/* ── Variables — mirror schedule.css ────────────────────────────────── */

:root {
  --cirms-blue:  #001f4f;
  --background:  #e2e8f5;
  --text:        #1e293b;
  --muted:       #94a3b8;
  --high-bg:     #ffffde;
  --high-border: #b8940a;
  --high-text:   #907823;
}

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

body {
  font-family: 'DM Sans', sans-serif;
  background: var(--background);
  color: var(--text);
  min-height: 100vh;
}

/* ── Header — identical to schedule ─────────────────────────────────── */

.conf-header {
  background: var(--cirms-blue);
  color: #fff;
  padding: 1rem 0 1.4rem;
}
.conf-header h1 {
  font-size: 2.2rem;
  font-weight: 600;
  letter-spacing: -0.03em;
  margin: 0;
}
.conf-header .conf-meta {
  color: var(--muted);
  font-size: 1rem;
  margin: 0;
}

.back-link {
    display: inline-block;
    font-size: 0.82rem;
    font-weight: 500;
    color: rgba(255,255,255,0.45);
    text-decoration: none;
    margin-bottom: 0.5rem;
    transition: color 0.15s;
}

.back-link:hover {
    color: rgba(255,255,255,0.85);
}

/* ── Layout ──────────────────────────────────────────────────────────── */

.container {
  max-width: 900px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

.main-content { padding: 2rem 0 3.5rem; }

/* ── Instruction banner ──────────────────────────────────────────────── */

.instruction {
  background: #f1f5fb;
  border-left: 4px solid var(--cirms-blue);
  border-radius: 0 8px 8px 0;
  padding: 1rem 1.25rem;
  margin-bottom: 2rem;
  font-size: 0.95rem;
  line-height: 1.65;
  color: #334155;
}
.instruction strong { color: var(--cirms-blue); }

/* ── Sentence form card ──────────────────────────────────────────────── */

.need-form {
  background: #fff;
  border-radius: 10px;
  padding: 1.75rem 2rem 2.25rem;
  box-shadow: 0 2px 16px rgba(0,0,0,0.09);
  margin-bottom: 2rem;
}

/* Vertical form: connective text + full-width input, stacked */
.sentence-builder {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  font-size: 1.12rem;
  color: #475569;
  font-weight: 400;
}

.sentence-frag { line-height: 1.4; }

.blank-input {
  display: block;
  width: 100%;
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--high-text);
  background: var(--high-bg);
  border: 1.5px solid var(--high-border);
  border-radius: 5px;
  padding: 8px 14px;
  outline: none;
  transition: border-color 0.15s, box-shadow 0.15s;
}
.blank-input:focus {
  border-color: var(--cirms-blue);
  box-shadow: 0 0 0 3px rgba(0,31,79,0.13);
}
.blank-input::placeholder {
  color: var(--high-border);
  opacity: 0.65;
  font-weight: 400;
  font-style: italic;
}

/* ── Slide preview ───────────────────────────────────────────────────── */

.preview-label {
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.09em;
  color: var(--muted);
  margin-bottom: 0.6rem;
}
.preview-wrapper {
  border-radius: 8px;
  overflow: hidden;
  box-shadow: 0 4px 28px rgba(0,0,0,0.18);
  background: #fff;
  margin-bottom: 1.75rem;
  line-height: 0; /* kill baseline gap under canvas */
}
#slidePreview {
  display: block;
  width: 100%;
  height: auto;
}

/* ── Download button ─────────────────────────────────────────────────── */

.btn-download {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: var(--cirms-blue);
  color: #fff;
  font-family: 'DM Sans', sans-serif;
  font-size: 1rem;
  font-weight: 600;
  padding: 0.7rem 1.75rem;
  border: none;
  border-radius: 7px;
  cursor: pointer;
  letter-spacing: -0.01em;
  transition: background 0.15s, transform 0.1s;
}
.btn-download:hover  { background: #002d70; }
.btn-download:active { transform: scale(0.98); }

.download-note {
  font-size: 0.82rem;
  color: var(--muted);
  margin-top: 0.55rem;
  line-height: 1.5;
}

/* ── Punctuation wrapper ─────────────────────────────────────────────── */

.input-punct-wrap {
  display: flex;
  align-items: center;
  gap: 2px;
}
.input-wrap {
  position: relative;
  flex: 1;
}
.input-wrap .blank-input {
  width: 100%;
}
.char-countdown {
  position: absolute;
  top: -1.6em;
  right: 2px;
  font-size: 0.78rem;
  font-family: 'DM Mono', monospace;
  color: var(--muted);
  opacity: 0;
  transition: opacity 0.2s, color 0.2s;
  pointer-events: none;
}
.char-countdown.visible        { opacity: 1; }
.char-countdown.low            { color: #f59e0b; }
.char-countdown.critical       { color: #e11d48; font-weight: 600; }
.punct { font-size: 1.4rem; font-weight: 400; color: #475569; line-height: 1; padding-bottom: 2px; flex-shrink: 0; }
.punct-invisible { visibility: hidden; }

/* ── Mobile ──────────────────────────────────────────────────────────── */

@media (max-width: 600px) {
  .conf-header h1       { font-size: 1.5rem; }
  .conf-header .conf-meta { font-size: 0.88rem; }
  .container            { padding: 0 1rem; }
  .main-content         { padding: 1.25rem 0 2.5rem; }
  .instruction          { font-size: 0.88rem; padding: 0.85rem 1rem; margin-bottom: 1.25rem; }
  .need-form            { padding: 1.25rem 1rem 1rem; margin-bottom: 1.25rem; }
  .sentence-builder     { font-size: 0.95rem; gap: 0.4rem; }
  .blank-input          { font-size: 0.95rem; padding: 7px 10px; }
  .punct                { font-size: 1.2rem; }
  .preview-label        { font-size: 0.68rem; }
  .btn-download         { font-size: 0.92rem; padding: 0.65rem 1.25rem; width: 100%; justify-content: center; }
  .download-note        { font-size: 0.78rem; }
}