/* Teleprompter — upload + view (align landing with index.php / NextGenKnow) */
:root {
  --nk-bg: #0f172a;
  --nk-surface: #1e293b;
  --nk-card: #334155;
  --nk-card-hover: #475569;
  --nk-text: #f1f5f9;
  --nk-text-muted: #94a3b8;
  --nk-accent: #38bdf8;
  --nk-accent-hover: #7dd3fc;
  --nk-max: 1000px;
  --nk-radius: 12px;
  --nk-radius-sm: 8px;
  --nk-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.4);
  --nk-font: "DM Sans", system-ui, sans-serif;
  --tp-bg: #0f172a;
  --tp-surface: #1e293b;
  --tp-text: #f1f5f9;
  --tp-muted: #94a3b8;
  --tp-accent: #38bdf8;
  --tp-font: "DM Sans", system-ui, sans-serif;
  --tp-font-size: clamp(1.75rem, 4vw, 3rem);
}

html[data-theme="light"] {
  --nk-bg: #f8fafc;
  --nk-surface: #fff;
  --nk-card: #dbeafe;
  --nk-card-hover: #bfdbfe;
  --nk-text: #0f172a;
  --nk-text-muted: #64748b;
  --nk-accent: #0284c7;
  --nk-accent-hover: #0369a1;
  --nk-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.12);
  --tp-bg: #f8fafc;
  --tp-surface: #fff;
  --tp-text: #0f172a;
  --tp-muted: #64748b;
  --tp-accent: #0284c7;
}

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

body.tp-upload-page,
body.tp-view-page {
  margin: 0;
  min-height: 100vh;
  font-family: var(--nk-font);
  background: var(--nk-bg);
  color: var(--nk-text);
  -webkit-font-smoothing: antialiased;
}

/* Landing — match index.php */
body.nk-tp-page {
  background: var(--nk-bg);
  color: var(--nk-text);
}

.tp-nk-main.nk-main {
  max-width: var(--nk-max);
  margin: 0 auto;
  padding: 0 1rem 2rem;
  text-align: center;
}

/* Header row: back | title | theme — matches index feel, centered block */
.tp-landing-header {
  width: 100%;
  max-width: var(--nk-max);
  margin: 0 auto;
}

.tp-tp-header-row.nk-hero-title-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto minmax(0, 1fr);
  align-items: center;
  gap: 0.75rem;
  width: 100%;
  padding: 2rem 0 0.5rem;
}

.tp-tp-header-row .tp-back-top {
  justify-self: start;
  text-align: left;
}

.tp-tp-header-row .tp-page-title {
  justify-self: center;
  grid-column: 2;
}

.tp-tp-header-row .tp-nk-theme {
  justify-self: end;
  grid-column: 3;
}

.tp-page-title {
  margin: 0;
  font-size: clamp(1.5rem, 4vw, 2rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  color: var(--nk-text);
}

.tp-tagline.nk-hero-tagline {
  margin: 0 0 1.5rem;
  font-size: 1.05rem;
  color: var(--nk-text-muted);
  line-height: 1.5;
  text-align: center;
  max-width: 640px;
  margin-left: auto;
  margin-right: auto;
}

.nk-theme-toggle.tp-nk-theme {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.25rem;
  height: 2.25rem;
  padding: 0;
  font-size: 1.25rem;
  border-radius: var(--nk-radius-sm);
  cursor: pointer;
  color: var(--nk-text-muted);
  background: var(--nk-surface);
  border: 1px solid rgba(255, 255, 255, 0.1);
  transition: color 0.2s, background 0.2s, border-color 0.2s;
}

html[data-theme="light"] .nk-theme-toggle.tp-nk-theme {
  border-color: rgba(0, 0, 0, 0.1);
}

.nk-theme-toggle.tp-nk-theme:hover {
  color: var(--nk-text);
}

.tp-options {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
  width: 100%;
  max-width: var(--nk-max);
  margin: 0 auto;
  text-align: left;
}

@media (min-width: 900px) {
  .tp-options {
    grid-template-columns: 1fr 1fr;
    gap: 1.25rem;
    align-items: start;
  }
}

.nk-card.tp-option-card {
  display: block;
  padding: 1.25rem;
  background: var(--nk-card);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--nk-radius);
  text-decoration: none;
  color: inherit;
  text-align: left;
  transition: transform 0.2s, box-shadow 0.2s, border-color 0.2s;
}

html[data-theme="light"] .nk-card.tp-option-card {
  border-color: rgba(0, 0, 0, 0.08);
}

.nk-card.tp-option-card:hover {
  border-color: var(--nk-accent);
  box-shadow: var(--nk-shadow);
}

.tp-option-title {
  margin: 0 0 0.5rem;
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--nk-text);
}

.tp-option-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 1.5rem;
  height: 1.5rem;
  margin-right: 0.5rem;
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--nk-bg);
  background: var(--nk-accent);
  border-radius: 50%;
}

html[data-theme="light"] .tp-option-num {
  color: #fff;
}

.tp-option-desc {
  margin: 0 0 1rem;
  font-size: 0.9rem;
  color: var(--nk-text-muted);
  line-height: 1.45;
}

.tp-paste-form,
.tp-upload-form.tp-upload-form {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  text-align: left;
}

.tp-form-actions {
  text-align: left;
}

.tp-sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* Center the fixed-size script box on the page */
.tp-textarea-wrap {
  width: 100%;
  display: flex;
  justify-content: center;
  text-align: left;
}

.tp-textarea {
  width: 100%;
  min-height: 220px;
  padding: 0.85rem 1rem;
  font-size: 0.95rem;
  font-family: inherit;
  line-height: 1.5;
  color: var(--nk-text);
  background: var(--nk-surface);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--nk-radius-sm);
  resize: vertical;
  white-space: pre-wrap;
  word-wrap: break-word;
  text-align: left;
}

/* Sleek script box — 500×400 (scales down on narrow viewports) */
.tp-textarea.tp-textarea-sleek {
  width: 500px;
  max-width: 100%;
  height: 400px;
  min-height: 280px;
  padding: 1rem 1.1rem;
  font-size: 0.95rem;
  line-height: 1.55;
  border-radius: var(--nk-radius);
  border: 1px solid rgba(255, 255, 255, 0.14);
  background:
    linear-gradient(165deg, rgba(255, 255, 255, 0.04) 0%, transparent 45%),
    var(--nk-surface);
  box-shadow:
    0 0 0 1px rgba(0, 0, 0, 0.2),
    0 4px 24px rgba(0, 0, 0, 0.25),
    inset 0 1px 0 rgba(255, 255, 255, 0.06);
  transition: border-color 0.2s, box-shadow 0.2s;
}

html[data-theme="light"] .tp-textarea.tp-textarea-sleek {
  border-color: rgba(0, 0, 0, 0.1);
  background:
    linear-gradient(165deg, rgba(255, 255, 255, 0.9) 0%, var(--nk-surface) 100%);
  box-shadow:
    0 0 0 1px rgba(0, 0, 0, 0.06),
    0 8px 30px rgba(15, 23, 42, 0.08),
    inset 0 1px 0 rgba(255, 255, 255, 0.8);
}

html[data-theme="light"] .tp-textarea {
  border-color: rgba(0, 0, 0, 0.1);
}

.tp-textarea:focus {
  outline: none;
  border-color: var(--nk-accent);
  box-shadow: 0 0 0 3px rgba(56, 189, 248, 0.2);
}

.tp-textarea.tp-textarea-sleek:focus {
  box-shadow:
    0 0 0 3px rgba(56, 189, 248, 0.25),
    0 8px 32px rgba(56, 189, 248, 0.12),
    inset 0 1px 0 rgba(255, 255, 255, 0.08);
}

html[data-theme="light"] .tp-textarea:focus {
  box-shadow: 0 0 0 3px rgba(2, 132, 199, 0.2);
}

html[data-theme="light"] .tp-textarea.tp-textarea-sleek:focus {
  box-shadow:
    0 0 0 3px rgba(2, 132, 199, 0.2),
    0 8px 28px rgba(2, 132, 199, 0.1);
}

.tp-textarea::placeholder {
  color: var(--nk-text-muted);
}

/* Unified “Choose file” / accent pill buttons (landing + view) */
.tp-file-btn,
.tp-btn-file-style,
a.tp-btn-file-style,
button.tp-btn-file-style {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.35rem;
  padding: 0.65rem 1.25rem;
  font-size: 1rem;
  font-weight: 600;
  font-family: inherit;
  line-height: 1.2;
  color: var(--nk-bg);
  background: var(--nk-accent);
  border: none;
  border-radius: var(--nk-radius-sm);
  cursor: pointer;
  text-decoration: none;
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.12), 0 2px 8px rgba(56, 189, 248, 0.15);
  transition: background 0.2s, transform 0.15s, box-shadow 0.2s;
}

html[data-theme="light"] .tp-file-btn,
html[data-theme="light"] .tp-btn-file-style,
html[data-theme="light"] a.tp-btn-file-style,
html[data-theme="light"] button.tp-btn-file-style {
  color: #fff;
}

.tp-file-btn:hover,
.tp-btn-file-style:hover,
a.tp-btn-file-style:hover,
button.tp-btn-file-style:hover {
  background: var(--nk-accent-hover);
  transform: translateY(-1px);
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.15), 0 4px 14px rgba(56, 189, 248, 0.25);
}

.tp-btn-file-style:active,
.tp-file-btn:active {
  transform: translateY(0);
}

.tp-btn-file-style--sm {
  padding: 0.45rem 0.75rem;
  font-size: 0.85rem;
}

.tp-btn-file-style--icon {
  padding: 0.55rem 0.75rem;
  min-width: 2.5rem;
  font-size: 1.1rem;
}

.tp-btn-file-style[aria-pressed="true"],
.tp-file-btn[aria-pressed="true"] {
  background: var(--nk-accent-hover);
  box-shadow: inset 0 2px 6px rgba(0, 0, 0, 0.15);
}

.tp-btn-file-style:focus-visible,
.tp-file-btn:focus-visible,
a.tp-btn-file-style:focus-visible {
  outline: 2px solid var(--nk-accent);
  outline-offset: 3px;
}

html[data-theme="light"] .tp-btn-file-style:focus-visible,
html[data-theme="light"] .tp-file-btn:focus-visible,
html[data-theme="light"] a.tp-btn-file-style:focus-visible {
  outline-color: var(--nk-accent);
}

.nk-btn-primary.tp-btn-primary {
  /* legacy — match accent pills */
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.65rem 1.25rem;
  font-size: 1rem;
  font-weight: 600;
  font-family: inherit;
  color: var(--nk-bg);
  background: var(--nk-accent);
  border: none;
  border-radius: var(--nk-radius-sm);
  cursor: pointer;
  transition: background 0.2s, transform 0.15s;
}

html[data-theme="light"] .nk-btn-primary.tp-btn-primary {
  color: #fff;
}

.nk-btn-primary.tp-btn-primary:hover {
  background: var(--nk-accent-hover);
}

.tp-file-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.75rem 1rem;
}

.tp-file-label input[type="file"] {
  position: absolute;
  width: 0.1px;
  height: 0.1px;
  opacity: 0;
  overflow: hidden;
}

.tp-file-label {
  position: relative;
  display: inline-block;
  cursor: pointer;
  flex-shrink: 0;
}

.tp-file-name {
  font-size: 0.9rem;
  color: var(--nk-text-muted);
  word-break: break-all;
  flex: 1;
  min-width: 0;
}

.tp-alert {
  padding: 0.75rem 1rem;
  border-radius: var(--nk-radius-sm);
  margin: 0 auto 1rem;
  max-width: 560px;
  text-align: left;
}

.tp-alert-error {
  background: rgba(248, 113, 113, 0.15);
  border: 1px solid rgba(248, 113, 113, 0.4);
  color: #fecaca;
}

html[data-theme="light"] .tp-alert-error {
  color: #991b1b;
}

.tp-back-wrap {
  margin-top: 2rem;
  text-align: center;
}

.tp-back-link {
  color: var(--nk-accent);
  text-decoration: none;
  font-weight: 600;
  font-size: 0.95rem;
}

.tp-back-link:hover {
  text-decoration: underline;
}

/* View page */
body.tp-view-page {
  display: flex;
  flex-direction: column;
  height: 100vh;
  overflow: hidden;
}

/* Load-time modal (camera privacy note) */
.tp-modal-overlay {
  position: fixed;
  inset: 0;
  z-index: 10000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem;
  background: rgba(15, 23, 42, 0.75);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
}

html[data-theme="light"] .tp-modal-overlay {
  background: rgba(15, 23, 42, 0.5);
}

.tp-modal-overlay[hidden] {
  display: none !important;
}

.tp-modal {
  max-width: 440px;
  width: 100%;
  padding: 1.5rem 1.35rem;
  background: var(--nk-card);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--nk-radius);
  box-shadow: var(--nk-shadow);
  text-align: center;
}

html[data-theme="light"] .tp-modal {
  border-color: rgba(0, 0, 0, 0.1);
}

.tp-modal-text {
  margin: 0 0 1.25rem;
  font-size: 1rem;
  line-height: 1.55;
  font-weight: 500;
  color: var(--nk-text);
  text-align: center;
}

.tp-modal .tp-btn-file-style {
  width: auto;
  min-width: 8rem;
  margin: 0 auto;
  display: inline-flex;
}

.tp-toolbar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 0.5rem 0.75rem;
  padding: 0.65rem 1rem;
  background: var(--tp-surface);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  flex-shrink: 0;
  z-index: 20;
}

html[data-theme="light"] .tp-toolbar {
  border-bottom-color: rgba(0, 0, 0, 0.08);
}

/* Toolbar links use same accent pill as “Choose file” */
.tp-toolbar .tp-toolbar-link.tp-btn-file-style {
  font-size: 0.9rem;
}

.tp-toolbar-group {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
  justify-content: center;
}

.tp-label {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.85rem;
  color: var(--tp-muted);
}

.tp-label-size {
  flex-wrap: wrap;
}

/* Range slider — sleek, matches accent */
.tp-range {
  width: 120px;
  height: 0.35rem;
  accent-color: var(--nk-accent);
  cursor: pointer;
}

html[data-theme="light"] .tp-range {
  accent-color: var(--nk-accent);
}

/* Legacy class names if any script still references .tp-btn */
.tp-btn {
  /* superseded by .tp-btn-file-style in markup */
  padding: 0.65rem 1.25rem;
  font-size: 0.9rem;
  font-family: inherit;
  font-weight: 600;
  background: var(--nk-accent);
  color: var(--nk-bg);
  border: none;
  border-radius: var(--nk-radius-sm);
  cursor: pointer;
}

html[data-theme="light"] .tp-btn {
  color: #fff;
}

.tp-btn[aria-pressed="true"] {
  background: var(--nk-accent-hover);
  box-shadow: inset 0 2px 6px rgba(0, 0, 0, 0.15);
}

.tp-btn-sm {
  padding: 0.45rem 0.75rem;
  font-size: 0.85rem;
}

.tp-camera-note {
  margin: 0;
  padding: 0.25rem 0.75rem;
  font-size: 0.8rem;
  color: var(--tp-muted);
  text-align: center;
  flex-shrink: 0;
}

.tp-layout {
  display: flex;
  flex: 1;
  min-height: 0;
  flex-direction: row;
}

.tp-prompter-wrap {
  flex: 1;
  min-width: 0;
  position: relative;
  overflow: hidden;
}

.tp-reading-line {
  position: absolute;
  left: 0;
  right: 0;
  top: 42%;
  height: 3px;
  background: linear-gradient(
    90deg,
    transparent,
    var(--tp-accent),
    transparent
  );
  opacity: 0.85;
  z-index: 5;
  pointer-events: none;
}

.tp-scroll-outer {
  height: 100%;
  overflow: hidden;
  position: relative;
}

.tp-scroll-inner {
  will-change: transform;
}

.tp-text {
  font-size: var(--tp-font-size);
  line-height: 1.55;
  padding: 45vh 8vw 60vh;
  max-width: 55ch;
  margin: 0 auto;
  white-space: pre-wrap;
  word-wrap: break-word;
  text-align: left;
}

.tp-text p {
  margin: 0 0 1em;
}

.tp-video-panel {
  width: min(360px, 40vw);
  flex-shrink: 0;
  background: #000;
  display: flex;
  flex-direction: column;
  align-items: stretch;
  border-left: 1px solid rgba(255, 255, 255, 0.1);
}

.tp-video {
  width: 100%;
  height: 100%;
  min-height: 200px;
  object-fit: cover;
}

.tp-camera-error {
  padding: 0.5rem;
  font-size: 0.8rem;
  color: #fecaca;
  margin: 0;
}

@media (max-width: 768px) {
  .tp-layout {
    flex-direction: column;
  }

  .tp-video-panel {
    width: 100%;
    max-height: 40vh;
    border-left: none;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
  }

  .tp-video {
    min-height: 180px;
    max-height: 40vh;
  }
}

@media (prefers-reduced-motion: reduce) {
  .tp-scroll-inner {
    transition: none;
  }
}