/**
 * components.css - 网格、卡片、按钮、标签
 * NEGIAO.github.io 模块化 CSS
 */

/* ========================
   Grid System
   ======================== */
.grid {
  display: grid;
  gap: var(--space-xl);
  width: 100%;
}

.grid--auto-fit {
  grid-template-columns: repeat(auto-fit, minmax(min(320px, 100%), 1fr));
}

.grid--2 {
  grid-template-columns: repeat(auto-fit, minmax(min(350px, 100%), 1fr));
}

.grid--3 {
  grid-template-columns: repeat(auto-fit, minmax(min(300px, 100%), 1fr));
}

.grid--3-fixed {
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-xl);
}

.grid--responsive {
  grid-template-columns: repeat(auto-fit, minmax(min(280px, 100%), 1fr));
}

/* ========================
   Cards with Glass Morphism
   ======================== */
.card {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-xl);
  padding: var(--space-2xl);
  transition: all var(--transition-normal);
  position: relative;
  overflow: hidden;
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  will-change: transform, box-shadow, border-color;
  transform: translateZ(0);
  box-shadow: var(--shadow-md);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
}

.card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--gradient-primary);
  opacity: 0;
  transition: opacity var(--transition-normal);
}

.card:hover {
  border-color: rgba(0, 217, 255, 0.4);
  transform: translateY(-8px) translateZ(0);
  box-shadow:
    var(--shadow-xl),
    0 0 30px rgba(0, 217, 255, 0.15);
}

.card:hover::before {
  opacity: 1;
}

.card--featured {
  background: linear-gradient(145deg,
      rgba(0, 217, 255, 0.1) 0%,
      rgba(26, 31, 46, 0.9) 50%,
      rgba(255, 107, 107, 0.1) 100%);
  border: 1px solid rgba(0, 217, 255, 0.3);
  position: relative;
}

.card--featured::after {
  content: '';
  position: absolute;
  top: -2px;
  left: -2px;
  right: -2px;
  bottom: -2px;
  background: var(--gradient-primary);
  border-radius: var(--radius-xl);
  z-index: -1;
  opacity: 0.1;
}

/* ========================
   Note Card (Index Page)
   ======================== */
.note-card {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-xl);
  padding: var(--space-xl);
  transition: all var(--transition-normal);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  position: relative;
  overflow: hidden;
}

.note-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--gradient-primary);
  opacity: 0;
  transition: opacity var(--transition-normal);
}

.note-card:hover {
  transform: translateY(-8px);
  border-color: rgba(0, 217, 255, 0.4);
  box-shadow: var(--shadow-xl), 0 0 30px rgba(0, 217, 255, 0.15);
}

.note-card:hover::before {
  opacity: 1;
}

/* ========================
   Buttons
   ======================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  padding: var(--space-md) var(--space-xl);
  border: none;
  border-radius: var(--radius-lg);
  font-family: inherit;
  font-size: 0.875rem;
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
  transition: all var(--transition-normal);
  white-space: nowrap;
  will-change: transform;
  transform: translateZ(0);
  position: relative;
  overflow: hidden;
  min-height: 44px;
}

.btn::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 var(--transition-slow);
}

.btn:hover::before {
  left: 100%;
}

.btn--primary {
  background: linear-gradient(135deg,
    color-mix(in srgb, var(--primary) 14%, transparent) 0%,
    color-mix(in srgb, var(--primary) 8%, transparent) 100%);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  color: var(--primary);
  box-shadow:
    0 0 0 1px color-mix(in srgb, var(--primary) 28%, var(--glass-border)),
    0 4px 18px color-mix(in srgb, var(--primary) 12%, transparent),
    inset 0 1px 0 rgba(255, 255, 255, 0.08);
  text-shadow: 0 0 18px color-mix(in srgb, var(--primary) 35%, transparent);
}

.btn--primary:hover {
  transform: translateY(-2px);
  background: linear-gradient(135deg,
    color-mix(in srgb, var(--primary) 22%, transparent) 0%,
    color-mix(in srgb, var(--primary) 14%, transparent) 100%);
  box-shadow:
    0 0 0 1px color-mix(in srgb, var(--primary) 42%, var(--glass-border)),
    0 8px 28px color-mix(in srgb, var(--primary) 20%, transparent),
    inset 0 1px 0 rgba(255, 255, 255, 0.12);
  color: var(--primary-light);
  text-decoration: none;
  text-shadow: 0 0 22px color-mix(in srgb, var(--primary) 50%, transparent);
}

.btn--primary:active {
  transform: translateY(0) scale(0.98);
}

.btn--secondary {
  background: var(--glass-bg);
  color: var(--text);
  border: 2.5px solid var(--glass-border);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

.btn--secondary:hover {
  background: var(--surface-elevated);
  border-color: var(--primary);
  color: var(--text);
  text-decoration: none;
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

.btn--outline {
  background: color-mix(in srgb, var(--surface-elevated) 58%, transparent);
  color: var(--text-secondary);
  border: 1px solid color-mix(in srgb, var(--primary) 22%, var(--glass-border));
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
}

.btn--outline:hover {
  background: color-mix(in srgb, var(--primary) 12%, var(--surface-elevated));
  color: var(--primary);
  border-color: color-mix(in srgb, var(--primary) 48%, var(--glass-border));
  text-decoration: none;
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(0, 217, 255, 0.12);
}

.btn--outline:active {
  transform: scale(0.97);
}

.btn--accent {
  background: var(--gradient-accent);
  color: white;
  box-shadow: var(--shadow-md);
}

.btn--accent:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg), var(--shadow-glow-accent);
  color: white;
  text-decoration: none;
}

.btn--small {
  padding: var(--space-sm) var(--space-lg);
  font-size: 0.8rem;
  min-height: 36px;
}

.btn--large {
  padding: var(--space-lg) var(--space-2xl);
  font-size: 1rem;
  min-height: 52px;
  font-weight: 700;
  letter-spacing: 0.02em;
  border-radius: var(--radius-xl);
}

/* ========================
   Tags
   ======================== */
.tag {
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--text-secondary);
  padding: 4px 12px;
  background: rgba(255, 255, 255, 0.03);
  border-radius: var(--radius-full);
  border: 1px solid rgba(255, 255, 255, 0.156);
  backdrop-filter: blur(5px);
  -webkit-backdrop-filter: blur(5px);
  transition: all var(--transition-normal);
  display: inline-flex;
  align-items: center;
}

.tag:hover {
  background: rgba(0, 217, 255, 0.1);
  border-color: rgba(0, 217, 255, 0.3);
  color: var(--primary);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0, 217, 255, 0.1);
}

/* ========================
   Tech Badges
   ======================== */
.tech-badge {
  background: rgba(0, 217, 255, 0.1);
  border: 1px solid rgba(0, 217, 255, 0.3);
  padding: var(--space-sm) var(--space-lg);
  border-radius: var(--radius-full);
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--primary);
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  transition: all var(--transition-normal);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  white-space: nowrap;
  position: relative;
  overflow: hidden;
}

.tech-badge::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(0, 217, 255, 0.2), transparent);
  transition: left var(--transition-slow);
}

.tech-badge:hover {
  background: rgba(0, 217, 255, 0.2);
  border-color: var(--primary);
  transform: translateY(-2px) scale(1.05);
  box-shadow: var(--shadow-md), 0 0 15px rgba(0, 217, 255, 0.3);
}

.tech-badge:hover::before {
  left: 100%;
}

.tech-badge--accent {
  background: rgba(255, 107, 107, 0.1);
  border-color: rgba(255, 107, 107, 0.3);
  color: var(--accent);
}

.tech-badge--accent:hover {
  background: rgba(255, 107, 107, 0.2);
  border-color: var(--accent);
  box-shadow: var(--shadow-md), 0 0 15px rgba(255, 107, 107, 0.3);
}

.tech-badge--success {
  background: rgba(81, 207, 102, 0.1);
  border-color: rgba(81, 207, 102, 0.3);
  color: var(--success);
}

.tech-badge--success:hover {
  background: rgba(81, 207, 102, 0.2);
  border-color: var(--success);
  box-shadow: var(--shadow-md), 0 0 15px rgba(81, 207, 102, 0.3);
}

/* ========================
   Loading States
   ======================== */
.loading {
  position: relative;
  overflow: hidden;
}

.loading::after {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.1), transparent);
  animation: loading 1.5s infinite;
}

@keyframes loading {
  0% { left: -100%; }
  100% { left: 100%; }
}

/* ========================
   Focus States
   ======================== */
.focus-ring {
  transition: box-shadow var(--transition-fast);
}

.focus-ring:focus {
  outline: none;
  box-shadow:
    0 0 0 2px var(--background),
    0 0 0 4px var(--primary);
}

/* ========================
   Light Theme Overrides
   ======================== */
body[data-theme='light'] .card {
  background: #FFFFFF;
  border: 1px solid rgba(0, 0, 0, 0.1);
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.04), 0 1px 2px rgba(0, 0, 0, 0.06);
}

body[data-theme='light'] .card:hover {
  border-color: rgba(37, 99, 235, 0.4);
  box-shadow: 0 12px 28px rgba(0, 0, 0, 0.1), 0 0 0 1px rgba(37, 99, 235, 0.15);
  transform: translateY(-4px);
}

body[data-theme='light'] .card::before {
  background: var(--gradient-primary);
  height: 3px;
}

body[data-theme='light'] .btn--primary {
  background: linear-gradient(135deg,
    color-mix(in srgb, var(--primary) 10%, transparent) 0%,
    color-mix(in srgb, var(--primary) 5%, transparent) 100%);
  box-shadow:
    0 0 0 1px color-mix(in srgb, var(--primary) 22%, var(--glass-border)),
    0 4px 14px rgba(37, 99, 235, 0.08),
    inset 0 1px 0 rgba(255, 255, 255, 0.5);
  color: var(--primary);
}

body[data-theme='light'] .btn--primary:hover {
  background: linear-gradient(135deg,
    color-mix(in srgb, var(--primary) 18%, transparent) 0%,
    color-mix(in srgb, var(--primary) 10%, transparent) 100%);
  box-shadow:
    0 0 0 1px color-mix(in srgb, var(--primary) 38%, var(--glass-border)),
    0 8px 22px rgba(37, 99, 235, 0.14),
    inset 0 1px 0 rgba(255, 255, 255, 0.6);
  color: var(--primary);
}

body[data-theme='light'] .btn--outline {
  background: color-mix(in srgb, #ffffff 72%, transparent);
  border-color: color-mix(in srgb, var(--primary) 28%, rgba(15, 23, 42, 0.12));
  color: var(--text);
  box-shadow: 0 2px 8px rgba(15, 23, 42, 0.06);
}

body[data-theme='light'] .btn--outline:hover {
  background: color-mix(in srgb, var(--primary) 10%, #ffffff);
  color: var(--primary);
  border-color: color-mix(in srgb, var(--primary) 50%, transparent);
  box-shadow: 0 6px 16px rgba(37, 99, 235, 0.12);
}

body[data-theme='light'] .tag {
  background: rgba(0, 0, 0, 0.04);
  border: 1px solid rgba(0, 0, 0, 0.1);
}

body[data-theme='light'] .tag:hover {
  background: rgba(37, 99, 235, 0.1);
  border-color: rgba(37, 99, 235, 0.35);
  box-shadow: 0 2px 8px rgba(37, 99, 235, 0.12);
}

body[data-theme='light'] .tech-badge {
  background: rgba(37, 99, 235, 0.1);
  border: 1px solid rgba(37, 99, 235, 0.25);
  color: var(--primary);
}

body[data-theme='light'] .tech-badge:hover {
  background: rgba(37, 99, 235, 0.15);
  box-shadow: 0 4px 12px rgba(37, 99, 235, 0.2);
}

body[data-theme='light'] .tech-badge--accent {
  background: rgba(239, 68, 68, 0.1);
  border-color: rgba(239, 68, 68, 0.25);
  color: var(--accent);
}

body[data-theme='light'] .tech-badge--success {
  background: rgba(22, 163, 74, 0.1);
  border-color: rgba(22, 163, 74, 0.25);
  color: var(--success);
}

body[data-theme='light'] .loading::after {
  background: linear-gradient(90deg, transparent, rgba(0, 0, 0, 0.06), transparent);
}