/* =========================================================================
   SpriteLab — style.css
   Token desain:
   - Warna   : bg #14161c, panel #1a1d24, panel-2 #20242c, border #2a2f3a,
               text #e7e9ee, text-dim #8b93a3, accent (lime) #b8ff3d,
               accent-2 (magenta) #ff5da2
   - Font    : "Press Start 2P" (judul/pixel), "Inter" (UI), "JetBrains Mono" (data)
   - Layout  : header atas, 3 kolom (tools | canvas | frames+animasi)
   - Signature: checkerboard transparansi + grid pixel + judul bergaya CRT
   ========================================================================= */

:root{
  --bg: #14161c;
  --panel: #1a1d24;
  --panel-2: #20242c;
  --border: #2a2f3a;
  --text: #e7e9ee;
  --text-dim: #8b93a3;
  --accent: #b8ff3d;
  --accent-dim: #7fbf2a;
  --accent-2: #ff5da2;
  --danger: #ff5d5d;
  --radius: 6px;
  --font-display: "Press Start 2P", monospace;
  --font-ui: "Inter", system-ui, sans-serif;
  --font-mono: "JetBrains Mono", monospace;
}

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

html, body{
  height: 100%;
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-ui);
  overflow: hidden;
}

button{
  font-family: inherit;
  cursor: pointer;
}

img.icon{
  width: 16px;
  height: 16px;
  filter: brightness(0) invert(1);
  opacity: 0.85;
  flex-shrink: 0;
}

/* =============================== HEADER ================================ */
.app-header{
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 24px;
  background: linear-gradient(180deg, var(--panel-2), var(--panel));
  border-bottom: 1px solid var(--border);
}

.app-header__brand{
  display: flex;
  align-items: center;
  gap: 14px;
}

.app-header__logo-dot{
  width: 14px;
  height: 14px;
  background: var(--accent);
  box-shadow: 0 0 0 4px rgba(184,255,61,0.12), 0 0 12px rgba(184,255,61,0.6);
  animation: blink 1.6s steps(2, start) infinite;
  flex-shrink: 0;
}

@keyframes blink{
  50% { opacity: 0.25; }
}

.app-header__titles{ line-height: 1.25; }

.app-header__title{
  font-family: var(--font-display);
  font-size: 18px;
  letter-spacing: 1px;
  margin: 0;
  color: var(--text);
  text-shadow: 2px 2px 0 rgba(184,255,61,0.25);
}

.app-header__subtitle{
  margin: 4px 0 0;
  font-size: 11.5px;
  color: var(--text-dim);
  font-family: var(--font-mono);
  letter-spacing: 0.3px;
}

.app-header__credit{
  font-size: 12.5px;
  color: var(--text-dim);
  text-decoration: none;
  border: 1px solid var(--border);
  padding: 6px 12px;
  border-radius: 100px;
  transition: color .15s, border-color .15s, background .15s;
  white-space: nowrap;
}
.app-header__credit:hover{
  color: var(--bg);
  background: var(--accent);
  border-color: var(--accent);
}

/* =============================== SHELL ================================= */
.app-shell{
  height: calc(100vh - 64px - 28px);
  display: grid;
  grid-template-columns: 260px 1fr 270px 220px;
}

.panel{
  background: var(--panel);
  overflow-y: auto;
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 18px;
}
.panel--left{ border-right: 1px solid var(--border); }
.panel--right{ border-left: 1px solid var(--border); }
.panel--anim{ border-left: 1px solid var(--border); }

.panel-section{
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.panel-section--grow{ flex: 1 1 auto; min-height: 120px; }

.panel-section__title{
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 1.2px;
  color: var(--text-dim);
  margin: 0 0 2px;
  font-weight: 600;
}

/* ============================== BUTTONS ================================= */
.tool-btn{
  display: flex;
  align-items: center;
  gap: 8px;
  background: var(--panel-2);
  border: 1px solid var(--border);
  color: var(--text);
  font-size: 12.5px;
  padding: 8px 10px;
  border-radius: var(--radius);
  transition: background .12s, border-color .12s, transform .05s;
  flex: 1;
  justify-content: center;
}
.tool-btn:hover{ border-color: var(--accent-dim); background: #262b35; }
.tool-btn:active{ transform: scale(0.98); }
.tool-btn--wide{ width: 100%; }
.tool-btn--primary{
  background: var(--accent);
  color: #10130a;
  border-color: var(--accent);
  font-weight: 600;
}
.tool-btn--primary:hover{ background: var(--accent-dim); }
.tool-btn--primary img.icon{ filter: none; }

.btn-row{ display: flex; gap: 8px; }

.tool-grid{
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
}
.mode-btn{ flex-direction: column; padding: 12px 6px; gap: 6px; }
.mode-btn span{ font-size: 11px; }
.mode-btn.active{
  border-color: var(--accent);
  background: rgba(184,255,61,0.08);
}
.mode-btn.active img.icon{ filter: none; opacity: 1; }
.mode-btn.active span{ color: var(--accent); }

.toggle-btn.active{
  border-color: var(--accent-2);
  color: var(--accent-2);
}

/* ============================== FIELDS ================================= */
.field-row{
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  font-size: 12px;
  color: var(--text-dim);
}
.field-row--split{ gap: 12px; }
.field-row--split label{
  display: flex;
  align-items: center;
  gap: 6px;
  flex: 1;
}
.field-row input[type="number"]{
  width: 100%;
  background: var(--panel-2);
  border: 1px solid var(--border);
  color: var(--text);
  border-radius: 4px;
  padding: 4px 6px;
  font-family: var(--font-mono);
}
.field-row input[type="color"]{
  width: 42px;
  height: 26px;
  border: 1px solid var(--border);
  border-radius: 4px;
  background: none;
  padding: 0;
}
input[type="range"]{ accent-color: var(--accent); width: 100%; }

.checkbox-row{
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 12.5px;
  color: var(--text-dim);
}
.checkbox-row input{ accent-color: var(--accent); }

.hint-text{
  font-size: 11.5px;
  color: var(--text-dim);
  line-height: 1.5;
  margin: 2px 0 0;
}

.drop-zone{
  border: 1.5px dashed var(--border);
  border-radius: var(--radius);
  padding: 14px 10px;
  text-align: center;
  font-size: 11.5px;
  color: var(--text-dim);
  transition: border-color .15s, color .15s, background .15s;
}
.drop-zone.dragover{
  border-color: var(--accent);
  color: var(--accent);
  background: rgba(184,255,61,0.06);
}

/* ============================== CANVAS AREA ============================= */
.canvas-area{
  display: flex;
  flex-direction: column;
  background: #101218;
  position: relative;
}

.canvas-toolbar{
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 14px;
  font-size: 11.5px;
  color: var(--text-dim);
  border-bottom: 1px solid var(--border);
  font-family: var(--font-mono);
}

.canvas-viewport{
  flex: 1;
  overflow: hidden; /* pan/zoom dikendalikan manual via transform, bukan scroll native */
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  touch-action: none; /* cegah browser ikut menangani gesture 2 jari di area ini */
}

.canvas-stage{
  position: relative;
  image-rendering: pixelated;
  width: 100%;
  max-width: 720px;
  aspect-ratio: 1 / 1; /* fallback sebelum gambar dimuat; diganti via JS sesuai rasio gambar */
  transform-origin: 0 0; /* wajib: acuan matematika pinch-zoom/pan di main.js */
  box-shadow: 0 0 0 1px var(--border), 0 8px 32px rgba(0,0,0,0.45);
}

.canvas-stage canvas{
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  image-rendering: pixelated;
}

#overlayCanvas{
  cursor: crosshair;
  touch-action: none; /* wajib di Android agar gesture gambar tidak men-scroll halaman */
}

/* ============================== FRAME LIST =============================== */
.frame-list{
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
  overflow-y: auto;
  padding-right: 2px;
}

.frame-card{
  background: var(--panel-2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 6px;
  display: flex;
  flex-direction: column;
  gap: 4px;
  cursor: pointer;
  position: relative;
}
.frame-card.selected{ border-color: var(--accent); }
.frame-card.current{ box-shadow: 0 0 0 1px var(--accent-2) inset; }
.frame-card.too-small{ opacity: 0.55; }
.frame-card.too-small .frame-card__meta{ color: var(--danger); }

.frame-card canvas{
  width: 100%;
  aspect-ratio: 1 / 1;
  object-fit: contain;
  image-rendering: pixelated;
  background:
    linear-gradient(45deg, #2a2d33 25%, transparent 25%) 0 0/10px 10px,
    linear-gradient(-45deg, #2a2d33 25%, transparent 25%) 0 0/10px 10px,
    linear-gradient(45deg, transparent 75%, #2a2d33 75%) 0 0/10px 10px,
    linear-gradient(-45deg, transparent 75%, #2a2d33 75%) 0 0/10px 10px,
    #34383f;
}

.frame-card__meta{
  font-size: 10px;
  color: var(--text-dim);
  font-family: var(--font-mono);
  display: flex;
  justify-content: space-between;
}

.frame-card__check{
  position: absolute;
  top: 6px;
  right: 6px;
  width: 16px;
  height: 16px;
  border-radius: 3px;
  border: 1px solid var(--border);
  background: rgba(20,22,28,0.8);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 10px;
  color: var(--accent);
}

/* ============================== ANIMATION =============================== */
.anim-preview{
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  background: var(--panel-2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 10px;
}

#animCanvas{
  image-rendering: pixelated;
  background:
    linear-gradient(45deg, #2a2d33 25%, transparent 25%) 0 0/12px 12px,
    linear-gradient(-45deg, #2a2d33 25%, transparent 25%) 0 0/12px 12px,
    linear-gradient(45deg, transparent 75%, #2a2d33 75%) 0 0/12px 12px,
    linear-gradient(-45deg, transparent 75%, #2a2d33 75%) 0 0/12px 12px,
    #34383f;
}

.anim-frame-label{
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text-dim);
}

.anim-controls .tool-btn{ flex: 1; }

/* ============================== FOOTER =================================== */
.app-footer{
  height: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 10.5px;
  color: var(--text-dim);
  border-top: 1px solid var(--border);
  background: var(--panel);
}

/* ============================== SCROLLBARS =============================== */
::-webkit-scrollbar{ width: 10px; height: 10px; }
::-webkit-scrollbar-track{ background: transparent; }
::-webkit-scrollbar-thumb{ background: var(--border); border-radius: 6px; }
::-webkit-scrollbar-thumb:hover{ background: var(--accent-dim); }

/* ============================== MOBILE TAB BAR ============================= */
/* Tersembunyi di desktop; hanya aktif via media query di bawah */
.mobile-tabs{ display: none; }

.mobile-tab-btn{
  flex: 1;
  background: none;
  border: none;
  color: var(--text-dim);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 3px;
  font-size: 10.5px;
  font-family: var(--font-ui);
  padding: 6px 0;
}
.mobile-tab-btn img.icon{ width: 18px; height: 18px; }
.mobile-tab-btn.active{ color: var(--accent); }
.mobile-tab-btn.active img.icon{ filter: none; opacity: 1; }

/* ============================== RESPONSIVE (ANDROID / MOBILE) ============== */
@media (max-width: 900px){
  html, body{ overflow: hidden; }

  .app-header{ padding: 0 12px; height: 58px; }
  .app-header__title{ font-size: 15px; }
  .app-header__subtitle{ font-size: 10px; }
  .app-header__credit{ font-size: 11px; padding: 5px 10px; }

  .app-shell{
    display: flex;
    flex-direction: column;
    height: calc(100vh - 58px - 24px - 58px); /* header + footer + tabbar */
  }

  /* Hanya satu panel yang tampil sekaligus, dikendalikan lewat tab bar */
  .panel, .canvas-area{ display: none; flex: 1 1 auto; min-height: 0; }
  .panel.mobile-active, .canvas-area.mobile-active{ display: flex; }

  .panel--left, .panel--right{ border: none; }
  .panel{ padding: 12px; }

  .canvas-viewport{ padding: 12px; }
  .canvas-stage{ max-width: 100%; }

  .tool-btn{ min-height: 44px; font-size: 13px; }
  .mode-btn{ padding: 10px 4px; }
  .frame-list{ grid-template-columns: 1fr 1fr 1fr; }

  .app-footer{ font-size: 9px; height: 24px; padding: 0 8px; text-align: center; }

  .mobile-tabs{
    display: flex;
    height: 58px;
    background: var(--panel-2);
    border-top: 1px solid var(--border);
    padding-bottom: env(safe-area-inset-bottom, 0);
    flex-shrink: 0;
  }
}

@media (max-width: 420px){
  .app-header__subtitle{ display: none; }
  .frame-list{ grid-template-columns: 1fr 1fr; }
}