/* ==================================== */
/* GLOBAL LAYOUT                        */
/* ==================================== */
* {
  box-sizing: border-box;
}

body {
  margin: 0;
  padding: 0;
  height: 100vh;
  width: 100vw;
  display: flex;
  font-family: 'Segoe UI', -apple-system, BlinkMacSystemFont, sans-serif;
  background: var(--bg-main);
  overflow: hidden;
  color: var(--text-primary);
}

svg {
  user-select: none;
}

/* ==================================== */
/* COLLAPSIBLE SIDEBAR                  */
/* ==================================== */
.sidebar {
  width: var(--sidebar-width);
  min-width: var(--sidebar-width);
  max-width: var(--sidebar-width);
  background: var(--bg-sidebar);
  display: flex;
  flex-direction: column;
  padding: 12px;
  border-right: 1px solid var(--border-light);
  z-index: 100;
  flex-shrink: 0;
  overflow-y: auto;
  overflow-x: hidden;
  position: relative;
  transition: width var(--transition-normal), min-width var(--transition-normal), padding var(--transition-normal);
  box-sizing: border-box;
  touch-action: manipulation;
}

/* Force all fieldsets in sidebar to respect width constraints */
.sidebar fieldset {
  min-width: 0;
  max-width: 100%;
  box-sizing: border-box;
}

/* Collapsed state */
.sidebar.collapsed {
  width: var(--sidebar-collapsed);
  min-width: var(--sidebar-collapsed);
  max-width: var(--sidebar-collapsed);
  padding: 12px 8px;
}

.sidebar.collapsed .sidebar-header .logo-text,
.sidebar.collapsed .sidebar-footer,
.sidebar.collapsed .control-group label span,
.sidebar.collapsed .control-value,
.sidebar.collapsed .control-group select,
.sidebar.collapsed .control-group input[type="range"],
.sidebar.collapsed .toolbar-row,
.sidebar.collapsed .section-card,
.sidebar.collapsed .help-section {
  display: none;
}

.sidebar.collapsed .sidebar-header {
  justify-content: center;
}

.sidebar.collapsed .control-group {
  margin-bottom: 12px;
}

.sidebar.collapsed .control-group label {
  justify-content: center;
  margin-bottom: 0;
}

.sidebar.collapsed .btn-pill {
  width: 40px;
  height: 40px;
  padding: 0;
  justify-content: center;
}

/* Logo button */
.logo-button {
  width: 40px;
  height: 40px;
  padding: 0;
  border: none;
  background: var(--accent-primary);
  border-radius: var(--border-radius-md);
  color: white;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: all var(--transition-fast);
}

.logo-button:hover {
  background: var(--accent-primary-hover);
  transform: scale(1.02);
}

.logo-button .logo-icon {
  width: 28px;
  height: 28px;
  background: transparent;
  color: white;
}

/* Collapsed navigation */
.collapsed-nav {
  display: none;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  padding: 12px 0;
  border-bottom: 1px solid var(--border-light);
  margin-bottom: 12px;
}

.sidebar.collapsed .collapsed-nav {
  display: flex;
}

.nav-icon {
  width: 40px;
  height: 40px;
  padding: 0;
  border: none;
  background: transparent;
  border-radius: var(--border-radius-md);
  color: var(--text-secondary);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-fast);
}

.nav-icon:hover {
  background: var(--bg-sidebar-hover);
  color: var(--accent-primary);
}

.nav-icon svg {
  width: 22px;
  height: 22px;
}

/* ==================================== */
/* SIDEBAR HEADER                       */
/* ==================================== */
.sidebar-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 24px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--border-light);
}

.logo-icon {
  width: 36px;
  height: 36px;
  background: var(--accent-primary);
  border-radius: var(--border-radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  color: white;
  flex-shrink: 0;
}

.logo-text {
  flex: 1;
  text-align: center;
  font-size: 18px;
  font-weight: 600;
  color: var(--text-primary);
  letter-spacing: 0.3px;
}

.menu-button {
  height: 40px;
  width: 40px;
  padding: 0;
  border: none;
  border-radius: var(--border-radius-md);
  background: var(--accent-primary);
  color: white;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  cursor: pointer;
  transition: all var(--transition-fast);
  justify-content: center;
}

.menu-button:hover {
  background: var(--accent-primary-hover);
  transform: scale(1.02);
}

.menu-button .menu-icon {
  width: 16px;
  height: 16px;
}

.sidebar.collapsed .menu-button {
  display: none;
}

.menu-button-collapsed {
  background: transparent;
  color: var(--text-secondary);
}

.menu-button-collapsed:hover {
  background: var(--bg-sidebar-hover);
  color: var(--accent-primary);
}

/* ==================================== */
/* SIDEBAR FOOTER                       */
/* ==================================== */
.sidebar-footer {
  margin-top: auto;
  padding-top: 16px;
  border-top: 1px solid var(--border-light);
  font-size: 11px;
  color: var(--text-muted);
  text-align: center;
}

/* ==================================== */
/* MAIN AREA                            */
/* ==================================== */
.main-area {
  flex: 1;
  min-width: 0;
  background: var(--bg-main);
  height: 100vh;
  display: flex;
  flex-direction: column;
  padding: 0;
  box-sizing: border-box;
  overflow: hidden;
}

/* ==================================== */
/* RESPONSIVE - TABLET (768px)          */
/* ==================================== */
@media (max-width: 768px) {
  body {
    flex-direction: column;
  }

  .sidebar {
    width: 100%;
    min-width: 100%;
    max-height: 40vh;
    overflow-y: auto;
    border-right: none;
    border-bottom: 1px solid var(--border-light);
  }

  .sidebar.collapsed {
    max-height: 60px;
    overflow: hidden;
  }

  .main-area {
    padding: 12px;
    height: auto;
    flex: 1;
  }
}

/* ==================================== */
/* RESPONSIVE - MOBILE (480px)          */
/* ==================================== */
@media (max-width: 480px) {
  .sidebar {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    width: 100%;
    min-width: 100%;
    max-height: 50vh;
    z-index: 100;
    border-radius: 16px 16px 0 0;
    border-bottom: none;
    border-top: 1px solid var(--border-light);
    transform: translateY(calc(100% - 60px));
    transition: transform var(--transition-normal);
    box-shadow: 0 -4px 20px rgba(0, 0, 0, 0.1);
  }

  .sidebar.expanded {
    transform: translateY(0);
  }

  /* Mobile header */
  .sidebar-header {
    justify-content: center;
    gap: 8px;
    padding-bottom: 12px;
    margin-bottom: 12px;
  }

  /* Mobile collapsed nav - horizontal */
  .collapsed-nav {
    flex-direction: row;
    justify-content: center;
    padding: 8px 0;
    margin-bottom: 8px;
  }

  .sidebar:not(.expanded) .collapsed-nav {
    display: flex;
  }

  .sidebar.expanded .collapsed-nav {
    display: none;
  }

  /* Hide sections when not expanded */
  .sidebar:not(.expanded) .toolbar-row,
  .sidebar:not(.expanded) .section-card,
  .sidebar:not(.expanded) .help-section,
  .sidebar:not(.expanded) .sidebar-footer,
  .sidebar:not(.expanded) .logo-text {
    display: none;
  }

  /* Nav icon smaller on mobile */
  .nav-icon {
    width: 36px;
    height: 36px;
  }

  .nav-icon svg {
    width: 20px;
    height: 20px;
  }

  .main-area {
    padding: 12px;
    padding-bottom: 70px;
    height: 100vh;
  }
}