/* =========================================================================
   Bangla Text Analyzer — editorial / warm-paper aesthetic
   ========================================================================= */

:root {
  --paper: #f4efe6;
  --paper-deep: #ebe3d5;
  --ink: #1c1a17;
  --ink-soft: #5b554c;
  --accent: #c2410c;        /* burnt orange */
  --accent-deep: #9a3412;
  --line: #d8cfbe;
  --good: #3f6f4f;
  --bad: #9a3412;
  --neutral: #6b6457;
  --radius: 14px;
  --shadow: 0 24px 60px -28px rgba(40, 30, 15, 0.4);
}

* { box-sizing: border-box; }

html, body { margin: 0; padding: 0; }

body {
  background:
    radial-gradient(circle at 12% 8%, #fbf7ee 0%, transparent 45%),
    radial-gradient(circle at 90% 95%, #efe6d6 0%, transparent 50%),
    var(--paper);
  color: var(--ink);
  font-family: "Hind Siliguri", "Noto Serif Bengali", system-ui, sans-serif;
  min-height: 100vh;
  position: relative;
  overflow-x: hidden;
}

/* subtle film-grain overlay for texture */
.grain {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  opacity: 0.04;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='120' height='120'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='3'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

/* ---------------- Masthead ---------------- */
.masthead {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: center;
  gap: 1.1rem;
  padding: 2.4rem clamp(1.2rem, 5vw, 4rem) 1.4rem;
  border-bottom: 1px solid var(--line);
}

.masthead__mark {
  font-family: "Noto Serif Bengali", serif;
  font-size: 2.5rem;
  font-weight: 600;
  width: 64px; height: 64px;
  display: grid; place-items: center;
  background: var(--ink);
  color: var(--paper);
  border-radius: 50%;
  flex-shrink: 0;
}

.masthead h1 {
  font-family: "Fraunces", serif;
  font-weight: 900;
  font-size: clamp(1.7rem, 4vw, 2.6rem);
  letter-spacing: -0.02em;
  margin: 0;
  line-height: 1;
}

.masthead__sub {
  margin: 0.45rem 0 0;
  color: var(--ink-soft);
  font-size: 0.92rem;
  letter-spacing: 0.01em;
}

/* ---------------- Layout grid ---------------- */
.layout {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: 3.2rem;
  padding: 1.8rem clamp(1.5rem, 6vw, 5rem) 2rem;
  max-width: 1320px;
  margin: 0 auto;
}

.panel {
  background: rgba(255, 253, 248, 0.7);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.4rem;
  backdrop-filter: blur(4px);
}

.panel--input { grid-column: 1; }
.panel--control {
  grid-column: 2;
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow);
}
.panel--output { grid-column: 1; }

/* ---------------- Labels ---------------- */
.field-label {
  display: block;
  font-family: "Fraunces", serif;
  font-weight: 600;
  font-size: 1.05rem;
  margin-bottom: 0.8rem;
}
.field-label span {
  font-family: "Hind Siliguri", sans-serif;
  font-weight: 400;
  font-size: 0.78rem;
  color: var(--ink-soft);
  margin-left: 0.4rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

/* ---------------- Text box + drop zone ---------------- */
.drop-zone {
  position: relative;
  border: 1.5px dashed var(--line);
  border-radius: 10px;
  transition: border-color 0.2s, background 0.2s;
}
.drop-zone.dragover {
  border-color: var(--accent);
  background: rgba(194, 65, 12, 0.05);
}
.drop-zone.dragover .drop-zone__overlay { opacity: 1; }

textarea#text-input {
  width: 100%;
  min-height: 260px;
  resize: vertical;
  border: none;
  background: transparent;
  padding: 1rem 1.1rem;
  font-family: "Hind Siliguri", "Noto Serif Bengali", sans-serif;
  font-size: 1.08rem;
  line-height: 1.7;
  color: var(--ink);
  outline: none;
}
textarea#text-input::placeholder { color: #a89e8c; }

.drop-zone__overlay {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.2s;
  background: rgba(244, 239, 230, 0.85);
  border-radius: 10px;
  font-weight: 600;
  color: var(--accent-deep);
}

.input-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 0.9rem;
  flex-wrap: wrap;
  gap: 0.6rem;
}
#char-count { font-size: 0.82rem; color: var(--ink-soft); }

.file-row { display: flex; align-items: center; gap: 0.6rem; }
.file-name { font-size: 0.8rem; color: var(--accent-deep); max-width: 160px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

.ghost-btn {
  border: 1px solid var(--ink);
  background: transparent;
  color: var(--ink);
  padding: 0.4rem 0.9rem;
  border-radius: 999px;
  font-family: inherit;
  font-size: 0.82rem;
  cursor: pointer;
  transition: background 0.15s, color 0.15s;
}
.ghost-btn:hover { background: var(--ink); color: var(--paper); }

/* ---------------- Select ---------------- */
.select-wrap { position: relative; }
.select-wrap::after {
  content: "▾";
  position: absolute;
  right: 1rem; top: 50%;
  transform: translateY(-50%);
  pointer-events: none;
  color: var(--accent);
}
#task-select {
  width: 100%;
  appearance: none;
  -webkit-appearance: none;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--paper);
  padding: 0.85rem 2.2rem 0.85rem 1rem;
  font-family: inherit;
  font-size: 0.98rem;
  color: var(--ink);
  cursor: pointer;
}
#task-select:focus { outline: 2px solid var(--accent); outline-offset: 1px; }

/* ---------------- Run button ---------------- */
.run-btn {
  margin-top: 1.1rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  border: none;
  background: var(--accent);
  color: #fff;
  padding: 0.95rem 1.2rem;
  border-radius: 10px;
  font-family: "Fraunces", serif;
  font-weight: 600;
  font-size: 1.1rem;
  cursor: pointer;
  transition: transform 0.12s, background 0.2s;
}
.run-btn:hover { background: var(--accent-deep); transform: translateY(-2px); }
.run-btn:active { transform: translateY(0); }
.run-btn:disabled { opacity: 0.6; cursor: progress; transform: none; }
.run-btn__arrow { font-family: sans-serif; opacity: 0.85; }

.hint { font-size: 0.78rem; color: var(--ink-soft); margin: 0.9rem 0 0; }

/* ---------------- Output ---------------- */
.output-head { display: flex; align-items: center; gap: 0.6rem; margin-bottom: 1rem; }
.output-head .field-label { margin: 0; }
.output-head__dot {
  width: 10px; height: 10px; border-radius: 50%;
  background: var(--line);
}
.output-head__dot.live { background: var(--accent); box-shadow: 0 0 0 4px rgba(194,65,12,0.15); }

.output-body { font-size: 1rem; line-height: 1.7; }
.output-body--empty { color: var(--ink-soft); font-style: italic; }

.result-card { animation: rise 0.4s ease both; }
@keyframes rise { from { opacity: 0; transform: translateY(10px); } to { opacity: 1; transform: none; } }

.result-card__top {
  display: flex;
  align-items: baseline;
  gap: 0.9rem;
  flex-wrap: wrap;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--line);
  margin-bottom: 1rem;
}
.result-label {
  font-family: "Fraunces", serif;
  font-weight: 900;
  font-size: clamp(1.6rem, 4vw, 2.3rem);
  letter-spacing: -0.02em;
  line-height: 1.05;
}
.result-label.is-good { color: var(--good); }
.result-label.is-bad  { color: var(--bad); }
.result-task { color: var(--ink-soft); font-size: 0.9rem; }

.confidence { margin: 0.4rem 0 1.1rem; }
.confidence__bar {
  height: 10px;
  background: var(--paper-deep);
  border-radius: 999px;
  overflow: hidden;
}
.confidence__fill {
  height: 100%;
  background: linear-gradient(90deg, var(--accent), var(--accent-deep));
  border-radius: 999px;
  width: 0;
  transition: width 0.7s cubic-bezier(.2,.8,.2,1);
}
.confidence__num { font-size: 0.85rem; color: var(--ink-soft); margin-top: 0.4rem; }

.details-grid { display: grid; gap: 0.5rem; margin-top: 0.4rem; }
.detail-row {
  display: flex;
  justify-content: space-between;
  font-size: 0.9rem;
  padding: 0.45rem 0.7rem;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 8px;
}
.detail-row .k { color: var(--ink-soft); }
.detail-row .v { font-weight: 600; }

.error-box {
  color: var(--bad);
  background: rgba(154, 52, 18, 0.07);
  border: 1px solid rgba(154, 52, 18, 0.3);
  border-radius: 8px;
  padding: 0.9rem 1.1rem;
}

.spinner {
  display: inline-block;
  width: 18px; height: 18px;
  border: 2.5px solid var(--line);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
  vertical-align: middle;
  margin-right: 0.6rem;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ---------------- Footer ---------------- */
.footer {
  position: relative;
  z-index: 1;
  text-align: center;
  padding: 1.6rem;
  color: var(--ink-soft);
  font-size: 0.8rem;
  border-top: 1px solid var(--line);
}

/* ---------------- Responsive ---------------- */
@media (max-width: 820px) {
  .layout { grid-template-columns: 1fr; }
  .panel--input, .panel--control, .panel--output { grid-column: 1; }
}