/* Layout Components - Header, Sidebar, Footer, Background */
/* mtgproxy Design System */

/* ===== HEADER ===== */
.app-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 60px;
  background: var(--bg-primary);
  border-bottom: 1px solid var(--border-primary);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 var(--spacing-lg);
  z-index: 100;
  box-shadow: var(--shadow-md);
}

.hamburger-btn,
.help-btn {
  background: none;
  border: none;
  color: var(--text-primary);
  cursor: pointer;
  padding: var(--spacing-sm);
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
}

.hamburger-btn:hover,
.help-btn:hover {
  background: var(--bg-hover);
}

.hamburger-btn svg,
.help-btn svg {
  width: 24px;
  height: 24px;
}

.app-title {
  font-size: 20px;
  font-weight: 700;
  color: var(--text-primary);
  margin: 0;
  letter-spacing: -0.01em;
}

/* ===== SIDEBAR ===== */
.sidebar {
  position: fixed;
  top: 0;
  left: -280px;
  width: 280px;
  height: 100vh;
  background: var(--bg-primary);
  border-right: 1px solid var(--border-primary);
  z-index: 200;
  transition: left var(--transition-base);
  overflow-y: auto;
  box-shadow: var(--shadow-xl);
}

.sidebar.open {
  left: 0;
}

.sidebar-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--spacing-lg);
  border-bottom: 1px solid var(--border-primary);
}

.sidebar-header h2 {
  font-size: 18px;
  font-weight: 600;
  color: var(--text-primary);
  margin: 0;
}

.sidebar-close {
  background: none;
  border: none;
  color: var(--text-primary);
  cursor: pointer;
  padding: var(--spacing-sm);
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
}

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

.sidebar-close svg {
  width: 20px;
  height: 20px;
}

.sidebar-nav {
  padding: var(--spacing-lg);
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.sidebar-item {
  width: 100%;
  padding: var(--spacing-md) var(--spacing-lg);
  background: var(--bg-surface);
  border: 1px solid var(--border-secondary);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-size: 14px;
  font-weight: 500;
  text-align: left;
  cursor: pointer;
  transition: all var(--transition-base);
}

.sidebar-item:hover {
  background: var(--bg-hover);
  border-color: var(--border-hover);
  transform: translateX(2px);
}

.sidebar-theme-toggle {
  margin-top: var(--spacing-lg);
  display: flex;
  gap: var(--spacing-md);
}

.theme-btn {
  flex: 1;
  padding: var(--spacing-md);
  border: 1px solid var(--border-secondary);
  border-radius: var(--radius-md);
  background: var(--bg-surface);
  color: var(--text-primary);
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition-base);
}

.theme-btn:hover {
  background: var(--bg-hover);
  border-color: var(--border-hover);
}

.theme-btn.active {
  background: var(--accent-primary);
  border-color: var(--accent-primary);
  color: white;
}

.sidebar-backdrop {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.8);
  backdrop-filter: blur(8px);
  z-index: 150;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-base);
}

.sidebar-backdrop.active {
  opacity: 1;
  pointer-events: auto;
}

/* ===== MOBILE SETTINGS BUTTON ===== */
.mobile-settings-btn {
  display: none;
  position: fixed;
  bottom: var(--spacing-lg);
  left: var(--spacing-lg);
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: var(--accent-primary);
  border: none;
  color: white;
  cursor: pointer;
  box-shadow: 0 4px 12px rgba(124, 58, 237, 0.4);
  z-index: 90;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-base);
}

.mobile-settings-btn:hover {
  transform: scale(1.05);
  box-shadow: 0 6px 16px rgba(124, 58, 237, 0.6);
  background: var(--accent-hover);
}

.mobile-settings-btn:active {
  transform: scale(0.95);
}

.mobile-settings-btn svg {
  width: 24px;
  height: 24px;
}

/* ===== COMMANDER BACKGROUND ===== */
.commander-background {
  position: fixed;
  top: 60px;
  left: 0;
  right: 0;
  bottom: 40px;
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  opacity: 0;
  transition: opacity var(--transition-slow);
  z-index: 1;
  pointer-events: none;
}

.commander-background::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(135deg,
    rgba(26, 27, 38, 0.88) 0%,
    rgba(36, 40, 59, 0.88) 100%
  );
  backdrop-filter: blur(10px);
}

.commander-background.active {
  opacity: 1;
}

/* ===== FOOTER ===== */
.app-footer {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  height: 40px;
  background: var(--bg-primary);
  border-top: 1px solid var(--border-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-md);
  z-index: 100;
  box-shadow: 0 -2px 8px rgba(0, 0, 0, 0.2);
  font-size: 12px;
  color: var(--text-tertiary);
}

.app-footer a {
  color: var(--accent-primary);
  text-decoration: none;
  transition: color var(--transition-fast);
  font-weight: 500;
}

.app-footer a:hover {
  color: var(--accent-secondary);
}

/* ===== RESPONSIVE ===== */
@media (max-width: 768px) {
  /* Hide header on mobile */
  .app-header {
    display: none;
  }

  /* Show mobile settings button */
  .mobile-settings-btn {
    display: flex;
  }

  /* Hide footer on mobile */
  .app-footer {
    display: none;
  }

  /* Adjust commander background for mobile */
  .commander-background {
    top: 0;
    bottom: 0;
  }

  /* Sidebar adjustments for mobile */
  .sidebar {
    width: 85%;
    max-width: 320px;
    left: -100%;
  }

  .sidebar.open {
    left: 0;
  }
}

@media (min-width: 769px) {
  /* Hide mobile settings button on desktop */
  .mobile-settings-btn {
    display: none !important;
  }
}