/* ── Sudut Kisah — Slate Blue Theme ─────────────────────────────────────── */
:root {
  --sk-bg: #080a10;
  --sk-bg2: #0a0d18;
  --sk-bg3: #10152a;
  --sk-border: #1a2035;
  --sk-border2: #3a4878;
  --sk-acc: #6888d4;
  --sk-acc2: #3a4878;
  --sk-text: #d4d8f0;
  --sk-text2: #8898c8;
  --sk-text3: #2a3058;
  --sk-text4: #1a2035;
  --sk-danger: #d4688c;
}

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

html, body {
  height: 100%;
  background: var(--sk-bg);
  color: var(--sk-text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", sans-serif;
  font-size: 15px;
  -webkit-font-smoothing: antialiased;
  overscroll-behavior: none;
}

body {
  background:
    radial-gradient(1200px 600px at 20% 0%, rgba(58,72,120,0.15), transparent 60%),
    radial-gradient(900px 500px at 80% 100%, rgba(104,136,212,0.08), transparent 60%),
    var(--sk-bg);
}

#app {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: stretch;
  justify-content: center;
  padding: 24px 20px;
  padding-top: max(24px, env(safe-area-inset-top));
  padding-bottom: max(24px, env(safe-area-inset-bottom));
}

/* ── Shared atoms ─────────────────────────────────────────────────────── */
.brand {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  margin-bottom: 28px;
  text-align: center;
}
.brand-icon {
  width: 64px;
  height: 64px;
  border-radius: 18px;
  background: linear-gradient(135deg, var(--sk-acc2), var(--sk-acc));
  display: grid;
  place-items: center;
  font-size: 30px;
  box-shadow: 0 8px 28px rgba(104,136,212,0.25);
}
.brand-name {
  font-size: 22px;
  font-weight: 600;
  letter-spacing: 0.4px;
  color: var(--sk-text);
}
.brand-sub {
  font-size: 12px;
  color: var(--sk-text2);
  letter-spacing: 0.5px;
  text-transform: uppercase;
}

h1.screen-title {
  font-size: 20px;
  font-weight: 600;
  margin-bottom: 6px;
}
p.screen-sub {
  color: var(--sk-text2);
  font-size: 13px;
  margin-bottom: 22px;
}

/* ── Text input ───────────────────────────────────────────────────────── */
.input {
  width: 100%;
  background: var(--sk-bg2);
  border: 1px solid var(--sk-border);
  color: var(--sk-text);
  border-radius: 12px;
  padding: 14px 16px;
  font-size: 15px;
  outline: none;
  transition: border-color 0.15s;
}
.input:focus { border-color: var(--sk-acc); }
.input::placeholder { color: var(--sk-text3); }

/* ── PIN dots ─────────────────────────────────────────────────────────── */
.dots {
  display: flex;
  justify-content: center;
  gap: 12px;
  margin: 18px 0 22px;
}
.dot {
  width: 14px;
  height: 14px;
  border-radius: 50%;
  border: 1.5px solid var(--sk-border2);
  background: transparent;
  transition: background 0.15s, transform 0.15s, border-color 0.15s;
}
.dot.filled { background: var(--sk-acc); border-color: var(--sk-acc); }
.dots.shake { animation: shake 0.4s; }
.dots.shake .dot { border-color: var(--sk-danger); }
.dots.shake .dot.filled { background: var(--sk-danger); border-color: var(--sk-danger); }

@keyframes shake {
  0%, 100% { transform: translateX(0); }
  20% { transform: translateX(-8px); }
  40% { transform: translateX(8px); }
  60% { transform: translateX(-6px); }
  80% { transform: translateX(6px); }
}

/* ── Numpad ───────────────────────────────────────────────────────────── */
.numpad {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
  max-width: 320px;
  width: 100%;
  margin: 0 auto;
}
.numpad button {
  background: var(--sk-bg2);
  border: 1px solid var(--sk-border);
  color: var(--sk-text);
  border-radius: 14px;
  height: 60px;
  font-size: 22px;
  font-weight: 500;
  cursor: pointer;
  transition: background 0.1s, transform 0.05s, border-color 0.1s;
  font-family: inherit;
}
.numpad button:active {
  background: var(--sk-bg3);
  transform: scale(0.97);
}
.numpad button.disabled {
  opacity: 0.4;
  pointer-events: none;
}
.numpad .back { color: var(--sk-text2); }
.numpad .back svg { display: block; margin: 0 auto; }

/* ── Buttons ──────────────────────────────────────────────────────────── */
.btn {
  width: 100%;
  background: var(--sk-acc);
  color: white;
  border: 0;
  border-radius: 12px;
  padding: 14px 16px;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  transition: opacity 0.1s, background 0.1s;
  font-family: inherit;
}
.btn:active { opacity: 0.85; }
.btn.ghost {
  background: transparent;
  border: 1px solid var(--sk-border);
  color: var(--sk-text2);
}
.btn.ghost:active { background: var(--sk-bg2); }
.btn.full { max-width: 320px; margin: 0 auto; }

/* ── Error / Info text ────────────────────────────────────────────────── */
.err {
  color: var(--sk-danger);
  font-size: 13px;
  text-align: center;
  min-height: 18px;
  margin: 8px 0 0;
}
.hint {
  color: var(--sk-text2);
  font-size: 12px;
  text-align: center;
  margin-top: 8px;
}

/* ── App screen (placeholder) ─────────────────────────────────────────── */
.app-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  max-width: 720px;
  margin: 0 auto 24px;
  padding: 14px 18px;
  background: var(--sk-bg2);
  border: 1px solid var(--sk-border);
  border-radius: 14px;
}
.app-header h2 {
  font-size: 16px;
  font-weight: 600;
}
.app-header .role-pill {
  font-size: 11px;
  color: var(--sk-acc);
  border: 1px solid var(--sk-border2);
  padding: 3px 10px;
  border-radius: 999px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.welcome {
  text-align: center;
  max-width: 480px;
  margin: 30px auto;
  padding: 36px 24px;
  background: var(--sk-bg2);
  border: 1px solid var(--sk-border);
  border-radius: 18px;
}
.welcome .user {
  font-size: 20px;
  font-weight: 600;
  margin-bottom: 4px;
}
.welcome .sub {
  color: var(--sk-text2);
  font-size: 13px;
  margin-bottom: 22px;
}
.logout-btn {
  display: inline-block;
  background: transparent;
  border: 1px solid var(--sk-border2);
  color: var(--sk-text2);
  border-radius: 10px;
  padding: 10px 20px;
  font-size: 13px;
  cursor: pointer;
  font-family: inherit;
}
.logout-btn:active { background: var(--sk-bg3); }

/* ── Screen visibility ────────────────────────────────────────────────── */
.screen { display: none; width: 100%; max-width: 420px; margin: 0 auto; }
.screen.active { display: flex; flex-direction: column; align-items: stretch; }

/* ── Chat layout (Phase 2) ───────────────────────────────────────────── */
.chat-layout {
  display: grid;
  grid-template-columns: 260px 1fr;
  width: 100%;
  max-width: 1100px;
  height: calc(100vh - 48px);
  height: calc(100dvh - 48px);
  margin: 0 auto;
  border: 1px solid var(--sk-border);
  border-radius: 18px;
  overflow: hidden;
  background: var(--sk-bg2);
}

/* ── Sidebar ─────────────────────────────────────────────────────────── */
.sidebar {
  display: flex;
  flex-direction: column;
  background: var(--sk-bg2);
  border-right: 1px solid var(--sk-border);
  min-width: 0;
}
.sidebar-header {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 16px 14px;
  border-bottom: 1px solid var(--sk-border);
}
.sidebar-icon {
  width: 32px; height: 32px;
  border-radius: 8px;
  background: linear-gradient(135deg, var(--sk-acc2), var(--sk-acc));
  display: grid; place-items: center;
  font-size: 16px;
}
.sidebar-name {
  font-size: 14px;
  font-weight: 600;
  color: var(--sk-text);
}
.sidebar-new {
  margin: 12px;
  padding: 10px 12px;
  background: var(--sk-acc);
  color: white;
  border: 0;
  border-radius: 10px;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  font-family: inherit;
  transition: opacity 0.1s;
}
.sidebar-new:active { opacity: 0.85; }
.sidebar-section {
  font-size: 11px;
  color: var(--sk-text3);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  padding: 14px 16px 6px;
}
.sidebar-list {
  flex: 1;
  overflow-y: auto;
  padding: 0 6px 8px;
}
.sidebar-item {
  padding: 10px 12px;
  border-radius: 8px;
  cursor: pointer;
  font-size: 13px;
  color: var(--sk-text2);
  margin-bottom: 2px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 6px;
}
.sidebar-item:hover { background: var(--sk-bg3); color: var(--sk-text); }
.sidebar-item.active { background: var(--sk-bg3); color: var(--sk-text); border-left: 2px solid var(--sk-acc); }
.sidebar-item .del {
  background: transparent;
  border: 0;
  color: var(--sk-text3);
  font-size: 16px;
  padding: 0 4px;
  cursor: pointer;
  opacity: 0;
  transition: opacity 0.1s;
}
.sidebar-item:hover .del { opacity: 1; }
.sidebar-item .del:hover { color: var(--sk-danger); }
.sidebar-empty {
  padding: 20px 16px;
  font-size: 12px;
  color: var(--sk-text3);
  text-align: center;
}
.sidebar-footer {
  border-top: 1px solid var(--sk-border);
  padding: 12px 14px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 12px;
  color: var(--sk-text2);
}
.sidebar-foot-btn {
  background: transparent;
  border: 1px solid var(--sk-border);
  color: var(--sk-text2);
  border-radius: 8px;
  padding: 6px 10px;
  font-size: 11px;
  cursor: pointer;
  font-family: inherit;
  margin-left: 6px;
}
.sidebar-foot-btn:active { background: var(--sk-bg3); }
.sidebar-foot-btn.danger { color: var(--sk-danger); border-color: var(--sk-danger); }

/* ── Chat area ───────────────────────────────────────────────────────── */
.chat-area {
  display: flex;
  flex-direction: column;
  min-width: 0;
  background: var(--sk-bg);
}
.chat-topbar {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 14px 18px;
  border-bottom: 1px solid var(--sk-border);
  background: var(--sk-bg2);
}
.chat-topbar .hamburger {
  display: none;
  background: transparent;
  border: 0;
  color: var(--sk-text);
  cursor: pointer;
  padding: 4px;
}
.chat-topbar .title {
  font-size: 14px;
  font-weight: 600;
  color: var(--sk-text);
  flex: 1;
  min-width: 0;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.model-badge {
  font-size: 11px;
  color: var(--sk-acc);
  border: 1px solid var(--sk-border2);
  padding: 3px 10px;
  border-radius: 999px;
  text-transform: lowercase;
  letter-spacing: 0.3px;
}

.chat-messages {
  flex: 1;
  overflow-y: auto;
  padding: 20px 18px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.chat-empty {
  margin: auto;
  text-align: center;
  color: var(--sk-text3);
  font-size: 13px;
  max-width: 320px;
  line-height: 1.5;
}
.chat-empty .big {
  font-size: 40px;
  margin-bottom: 10px;
}

.bubble {
  max-width: 78%;
  padding: 12px 16px;
  border-radius: 14px;
  font-size: 14px;
  line-height: 1.55;
  white-space: pre-wrap;
  word-wrap: break-word;
}
.bubble.user {
  align-self: flex-end;
  background: var(--sk-acc2);
  color: var(--sk-text);
  border-bottom-right-radius: 4px;
}
.bubble.ai {
  align-self: flex-start;
  background: var(--sk-bg3);
  color: var(--sk-text);
  border: 1px solid var(--sk-border);
  border-bottom-left-radius: 4px;
  font-style: italic;
}
.bubble.streaming::after {
  content: '▌';
  animation: blink 1s step-end infinite;
  color: var(--sk-acc);
  font-style: normal;
}
@keyframes blink { 50% { opacity: 0; } }

.chat-inputbar {
  border-top: 1px solid var(--sk-border);
  padding: 12px 14px 14px;
  background: var(--sk-bg2);
}
.chat-inputwrap {
  display: flex;
  align-items: flex-end;
  gap: 8px;
  background: var(--sk-bg);
  border: 1px solid var(--sk-border);
  border-radius: 14px;
  padding: 8px 10px;
}
.chat-inputwrap:focus-within { border-color: var(--sk-acc); }
.attach-btn, .send-btn {
  background: transparent;
  border: 0;
  color: var(--sk-text2);
  cursor: pointer;
  padding: 6px;
  border-radius: 8px;
  display: grid;
  place-items: center;
  font-family: inherit;
}
.attach-btn:hover, .send-btn:hover { color: var(--sk-text); background: var(--sk-bg3); }
.send-btn.active { color: var(--sk-acc); }
.chat-textarea {
  flex: 1;
  background: transparent;
  border: 0;
  color: var(--sk-text);
  font-family: inherit;
  font-size: 14px;
  line-height: 1.5;
  resize: none;
  outline: none;
  max-height: 160px;
  min-height: 22px;
  padding: 6px 4px;
}
.chat-textarea::placeholder { color: var(--sk-text3); }
.chat-hint {
  font-size: 11px;
  color: var(--sk-text3);
  text-align: center;
  margin-top: 8px;
}

/* ── Modal (model selector, balance) ─────────────────────────────────── */
.modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.6);
  display: grid;
  place-items: center;
  z-index: 100;
  padding: 20px;
}
.modal {
  background: var(--sk-bg2);
  border: 1px solid var(--sk-border);
  border-radius: 16px;
  width: 100%;
  max-width: 480px;
  max-height: 85vh;
  overflow-y: auto;
  padding: 22px;
}
.modal-title {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 4px;
}
.modal-sub {
  font-size: 12px;
  color: var(--sk-text2);
  margin-bottom: 16px;
}
.modal-close {
  background: transparent;
  border: 0;
  color: var(--sk-text2);
  font-size: 20px;
  cursor: pointer;
  padding: 0 4px;
  line-height: 1;
}

.model-list { display: flex; flex-direction: column; gap: 10px; }
.model-card {
  border: 1px solid var(--sk-border);
  border-radius: 12px;
  padding: 14px;
  cursor: pointer;
  transition: border-color 0.1s, background 0.1s;
}
.model-card:hover { border-color: var(--sk-border2); background: var(--sk-bg3); }
.model-card-name {
  font-size: 14px;
  font-weight: 600;
  color: var(--sk-text);
  margin-bottom: 4px;
}
.model-card-desc {
  font-size: 12px;
  color: var(--sk-text2);
  margin-bottom: 8px;
}
.model-card-meta {
  display: flex;
  gap: 12px;
  font-size: 11px;
  color: var(--sk-text3);
}
.model-card-meta b { color: var(--sk-text2); font-weight: 500; }

/* ── Mobile (sidebar drawer) ─────────────────────────────────────────── */
@media (max-width: 720px) {
  #app { padding: 0; }
  .chat-layout {
    grid-template-columns: 1fr;
    height: 100vh;
    height: 100dvh;
    border-radius: 0;
    border: 0;
  }
  .sidebar {
    position: fixed;
    inset: 0 auto 0 0;
    width: 280px;
    z-index: 50;
    transform: translateX(-100%);
    transition: transform 0.2s ease;
    border-right: 1px solid var(--sk-border);
  }
  .sidebar.open { transform: translateX(0); }
  .sidebar-scrim {
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.5);
    z-index: 40;
    display: none;
  }
  .sidebar-scrim.show { display: block; }
  .chat-topbar .hamburger { display: grid; place-items: center; }
  .chat-messages { padding: 16px 12px; }
  .bubble { max-width: 86%; }
}

/* ── Toast / inline notice ───────────────────────────────────────────── */
.notice {
  margin: 10px 18px 0;
  padding: 10px 14px;
  border-radius: 10px;
  font-size: 13px;
  background: var(--sk-bg3);
  border: 1px solid var(--sk-border2);
  color: var(--sk-text2);
  text-align: center;
}
.notice.warn { border-color: var(--sk-danger); color: var(--sk-danger); }