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

:root {
  --bg: #0f0f0f;
  --bg2: #1a1a1a;
  --bg3: #242424;
  --border: rgba(255,255,255,0.08);
  --border2: rgba(255,255,255,0.14);
  --text: #f0f0f0;
  --text2: #999;
  --text3: #666;
  --green: #4ade80;
  --green-bg: rgba(74,222,128,0.1);
  --red: #f87171;
  --red-bg: rgba(248,113,113,0.1);
  --amber: #fbbf24;
  --amber-bg: rgba(251,191,36,0.1);
  --accent: #6366f1;
  --radius: 10px;
  --radius-sm: 6px;
}

html, body { height: 100%; background: var(--bg); color: var(--text); font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif; }

#app { display: flex; flex-direction: column; height: 100dvh; max-width: 480px; margin: 0 auto; }

/* HEADER */
#header { padding: 16px 16px 0; background: var(--bg); border-bottom: 1px solid var(--border); flex-shrink: 0; }
#header h1 { font-size: 20px; font-weight: 600; margin-bottom: 12px; }
#tabs { display: flex; gap: 0; }
.tab { flex: 1; padding: 8px; font-size: 13px; background: none; border: none; border-bottom: 2px solid transparent; color: var(--text2); cursor: pointer; transition: all 0.15s; }
.tab.active { color: var(--text); border-bottom-color: var(--accent); }

/* TAB CONTENT */
.tab-content { display: none; flex: 1; overflow: hidden; flex-direction: column; }
.tab-content.active { display: flex; }

/* CHAT */
#messages { flex: 1; overflow-y: auto; padding: 16px; display: flex; flex-direction: column; gap: 10px; }
.msg { max-width: 82%; padding: 10px 14px; border-radius: var(--radius); font-size: 14px; line-height: 1.5; }
.msg.user { align-self: flex-end; background: var(--accent); color: #fff; border-bottom-right-radius: 3px; }
.msg.bot { align-self: flex-start; background: var(--bg2); color: var(--text); border: 1px solid var(--border); border-bottom-left-radius: 3px; }
.msg-tag { display: inline-block; font-size: 11px; font-weight: 600; padding: 3px 10px; border-radius: 99px; margin-top: 6px; }
.tag-gasto { background: var(--red-bg); color: var(--red); }
.tag-receita { background: var(--green-bg); color: var(--green); }
.tag-divida { background: var(--amber-bg); color: var(--amber); }
.typing { display: flex; gap: 5px; align-items: center; height: 16px; }
.typing span { width: 6px; height: 6px; border-radius: 50%; background: var(--text3); animation: bounce 1s infinite; }
.typing span:nth-child(2) { animation-delay: 0.15s; }
.typing span:nth-child(3) { animation-delay: 0.3s; }
@keyframes bounce { 0%,60%,100%{ transform:translateY(0) } 30%{ transform:translateY(-5px) } }

#input-area { padding: 12px 16px; background: var(--bg); border-top: 1px solid var(--border); display: flex; gap: 8px; align-items: flex-end; padding-bottom: calc(12px + env(safe-area-inset-bottom)); }
#rec-btn { width: 40px; height: 40px; border-radius: 50%; border: 1px solid var(--border2); background: var(--bg2); color: var(--text2); cursor: pointer; font-size: 13px; flex-shrink: 0; display: flex; align-items: center; justify-content: center; transition: all 0.15s; }
#rec-btn.recording { background: var(--red-bg); border-color: var(--red); color: var(--red); }
#user-input { flex: 1; background: var(--bg2); border: 1px solid var(--border); border-radius: var(--radius); padding: 10px 12px; font-size: 14px; color: var(--text); font-family: inherit; resize: none; min-height: 40px; max-height: 100px; line-height: 1.4; }
#user-input:focus { outline: none; border-color: var(--accent); }
#send-btn { height: 40px; padding: 0 16px; background: var(--accent); color: #fff; border: none; border-radius: var(--radius); font-size: 14px; cursor: pointer; font-weight: 500; white-space: nowrap; }
#send-btn:active { opacity: 0.85; }

/* REPORT */
#report-filters { padding: 14px 16px; display: flex; gap: 8px; border-bottom: 1px solid var(--border); flex-shrink: 0; }
#report-filters select, #report-filters button { background: var(--bg2); border: 1px solid var(--border); color: var(--text); border-radius: var(--radius-sm); padding: 7px 10px; font-size: 13px; flex: 1; }
#btn-load-report { background: var(--accent); border-color: var(--accent); color: #fff; cursor: pointer; flex: 0 0 auto; padding: 7px 14px; }
#report-content { flex: 1; overflow-y: auto; padding: 16px; display: flex; flex-direction: column; gap: 12px; }

.summary-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; }
.stat-card { background: var(--bg2); border: 1px solid var(--border); border-radius: var(--radius); padding: 10px 12px; }
.stat-label { font-size: 11px; color: var(--text2); margin-bottom: 4px; }
.stat-value { font-size: 17px; font-weight: 600; }
.stat-value.pos { color: var(--green); }
.stat-value.neg { color: var(--red); }
.stat-value.warn { color: var(--amber); }

.section-heading { font-size: 11px; font-weight: 600; color: var(--text3); text-transform: uppercase; letter-spacing: 0.06em; }

.cat-bar-item { display: flex; flex-direction: column; gap: 4px; }
.cat-bar-header { display: flex; justify-content: space-between; font-size: 13px; }
.cat-bar-track { height: 4px; background: var(--bg3); border-radius: 99px; overflow: hidden; }
.cat-bar-fill { height: 100%; background: var(--red); border-radius: 99px; transition: width 0.4s ease; }

.tx-item { display: flex; justify-content: space-between; align-items: center; padding: 10px 0; border-bottom: 1px solid var(--border); }
.tx-item:last-child { border-bottom: none; }
.tx-desc { font-size: 14px; }
.tx-meta { font-size: 11px; color: var(--text3); margin-top: 2px; }
.tx-amount { font-size: 14px; font-weight: 600; white-space: nowrap; }

.empty-state { text-align: center; color: var(--text3); font-size: 14px; padding: 40px 0; }

/* SETTINGS */
#tab-settings { overflow-y: auto; }
.settings-form { padding: 20px 16px; display: flex; flex-direction: column; gap: 10px; }
.settings-form h2 { font-size: 17px; font-weight: 600; margin-bottom: 6px; }
.settings-form label { font-size: 12px; color: var(--text2); margin-top: 6px; }
.settings-form input { background: var(--bg2); border: 1px solid var(--border); color: var(--text); border-radius: var(--radius-sm); padding: 10px 12px; font-size: 14px; }
.settings-form input:focus { outline: none; border-color: var(--accent); }
#btn-save-settings { background: var(--accent); color: #fff; border: none; border-radius: var(--radius); padding: 12px; font-size: 14px; font-weight: 500; cursor: pointer; margin-top: 8px; }
#settings-msg { font-size: 13px; color: var(--green); min-height: 18px; }