/* ==========================================================================
   1:1 Pixel-Perfect Google Gemini (gemini.google.com) Material Design 3 Styles
   Supports Dark Mode (#131314) & Light Mode (#ffffff) + Custom Brand Logo
   ========================================================================== */

:root,
[data-theme="dark"] {
  --gm-bg-main: #131314;
  --gm-bg-sidebar: #1e1f20;
  --gm-bg-surface: #1e1f20;
  --gm-bg-surface-hover: #282a2c;
  --gm-bg-card: #1e1f20;
  --gm-bg-card-hover: #2b2d30;
  --gm-bg-user-bubble: #282a2c;
  --gm-bg-code: #1a1b1c;
  --gm-bg-code-header: #26282a;
  --gm-bg-modal: #1e1f20;
  --gm-text-primary: #e3e3e3;
  --gm-text-secondary: #c4c7c5;
  --gm-text-muted: #8e918f;
  --gm-border: #333537;
  --gm-border-subtle: rgba(255, 255, 255, 0.08);
  --gm-accent: #a8c7fa;
  --gm-accent-bg: rgba(168, 199, 250, 0.14);
  --gm-active-nav: #004a77;
  --gm-active-nav-text: #c2e7ff;
  --gm-danger: #f28b82;
  --gm-success: #81c995;
  --gm-warning: #fdd663;
  --gm-shadow: 0 8px 28px rgba(0, 0, 0, 0.45);
}

[data-theme="light"] {
  --gm-bg-main: #ffffff;
  --gm-bg-sidebar: #f0f4f9;
  --gm-bg-surface: #f0f4f9;
  --gm-bg-surface-hover: #e1e6ed;
  --gm-bg-card: #f0f4f9;
  --gm-bg-card-hover: #dfe5ec;
  --gm-bg-user-bubble: #f0f4f9;
  --gm-bg-code: #f4f6f8;
  --gm-bg-code-header: #e4e8ee;
  --gm-bg-modal: #ffffff;
  --gm-text-primary: #1f1f1f;
  --gm-text-secondary: #444746;
  --gm-text-muted: #747775;
  --gm-border: #dadce0;
  --gm-border-subtle: rgba(0, 0, 0, 0.08);
  --gm-accent: #0b57d0;
  --gm-accent-bg: rgba(11, 87, 208, 0.1);
  --gm-active-nav: #d3e3fd;
  --gm-active-nav-text: #041e49;
  --gm-danger: #d93025;
  --gm-success: #188038;
  --gm-warning: #e37400;
  --gm-shadow: 0 8px 24px rgba(0, 0, 0, 0.12);
}

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

html,
body {
  height: 100%;
  width: 100%;
  overflow: hidden;
  background-color: var(--gm-bg-main);
  color: var(--gm-text-primary);
  font-family: "Google Sans", "PingFang SC", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  -webkit-font-smoothing: antialiased;
  transition: background-color 0.2s ease, color 0.2s ease;
}

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

/* ==================== Left Sidebar (1:1 Gemini Sidenav) ==================== */
.gm-sidebar {
  width: 280px;
  min-width: 280px;
  background-color: var(--gm-bg-sidebar);
  display: flex;
  flex-direction: column;
  padding: 12px 12px 16px;
  transition: width 0.25s cubic-bezier(0.2, 0, 0, 1), min-width 0.25s cubic-bezier(0.2, 0, 0, 1), transform 0.25s ease;
  z-index: 20;
  user-select: none;
}

.gm-sidebar.collapsed {
  width: 68px;
  min-width: 68px;
}

.gm-sidebar.collapsed .gm-hide-on-collapse {
  display: none !important;
}

.gm-sidebar-top {
  display: flex;
  align-items: center;
  height: 48px;
  padding-left: 4px;
  margin-bottom: 14px;
}

.gm-icon-btn {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  border: none;
  background: transparent;
  color: var(--gm-text-secondary);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: background-color 0.15s ease;
}

.gm-icon-btn:hover {
  background-color: var(--gm-bg-surface-hover);
  color: var(--gm-text-primary);
}

.gm-new-chat-btn {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  height: 44px;
  padding: 0 16px;
  border-radius: 999px;
  border: none;
  background-color: var(--gm-bg-surface-hover);
  color: var(--gm-text-secondary);
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.15s ease;
  width: fit-content;
  margin-bottom: 20px;
}

.gm-sidebar.collapsed .gm-new-chat-btn {
  padding: 0;
  width: 40px;
  height: 40px;
  justify-content: center;
  margin-left: 2px;
}

.gm-new-chat-btn:hover {
  background-color: var(--gm-bg-card-hover);
  color: var(--gm-text-primary);
}

.gm-nav-section-title {
  font-size: 12px;
  font-weight: 500;
  color: var(--gm-text-secondary);
  padding: 6px 14px;
  margin-bottom: 4px;
}

.gm-conv-list {
  flex: 1;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 2px;
  padding-right: 4px;
}

.gm-conv-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 9px 14px;
  border-radius: 999px;
  color: var(--gm-text-secondary);
  font-size: 14px;
  cursor: pointer;
  transition: background-color 0.12s ease;
}

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

.gm-conv-item.active {
  background-color: var(--gm-active-nav);
  color: var(--gm-active-nav-text);
  font-weight: 500;
}

.gm-conv-title {
  flex: 1;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.gm-conv-del {
  opacity: 0;
  background: transparent;
  border: none;
  color: inherit;
  cursor: pointer;
  padding: 2px 4px;
  border-radius: 50%;
  font-size: 13px;
}

.gm-conv-item:hover .gm-conv-del {
  opacity: 0.75;
}

.gm-conv-del:hover {
  opacity: 1 !important;
  color: var(--gm-danger);
}

.gm-sidebar-footer {
  margin-top: auto;
  padding-top: 10px;
  border-top: 1px solid var(--gm-border-subtle);
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.gm-footer-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 9px 14px;
  border-radius: 999px;
  font-size: 13.5px;
  color: var(--gm-text-secondary);
  cursor: pointer;
  border: none;
  background: transparent;
  text-align: left;
  width: 100%;
}

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

.gm-location-dot {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 14px 2px;
  font-size: 11.5px;
  color: var(--gm-text-muted);
}

.gm-dot-online {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background-color: var(--gm-success);
  display: inline-block;
}

/* ==================== Main Content Area ==================== */
.gm-main {
  flex: 1;
  display: flex;
  flex-direction: column;
  height: 100vh;
  position: relative;
  overflow: hidden;
  background-color: var(--gm-bg-main);
}

/* Top Header Bar (1:1 Gemini Header) */
.gm-topbar {
  height: 64px;
  padding: 0 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-shrink: 0;
  z-index: 10;
}

.gm-brand-selector {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 6px 12px;
  border-radius: 12px;
  cursor: pointer;
  transition: background-color 0.15s ease;
  position: relative;
}

.gm-brand-selector:hover {
  background-color: var(--gm-bg-surface);
}

.gm-brand-logo-wrap {
  width: 26px;
  height: 26px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.gm-brand-logo-img {
  width: 24px;
  height: 24px;
  object-fit: contain;
  border-radius: 6px;
}

.gm-brand-title {
  font-size: 19px;
  font-weight: 500;
  color: var(--gm-text-primary);
  letter-spacing: -0.2px;
}

.gm-model-badge {
  font-size: 12px;
  padding: 2px 8px;
  border-radius: 999px;
  background-color: var(--gm-bg-surface);
  color: var(--gm-text-secondary);
  font-weight: 500;
}

.gm-model-dropdown {
  position: absolute;
  top: 50px;
  left: 0;
  width: 290px;
  background-color: var(--gm-bg-modal);
  border: 1px solid var(--gm-border);
  border-radius: 16px;
  padding: 8px;
  box-shadow: var(--gm-shadow);
  z-index: 100;
}

.gm-model-option {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 12px;
  border-radius: 10px;
  cursor: pointer;
  transition: background-color 0.12s ease;
}

.gm-model-option:hover {
  background-color: var(--gm-bg-surface-hover);
}

.gm-model-option.selected {
  background-color: var(--gm-accent-bg);
}

.gm-topbar-right {
  display: flex;
  align-items: center;
  gap: 10px;
}

.gm-pill-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  height: 36px;
  padding: 0 14px;
  border-radius: 999px;
  border: 1px solid var(--gm-border);
  background-color: var(--gm-bg-surface);
  color: var(--gm-text-primary);
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.15s ease;
  text-decoration: none;
}

.gm-pill-badge:hover {
  background-color: var(--gm-bg-surface-hover);
  border-color: var(--gm-accent);
}

.gm-pill-badge.vip-active {
  background: linear-gradient(135deg, rgba(66, 133, 244, 0.16), rgba(155, 114, 203, 0.16));
  border-color: rgba(168, 199, 250, 0.35);
}

.gm-pill-badge.vip-expired {
  background: rgba(242, 139, 130, 0.15);
  border-color: var(--gm-danger);
  color: var(--gm-danger);
}

.gm-avatar-btn {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: 2px solid transparent;
  background: linear-gradient(135deg, #4285f4, #9b72cb, #d96570);
  color: #ffffff;
  font-weight: 600;
  font-size: 15px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
}

/* ==================== Center Greeting & Chat Stream ==================== */
.gm-chat-viewport {
  flex: 1;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 16px 20px 24px;
  scroll-behavior: smooth;
}

.gm-chat-container {
  width: 100%;
  max-width: 820px;
  display: flex;
  flex-direction: column;
  gap: 28px;
}

.gm-welcome-screen {
  margin-top: 9vh;
  width: 100%;
  max-width: 820px;
  display: flex;
  flex-direction: column;
  gap: 32px;
  animation: gmFadeIn 0.35s ease;
}

@keyframes gmFadeIn {
  from {
    opacity: 0;
    transform: translateY(8px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.gm-gradient-hello {
  font-size: 52px;
  font-weight: 500;
  line-height: 1.15;
  letter-spacing: -1.2px;
  background: linear-gradient(74deg, #4285f4 0, #9b72cb 9%, #d96570 20%, #d96570 24%, #9b72cb 35%, #4285f4 44%, #9b72cb 50%, #d96570 56%, var(--gm-text-primary) 75%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  display: inline-block;
}

.gm-welcome-sub {
  font-size: 44px;
  font-weight: 500;
  line-height: 1.2;
  letter-spacing: -1px;
  color: #444746;
  margin-top: 4px;
}

[data-theme="light"] .gm-welcome-sub {
  color: #c4c7c5;
}

.gm-suggestion-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
}

@media (max-width: 900px) {
  .gm-suggestion-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .gm-gradient-hello {
    font-size: 36px;
  }
  .gm-welcome-sub {
    font-size: 30px;
  }
}

.gm-suggestion-card {
  background-color: var(--gm-bg-card);
  border-radius: 16px;
  padding: 16px;
  height: 168px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  cursor: pointer;
  transition: background-color 0.15s ease, transform 0.15s ease;
  border: 1px solid transparent;
}

.gm-suggestion-card:hover {
  background-color: var(--gm-bg-card-hover);
  transform: translateY(-2px);
}

.gm-suggestion-text {
  font-size: 14.5px;
  color: var(--gm-text-primary);
  line-height: 1.45;
}

.gm-suggestion-icon {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background-color: var(--gm-bg-main);
  display: flex;
  align-items: center;
  justify-content: center;
  align-self: flex-end;
  font-size: 16px;
}

/* ==================== Chat Message Bubbles ==================== */
.gm-msg-user-row {
  display: flex;
  justify-content: flex-end;
  width: 100%;
}

.gm-msg-user-bubble {
  max-width: 75%;
  background-color: var(--gm-bg-user-bubble);
  color: var(--gm-text-primary);
  padding: 13px 20px;
  border-radius: 24px 6px 24px 24px;
  font-size: 15.5px;
  line-height: 1.6;
  white-space: pre-wrap;
  word-break: break-word;
}

.gm-msg-model-row {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  width: 100%;
}

.gm-model-sparkle {
  width: 30px;
  height: 30px;
  flex-shrink: 0;
  margin-top: 2px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.gm-model-sparkle.spinning svg,
.gm-model-sparkle.spinning img {
  animation: gmSpin 2.2s linear infinite;
}

@keyframes gmSpin {
  0% {
    transform: rotate(0deg) scale(0.95);
  }
  50% {
    transform: rotate(180deg) scale(1.08);
  }
  100% {
    transform: rotate(360deg) scale(0.95);
  }
}

.gm-msg-model-body {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

/* Thinking Accordion (1:1 Gemini 2.5 Pro Show Thinking) */
.gm-thinking-box {
  background-color: var(--gm-bg-surface);
  border: 1px solid var(--gm-border-subtle);
  border-radius: 14px;
  overflow: hidden;
  max-width: 680px;
}

.gm-thinking-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 9px 14px;
  font-size: 13px;
  font-weight: 500;
  color: var(--gm-text-secondary);
  cursor: pointer;
  user-select: none;
}

.gm-thinking-header:hover {
  background-color: var(--gm-bg-surface-hover);
}

.gm-thinking-content {
  padding: 10px 14px 12px;
  border-top: 1px solid var(--gm-border-subtle);
  font-size: 13px;
  line-height: 1.6;
  color: var(--gm-text-muted);
  white-space: pre-wrap;
  font-family: "SFMono-Regular", Consolas, monospace;
}

/* Markdown Typography */
.gm-markdown {
  font-size: 15.5px;
  line-height: 1.7;
  color: var(--gm-text-primary);
  word-break: break-word;
}

.gm-markdown p {
  margin-bottom: 12px;
}

.gm-markdown ul,
.gm-markdown ol {
  margin: 8px 0 14px 22px;
}

.gm-markdown li {
  margin-bottom: 6px;
}

.gm-markdown blockquote {
  border-left: 3px solid var(--gm-accent);
  padding: 8px 14px;
  background-color: var(--gm-bg-surface);
  border-radius: 0 10px 10px 0;
  margin: 10px 0;
  color: var(--gm-text-secondary);
}

.gm-code-block {
  margin: 14px 0;
  border-radius: 12px;
  overflow: hidden;
  background-color: var(--gm-bg-code);
  border: 1px solid var(--gm-border-subtle);
}

.gm-code-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 7px 14px;
  background-color: var(--gm-bg-code-header);
  font-size: 12px;
  color: var(--gm-text-secondary);
  font-family: monospace;
}

.gm-code-copy-btn {
  background: transparent;
  border: none;
  color: var(--gm-text-secondary);
  cursor: pointer;
  font-size: 12px;
  padding: 2px 8px;
  border-radius: 6px;
}

.gm-code-copy-btn:hover {
  background-color: var(--gm-bg-surface-hover);
  color: var(--gm-text-primary);
}

.gm-code-block pre {
  padding: 14px;
  overflow-x: auto;
  font-family: "JetBrains Mono", "SFMono-Regular", Menlo, Consolas, monospace;
  font-size: 13.5px;
  line-height: 1.55;
  color: var(--gm-text-primary);
}

.gm-msg-actions {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-top: 2px;
  color: var(--gm-text-muted);
  font-size: 12px;
}

.gm-cursor-tag {
  margin-left: auto;
  font-size: 11px;
  color: var(--gm-text-muted);
  background-color: var(--gm-bg-surface);
  padding: 2px 8px;
  border-radius: 999px;
}

/* ==================== Bottom Input Capsule (1:1 Gemini Prompt Box) ==================== */
.gm-input-dock {
  width: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 6px 20px 16px;
  background: linear-gradient(180deg, transparent 0%, var(--gm-bg-main) 25%);
}

.gm-input-capsule {
  width: 100%;
  max-width: 820px;
  background-color: var(--gm-bg-surface);
  border-radius: 28px;
  padding: 12px 16px 10px 20px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  border: 1px solid var(--gm-border-subtle);
  transition: background-color 0.15s ease, border-color 0.15s ease;
}

.gm-input-capsule:focus-within {
  background-color: var(--gm-bg-surface-hover);
  border-color: var(--gm-border);
}

.gm-prompt-textarea {
  width: 100%;
  min-height: 28px;
  max-height: 180px;
  resize: none;
  border: none;
  outline: none;
  background: transparent;
  color: var(--gm-text-primary);
  font-size: 16px;
  font-family: inherit;
  line-height: 1.5;
}

.gm-prompt-textarea::placeholder {
  color: var(--gm-text-muted);
}

.gm-input-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.gm-toolbar-left {
  display: flex;
  align-items: center;
  gap: 6px;
}

.gm-tool-chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  height: 32px;
  padding: 0 12px;
  border-radius: 999px;
  border: 1px solid var(--gm-border);
  background: transparent;
  color: var(--gm-text-secondary);
  font-size: 12.5px;
  cursor: pointer;
}

.gm-tool-chip:hover,
.gm-tool-chip.active {
  background-color: var(--gm-accent-bg);
  color: var(--gm-accent);
  border-color: var(--gm-accent);
}

.gm-send-btn {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  border: none;
  background-color: var(--gm-text-primary);
  color: var(--gm-bg-main);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: transform 0.12s ease, opacity 0.15s ease;
}

.gm-send-btn:disabled {
  opacity: 0.3;
  cursor: not-allowed;
}

.gm-send-btn:not(:disabled):hover {
  transform: scale(1.05);
}

.gm-disclaimer {
  margin-top: 8px;
  font-size: 11.5px;
  color: var(--gm-text-muted);
  text-align: center;
}

/* ==================== Modals (Login / Register / CDK / Native Inspector) ==================== */
.gm-modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.65);
  backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  padding: 16px;
}

.gm-modal-card {
  width: 100%;
  max-width: 460px;
  background-color: var(--gm-bg-modal);
  border: 1px solid var(--gm-border);
  border-radius: 24px;
  padding: 28px;
  box-shadow: var(--gm-shadow);
  color: var(--gm-text-primary);
}

.gm-modal-card.wide {
  max-width: 760px;
}

.gm-form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-bottom: 14px;
}

.gm-form-label {
  font-size: 13px;
  color: var(--gm-text-secondary);
}

.gm-input {
  height: 42px;
  padding: 0 14px;
  border-radius: 12px;
  border: 1px solid var(--gm-border);
  background-color: var(--gm-bg-main);
  color: var(--gm-text-primary);
  font-size: 14px;
  outline: none;
}

.gm-input:focus {
  border-color: var(--gm-accent);
}

.gm-btn-primary {
  height: 42px;
  padding: 0 20px;
  border-radius: 999px;
  border: none;
  background-color: var(--gm-accent);
  color: #041e49;
  font-weight: 600;
  font-size: 14px;
  cursor: pointer;
  transition: opacity 0.15s ease;
}

[data-theme="light"] .gm-btn-primary {
  color: #ffffff;
}

.gm-btn-primary:hover {
  opacity: 0.9;
}

.gm-hidden {
  display: none !important;
}