:root {
  --bg: #0c0c10;
  --bg-elevated: #12121a;
  --surface: rgba(22, 22, 30, 0.72);
  --surface-solid: #16161e;
  --border: rgba(255, 255, 255, 0.08);
  --border-strong: rgba(255, 255, 255, 0.14);
  --text: #f2f0eb;
  --muted: #9b97a8;
  --accent: #7c6cf0;
  --accent-alt: #4ecdc4;
  --accent-soft: rgba(124, 108, 240, 0.14);
  --accent-hover: #9588f5;
  --accent-glow: rgba(124, 108, 240, 0.35);
  --high: #ff7b72;
  --medium: #f0c674;
  --low: #8b949e;
  --shadow: 0 12px 40px rgba(0, 0, 0, 0.45);
  --shadow-sm: 0 4px 16px rgba(0, 0, 0, 0.25);
  --radius: 14px;
  --radius-lg: 20px;
  --font: "DM Sans", "Noto Sans JP", "Hiragino Sans", sans-serif;
  --glass: blur(20px) saturate(1.2);
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  font-size: 16px;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: var(--font);
  color: var(--text);
  background:
    radial-gradient(ellipse 80% 60% at 10% -10%, rgba(124, 108, 240, 0.18), transparent 50%),
    radial-gradient(ellipse 60% 50% at 90% 0%, rgba(78, 205, 196, 0.1), transparent 45%),
    var(--bg);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

.app {
  display: grid;
  grid-template-columns: 240px 1fr;
  min-height: 100vh;
}

.sidebar {
  display: flex;
  flex-direction: column;
  padding: 1.5rem 1rem;
  background: rgba(12, 12, 16, 0.85);
  backdrop-filter: var(--glass);
  border-right: 1px solid var(--border);
}

.brand {
  display: flex;
  gap: 0.75rem;
  align-items: center;
  margin-bottom: 2rem;
  padding: 0 0.5rem;
}

.brand-icon {
  font-size: 1.5rem;
  color: var(--accent);
}

.brand strong {
  display: block;
  font-size: 1.1rem;
}

.brand small {
  color: var(--muted);
  font-size: 0.8rem;
}

.nav {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  flex: 1;
}

.nav-btn {
  text-align: left;
  padding: 0.65rem 0.85rem;
  border: none;
  border-radius: 8px;
  background: transparent;
  color: var(--text);
  font: inherit;
  cursor: pointer;
  transition: background 0.15s, color 0.15s;
}

.nav-btn:hover {
  background: var(--accent-soft);
}

.nav-btn.active {
  background: linear-gradient(135deg, var(--accent) 0%, #5b4fd4 100%);
  color: #fff;
  box-shadow: 0 4px 16px var(--accent-glow);
}

.nav-btn-ai.active {
  background: linear-gradient(135deg, var(--accent-alt) 0%, #3aa89f 100%);
  box-shadow: 0 4px 16px rgba(78, 205, 196, 0.3);
}

.sidebar-foot {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  padding-top: 1rem;
  border-top: 1px solid var(--border);
}

.text-btn {
  background: none;
  border: none;
  color: var(--muted);
  font-size: 0.85rem;
  cursor: pointer;
  text-align: left;
  padding: 0.25rem 0.5rem;
  font-family: inherit;
}

.text-btn:hover {
  color: var(--accent);
}

.import-label {
  cursor: pointer;
}

.main {
  padding: 2rem 2.5rem;
  max-width: 1080px;
}

.page-header h1 {
  margin: 0 0 0.25rem;
  font-size: 1.85rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  background: linear-gradient(135deg, var(--text) 0%, var(--muted) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.muted {
  color: var(--muted);
  margin: 0 0 1.5rem;
}

.view[hidden] {
  display: none !important;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.stat-card {
  background: var(--surface);
  backdrop-filter: var(--glass);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1rem 1.15rem;
  box-shadow: var(--shadow-sm);
  transition: border-color 0.2s, transform 0.2s;
}

.stat-card:hover {
  border-color: var(--border-strong);
  transform: translateY(-2px);
}

.stat-card .value {
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--accent);
  line-height: 1.2;
}

.stat-card .label {
  font-size: 0.85rem;
  color: var(--muted);
}

.dash-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

.card {
  background: var(--surface);
  backdrop-filter: var(--glass);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.25rem 1.35rem;
  box-shadow: var(--shadow-sm);
}

.card-wide {
  grid-column: 1 / -1;
}

.card h2 {
  margin: 0 0 0.75rem;
  font-size: 1rem;
  font-weight: 600;
}

.dash-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.dash-list li {
  padding: 0.45rem 0;
  border-bottom: 1px solid var(--border);
  font-size: 0.95rem;
}

.dash-list li:last-child {
  border-bottom: none;
}

.dash-list .empty {
  color: var(--muted);
  font-size: 0.9rem;
  border: none;
}

.add-form {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 1rem;
  align-items: center;
}

.add-form input[type="text"],
.add-form input[type="date"],
.add-form input[type="number"],
.add-form select {
  padding: 0.55rem 0.75rem;
  border: 1px solid var(--border);
  border-radius: 10px;
  font: inherit;
  background: var(--surface-solid);
  color: var(--text);
}

.add-form input[type="text"] {
  flex: 1;
  min-width: 180px;
}

.add-form-wrap input[type="number"] {
  width: 4rem;
}

.suffix {
  color: var(--muted);
  margin-left: -0.25rem;
}

.btn {
  padding: 0.55rem 1rem;
  border: none;
  border-radius: 8px;
  font: inherit;
  cursor: pointer;
  transition: background 0.15s;
}

.btn.primary {
  background: linear-gradient(135deg, var(--accent) 0%, #5b4fd4 100%);
  color: #fff;
  box-shadow: 0 4px 14px var(--accent-glow);
}

.btn.primary:hover {
  background: linear-gradient(135deg, var(--accent-hover) 0%, #6d62e8 100%);
  transform: translateY(-1px);
}

.btn.ghost {
  background: transparent;
  color: var(--muted);
  padding: 0.35rem 0.5rem;
}

.btn.ghost:hover {
  color: var(--high);
}

.filter-bar {
  display: flex;
  gap: 0.35rem;
  margin-bottom: 1rem;
}

.chip {
  padding: 0.35rem 0.75rem;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: var(--surface-solid);
  font: inherit;
  font-size: 0.85rem;
  cursor: pointer;
  color: var(--muted);
  transition: border-color 0.15s, background 0.15s;
}

.chip:hover {
  border-color: var(--border-strong);
  color: var(--text);
}

.chip.active {
  border-color: var(--accent);
  background: var(--accent-soft);
  color: var(--accent-hover);
}

.item-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.item {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  padding: 0.85rem 1rem;
  background: var(--surface-solid);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
}

.item.done .item-title {
  text-decoration: line-through;
  color: var(--muted);
}

.item-body {
  flex: 1;
  min-width: 0;
}

.item-title {
  font-weight: 500;
  word-break: break-word;
}

.item-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 0.35rem;
  font-size: 0.8rem;
  color: var(--muted);
}

.badge {
  display: inline-block;
  padding: 0.1rem 0.45rem;
  border-radius: 4px;
  font-size: 0.75rem;
  font-weight: 600;
}

.badge.high { background: rgba(255, 123, 114, 0.15); color: var(--high); }
.badge.medium { background: rgba(240, 198, 116, 0.15); color: var(--medium); }
.badge.low { background: rgba(139, 148, 158, 0.15); color: var(--low); }

.badge.overdue {
  background: #fde8e5;
  color: var(--high);
}

.item-actions {
  display: flex;
  gap: 0.15rem;
  flex-shrink: 0;
}

.item input[type="checkbox"] {
  width: 1.15rem;
  height: 1.15rem;
  margin-top: 0.2rem;
  accent-color: var(--accent);
  cursor: pointer;
}

.habit-check {
  width: 2rem;
  height: 2rem;
  border-radius: 50%;
  border: 2px solid var(--border);
  background: var(--surface);
  cursor: pointer;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  transition: border-color 0.15s, background 0.15s;
}

.habit-check.checked {
  border-color: var(--accent);
  background: var(--accent);
  color: #fff;
}

.streak {
  font-weight: 600;
  color: var(--accent);
}

.progress-wrap {
  margin-top: 0.5rem;
}

.progress-bar {
  height: 6px;
  background: var(--border);
  border-radius: 3px;
  overflow: hidden;
}

.progress-fill {
  height: 100%;
  background: var(--accent);
  border-radius: 3px;
  transition: width 0.2s;
}

.progress-input {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-top: 0.5rem;
}

.progress-input input[type="range"] {
  flex: 1;
  accent-color: var(--accent);
}

.empty {
  padding: 1.5rem;
  text-align: center;
  color: var(--muted);
  background: var(--surface);
  border: 1px dashed var(--border);
  border-radius: var(--radius);
}

/* --- ステータス / レベル管理 --- */
.dash-levels {
  margin-top: 0.25rem;
}

.dash-level-summary {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 0.75rem;
}

.dash-level-overall {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--accent);
}

.dash-level-age {
  font-size: 0.9rem;
  color: var(--muted);
}

.dash-level-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.dash-level-chip {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.35rem 0.65rem;
  background: var(--accent-soft);
  border-radius: 999px;
  font-size: 0.85rem;
}

.dash-level-chip strong {
  color: var(--accent);
}

.dash-level-hint {
  margin: 0.75rem 0 0;
  font-size: 0.85rem;
}

.level-hero {
  margin-bottom: 1rem;
  background: linear-gradient(135deg, #2a2450 0%, #3d3580 40%, #2d6b66 100%);
  color: #fff;
  border: 1px solid rgba(255, 255, 255, 0.12);
}

.level-hero-inner {
  display: flex;
  align-items: center;
  gap: 1.25rem;
}

.level-avatar {
  width: 4rem;
  height: 4rem;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
  background: rgba(255, 255, 255, 0.15);
  border-radius: 50%;
  border: 2px solid rgba(255, 255, 255, 0.35);
}

.level-hero-info h2 {
  margin: 0 0 0.35rem;
  font-size: 1.5rem;
}

.level-hero-meta {
  margin: 0;
  display: flex;
  gap: 1rem;
  font-size: 0.95rem;
  opacity: 0.9;
}

.profile-form h2,
.level-section-head h2 {
  margin: 0 0 0.75rem;
  font-size: 1rem;
  font-weight: 600;
}

.profile-form {
  margin-bottom: 1rem;
}

.profile-fields {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  align-items: flex-end;
}

.profile-fields label {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  font-size: 0.85rem;
  color: var(--muted);
}

.profile-fields input {
  padding: 0.55rem 0.75rem;
  border: 1px solid var(--border);
  border-radius: 8px;
  font: inherit;
  background: var(--surface);
  color: var(--text);
}

.level-section {
  margin-bottom: 1rem;
}

.level-section-head {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  margin-bottom: 0.75rem;
}

.inline-form {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  align-items: center;
}

.stat-icon-input {
  width: 3rem;
  text-align: center;
  padding: 0.45rem;
  border: 1px solid var(--border);
  border-radius: 8px;
  font: inherit;
}

.inline-form input[type="text"]:not(.stat-icon-input) {
  padding: 0.45rem 0.65rem;
  border: 1px solid var(--border);
  border-radius: 8px;
  font: inherit;
  min-width: 120px;
}

.stat-cards {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 0.75rem;
  margin-bottom: 1rem;
}

.stat-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1rem;
  box-shadow: var(--shadow);
  transition: box-shadow 0.2s, transform 0.2s;
}

.stat-card.maxed {
  border-color: #c49a3d;
  background: linear-gradient(180deg, #fffdf9 0%, #fdf8ee 100%);
}

.stat-card.level-up-flash {
  animation: levelUpPulse 1.2s ease;
}

@keyframes levelUpPulse {
  0%, 100% { box-shadow: var(--shadow); transform: scale(1); }
  30% { box-shadow: 0 0 0 3px #c49a3d, var(--shadow); transform: scale(1.02); }
  60% { box-shadow: 0 0 0 6px rgba(196, 154, 61, 0.3), var(--shadow); }
}

.stat-card-head {
  display: flex;
  align-items: flex-start;
  gap: 0.65rem;
  margin-bottom: 0.65rem;
}

.stat-card-head .stat-icon {
  font-size: 1.75rem;
  line-height: 1;
}

.stat-card-head h3 {
  margin: 0;
  font-size: 1rem;
  font-weight: 600;
}

.stat-lv {
  font-size: 0.85rem;
  color: var(--accent);
  font-weight: 700;
}

.stat-del {
  margin-left: auto;
}

.stat-xp-bar {
  height: 8px;
  background: var(--border);
  border-radius: 4px;
  overflow: hidden;
}

.stat-xp-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--accent) 0%, #5a9a88 100%);
  border-radius: 4px;
  transition: width 0.35s ease;
}

.stat-xp-text {
  margin: 0.35rem 0 0.5rem;
  font-size: 0.8rem;
  color: var(--muted);
}

.stat-quick-btns {
  display: flex;
  gap: 0.35rem;
}

.xp-quick {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.35rem;
  margin-top: 0.75rem;
}

.xp-gain {
  color: var(--accent);
  font-weight: 700;
}

.level-up-badge {
  background: #fdf4e3;
  color: #8a6a1a;
  padding: 0.1rem 0.45rem;
  border-radius: 4px;
  font-size: 0.75rem;
  font-weight: 700;
}

.xp-log-item .item-title {
  font-size: 0.95rem;
}

/* --- やりたいこと / プロジェクト --- */
.project-form .project-next-input {
  flex: 1;
  min-width: 140px;
}

.project-item .project-next {
  margin: 0.35rem 0 0;
  font-size: 0.9rem;
  color: var(--accent);
  font-weight: 500;
}

.project-item .project-notes {
  margin: 0.25rem 0 0.5rem;
  font-size: 0.85rem;
}

.project-edit-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 0.5rem;
}

.project-edit-row select,
.project-edit-row input {
  padding: 0.4rem 0.55rem;
  border: 1px solid var(--border);
  border-radius: 8px;
  font: inherit;
  font-size: 0.85rem;
  background: var(--surface);
}

.project-edit-row input {
  flex: 1;
  min-width: 160px;
}

.badge.cat-meta { background: rgba(124, 108, 240, 0.15); color: #b8adff; }
.badge.cat-game { background: rgba(180, 140, 255, 0.12); color: #c9b3ff; }
.badge.cat-app { background: rgba(100, 160, 255, 0.12); color: #8ec5ff; }
.badge.cat-content { background: rgba(255, 140, 120, 0.12); color: #ffb4a8; }
.badge.cat-sns { background: rgba(120, 200, 100, 0.12); color: #a8e89a; }
.badge.cat-other { background: rgba(139, 148, 158, 0.15); color: var(--low); }

.badge.status-idea { background: rgba(139, 148, 158, 0.15); color: var(--low); }
.badge.status-planning { background: rgba(240, 198, 116, 0.15); color: var(--medium); }
.badge.status-active { background: rgba(124, 108, 240, 0.15); color: #b8adff; }
.badge.status-paused { background: rgba(255, 255, 255, 0.06); color: var(--muted); }
.badge.status-done { background: rgba(78, 205, 196, 0.12); color: var(--accent-alt); }

/* --- AI アシスタント --- */
.ai-note {
  font-size: 0.85rem;
  margin: 0 0 1rem;
}

.ai-settings-form {
  display: grid;
  gap: 0.75rem;
}

.ai-settings-form label {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  font-size: 0.85rem;
  color: var(--muted);
}

.ai-settings-form input,
.ai-settings-form select {
  padding: 0.55rem 0.75rem;
  border: 1px solid var(--border);
  border-radius: 8px;
  font: inherit;
  background: var(--surface);
  color: var(--text);
}

.ai-help {
  margin-top: 1rem;
  font-size: 0.85rem;
  color: var(--muted);
}

.ai-help summary {
  cursor: pointer;
  color: var(--accent);
}

.ai-help code {
  background: var(--accent-soft);
  padding: 0.1rem 0.35rem;
  border-radius: 4px;
  font-size: 0.8rem;
}

.ai-quick {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.ai-chat-card {
  margin-top: 1rem;
}

.ai-messages {
  flex: 1;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
  padding: 1rem;
  scroll-behavior: smooth;
}

.ai-empty {
  margin: 1rem;
  text-align: center;
}

.ai-msg {
  padding: 0.55rem 0.85rem;
  border-radius: var(--radius);
  max-width: 78%;
}

.ai-msg-user {
  align-self: flex-end;
  background: #7ae47a;
  color: #0f1a0f;
  border-radius: 1.1rem 1.1rem 0.25rem 1.1rem;
  border: none;
}

.ai-msg-assistant {
  align-self: flex-start;
  background: #2a2a30;
  border: none;
  color: var(--text);
  border-radius: 1.1rem 1.1rem 1.1rem 0.25rem;
}

.ai-msg-role {
  display: none;
}

.ai-msg-body {
  font-size: 0.9375rem;
  line-height: 1.45;
  word-break: break-word;
}

.ai-add-tasks {
  margin-top: 0.5rem;
}

.ai-form textarea {
  width: 100%;
  padding: 0.75rem;
  border: 1px solid var(--border);
  border-radius: 8px;
  font: inherit;
  resize: vertical;
  margin-bottom: 0.5rem;
  background: var(--surface);
}

.ai-form-actions {
  display: flex;
  justify-content: flex-end;
  gap: 0.5rem;
}

.ai-chat-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  margin-bottom: 0.75rem;
}

.ai-chat-head h2 {
  margin: 0;
}

.ai-field-hint {
  display: block;
  font-size: 0.8rem;
  color: var(--muted);
  margin-top: 0.25rem;
}

/* --- AI 全画面 --- */
body.ai-open {
  overflow: hidden;
}

.ai-fullscreen {
  position: fixed;
  inset: 0;
  z-index: 200;
  display: flex;
  flex-direction: column;
  height: 100dvh;
  background: var(--ai-chat-bg, #111114);
}

.ai-fullscreen[hidden] {
  display: none !important;
}

.ai-fs-header {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  flex-shrink: 0;
  padding: 0.55rem 0.75rem;
  padding-top: calc(0.55rem + env(safe-area-inset-top, 0px));
  min-height: 3rem;
  border-bottom: 1px solid var(--border);
  background: rgba(12, 12, 16, 0.96);
  backdrop-filter: var(--glass);
}

.ai-fs-title {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex: 1;
  min-width: 0;
}

.ai-fs-icon {
  font-size: 1.1rem;
  color: var(--accent-alt);
}

.ai-fs-title strong {
  display: block;
  font-size: 0.95rem;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.ai-fs-title small {
  color: var(--muted);
  font-size: 0.72rem;
}

.ai-fs-actions {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  flex-shrink: 0;
}

.ai-fs-actions .btn.ghost {
  display: none;
}

.ai-fs-quick-wrap {
  flex-shrink: 0;
  padding: 0.45rem 0.75rem 0;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.ai-fs-quick-wrap .ai-quick {
  flex-wrap: nowrap;
  min-width: min-content;
  gap: 0.4rem;
}

.ai-fs-quick-wrap .chip {
  font-size: 0.78rem;
  padding: 0.28rem 0.65rem;
  white-space: nowrap;
}

.ai-fs-messages {
  flex: 1;
  min-height: 0;
  padding: 0.65rem 0.75rem;
  max-width: 820px;
  width: 100%;
  margin: 0 auto;
  background: var(--ai-chat-bg, #111114);
}

.ai-fs-footer {
  flex-shrink: 0;
  padding: 0.45rem 0.65rem calc(0.45rem + env(safe-area-inset-bottom, 0px));
  border-top: 1px solid var(--border);
  background: rgba(12, 12, 16, 0.98);
  backdrop-filter: var(--glass);
}

.ai-fs-form {
  max-width: 820px;
  margin: 0 auto;
}

.ai-fs-input-row {
  display: flex;
  align-items: flex-end;
  gap: 0.45rem;
}

.ai-fs-tool-btn {
  flex-shrink: 0;
  width: 2.25rem;
  height: 2.25rem;
  border: none;
  border-radius: 999px;
  background: transparent;
  font-size: 1rem;
  line-height: 1;
  cursor: pointer;
  opacity: 0.75;
  padding: 0;
}

.ai-fs-tool-btn:active {
  opacity: 1;
}

.ai-fs-input-wrap {
  flex: 1;
  min-width: 0;
  display: flex;
  align-items: center;
  background: var(--surface-solid);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 0.35rem 0.85rem;
}

.ai-fs-form textarea,
.ai-fs-input-wrap textarea {
  width: 100%;
  border: none;
  background: transparent;
  font: inherit;
  resize: none;
  margin: 0;
  padding: 0;
  color: var(--text);
  min-height: 1.35rem;
  max-height: 6.5rem;
  line-height: 1.35;
  font-size: 1rem;
}

.ai-fs-form textarea:focus,
.ai-fs-input-wrap textarea:focus {
  outline: none;
}

.ai-fs-send-btn {
  flex-shrink: 0;
  min-width: 3rem;
  height: 2.25rem;
  padding: 0 0.75rem;
  border: none;
  border-radius: 999px;
  background: #7ae47a;
  color: #0a1a0a;
  font: inherit;
  font-size: 0.82rem;
  font-weight: 700;
  cursor: pointer;
}

.ai-fs-send-btn:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}

.ai-fs-send-btn:not(:disabled):active {
  filter: brightness(0.95);
}

.icon-btn {
  width: 2.25rem;
  height: 2.25rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 10px;
  background: var(--surface-solid);
  border: 1px solid var(--border);
  color: var(--text);
  font-size: 1rem;
  cursor: pointer;
  padding: 0;
}

.icon-btn:hover {
  border-color: var(--border-strong);
  background: var(--accent-soft);
}

/* --- AI 設定ドロワー --- */
.ai-drawer[hidden] {
  display: none !important;
}

.ai-drawer {
  position: fixed;
  inset: 0;
  z-index: 300;
}

.ai-drawer-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.55);
  backdrop-filter: blur(4px);
}

.ai-drawer-panel {
  position: absolute;
  top: 0;
  right: 0;
  width: min(400px, 92vw);
  height: 100%;
  background: var(--bg-elevated);
  border-left: 1px solid var(--border);
  padding: 1.25rem;
  overflow-y: auto;
  box-shadow: -8px 0 32px rgba(0, 0, 0, 0.4);
}

.ai-drawer-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1rem;
}

.ai-drawer-head h2 {
  margin: 0;
  font-size: 1.1rem;
}

.ai-settings-form input,
.ai-settings-form select {
  background: var(--surface-solid);
  color: var(--text);
  border: 1px solid var(--border);
}

@media (max-width: 768px) {
  .app {
    grid-template-columns: 1fr;
  }

  .sidebar {
    flex-direction: row;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.5rem;
    padding: 1rem;
  }

  .brand {
    margin-bottom: 0;
    flex: 1;
  }

  .nav {
    flex-direction: row;
    flex-wrap: wrap;
    width: 100%;
    order: 3;
  }

  .sidebar-foot {
    flex-direction: row;
    border: none;
    padding: 0;
    gap: 0.75rem;
  }

  .main {
    padding: 1.25rem;
  }

  .dash-grid {
    grid-template-columns: 1fr;
  }

  .ai-fs-title small {
    display: none;
  }

  .ai-fs-messages {
    padding: 0.5rem 0.65rem;
    gap: 0.45rem;
  }

  .ai-msg {
    max-width: 82%;
  }

  .ai-fs-send-btn {
    min-width: 2.75rem;
    padding: 0 0.65rem;
  }
}

@media (min-width: 769px) {
  .ai-fullscreen {
    background:
      radial-gradient(ellipse 70% 50% at 50% -20%, rgba(124, 108, 240, 0.18), transparent 55%),
      var(--ai-chat-bg, #111114);
  }

  .ai-fs-header {
    padding: 0.75rem 1.25rem;
    padding-top: calc(0.75rem + env(safe-area-inset-top, 0px));
  }

  .ai-fs-actions .btn.ghost {
    display: inline-flex;
  }

  .ai-fs-messages {
    padding: 1rem 1.25rem;
  }

  .ai-fs-footer {
    padding: 0.65rem 1.25rem calc(0.85rem + env(safe-area-inset-bottom, 0px));
  }

  .ai-msg {
    max-width: 72%;
  }
}