/* =========================================================
   Base / Mobile-Safe Defaults
   ========================================================= */
:root {
  --bg:#0f1115;
  --card:#171a21;
  --text:#ffecd9;
  --muted:#9aa3b2;
  --accent:#6ea8fe;
  --border:#3e3eff;
}

* { box-sizing: border-box; -webkit-tap-highlight-color: transparent; }
html, body { height: 100%; margin-bottom: 50px; overscroll-behavior: none; }
body {
  background: var(--bg);
  color: var(--text);
  font: 16px/1.5 system-ui, Segoe UI, Roboto, Arial, sans-serif;
  -webkit-text-size-adjust: 100%;
  overflow-x: hidden;
  padding: 24px;
}
img, a, button { touch-action: manipulation; }
body { padding-bottom: env(safe-area-inset-bottom); }  /* notch-safe */

/* Fill safe viewport for overlays */
.main, #ssOverlay, #loadingOverlay {
  min-height: 100svh;  /* mobile-friendly */
  min-height: 100vh;
}

/* =========================================================
   Typography / Cards / Layout
   ========================================================= */
header h1 { margin: 0 auto 0 auto; text-transform: uppercase; color: #ffecd9; }
header p  { margin: 0 0 16px; color: var(--muted); }

.card {
  padding: 16px;
  border-radius: 16px;
  text-align: center;
}

.row { display: flex; flex-direction: column; gap: 8px; margin-bottom: 0px; }
.row.inline { flex-direction: row; align-items: center; gap: 12px; }

/* =========================================================
   Forms / Buttons
   ========================================================= */
textarea, input, select, button {
  padding: 10px 20px 10px 20px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: #0e1117;
  color: var(--text);
  min-height: 50px;
  font-size: 24px;
  line-height: 20px;
}

button {
  background: var(--accent);
  border: none;
  color: #05122b;
  font-weight: 700;
  cursor: pointer;
  padding: 10px 14px;
}

.msg { margin-top: 10px; color: #8fda89; }

/* Icon-style file buttons */
.file-buttons { display: flex; gap: 16px; margin-bottom: 1rem; }

.icon-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 100px; height: 100px;
  border-radius: 50px;
  padding: 10px;
  border: 5px solid #999;
  background: #ffecd9;
  cursor: pointer;
  transition: transform .15s ease, box-shadow .15s ease;
  margin: 10px auto 10px auto;
}
.icon-btn:hover { transform: translateY(-1px); box-shadow: 0 6px 16px rgba(0,0,0,.25); }
.icon-btn img { width: 50px; height: 50px; pointer-events: none; }

/* =========================================================
   Gallery Grid
   ========================================================= */
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: 12px;
}
.tile { display: block; border-radius: 14px; overflow: hidden; border: 1px solid #262b36; background:#0e1117; }
.tile img { display: block; width: 100%; height: 100%; object-fit: cover; }

/* =========================================================
   Loading Overlay
   ========================================================= */
#loadingOverlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(15,17,21,.95) url("kassike.png") no-repeat center center / cover;
  color: #fff;
  z-index: 99999;
  font-size: 1.4rem;
  font-weight: 600;
  text-align: center;
  display: flex;
  justify-content: flex-start;  /* align top vertically */
  align-items: center;          /* center horizontally */
  padding-top: 25vh;            /* offset downward */
  flex-direction: column;       /* stack elements vertically */
}
#loadingOverlay .counter { font-size: 2rem; margin-top: .2rem; margin-left: 10px; }

/* =========================================================
   Preview Area (always visible)
   ========================================================= */
#previewCard { gap: 12px; }

.preview-box {
  position: relative;
  width: 100%;
  min-height: 20vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: #0b0e14 url('landscape-icon.svg') center center no-repeat;
  background-size: 200px auto;   /* placeholder size */
  border: 2px dashed #3e3eff;
  border-radius: 8px;
  overflow: hidden;
}
.preview-box img {
  max-width: 100%;
  max-height: 50vh;
  object-fit: contain;
  image-orientation: from-image;
  transition: transform .2s ease;
}
#rotateLeftBtn, #rotateRightBtn {
  font-size: 50px;
  width: 100%;
}

.preview-buttons { gap: 8px; margin-top: 8px; text-align: center; }
.preview-buttons button,
#generateBtn {
  padding: 10px 14px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: #0e1117;
  color: var(--text);
  cursor: pointer;
  width: 90%;
  font-size: 24px;
  margin-borom: 50px;
}
.preview-buttons button:hover,
#generateBtn:hover { background: #151a22; }



/* =========================================================
   Slideshow Overlay + Effects
   ========================================================= */
#ssOverlay {
  display: none;
  position: fixed; inset: 0;
  background: #000;
  z-index: 99999;
  overflow: hidden;
}
#ssOverlay img {
  position: absolute; inset: 0;
  width: 100%; height: 100%;
  object-fit: contain; /* change to 'cover' for edge-to-edge */
  opacity: 0;
  transition: opacity 800ms ease; /* sync with JS XFADE */
}
#ssOverlay img.show { opacity: 1; }

/* Effects switch via data-effect on #ssOverlay */
#ssOverlay[data-effect="fade"] img { /* opacity transition handles this */ }

/* Slide (left/right) */
#ssOverlay[data-effect="slide"] img {
  transform: translateX(40px);
  transition: opacity 800ms ease, transform 800ms ease;
}
#ssOverlay[data-effect="slide"] img.show { transform: translateX(0); }
#ssOverlay[data-effect="slide"] img:not(.show) { transform: translateX(-40px); }

/* Slide Up / Down */
#ssOverlay[data-effect="slide-up"] img {
  transform: translateY(40px);
  transition: opacity 800ms ease, transform 800ms ease;
}
#ssOverlay[data-effect="slide-up"] img.show { transform: translateY(0); }
#ssOverlay[data-effect="slide-up"] img:not(.show) { transform: translateY(-40px); }

/* Zoom */
#ssOverlay[data-effect="zoom"] img {
  transform: scale(1.05);
  transition: opacity 800ms ease, transform 800ms ease;
}
#ssOverlay[data-effect="zoom"] img.show { transform: scale(1); }
#ssOverlay[data-effect="zoom"] img:not(.show) { transform: scale(1.1); }

/* Ken Burns (slow pan/zoom) */
@keyframes kenburnsIn {
  0% { transform: scale(1.1) translate(1%, 1%); }
  100% { transform: scale(1.0) translate(0, 0); }
}
@keyframes kenburnsOut {
  0% { transform: scale(1.0) translate(0, 0); }
  100% { transform: scale(1.05) translate(-1%, -1%); }
}
#ssOverlay[data-effect="kenburns"] img {
  opacity: 0;
  transform: scale(1.05);
}
#ssOverlay[data-effect="kenburns"] img.show {
  opacity: 1;
  animation: kenburnsIn 3.5s ease forwards;
}
#ssOverlay[data-effect="kenburns"] img:not(.show) {
  animation: kenburnsOut 3.5s ease forwards;
}

/* No effect */
#ssOverlay[data-effect="none"] img {
  transition: opacity 0.001s linear;
}

/* =========================================================
   Top Navigation (light helper)
   ========================================================= */
.topnav { display: flex; gap: 12px; align-items: center; margin-bottom: 12px; }
.topnav a { color: var(--accent); text-decoration: none; }


/* Two-panel fullscreen overlay */
#ssOverlay.two-col { display:none; position:fixed; inset:0; background:#000; z-index:99999; }

#ssOverlay.two-col { display:none; } /* default hidden; JS shows it */
#ssOverlay.two-col .ss-left,
#ssOverlay.two-col .ss-right { height:100%; }

#ssOverlay.two-col { display:flex; }
#ssOverlay.two-col .ss-left { flex: 1 1 68%; position:relative; overflow:hidden; }
#ssOverlay.two-col .ss-right {
  flex: 0 0 32%;
  max-width: 520px;
  background: #0f1115;
  color: #e6e8ee;
  border-left: 1px solid #2a2f3a;
  padding: 20px;
  overflow:auto;
}

#ssOverlay.two-col .ss-right h2 { margin:0 0 8px; }
#ssOverlay.two-col .ss-right h3 { margin:16px 0 6px; color:#9aa3b2; font-weight:600; }
#ssOverlay.two-col .ss-right ol, 
#ssOverlay.two-col .ss-right ul { margin:0 0 12px 18px; }
#ssOverlay.two-col .ss-left img {
  position:absolute; inset:0;
  width:100%; height:100%;
  object-fit:contain;  /* keep full image visible */
  opacity:0; transition:opacity 800ms ease;
}
#ssOverlay.two-col .ss-left img.show { opacity:1; }

/* Reuse existing effects by targeting .ss-left img */
#ssOverlay.two-col[data-effect="slide"] .ss-left img {
  transform:translateX(40px);
  transition:opacity 800ms ease, transform 800ms ease;
}
#ssOverlay.two-col[data-effect="slide"] .ss-left img.show { transform:translateX(0); }
#ssOverlay.two-col[data-effect="slide"] .ss-left img:not(.show) { transform:translateX(-40px); }

#ssOverlay.two-col[data-effect="slide-up"] .ss-left img {
  transform:translateY(40px);
  transition:opacity 800ms ease, transform 800ms ease;
}
#ssOverlay.two-col[data-effect="slide-up"] .ss-left img.show { transform:translateY(0); }
#ssOverlay.two-col[data-effect="slide-up"] .ss-left img:not(.show) { transform:translateY(-40px); }

#ssOverlay.two-col[data-effect="zoom"] .ss-left img {
  transform:scale(1.05);
  transition:opacity 800ms ease, transform 800ms ease;
}
#ssOverlay.two-col[data-effect="zoom"] .ss-left img.show { transform:scale(1); }

/* Responsive: stack on small screens */
@media (max-width: 900px) {
  #ssOverlay.two-col { flex-direction:column; }
  #ssOverlay.two-col .ss-right { flex:0 0 40%; max-width:none; border-left:none; border-top:1px solid #2a2f3a; }
  #ssOverlay.two-col .ss-left  { flex:1 1 60%; }
}