {
    padding: 14px 16px;
    backdrop-filter: blur(12px) contrast(1.03);
    -webkit-backdrop-filter: blur(12px) contrast(1.03);
  }

  .academic-badge {
    padding: 5px 12px;
    font-size: 11px;
  }

  .academic-badge svg {
    width: 14px;
    height: 14px;
  }

  .academic-notice-text {
    font-size: 12px;
  }

  .project-modal-description {
    font-size: 13px;
    margin-bottom: 20px;
  }

  .project-modal-team-title {
    font-size: 14px;
  }

  .project-modal-member-card {
    padding: 18px 14px;
    backdrop-filter: blur(14px) contrast(1.03);
    -webkit-backdrop-filter: blur(14px) contrast(1.03);
  }

  .member-avatar {
    width: 54px;
    height: 54px;
  }

  .member-avatar svg {
    width: 24px;
    height: 24px;
  }

  .member-name {
    font-size: 14px;
  }

  .member-email {
    font-size: 10.5px;
    padding: 6px 10px;
  }

  .project-modal-footer {
    padding: 18px 20px 24px;
    backdrop-filter: blur(12px) contrast(1.03);
    -webkit-backdrop-filter: blur(12px) contrast(1.03);
    gap: 12px;
  }

  .project-modal-checkbox-label {
    padding: 7px 14px;
  }

  .project-modal-checkbox-text {
    font-size: 11.5px;
  }

  .project-modal-checkbox-custom {
    width: 17px;
    height: 17px;
  }

  .project-modal-checkbox-custom::after {
    left: 5px;
    top: 1px;
    width: 4px;
    height: 8.5px;
  }

  .project-modal-button {
    padding: 11px 24px;
    font-size: 13.5px;
  }
}

/* Accessibility - Reduced Motion */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  .project-modal-icon {
    animation: none;
  }

  .project-modal-member-card {
    animation: none;
    opacity: 1;
  }

  .project-modal-button::after {
    display: none;
  }
}

/* Print Styles */
@media print {
  .project-modal-overlay {
    display: none;
  }
}