/* ===== KAPIBARA-NET Main Styles ===== */
@import url('https://fonts.googleapis.com/css2?family=Nunito:wght@400;500;600;700;800;900&family=M+PLUS+Rounded+1c:wght@400;500;700;800&display=swap');

:root {
  --primary: #6C63FF;
  --primary-dark: #574fd6;
  --primary-light: #a89dff;
  --secondary: #FF6584;
  --accent: #43D9AD;
  --accent2: #FFB347;
  --bg-dark: #0f0f1a;
  --bg-card: #1a1a2e;
  --bg-surface: #16213e;
  --bg-hover: #1f2b4a;
  --text-primary: #e8e8f0;
  --text-secondary: #9090b0;
  --text-muted: #5a5a7a;
  --border: #2a2a4a;
  --online: #43D9AD;
  --offline: #5a5a7a;
  --danger: #FF4757;
  --warning: #FFB347;
  --success: #43D9AD;
  --sidebar-width: 260px;
  --topbar-height: 60px;
  --radius: 12px;
  --radius-sm: 8px;
  --radius-lg: 20px;
  --shadow: 0 4px 24px rgba(0,0,0,0.4);
  --glow: 0 0 20px rgba(108,99,255,0.3);
}

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

html, body {
  height: 100%;
  overflow: hidden;
}

body {
  font-family: 'Nunito', 'M PLUS Rounded 1c', sans-serif;
  background: var(--bg-dark);
  color: var(--text-primary);
  line-height: 1.6;
}

/* ===== Scrollbar ===== */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--primary); }

/* ===== Layout ===== */
.app-layout {
  display: flex;
  height: 100vh;
  overflow: hidden;
}

/* ===== Sidebar ===== */
.sidebar {
  width: var(--sidebar-width);
  background: var(--bg-card);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  height: 100vh;
  position: relative;
  z-index: 100;
  flex-shrink: 0;
  transition: transform 0.3s ease;
}

.sidebar-logo {
  padding: 20px 16px 16px;
  border-bottom: 1px solid var(--border);
}

.sidebar-logo .logo-text {
  font-size: 18px;
  font-weight: 900;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  letter-spacing: -0.5px;
}

.sidebar-logo .logo-sub {
  font-size: 10px;
  color: var(--text-muted);
  letter-spacing: 2px;
  text-transform: uppercase;
  margin-top: 2px;
}

/* Network Status */
.network-status {
  margin: 12px 16px;
  padding: 10px 14px;
  background: rgba(67, 217, 173, 0.1);
  border: 1px solid rgba(67, 217, 173, 0.3);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  color: var(--accent);
}

.network-status .status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 8px var(--accent);
  animation: pulse 2s infinite;
  flex-shrink: 0;
}

.network-status.offline {
  background: rgba(90, 90, 122, 0.1);
  border-color: rgba(90, 90, 122, 0.3);
  color: var(--offline);
}

.network-status.offline .status-dot {
  background: var(--offline);
  box-shadow: none;
  animation: none;
}

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.6; transform: scale(0.8); }
}

/* Sidebar Nav */
.sidebar-nav {
  flex: 1;
  overflow-y: auto;
  padding: 8px 0;
}

.nav-section {
  padding: 8px 16px 4px;
  font-size: 10px;
  font-weight: 700;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 1.5px;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 16px;
  cursor: pointer;
  border-radius: var(--radius-sm);
  margin: 2px 8px;
  transition: all 0.2s;
  text-decoration: none;
  color: var(--text-secondary);
  font-size: 14px;
  font-weight: 600;
  position: relative;
}

.nav-item:hover {
  background: var(--bg-hover);
  color: var(--text-primary);
}

.nav-item.active {
  background: rgba(108, 99, 255, 0.15);
  color: var(--primary-light);
  box-shadow: inset 3px 0 0 var(--primary);
}

.nav-item .nav-icon {
  font-size: 18px;
  width: 24px;
  text-align: center;
  flex-shrink: 0;
}

.nav-badge {
  margin-left: auto;
  background: var(--secondary);
  color: white;
  font-size: 10px;
  font-weight: 700;
  padding: 2px 6px;
  border-radius: 10px;
  min-width: 18px;
  text-align: center;
}

/* Sidebar User */
.sidebar-user {
  padding: 12px 16px;
  border-top: 1px solid var(--border);
  display: flex;
  align-items: center;
  gap: 10px;
  cursor: pointer;
  transition: background 0.2s;
}

.sidebar-user:hover { background: var(--bg-hover); }

.user-avatar {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  font-weight: 700;
  color: white;
  flex-shrink: 0;
  position: relative;
  overflow: hidden;
}

.user-avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 50%;
}

.user-avatar .online-dot {
  position: absolute;
  bottom: 1px;
  right: 1px;
  width: 10px;
  height: 10px;
  background: var(--online);
  border: 2px solid var(--bg-card);
  border-radius: 50%;
}

.user-info {
  flex: 1;
  min-width: 0;
}

.user-name {
  font-size: 13px;
  font-weight: 700;
  color: var(--text-primary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.user-role {
  font-size: 11px;
  color: var(--text-muted);
}

/* ===== Main Content ===== */
.main-content {
  flex: 1;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  position: relative;
  min-height: 0;
  min-width: 0;
}

/* Topbar */
.topbar {
  height: var(--topbar-height);
  background: var(--bg-card);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  padding: 0 20px;
  gap: 16px;
  flex-shrink: 0;
  z-index: 50;
}

.topbar-title {
  font-size: 16px;
  font-weight: 800;
  color: var(--text-primary);
}

.topbar-actions {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 12px;
}

/* Page Container */
.page {
  display: none;
  flex: 1;
  overflow: hidden;
  min-height: 0;   /* flex子要素が縮めるようにする */
}

.page.active {
  display: flex;
  flex-direction: column;
  height: 100%;    /* 親の高さを確実に継承 */
}

.page-content {
  flex: 1;
  overflow-y: auto;
  padding: 24px;
  min-height: 0;
}

/* ===== Cards ===== */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
}

.card-title {
  font-size: 14px;
  font-weight: 700;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 16px;
}

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 8px 18px;
  border-radius: var(--radius-sm);
  border: none;
  cursor: pointer;
  font-family: inherit;
  font-size: 13px;
  font-weight: 700;
  transition: all 0.2s;
  text-decoration: none;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: white;
  box-shadow: 0 4px 12px rgba(108,99,255,0.3);
}

.btn-primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(108,99,255,0.4);
}

.btn-secondary {
  background: var(--bg-surface);
  color: var(--text-primary);
  border: 1px solid var(--border);
}

.btn-secondary:hover { background: var(--bg-hover); }

.btn-danger {
  background: var(--danger);
  color: white;
}

.btn-danger:hover { background: #ff2d3f; }

.btn-accent {
  background: linear-gradient(135deg, var(--accent), #2fb88e);
  color: white;
}

.btn-sm { padding: 5px 12px; font-size: 12px; }
.btn-lg { padding: 12px 28px; font-size: 15px; }
.btn-icon {
  padding: 8px;
  background: transparent;
  border: none;
  color: var(--text-secondary);
  cursor: pointer;
  border-radius: var(--radius-sm);
  font-size: 18px;
  transition: all 0.2s;
  display: flex;
  align-items: center;
  justify-content: center;
}
.btn-icon:hover { background: var(--bg-hover); color: var(--text-primary); }

/* ===== Inputs ===== */
.input {
  width: 100%;
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 10px 14px;
  color: var(--text-primary);
  font-family: inherit;
  font-size: 14px;
  outline: none;
  transition: border-color 0.2s;
}

.input:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(108,99,255,0.1);
}

.input::placeholder { color: var(--text-muted); }

/* ===== Avatar Sizes ===== */
.avatar-sm { width: 28px; height: 28px; font-size: 12px; }
.avatar-md { width: 40px; height: 40px; font-size: 17px; }
.avatar-lg { width: 56px; height: 56px; font-size: 22px; }
.avatar-xl { width: 80px; height: 80px; font-size: 32px; }

/* ===== Toast ===== */
.toast-container {
  position: fixed;
  top: 20px;
  right: 20px;
  z-index: 9999;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.toast {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 12px 16px;
  font-size: 13px;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 10px;
  min-width: 240px;
  max-width: 320px;
  box-shadow: var(--shadow);
  animation: slideInRight 0.3s ease;
}

.toast.success { border-left: 3px solid var(--success); }
.toast.error { border-left: 3px solid var(--danger); }
.toast.info { border-left: 3px solid var(--primary); }
.toast.warning { border-left: 3px solid var(--warning); }

@keyframes slideInRight {
  from { transform: translateX(100%); opacity: 0; }
  to { transform: translateX(0); opacity: 1; }
}

@keyframes slideOutRight {
  from { transform: translateX(0); opacity: 1; }
  to { transform: translateX(100%); opacity: 0; }
}

/* ===== Modal ===== */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.7);
  backdrop-filter: blur(8px);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  animation: fadeIn 0.2s ease;
}

.modal {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px;
  width: 100%;
  max-width: 480px;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: var(--shadow);
  animation: scaleIn 0.2s ease;
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
}

.modal-title {
  font-size: 18px;
  font-weight: 800;
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes scaleIn {
  from { transform: scale(0.95); opacity: 0; }
  to { transform: scale(1); opacity: 1; }
}

/* ===== Badge ===== */
.badge {
  display: inline-flex;
  align-items: center;
  padding: 2px 8px;
  border-radius: 10px;
  font-size: 11px;
  font-weight: 700;
}

.badge-admin {
  background: rgba(255, 183, 71, 0.2);
  color: var(--warning);
  border: 1px solid rgba(255,183,71,0.3);
}

.badge-user {
  background: rgba(108,99,255,0.2);
  color: var(--primary-light);
  border: 1px solid rgba(108,99,255,0.3);
}

/* ===== Loading ===== */
.loading-spinner {
  width: 40px;
  height: 40px;
  border: 3px solid var(--border);
  border-top: 3px solid var(--primary);
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* ===== Divider ===== */
.divider {
  height: 1px;
  background: var(--border);
  margin: 16px 0;
}

/* ===== Empty State ===== */
.empty-state {
  text-align: center;
  padding: 48px 24px;
  color: var(--text-muted);
}

.empty-state .empty-icon {
  font-size: 48px;
  margin-bottom: 12px;
  display: block;
}

.empty-state p {
  font-size: 14px;
}

/* ===== Hamburger (mobile) ===== */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 4px;
  cursor: pointer;
  padding: 4px;
}

.hamburger span {
  width: 22px;
  height: 2px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: all 0.3s;
}

/* ===== Responsive ===== */
@media (max-width: 768px) {
  .sidebar {
    position: fixed;
    left: 0;
    top: 0;
    transform: translateX(-100%);
    z-index: 200;
  }
  
  .sidebar.open {
    transform: translateX(0);
  }
  
  .sidebar-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.5);
    z-index: 199;
  }
  
  .sidebar-overlay.open {
    display: block;
  }
  
  .hamburger {
    display: flex;
  }
  
  .page-content {
    padding: 16px;
  }
}

/* ===== Gradient Text ===== */
.gradient-text {
  background: linear-gradient(135deg, var(--primary), var(--accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ===== Glow Effects ===== */
.glow-primary { box-shadow: 0 0 20px rgba(108,99,255,0.3); }
.glow-accent { box-shadow: 0 0 20px rgba(67,217,173,0.3); }

/* ===== Grid Layouts ===== */
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }

@media (max-width: 1024px) {
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 640px) {
  .grid-4, .grid-3, .grid-2 { grid-template-columns: 1fr; }
}

/* ===== Animations ===== */
.fade-in {
  animation: fadeIn 0.3s ease;
}

.slide-up {
  animation: slideUp 0.3s ease;
}

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