/* ============================================================
   MinecraftChat AI — Theme
   Palette sourced from in-game UI, minecraft.wiki, minecraft.net
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Press+Start+2P&display=swap');

/* ── Variables ─────────────────────────────────────────────── */
:root {
  --mc-void:        #0A0A0F;
  --mc-obsidian:    #14091E;
  --mc-dark:        #1C1C1C;
  --mc-panel:       #2D2D2D;
  --mc-stone:       #7F7F7F;
  --mc-cobble:      #5A5A5A;
  --mc-border:      #000000;

  --mc-grass:       #5A8A2D;
  --mc-grass-light: #8FBE52;
  --mc-grass-dark:  #3D5E1F;
  --mc-leaf:        #4A7A28;

  --mc-dirt:        #966C3E;
  --mc-wood:        #B5883A;
  --mc-sand:        #DBD09B;

  --mc-sky:         #6B8CFF;
  --mc-water:       #3B5BAC;

  --mc-gold:        #FCCC47;
  --mc-diamond:     #4AFFFE;
  --mc-emerald:     #17EB4F;
  --mc-redstone:    #CC0000;
  --mc-lapis:       #1845A0;
  --mc-netherite:   #474249;

  --mc-ui-bg:       #C6C6C6;
  --mc-ui-light:    #FFFFFF;
  --mc-ui-shadow:   #555555;
  --mc-btn-face:    #808080;
  --mc-btn-hover:   #A0A0FF;

  --mc-chat-bg:     rgba(0,0,0,0.55);
  --mc-user-bg:     #12204A;
  --mc-user-border: #3B5BAC;
  --mc-bot-bg:      #132310;
  --mc-bot-border:  #5A8A2D;

  --mc-text:        #F0F0F0;
  --mc-text-dim:    #AAAAAA;
  --mc-text-gold:   #FCCC47;
  --mc-text-green:  #55FF55;
  --mc-text-aqua:   #55FFFF;
  --mc-text-red:    #FF5555;

  --radius: 2px;
  --pixel:  2px;
}

/* ── Reset ─────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { height: -webkit-fill-available; }

/* ── Body ──────────────────────────────────────────────────── */
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, monospace;
  background-color: var(--mc-dark);
  background-image:
    linear-gradient(rgba(0,0,0,0.15) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0,0,0,0.15) 1px, transparent 1px);
  background-size: 32px 32px;
  color: var(--mc-text);
  display: flex;
  flex-direction: column;
  height: 100vh;
  height: 100dvh;
  min-height: -webkit-fill-available;
  overflow: hidden;
}

.pixel { font-family: 'Press Start 2P', monospace; }

/* ── Header ────────────────────────────────────────────────── */
header {
  background: linear-gradient(
    to bottom,
    var(--mc-grass-light) 0%,
    var(--mc-grass)       35%,
    var(--mc-grass-dark)  65%,
    var(--mc-dirt)        100%
  );
  color: #fff;
  padding: 14px 20px;
  display: flex;
  align-items: center;
  gap: 12px;
  box-shadow: 0 var(--pixel) 0 var(--mc-border), 0 4px 0 var(--mc-grass-dark);
}

header .mc-icon {
  font-size: 1.6rem;
  filter: drop-shadow(2px 2px 0 #000);
}

header h1 {
  font-family: 'Press Start 2P', monospace;
  font-size: 0.9rem;
  letter-spacing: 0.05em;
  text-shadow: 2px 2px 0 #000, -1px -1px 0 rgba(0,0,0,0.4);
  line-height: 1.4;
}

header .mc-version {
  margin-left: auto;
  font-size: 0.55rem;
  color: var(--mc-text-gold);
  text-shadow: 1px 1px 0 #000;
  opacity: 0.9;
}

/* ── Status bar ────────────────────────────────────────────── */
#status-bar {
  background: var(--mc-obsidian);
  border-bottom: var(--pixel) solid var(--mc-border);
  padding: 5px 16px;
  display: flex;
  align-items: center;
  gap: 14px;
  flex-wrap: wrap;
  font-size: 0.65rem;
  font-family: 'Press Start 2P', monospace;
}

.svc { display: flex; align-items: center; gap: 6px; color: var(--mc-text-dim); }

.dot {
  width: 10px; height: 10px;
  border: 1px solid rgba(0,0,0,0.6);
  flex-shrink: 0;
}
.dot.ok       { background: var(--mc-emerald);  box-shadow: inset 1px 1px rgba(255,255,255,0.4); }
.dot.fail     { background: var(--mc-redstone); box-shadow: inset 1px 1px rgba(255,255,255,0.3); }
.dot.checking { background: var(--mc-stone); animation: mc-pulse 1s steps(2) infinite; }

@keyframes mc-pulse {
  0%, 100% { opacity: 0.4; }
  50%       { opacity: 1.0; }
}

#status-ready { margin-left: auto; font-size: 0.5rem; }
#status-ready.ok       { color: var(--mc-text-green); }
#status-ready.fail     { color: var(--mc-text-red); }
#status-ready.checking { color: var(--mc-text-dim); }

/* ── Chat window ───────────────────────────────────────────── */
#chat-window {
  flex: 1;
  overflow-y: auto;
  padding: 20px 16px;
  display: flex;
  flex-direction: column;
  gap: 14px;
  scrollbar-width: thin;
  scrollbar-color: var(--mc-cobble) var(--mc-void);
}
#chat-window::-webkit-scrollbar       { width: 8px; }
#chat-window::-webkit-scrollbar-track { background: var(--mc-void); }
#chat-window::-webkit-scrollbar-thumb { background: var(--mc-cobble); border: 1px solid #000; }

/* ── Messages ──────────────────────────────────────────────── */
.message { display: flex; flex-direction: column; max-width: 78%; }
.message.user { align-self: flex-end;   align-items: flex-end; }
.message.bot  { align-self: flex-start; align-items: flex-start; }

.bubble {
  padding: 12px 15px;
  line-height: 1.65;
  white-space: pre-wrap;
  word-break: break-word;
  font-size: 0.9rem;
  border: var(--pixel) solid var(--mc-border);
  position: relative;
}

.message.user .bubble {
  background: var(--mc-user-bg);
  border-top: var(--pixel) solid var(--mc-user-border);
  box-shadow: inset 1px 1px rgba(255,255,255,0.06), 2px 2px 0 var(--mc-border);
  border-radius: 0 0 0 var(--radius);
}

.message.bot .bubble {
  background: var(--mc-bot-bg);
  border-top: var(--pixel) solid var(--mc-bot-border);
  box-shadow: inset 1px 1px rgba(255,255,255,0.06), 2px 2px 0 var(--mc-border);
  border-radius: 0 0 var(--radius) 0;
}

/* ── Speaker labels ────────────────────────────────────────── */
.msg-label {
  font-family: 'Press Start 2P', monospace;
  font-size: 0.45rem;
  margin-bottom: 4px;
  letter-spacing: 0.05em;
}
.message.user .msg-label { color: var(--mc-sky); }
.message.bot  .msg-label { color: var(--mc-grass-light); }

/* ── Sources ───────────────────────────────────────────────── */
.sources {
  margin-top: 7px;
  font-size: 0.7rem;
  color: var(--mc-text-dim);
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
  align-items: center;
}
.sources::before { content: '📖'; font-size: 0.8rem; margin-right: 2px; }
.sources span {
  background: var(--mc-panel);
  border: 1px solid var(--mc-cobble);
  padding: 2px 7px;
  font-size: 0.65rem;
  color: var(--mc-text-aqua);
}

/* ── Thinking animation ────────────────────────────────────── */
.thinking {
  display: flex;
  align-items: center;
  gap: 7px;
  padding: 10px 14px;
  background: var(--mc-bot-bg);
  border: var(--pixel) solid var(--mc-border);
  border-top: var(--pixel) solid var(--mc-bot-border);
  box-shadow: 2px 2px 0 var(--mc-border);
}
.thinking .block {
  width: 10px; height: 10px;
  border: 1px solid var(--mc-border);
  animation: mc-bounce 1.1s steps(3) infinite;
}
.thinking .block:nth-child(1) { background: var(--mc-grass); }
.thinking .block:nth-child(2) { background: var(--mc-wood);  animation-delay: 0.18s; }
.thinking .block:nth-child(3) { background: var(--mc-stone); animation-delay: 0.36s; }

@keyframes mc-bounce {
  0%, 80%, 100% { transform: translateY(0);    opacity: 0.5; }
  40%            { transform: translateY(-6px); opacity: 1;   }
}
.thinking .think-label {
  font-family: 'Press Start 2P', monospace;
  font-size: 0.5rem;
  color: var(--mc-text-dim);
  margin-left: 4px;
  animation: mc-pulse 1.1s steps(2) infinite;
}

/* ── Tab strip ─────────────────────────────────────────────── */
.tab-strip {
  display: flex;
  background: var(--mc-obsidian);
  border-top: var(--pixel) solid var(--mc-border);
  border-bottom: var(--pixel) solid var(--mc-border);
  padding: 0 16px;
}

.tab-btn {
  font-family: 'Press Start 2P', monospace;
  font-size: 0.7rem;
  padding: 10px 18px;
  border: none;
  background: none;
  color: var(--mc-text-dim);
  cursor: pointer;
  border-bottom: 3px solid transparent;
  margin-bottom: -1px;
  letter-spacing: 0.05em;
  transition: color 0.1s;
  text-shadow: 1px 1px 0 #000;
}
.tab-btn.active { color: var(--mc-grass-light); border-bottom-color: var(--mc-grass); }
.tab-btn:hover:not(.active) { color: var(--mc-text); }

/* ── Input area ────────────────────────────────────────────── */
#input-area {
  background: var(--mc-panel);
  border-top: var(--pixel) solid var(--mc-cobble);
  padding: 14px 16px;
  padding-bottom: calc(14px + env(safe-area-inset-bottom));
}

.tab-panel { width: 100%; display: none; gap: 10px; align-items: flex-end; }
.tab-panel.active { display: flex; }
.input-wrapper { flex: 1; display: flex; flex-direction: column; }

textarea {
  flex: 1;
  resize: none;
  background: var(--mc-void);
  color: var(--mc-text);
  border: var(--pixel) solid var(--mc-cobble);
  border-bottom: var(--pixel) solid #000;
  border-right: var(--pixel) solid #000;
  padding: 9px 12px;
  font-size: 0.9rem;
  font-family: inherit;
  line-height: 1.5;
  max-height: 160px;
  overflow-y: auto;
  outline: none;
  caret-color: var(--mc-grass-light);
  transition: border-color 0.15s;
}
textarea::placeholder { color: var(--mc-cobble); }
textarea:focus { border-color: var(--mc-grass); box-shadow: 0 0 0 1px var(--mc-grass-dark); }
textarea.invalid { border-color: var(--mc-redstone) !important; }

.field-msg {
  min-height: 1em;
  margin-top: 4px;
  font-family: 'Press Start 2P', monospace;
  font-size: 0.45rem;
}
#error-msg { color: var(--mc-text-red); }

/* ── Minecraft-style button ────────────────────────────────── */
.mc-btn {
  font-family: 'Press Start 2P', monospace;
  font-size: 0.6rem;
  letter-spacing: 0.03em;
  color: #fff;
  text-shadow: 1px 1px 0 rgba(0,0,0,0.7), 2px 2px 0 rgba(0,0,0,0.4);
  background: linear-gradient(to bottom, #919191 0%, #696969 100%);
  border: var(--pixel) solid var(--mc-border);
  box-shadow:
    inset  2px  2px rgba(255,255,255,0.30),
    inset -2px -2px rgba(0,0,0,0.45),
    2px 2px 0 var(--mc-border);
  padding: 11px 18px;
  cursor: pointer;
  white-space: nowrap;
  align-self: flex-end;
  transition: background 0.05s, box-shadow 0.05s;
}
.mc-btn:hover:not(:disabled) {
  background: linear-gradient(to bottom, #8080FF 0%, #5858C8 100%);
  box-shadow:
    inset  2px  2px rgba(255,255,255,0.25),
    inset -2px -2px rgba(0,0,0,0.5),
    2px 2px 0 var(--mc-border);
}
.mc-btn:active:not(:disabled) {
  background: linear-gradient(to bottom, #5858C8 0%, #3030A0 100%);
  box-shadow:
    inset  2px  2px rgba(0,0,0,0.35),
    inset -2px -2px rgba(255,255,255,0.1),
    2px 2px 0 var(--mc-border);
  transform: translate(1px, 1px);
}
.mc-btn:disabled { opacity: 0.45; cursor: not-allowed; }

/* ── Header nav ────────────────────────────────────────────── */
.header-nav {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 10px;
}

.nav-btn {
  font-family: 'Press Start 2P', monospace;
  font-size: 0.55rem;
  color: var(--mc-text-gold);
  background: rgba(0,0,0,0.35);
  border: 1px solid rgba(255,255,255,0.2);
  padding: 6px 10px;
  cursor: pointer;
  text-decoration: none;
  letter-spacing: 0.03em;
  text-shadow: 1px 1px 0 #000;
  transition: background 0.1s, color 0.1s;
  white-space: nowrap;
}
.nav-btn:hover {
  background: rgba(0,0,0,0.55);
  color: var(--mc-text-green);
}

.nav-user {
  font-family: 'Press Start 2P', monospace;
  font-size: 0.52rem;
  color: var(--mc-text-aqua);
  text-shadow: 1px 1px 0 #000;
  white-space: nowrap;
  max-width: 120px;
  overflow: hidden;
  text-overflow: ellipsis;
}

.auth-nav-link {
  margin-left: auto;
  font-size: 0.55rem;
  color: var(--mc-text-gold);
  text-decoration: none;
  text-shadow: 1px 1px 0 #000;
}

/* ── App body layout (with sidebar) ───────────────────────── */
#app-body {
  flex: 1;
  display: flex;
  overflow: hidden;
}

#main-panel {
  flex: 1;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

/* ── Sidebar ────────────────────────────────────────────────── */
#sidebar {
  width: 220px;
  min-width: 220px;
  background: var(--mc-obsidian);
  border-right: var(--pixel) solid var(--mc-border);
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

body.sidebar-hidden #sidebar { display: none; }

.sidebar-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 12px;
  border-bottom: 1px solid var(--mc-border);
  background: var(--mc-panel);
  font-family: 'Press Start 2P', monospace;
  font-size: 0.6rem;
  color: var(--mc-text-gold);
  text-shadow: 1px 1px 0 #000;
  flex-shrink: 0;
}

.mc-btn-small {
  font-family: 'Press Start 2P', monospace;
  font-size: 0.48rem;
  color: #fff;
  text-shadow: 1px 1px 0 rgba(0,0,0,0.7);
  background: linear-gradient(to bottom, #5a8a2d 0%, #3d5e1f 100%);
  border: 1px solid #000;
  box-shadow: inset 1px 1px rgba(255,255,255,0.2), inset -1px -1px rgba(0,0,0,0.4);
  padding: 5px 8px;
  cursor: pointer;
  white-space: nowrap;
}
.mc-btn-small:hover {
  background: linear-gradient(to bottom, #6db034 0%, #4a7228 100%);
}

#session-list {
  flex: 1;
  overflow-y: auto;
  scrollbar-width: thin;
  scrollbar-color: var(--mc-cobble) var(--mc-void);
  padding: 4px 0;
}

.session-item {
  display: flex;
  align-items: center;
  padding: 9px 12px;
  cursor: pointer;
  border-bottom: 1px solid rgba(0,0,0,0.3);
  gap: 6px;
  transition: background 0.1s;
}
.session-item:hover    { background: var(--mc-panel); }
.session-item.active   { background: var(--mc-grass-dark); border-left: 3px solid var(--mc-grass); }

.session-title {
  flex: 1;
  font-size: 0.8rem;
  color: var(--mc-text);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.session-delete {
  flex-shrink: 0;
  background: none;
  border: none;
  color: var(--mc-stone);
  cursor: pointer;
  font-size: 0.7rem;
  padding: 2px 4px;
  opacity: 0;
  transition: opacity 0.1s, color 0.1s;
}
.session-item:hover .session-delete { opacity: 1; }
.session-delete:hover { color: var(--mc-text-red); }

.session-empty {
  padding: 16px 12px;
  font-size: 0.5rem;
  color: var(--mc-stone);
  text-align: center;
  line-height: 1.8;
}

/* ── Auth pages ─────────────────────────────────────────────── */
body.auth-page {
  justify-content: flex-start;
  overflow-y: auto;
  height: auto;
  min-height: 100vh;
}

.auth-container {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 40px 20px;
}

.auth-box {
  background: var(--mc-panel);
  border: var(--pixel) solid var(--mc-border);
  box-shadow: 4px 4px 0 var(--mc-border);
  padding: 32px;
  width: 100%;
  max-width: 400px;
}

.auth-title {
  font-size: 0.75rem;
  color: var(--mc-text-gold);
  text-shadow: 2px 2px 0 #000;
  margin-bottom: 24px;
  text-align: center;
  letter-spacing: 0.05em;
}

.auth-error {
  background: rgba(204,0,0,0.2);
  border: 1px solid var(--mc-redstone);
  color: var(--mc-text-red);
  padding: 8px 12px;
  font-size: 0.7rem;
  margin-bottom: 16px;
}

.auth-form {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.auth-label {
  font-size: 0.45rem;
  color: var(--mc-text-dim);
  letter-spacing: 0.05em;
  margin-bottom: -6px;
}

.auth-input {
  background: var(--mc-void);
  color: var(--mc-text);
  border: var(--pixel) solid var(--mc-cobble);
  border-bottom: var(--pixel) solid #000;
  border-right: var(--pixel) solid #000;
  padding: 10px 12px;
  font-size: 0.9rem;
  font-family: inherit;
  outline: none;
  width: 100%;
  caret-color: var(--mc-grass-light);
}
.auth-input:focus { border-color: var(--mc-grass); }
.auth-input::placeholder { color: var(--mc-cobble); }

.auth-check {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.42rem;
  color: var(--mc-text-dim);
  cursor: pointer;
}

.auth-btn {
  margin-top: 8px;
  width: 100%;
  padding: 13px;
  align-self: auto;
}

.auth-switch {
  margin-top: 20px;
  font-size: 0.42rem;
  color: var(--mc-text-dim);
  text-align: center;
}
.auth-switch a {
  color: var(--mc-text-aqua);
  text-decoration: none;
}
.auth-switch a:hover { color: var(--mc-text-green); }

/* ── Note panel ─────────────────────────────────────────────── */
.note-title-input {
  background: var(--mc-void);
  color: var(--mc-text-gold);
  border: var(--pixel) solid var(--mc-cobble);
  border-bottom: 1px solid var(--mc-panel);
  padding: 7px 12px;
  font-size: 0.8rem;
  font-family: inherit;
  outline: none;
  width: 100%;
  caret-color: var(--mc-grass-light);
}
.note-title-input::placeholder { color: var(--mc-stone); }
.note-title-input:focus { border-color: var(--mc-grass); }

.ok-msg    { color: var(--mc-text-green); }
.error-msg { color: var(--mc-text-red); }

/* ── Mobile responsive ─────────────────────────────────────── */
@media (max-width: 540px) {
  /* Sidebar slides in from the left as a fixed overlay */
  #sidebar {
    position: fixed;
    top: 0; left: 0; bottom: 0;
    width: 75%;
    max-width: 260px;
    z-index: 200;
    transform: translateX(-100%);
    transition: transform 0.2s ease;
  }

  /* On desktop, body.sidebar-hidden sets display:none — override that on mobile
     so the transform approach controls visibility instead */
  body.sidebar-hidden #sidebar {
    display: flex;
    transform: translateX(-100%);
  }

  body.sidebar-open #sidebar {
    transform: translateX(0);
    box-shadow: 6px 0 24px rgba(0, 0, 0, 0.8);
  }

  /* Tap-outside scrim */
  #sidebar-scrim {
    display: none;
    position: fixed;
    inset: 0;
    z-index: 199;
    background: rgba(0, 0, 0, 0.5);
  }
  body.sidebar-open #sidebar-scrim { display: block; }

  .nav-user { display: none; }
  header { padding: 10px 12px; gap: 8px; }
  header .mc-icon { font-size: 1.2rem; }
  header h1 { font-size: 0.7rem; }
  #status-bar { padding: 4px 10px; gap: 8px; font-size: 0.5rem; }
  #status-ready { font-size: 0.38rem; }
  #chat-window { padding: 12px 10px; gap: 10px; }
  .message { max-width: 92%; }
  .bubble { font-size: 0.85rem; padding: 10px 11px; }
  .tab-strip { padding: 0 8px; }
  .tab-btn { font-size: 0.55rem; padding: 12px 14px; }
  #input-area { padding: 10px; padding-bottom: calc(10px + env(safe-area-inset-bottom)); }
  .tab-panel { flex-direction: column; align-items: stretch; gap: 8px; }
  .mc-btn { width: 100%; padding: 14px 18px; align-self: auto; }
  textarea { font-size: 1rem; }
}