:root {
  --primary-accent: #6366f1; /* Nuevo color de acento índigo */
  --primary-accent-hover: #4f46e5;
  --success-color: #22c55e;
  --error-color: #ef4444;
  --bg-color: #f8fafc; /* Fondo gris muy claro */
  --surface-color: #ffffff; /* Color de las tarjetas */
  --text-color: #0f172a; /* Azul oscuro casi negro */
  --text-secondary-color: #64748b;
  --border-color: #e2e8f0;
  --shadow-color: rgba(149, 157, 165, 0.1);
  --overlay-color: rgba(248, 250, 252, 0.85);
}

body.dark-mode {
  --primary-accent: #818cf8;
  --primary-accent-hover: #6366f1;
  --success-color: #4ade80;
  --error-color: #f87171;
  --bg-color: #0f172a; /* Fondo azul oscuro */
  --surface-color: #1e293b; /* Color de las tarjetas */
  --text-color: #f8fafc;
  --text-secondary-color: #94a3b8;
  --border-color: #334155;
  --shadow-color: rgba(0, 0, 0, 0.2);
  --overlay-color: rgba(30, 41, 59, 0.85);
}

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

html {
  scroll-behavior: smooth;
  background-color: var(--bg-color);
  transition: background-color 0.3s;
}

body {
  font-family: "Plus Jakarta Sans", -apple-system, sans-serif;
  background: var(--bg-color);
  color: var(--text-color);
  line-height: 1.6;
  transition: background-color 0.3s, color 0.3s;
}

#page-wrapper {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}
.container {
  flex-grow: 1;
}

#page-wrapper {
  animation: fadeIn 0.4s ease-out forwards;
}
#page-wrapper.fade-out {
  animation: fadeOut 0.4s ease-in forwards;
}
@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}
@keyframes fadeOut {
  from {
    opacity: 1;
  }
  to {
    opacity: 0;
  }
}

/* --- ANIMACIÓN AMANECER/ATARDECER --- */
@keyframes reveal-in {
  from {
    clip-path: circle(0% at var(--x) var(--y));
  }
  to {
    clip-path: circle(150% at var(--x) var(--y));
  }
}
@keyframes reveal-out {
  from {
    clip-path: circle(150% at var(--x) var(--y));
  }
  to {
    clip-path: circle(0% at var(--x) var(--y));
  }
}

::view-transition {
  animation-duration: 0.5s;
  animation-timing-function: cubic-bezier(0.4, 0, 0.2, 1);
}
/* Atardecer (hacia modo oscuro): animamos la vista antigua para que se encoja */
html.theme-to-dark::view-transition-old(root) {
  animation-name: reveal-out;
}
html.theme-to-dark::view-transition-new(root) {
  animation-name: none;
}

/* Amanecer (hacia modo claro): animamos la vista nueva para que se expanda */
html.theme-to-light::view-transition-new(root) {
  animation-name: reveal-in;
}
html.theme-to-light::view-transition-old(root) {
  animation-name: none;
}

.container {
  max-width: 800px;
  margin: 0 auto;
  padding: 40px 20px;
  position: relative;
}

.header-container {
  text-align: center;
  margin-bottom: 40px;
}

/* --- BOTONES FIJOS (CON TRANSICIÓN PARA OCULTARSE) --- */
.hamburger-btn,
#theme-toggle-btn {
  position: fixed;
  top: 25px;
  z-index: 1001;
  background: var(--surface-color);
  border: 1px solid var(--border-color);
  border-radius: 50%;
  width: 48px;
  height: 48px;
  display: grid;
  place-items: center;
  cursor: pointer;
  box-shadow: 0 4px 12px var(--shadow-color);
  padding: 0;
  transition: transform 0.3s ease-in-out, box-shadow 0.2s, border-color 0.2s;
}
.hamburger-btn:hover,
#theme-toggle-btn:hover {
  transform: translateY(-2px) scale(1.05);
  box-shadow: 0 6px 16px var(--shadow-color);
  border-color: var(--primary-accent);
}
/* Clase que se añade con JS para ocultar los botones */
.hamburger-btn.hidden,
#theme-toggle-btn.hidden,
body.immersive-mode-active .hamburger-btn,
body.immersive-mode-active #theme-toggle-btn {
  transform: translateY(-150%);
}

.hamburger-btn {
  right: 25px;
}
#theme-toggle-btn {
  left: 25px;
}

.hamburger-lines {
  width: 20px;
  height: 20px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}
.line {
  display: block;
  width: 100%;
  height: 2px;
  background-color: var(--text-secondary-color);
  border-radius: 2px;
  transition: all 0.3s ease-in-out;
}
.hamburger-btn.active .line:nth-child(1) {
  transform: rotate(45deg) translate(6px, 6px);
}
.hamburger-btn.active .line:nth-child(2) {
  opacity: 0;
}
.hamburger-btn.active .line:nth-child(3) {
  transform: rotate(-45deg) translate(6px, -6px);
}

h1 {
  font-size: 2.8em;
  font-weight: 700;
  letter-spacing: -1.5px;
  margin-bottom: 8px;
  cursor: pointer;
}
.subtitle {
  font-size: 1.1em;
  color: var(--text-secondary-color);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 12px;
}
.subtitle em {
  font-style: italic;
  font-weight: 500;
}

.feedback-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background-color: color-mix(in srgb, #25d366 15%, transparent);
  color: #1da851 !important;
  font-weight: 600;
  padding: 5px 12px;
  border-radius: 999px;
  font-size: 0.9em;
  text-decoration: none;
  transition: all 0.2s;
}
.dark-mode .feedback-link {
  background-color: color-mix(in srgb, #25d366 25%, transparent);
  color: #4ade80 !important;
}
.feedback-link:hover {
  background-color: color-mix(in srgb, #25d366 25%, transparent);
  transform: translateY(-2px) scale(1.05);
  text-decoration: none !important;
  box-shadow: 0 4px 10px var(--shadow-color);
}
.feedback-link svg {
  width: 18px;
  height: 18px;
  stroke-width: 2.5px;
}

h2 {
  font-size: 1.5em;
  font-weight: 600;
  margin-bottom: 20px;
  text-align: center;
}

.menu-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(15, 23, 42, 0.8);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  z-index: 1000;
  display: flex;
  align-items: flex-start;
  justify-content: center;
  padding: 80px 20px 20px 20px;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s ease, visibility 0.3s ease;
}
.menu-overlay.active {
  opacity: 1;
  visibility: visible;
}
.menu-card {
  background-color: var(--surface-color);
  width: 100%;
  max-width: 400px;
  padding: 30px 25px;
  border-radius: 20px;
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.2);
  transform: translateY(-30px);
  opacity: 0;
  transition: transform 0.4s cubic-bezier(0.25, 1, 0.5, 1), opacity 0.3s ease;
}
.menu-overlay.active .menu-card {
  transform: translateY(0);
  opacity: 1;
}
.menu-grabber {
  width: 32px;
  height: 4px;
  background-color: var(--border-color);
  border-radius: 2.5px;
  margin: 0 auto 20px auto;
  opacity: 0.3;
}
.menu-card nav a {
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: var(--text-color);
  font-size: 1.1em;
  font-weight: 500;
  text-decoration: none;
  padding: 18px 20px;
  margin-bottom: 8px;
  border-radius: 12px;
  transition: background-color 0.2s, color 0.2s;
}
.menu-card nav a::after {
  content: "›";
  font-size: 1.5em;
  color: var(--text-secondary-color);
  transition: color 0.2s;
}
.menu-card nav a:hover {
  background-color: color-mix(in srgb, var(--primary-accent) 10%, transparent);
  color: var(--primary-accent);
}
.menu-card nav a:hover::after {
  color: var(--primary-accent);
}

#theme-toggle-btn svg {
  width: 24px;
  height: 24px;
  position: absolute;
  transition: transform 0.3s ease, opacity 0.3s ease;
  color: var(--text-secondary-color);
}
#theme-toggle-btn .icon-moon {
  transform: scale(0);
  opacity: 0;
}
body.dark-mode #theme-toggle-btn .icon-sun {
  transform: scale(0);
  opacity: 0;
}
body.dark-mode #theme-toggle-btn .icon-moon {
  transform: scale(1);
  opacity: 1;
}

.main-section {
  background: var(--surface-color);
  border-radius: 24px;
  padding: 35px;
  margin-bottom: 30px;
  border: 1px solid var(--border-color);
  box-shadow: 0 8px 32px var(--shadow-color);
  transition: background-color 0.3s, border-color 0.3s;
}
#analysisSection {
  position: relative;
}
.instructions {
  background: transparent;
  border: none;
  box-shadow: none;
  padding: 0;
  margin-top: 40px;
  margin-bottom: 40px;
}
.instructions h3 {
  font-weight: 600;
  margin-bottom: 20px;
  text-align: center;
  font-size: 1.2em;
}
.instructions ul {
  list-style: none;
  padding-left: 0;
  display: grid;
  gap: 15px;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
}
.instructions li {
  color: var(--text-secondary-color);
  background-color: var(--surface-color);
  padding: 15px;
  border-radius: 12px;
  border: 1px solid var(--border-color);
  display: flex;
  align-items: flex-start;
}
.instructions li::before {
  content: "✓";
  color: var(--success-color);
  font-weight: 600;
  margin-right: 12px;
  font-size: 1.1em;
  background-color: color-mix(in srgb, var(--success-color) 15%, transparent);
  border-radius: 50%;
  width: 24px;
  height: 24px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  line-height: 1;
}

.faq-section details {
  border-bottom: 1px solid var(--border-color);
  transition: background-color 0.2s ease;
}
.faq-section details:last-child {
  border-bottom: none;
}
.faq-section details:hover {
  background-color: color-mix(in srgb, var(--primary-accent) 4%, transparent);
}
.faq-section summary {
  font-weight: 600;
  cursor: pointer;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 5px;
}
.faq-section summary::-webkit-details-marker {
  display: none;
}
.faq-section summary::after {
  content: "+";
  font-size: 1.5em;
  color: var(--primary-accent);
  transition: transform 0.3s ease-out;
  transform-origin: center;
}
.faq-section details[open] > summary::after {
  transform: rotate(45deg);
}
.faq-content {
  display: grid;
  grid-template-rows: 0fr;
  transition: grid-template-rows 0.4s cubic-bezier(0.25, 1, 0.5, 1);
}
.faq-section details[open] > .faq-content {
  grid-template-rows: 1fr;
}
.faq-content > div {
  overflow: hidden;
}
.faq-section p {
  padding: 0 20px 20px 5px;
  color: var(--text-secondary-color);
  line-height: 1.7;
}

.option-separator {
  text-align: center;
  margin: 20px 0;
  color: var(--text-secondary-color);
  display: flex;
  align-items: center;
  gap: 15px;
}
.option-separator::before,
.option-separator::after {
  content: "";
  height: 1px;
  background-color: var(--border-color);
  flex: 1;
}
#recordBtn {
  width: 100%;
}
.upload-zone {
  border: 2px dashed var(--border-color);
  border-radius: 16px;
  padding: 50px;
  text-align: center;
  cursor: pointer;
  transition: all 0.3s ease;
}
.upload-zone:hover,
.upload-zone.dragover {
  border-color: var(--primary-accent);
  background: color-mix(
    in srgb,
    var(--primary-accent) 5%,
    var(--surface-color)
  );
}
.upload-zone h3 {
  font-weight: 600;
  margin-bottom: 8px;
}
.upload-zone p {
  color: var(--text-secondary-color);
}
.upload-notice {
  font-size: 0.85em;
  color: var(--text-secondary-color);
  text-align: center;
  margin-top: 20px;
}

/* --- ESTILOS PARA LA GRABACIÓN EN VIVO Y EL ASISTENTE --- */
.live-video-wrapper {
  position: relative;
  width: 100%;
  max-width: 600px;
  margin: 0 auto;
  border-radius: 16px;
  overflow: hidden;
}

.instruction-overlay {
  position: absolute;
  bottom: 20px;
  left: 50%;
  transform: translateX(-50%);
  background-color: rgba(0, 0, 0, 0.75);
  color: white;
  padding: 12px 20px;
  border-radius: 12px;
  font-size: 0.95em;
  font-weight: 500;
  z-index: 10;
  text-align: center;
  opacity: 0;
  transition: opacity 0.4s ease, background-color 0.4s ease;
  pointer-events: none;
  width: calc(100% - 40px);
  max-width: 450px;
}

.instruction-overlay.visible {
  opacity: 1;
}

/* --- NUEVO ESTILO PARA EL ESTADO "LISTO" --- */
.instruction-overlay.is-ready {
  background-color: rgba(34, 197, 94, 0.85); /* Verde éxito */
}
/* --- FIN DE ESTILOS DE GRABACIÓN --- */

.video-container {
  display: flex;
  gap: 30px;
  margin-bottom: 30px;
}
.video-wrapper {
  flex: 1;
  min-width: 0;
}
.video-wrapper h3 {
  font-size: 1em;
  font-weight: 500;
  color: var(--text-secondary-color);
  margin-bottom: 10px;
  text-align: center;
}
video,
canvas {
  width: 100%;
  height: auto;
  background: #000;
  border-radius: 16px;
  border: 1px solid var(--border-color);
}
.blurred-video {
  filter: blur(4px);
  -webkit-filter: blur(4px);
}
.hidden-processing-video {
  position: absolute;
  top: 0;
  left: 0;
  width: 1px;
  height: 1px;
  opacity: 0;
  pointer-events: none;
}
.controls {
  text-align: center;
  margin: 20px 0;
}
.button-group {
  display: flex;
  justify-content: center;
  gap: 15px;
  flex-wrap: wrap;
}
.control-btn,
.control-btn-secondary {
  border: none;
  padding: 15px 35px;
  border-radius: 12px;
  cursor: pointer;
  font-size: 1em;
  font-weight: 600;
  transition: all 0.2s ease;
  min-width: 200px;
  white-space: nowrap;
}
.control-btn {
  background: var(--primary-accent);
  color: white;
  box-shadow: 0 4px 15px
    color-mix(in srgb, var(--primary-accent) 30%, transparent);
}
.control-btn:hover:not(:disabled) {
  background: var(--primary-accent-hover);
  transform: translateY(-3px);
  box-shadow: 0 7px 20px
    color-mix(in srgb, var(--primary-accent) 40%, transparent);
}
.control-btn:disabled {
  background: var(--border-color);
  color: var(--text-secondary-color);
  cursor: not-allowed;
  box-shadow: none;
  transform: none;
  opacity: 0.7;
}
.control-btn-secondary {
  background-color: var(--surface-color);
  color: var(--text-color);
  border: 1px solid var(--border-color);
  box-shadow: 0 4px 15px var(--shadow-color);
}
.control-btn-secondary:hover {
  transform: translateY(-3px);
  box-shadow: 0 7px 20px var(--shadow-color);
  border-color: var(--text-secondary-color);
}
.progress-bar {
  width: 100%;
  height: 8px;
  background-color: var(--border-color);
  border-radius: 4px;
  overflow: hidden;
  margin: 30px auto 0;
  position: relative;
}
.progress-fill {
  height: 100%;
  background-color: var(--primary-accent);
  border-radius: 4px;
  width: 0%;
  transition: width 0.1s linear;
}
.loading {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: var(--overlay-color);
  backdrop-filter: blur(8px);
  border-radius: 24px;
  display: none;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 20px;
  z-index: 10;
  transition: opacity 0.3s;
}
.loading-spinner {
  width: 70px;
  height: 70px;
  animation: bounce 1s infinite alternate ease-in-out;
}
.loading-spinner svg {
  width: 100%;
  height: 100%;
  animation: spin 3s linear infinite;
}
#loadingText {
  font-size: 1.1em;
  font-weight: 500;
  color: var(--text-secondary-color);
}
@keyframes spin {
  from {
    transform: rotate(0deg);
  }
  to {
    transform: rotate(360deg);
  }
}
@keyframes bounce {
  from {
    transform: translateY(0px);
  }
  to {
    transform: translateY(-15px);
  }
}
.results-section h3,
.results-section h4 {
  font-weight: 600;
  margin: 1.8em 0 1em;
}
.score-container {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 15px;
  margin-bottom: 25px;
}
.score-circle {
  --size: 130px;
  --thickness: 12px;
  --score: 0;
  --angle: calc(var(--score) / 10 * 360deg);
  width: var(--size);
  height: var(--size);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: conic-gradient(
    var(--primary-accent) var(--angle),
    var(--border-color) var(--angle)
  );
  position: relative;
  color: var(--text-secondary-color);
  font-size: 1.1em;
}
.score-circle::before {
  content: "";
  position: absolute;
  width: calc(var(--size) - var(--thickness) * 2);
  height: calc(var(--size) - var(--thickness) * 2);
  background: var(--surface-color);
  border-radius: 50%;
}
.score-circle > div {
  z-index: 1;
  text-align: center;
}
.score-circle .score-value {
  font-size: 2.8em;
  font-weight: 700;
  color: var(--text-color);
  line-height: 1;
}
.score-container h3 {
  margin: 0;
  font-size: 1.2em;
}
#technicalAnalysis p.summary-text {
  text-align: center;
  font-size: 1.1em;
  color: var(--text-secondary-color);
  max-width: 600px;
  margin: 0 auto 30px auto;
}
#technicalAnalysis details {
  background: var(--bg-color);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  padding: 15px 20px;
  margin-bottom: 15px;
  transition: box-shadow 0.2s;
}
#technicalAnalysis details:hover {
  box-shadow: 0 4px 15px var(--shadow-color);
}
#technicalAnalysis summary {
  font-weight: 600;
  font-size: 1.1em;
  cursor: pointer;
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
#technicalAnalysis summary::-webkit-details-marker {
  display: none;
}
#technicalAnalysis summary::after {
  content: "+";
  font-size: 1.6em;
  font-weight: 400;
  color: var(--text-secondary-color);
  transition: transform 0.3s;
}
#technicalAnalysis details[open] summary::after {
  transform: rotate(45deg);
}
#technicalAnalysis ul {
  list-style: none;
  padding: 0;
  margin-top: 20px;
}
#technicalAnalysis li {
  display: flex;
  align-items: flex-start;
  gap: 15px;
  padding: 0;
  margin-bottom: 15px;
  border: none;
}
#technicalAnalysis li::before {
  font-size: 1.1em;
  font-weight: 700;
  width: 24px;
  height: 24px;
  flex-shrink: 0;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  line-height: 1;
}
#technicalAnalysis details.positives-details li::before {
  content: "✓";
  color: var(--success-color);
  background-color: color-mix(in srgb, var(--success-color) 15%, transparent);
}
#technicalAnalysis details.corrections-details li::before {
  content: "✗";
  color: var(--error-color);
  background-color: color-mix(in srgb, var(--error-color) 15%, transparent);
}
#technicalAnalysis li strong {
  display: block;
  color: var(--text-color);
  font-weight: 600;
  margin-bottom: 2px;
}
#technicalAnalysis li span {
  color: var(--text-secondary-color);
}
.frames-container details {
  margin-top: 30px;
  border-top: 1px solid var(--border-color);
  padding-top: 20px;
}
.frames-container summary {
  font-weight: 500;
  cursor: pointer;
  color: var(--text-secondary-color);
}
#errorScreenshots {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
  gap: 15px;
  margin-top: 15px;
}
#errorScreenshots img {
  width: 100%;
  border-radius: 12px;
  border: 1px solid var(--border-color);
  cursor: pointer;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}
#errorScreenshots img:hover {
  transform: scale(1.03);
  box-shadow: 0 4px 15px var(--shadow-color);
}
#chatSection {
  border-top: 1px solid var(--border-color);
  margin-top: 30px;
  padding-top: 20px;
}
.chat-container {
  border: 1px solid var(--border-color);
  border-radius: 16px;
  padding: 15px;
  max-height: 400px;
  display: flex;
  flex-direction: column;
}
#chatMessages {
  flex-grow: 1;
  overflow-y: auto;
  margin-bottom: 15px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.chat-message {
  padding: 10px 15px;
  border-radius: 18px;
  max-width: 80%;
  line-height: 1.5;
}
.ai-message {
  background-color: var(--bg-color);
  color: var(--text-color);
  align-self: flex-start;
  border-bottom-left-radius: 4px;
}
.user-message {
  background-color: var(--primary-accent);
  color: white;
  align-self: flex-end;
  border-bottom-right-radius: 4px;
}
.chat-input-area {
  display: flex;
  gap: 10px;
}
#chatInput {
  flex-grow: 1;
  border: 1px solid var(--border-color);
  background-color: var(--surface-color);
  border-radius: 12px;
  padding: 12px 15px;
  font-size: 1em;
  color: var(--text-color);
  outline: none;
  transition: border-color 0.2s, box-shadow 0.2s;
}
#chatInput:focus {
  border-color: var(--primary-accent);
  box-shadow: 0 0 0 3px
    color-mix(in srgb, var(--primary-accent) 20%, transparent);
}
#sendChatBtn {
  background-color: var(--primary-accent);
  border: none;
  border-radius: 12px;
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: background-color 0.2s;
}
#sendChatBtn:hover {
  background-color: var(--primary-accent-hover);
}
#sendChatBtn svg {
  width: 20px;
  height: 20px;
  color: white;
}
.footer {
  text-align: center;
  padding: 40px 20px 20px 20px;
  color: var(--text-secondary-color);
  font-size: 0.9em;
  font-weight: 500;
}
.footer a {
  color: var(--text-secondary-color);
  text-decoration: none;
  font-weight: 500;
}
.footer a:hover {
  color: var(--primary-accent);
  text-decoration: underline;
}
.footer .heart-icon {
  color: #ef4444;
  display: inline-block;
  transform: translateY(3px);
  width: 1em;
  height: 1em;
} /* Icono del corazón */
.exercise-selector {
  margin: 25px 0 15px 0;
  display: flex;
  flex-direction: column;
  gap: 15px;
  align-items: center;
}
.exercise-selector label {
  font-weight: 500;
  color: var(--text-secondary-color);
}
.icon-buttons-container {
  display: flex;
  flex-wrap: wrap;
  gap: 15px;
  justify-content: center;
}
.icon-btn {
  background-color: var(--bg-color);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 12px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  cursor: pointer;
  transition: all 0.2s ease;
  min-width: 90px;
  text-align: center;
  color: var(--text-secondary-color);
}
.icon-btn:hover {
  transform: translateY(-3px);
  box-shadow: 0 4px 12px var(--shadow-color);
  border-color: var(--text-secondary-color);
}
.icon-btn.selected {
  background-color: var(--primary-accent);
  color: white;
  border-color: var(--primary-accent);
  transform: translateY(-3px) scale(1.05);
  box-shadow: 0 6px 16px
    color-mix(in srgb, var(--primary-accent) 30%, transparent);
}
.icon-btn svg {
  width: 32px;
  height: 32px;
  stroke: currentColor;
  stroke-width: 2px;
  fill: none;
  transition: transform 0.2s ease;
}
.icon-btn.selected svg {
  transform: scale(1.1);
}
.icon-btn span {
  font-size: 0.85em;
  font-weight: 500;
}
.modal-overlay {
  position: fixed;
  z-index: 1000;
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.85);
  backdrop-filter: blur(5px);
  display: flex;
  justify-content: center;
  align-items: center;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s ease, visibility 0.3s ease;
}
.modal-overlay.active {
  opacity: 1;
  visibility: visible;
}
img.modal-content {
  display: block;
  width: auto;
  height: auto;
  max-width: 90%;
  max-height: 85%;
  object-fit: contain;
  animation: zoomIn 0.3s ease;
  border-radius: 12px;
}
.close-btn {
  position: absolute;
  top: 20px;
  right: 35px;
  color: #fff;
  font-size: 40px;
  font-weight: bold;
  cursor: pointer;
  transition: color 0.2s;
}
.close-btn:hover {
  color: #bbb;
}
@keyframes zoomIn {
  from {
    transform: scale(0.8);
    opacity: 0;
  }
  to {
    transform: scale(1);
    opacity: 1;
  }
}
@media (max-width: 768px) {
  .container {
    padding: 20px 15px;
    padding-top: 100px;
  }
  .header-container {
    margin-bottom: 30px;
  }
  .subtitle {
    flex-direction: column;
    gap: 10px;
  }
  h1 {
    font-size: 2.2em;
  }
  h2 {
    font-size: 1.5em;
  }
  .main-section {
    padding: 20px;
    border-radius: 20px;
  }
  .upload-zone {
    padding: 30px;
  }
  #captureOptions {
    display: flex;
    flex-direction: column;
    gap: 15px;
  }
  .video-container {
    flex-direction: column;
    gap: 20px;
  }
  .control-btn,
  .control-btn-secondary {
    padding: 16px 25px;
  }
}
@media (max-width: 480px) {
  .control-btn,
  .control-btn-secondary {
    width: 100%;
    min-width: unset;
    padding: 18px 20px;
  }
  .button-group {
    gap: 12px;
    flex-direction: column;
  }
  .hamburger-btn,
  #theme-toggle-btn {
    width: 44px;
    height: 44px;
    top: 20px;
  }
  .hamburger-btn {
    right: 20px;
  }
  #theme-toggle-btn {
    left: 20px;
  }
  .hamburger-lines {
    width: 18px;
    height: 18px;
  }
  .menu-card {
    width: 95%;
    max-height: 75vh;
    padding: 25px;
  }
  .menu-overlay {
    padding-top: 75px;
  }
  .icon-btn {
    min-width: 75px;
  }
}