/* ============================================================
   REALITHINK CYBERPUNK DEMO — STYLES (MOBILE-FIRST)
   Paleta: cyan eléctrico #00FFFF sobre negro profundo
   ============================================================ */

:root {
  /* Colores */
  --bg-deep: #050608;
  --bg-panel: #0a0d12;
  --bg-panel-2: #0e1218;
  --border: #1a2230;
  --border-glow: #1f3548;
  --text: #e6f3ff;
  --text-dim: #6b7a8f;
  --text-muted: #3d4a5c;
  --accent: #00FFFF;
  --accent-glow: #00ffffaa;
  --accent-soft: #00ffff22;
  --magenta: #ff00aa;
  --error: #ff3355;
  --success: #00ff88;

  /* Tipografía */
  --font-display: 'Orbitron', 'JetBrains Mono', monospace;
  --font-mono: 'JetBrains Mono', 'Courier New', monospace;

  /* Safe areas (iPhone notch + home indicator) */
  --safe-top: env(safe-area-inset-top, 0px);
  --safe-bottom: env(safe-area-inset-bottom, 0px);
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  -webkit-tap-highlight-color: transparent;
}

/* Esconder img sin src (evita icono roto al inicio) */
img:not([src]),
img[src=""] {
  visibility: hidden;
}

/* Asegurar que [hidden] siempre oculte, incluso con position absolute */
[hidden] {
  display: none !important;
}

html, body {
  height: 100%;
  overscroll-behavior: none;
}

body {
  font-family: var(--font-mono);
  background: var(--bg-deep);
  color: var(--text);
  overflow-x: hidden;
  position: relative;
  min-height: 100vh;
  min-height: 100dvh; /* dynamic viewport para mobile */
  display: flex;
  flex-direction: column;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* ============================================================
   FONDOS DECORATIVOS
   ============================================================ */

.grid-bg {
  position: fixed;
  inset: 0;
  background-image:
    linear-gradient(rgba(0, 255, 255, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 255, 255, 0.04) 1px, transparent 1px);
  background-size: 40px 40px;
  pointer-events: none;
  z-index: 0;
  mask-image: radial-gradient(ellipse at center, black 0%, transparent 80%);
  -webkit-mask-image: radial-gradient(ellipse at center, black 0%, transparent 80%);
}

.grid-bg::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 20% 30%, rgba(0, 255, 255, 0.08), transparent 40%),
    radial-gradient(circle at 80% 70%, rgba(255, 0, 170, 0.05), transparent 40%);
}

.scanlines {
  position: fixed;
  inset: 0;
  background: repeating-linear-gradient(
    0deg,
    transparent 0,
    transparent 2px,
    rgba(0, 255, 255, 0.012) 2px,
    rgba(0, 255, 255, 0.012) 4px
  );
  pointer-events: none;
  z-index: 1;
}

.noise {
  position: fixed;
  inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.5'/%3E%3C/svg%3E");
  opacity: 0.04;
  pointer-events: none;
  z-index: 2;
  mix-blend-mode: overlay;
}

/* ============================================================
   HEADER — MOBILE FIRST
   ============================================================ */

.header {
  position: relative;
  z-index: 10;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: calc(0.85rem + var(--safe-top)) 1.1rem 0.85rem;
  border-bottom: 1px solid var(--border);
  background: rgba(5, 6, 8, 0.75);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

.header__brand {
  display: flex;
  align-items: center;
  gap: 0.55rem;
  font-size: 0.75rem;
  letter-spacing: 0.12em;
}

.brand-mark {
  font-family: var(--font-mono);
  font-weight: 800;
  font-size: 0.95rem;
  color: var(--accent);
  text-shadow: 0 0 10px var(--accent-glow);
}

.brand-divider {
  color: var(--border);
}

.brand-text {
  font-family: var(--font-display);
  font-weight: 700;
  letter-spacing: 0.25em;
  color: var(--text);
}

.header__status {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.6rem;
  letter-spacing: 0.18em;
  color: var(--text-dim);
}

.status-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--success);
  box-shadow: 0 0 8px var(--success);
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}

/* ============================================================
   MAIN — MOBILE FIRST
   ============================================================ */

.main {
  flex: 1;
  position: relative;
  z-index: 5;
  width: 100%;
  margin: 0 auto;
  padding: 2rem 1.1rem;
}

/* HERO */

.hero {
  text-align: center;
  margin-bottom: 2.25rem;
}

.hero__kicker {
  font-size: 0.6rem;
  letter-spacing: 0.25em;
  color: var(--accent);
  margin-bottom: 1rem;
  opacity: 0.85;
}

.hero__title {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(2.25rem, 11vw, 3.5rem);
  line-height: 0.92;
  letter-spacing: 0.01em;
  margin-bottom: 1rem;
}

.title-line {
  display: block;
}

.title-line--accent {
  color: var(--accent);
  text-shadow:
    0 0 20px var(--accent-glow),
    0 0 40px var(--accent-soft);
  position: relative;
  animation: glitch-text 4s infinite;
}

@keyframes glitch-text {
  0%, 90%, 100% { transform: translate(0); }
  92% { transform: translate(-2px, 1px); }
  94% { transform: translate(2px, -1px); }
  96% { transform: translate(-1px, 0); }
}

.title-line--accent::before,
.title-line--accent::after {
  content: attr(data-text);
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  opacity: 0;
}

.title-line--accent::before {
  color: var(--magenta);
  animation: glitch-shadow-1 4s infinite;
}

.title-line--accent::after {
  color: var(--accent);
  animation: glitch-shadow-2 4s infinite;
}

@keyframes glitch-shadow-1 {
  0%, 90%, 100% { opacity: 0; transform: translate(0); }
  92%, 94% { opacity: 0.7; transform: translate(-3px, 1px); }
}

@keyframes glitch-shadow-2 {
  0%, 90%, 100% { opacity: 0; transform: translate(0); }
  93%, 95% { opacity: 0.7; transform: translate(3px, -1px); }
}

.hero__subtitle {
  font-size: 0.85rem;
  color: var(--text-dim);
  max-width: 540px;
  margin: 0 auto;
  line-height: 1.55;
  padding: 0 0.5rem;
}

.hero__subtitle code {
  color: var(--accent);
  background: var(--accent-soft);
  padding: 0.1em 0.4em;
  border-radius: 2px;
  font-size: 0.9em;
}

/* ============================================================
   APP — Stack vertical en mobile, grid en desktop
   ============================================================ */

.app {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  max-width: 720px;
  margin: 0 auto;
}

.panel {
  background: var(--bg-panel);
  border: 1px solid var(--border);
  position: relative;
  padding: 1.1rem;
  display: flex;
  flex-direction: column;
}

.panel::before {
  content: '';
  position: absolute;
  top: -1px;
  left: -1px;
  right: -1px;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--accent), transparent);
  opacity: 0.5;
}

.panel::after {
  content: '';
  position: absolute;
  top: 8px;
  right: 8px;
  width: 14px;
  height: 14px;
  border-top: 1px solid var(--accent);
  border-right: 1px solid var(--accent);
  opacity: 0.6;
}

.panel__label {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.65rem;
  letter-spacing: 0.22em;
  color: var(--text-dim);
  margin-bottom: 1rem;
  padding-bottom: 0.85rem;
  border-bottom: 1px dashed var(--border);
}

.label-num {
  color: var(--accent);
  font-weight: 700;
}

/* ============================================================
   DROPZONE — touch-friendly
   ============================================================ */

.dropzone {
  flex: 1;
  border: 1.5px dashed var(--border-glow);
  background: var(--bg-panel-2);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all 0.25s ease;
  position: relative;
  overflow: hidden;
  min-height: 240px;
  -webkit-user-select: none;
  user-select: none;
}

.dropzone:active {
  border-color: var(--accent);
  background: rgba(0, 255, 255, 0.05);
  transform: scale(0.995);
}

.dropzone.is-dragover {
  border-color: var(--accent);
  border-style: solid;
  background: rgba(0, 255, 255, 0.06);
  box-shadow: inset 0 0 40px rgba(0, 255, 255, 0.1);
}

.dropzone__empty {
  text-align: center;
  padding: 1.5rem 1rem;
  color: var(--text-dim);
  transition: color 0.25s;
}

.dropzone__icon {
  width: 52px;
  height: 52px;
  margin: 0 auto 1rem;
  color: currentColor;
  opacity: 0.7;
}

.dropzone__title {
  font-family: var(--font-display);
  font-size: 0.9rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  margin-bottom: 0.4rem;
  color: var(--text);
}

.dropzone__subtitle {
  font-size: 0.75rem;
  margin-bottom: 0.85rem;
}

.dropzone__hint {
  font-size: 0.65rem;
  letter-spacing: 0.13em;
  color: var(--text-muted);
}

.dropzone__preview {
  width: 100%;
  height: 100%;
  min-height: 240px;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
}

.dropzone__preview img {
  max-width: 100%;
  max-height: 320px;
  object-fit: contain;
  border: 1px solid var(--border-glow);
}

.dropzone__clear {
  position: absolute;
  top: 8px;
  right: 8px;
  width: 40px;
  height: 40px;
  background: rgba(5, 6, 8, 0.85);
  border: 1px solid var(--border-glow);
  color: var(--text);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s;
}

.dropzone__clear:active {
  border-color: var(--error);
  color: var(--error);
}

/* ============================================================
   TURNSTILE
   ============================================================ */

.turnstile-wrap {
  margin-top: 1rem;
  display: flex;
  justify-content: center;
}

.turnstile-wrap[hidden] {
  display: none;
}

/* ============================================================
   BOTÓN GENERATE
   ============================================================ */

.btn-generate {
  margin-top: 1rem;
  padding: 1.05rem 1rem;
  background: transparent;
  border: 1px solid var(--accent);
  color: var(--accent);
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 0.78rem;
  letter-spacing: 0.2em;
  cursor: pointer;
  position: relative;
  transition: all 0.25s;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  overflow: hidden;
  min-height: 52px;
}

.btn-generate::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, transparent, var(--accent-soft), transparent);
  transform: translateX(-100%);
  transition: transform 0.5s;
}

.btn-generate:not(:disabled):active {
  background: var(--accent);
  color: var(--bg-deep);
  box-shadow: 0 0 20px var(--accent-glow);
}

.btn-generate:not(:disabled):active::before {
  transform: translateX(100%);
}

.btn-generate:disabled {
  opacity: 0.3;
  cursor: not-allowed;
  border-color: var(--border);
  color: var(--text-muted);
}

.btn-generate__bracket {
  opacity: 0.5;
}

/* ============================================================
   RESULT
   ============================================================ */

.result {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-panel-2);
  border: 1px solid var(--border);
  min-height: 280px;
  position: relative;
  overflow: hidden;
}

.result__idle,
.result__loading,
.result__success,
.result__error {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  padding: 1.25rem;
}

/* Idle / Placeholder */

.placeholder-frame {
  position: relative;
  width: 80%;
  max-width: 220px;
  aspect-ratio: 1;
  border: 1px dashed var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
}

.placeholder-corner {
  position: absolute;
  width: 12px;
  height: 12px;
  border: 1.5px solid var(--accent);
  opacity: 0.5;
}

.placeholder-corner--tl { top: -2px; left: -2px; border-right: 0; border-bottom: 0; }
.placeholder-corner--tr { top: -2px; right: -2px; border-left: 0; border-bottom: 0; }
.placeholder-corner--bl { bottom: -2px; left: -2px; border-right: 0; border-top: 0; }
.placeholder-corner--br { bottom: -2px; right: -2px; border-left: 0; border-top: 0; }

.placeholder-text {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.22em;
  color: var(--text-muted);
}

/* Loading */

.loader {
  position: relative;
  width: 64px;
  height: 64px;
  margin-bottom: 1.25rem;
}

.loader__ring {
  position: absolute;
  inset: 0;
  border: 2px solid transparent;
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 1.2s linear infinite;
}

.loader__ring--2 {
  inset: 7px;
  border-top-color: transparent;
  border-right-color: var(--accent);
  animation-duration: 1.6s;
  animation-direction: reverse;
}

.loader__ring--3 {
  inset: 14px;
  border-top-color: transparent;
  border-bottom-color: var(--magenta);
  animation-duration: 2s;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

.loader__status {
  font-family: var(--font-display);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.22em;
  color: var(--accent);
  margin-bottom: 0.85rem;
  text-shadow: 0 0 10px var(--accent-glow);
  text-align: center;
}

.loader__log {
  font-size: 0.65rem;
  color: var(--text-dim);
  text-align: center;
  width: 100%;
  max-width: 260px;
  font-family: var(--font-mono);
  height: 1.4em;
  overflow: hidden;
}

.log-line {
  display: block;
  animation: log-fade 0.3s ease-in;
}

@keyframes log-fade {
  from { opacity: 0; transform: translateX(-10px); }
  to { opacity: 1; transform: translateX(0); }
}

/* Success */

.result__success img {
  max-width: 100%;
  max-height: 320px;
  object-fit: contain;
  border: 1px solid var(--accent);
  box-shadow: 0 0 30px rgba(0, 255, 255, 0.15);
  animation: reveal 0.6s ease-out;
}

@keyframes reveal {
  from {
    opacity: 0;
    transform: scale(0.95);
    filter: hue-rotate(180deg) brightness(2);
  }
  to {
    opacity: 1;
    transform: scale(1);
    filter: hue-rotate(0) brightness(1);
  }
}

.result__actions {
  display: flex;
  gap: 0.6rem;
  margin-top: 1rem;
  flex-wrap: wrap;
  justify-content: center;
}

.btn-action {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.7rem 0.95rem;
  background: transparent;
  border: 1px solid var(--border-glow);
  color: var(--text);
  font-family: var(--font-mono);
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-decoration: none;
  cursor: pointer;
  transition: all 0.2s;
  min-height: 40px;
}

.btn-action:active {
  border-color: var(--accent);
  color: var(--accent);
  background: var(--accent-soft);
}

/* Error */

.error-box {
  text-align: center;
  padding: 1.25rem;
  border: 1px solid var(--error);
  background: rgba(255, 51, 85, 0.05);
  max-width: 320px;
}

.error-tag {
  display: inline-block;
  font-size: 0.65rem;
  letter-spacing: 0.22em;
  color: var(--error);
  margin-bottom: 0.65rem;
  font-weight: 700;
}

.error-message {
  font-size: 0.8rem;
  color: var(--text);
  margin-bottom: 0.85rem;
  line-height: 1.5;
}

/* ============================================================
   FOOTER
   ============================================================ */

.footer {
  position: relative;
  z-index: 5;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 1rem 1.1rem calc(1rem + var(--safe-bottom));
  border-top: 1px solid var(--border);
  font-size: 0.6rem;
  letter-spacing: 0.18em;
  color: var(--text-muted);
  gap: 0.4rem;
  text-align: center;
}

.footer strong {
  color: var(--accent);
  font-weight: 700;
}

/* ============================================================
   TABLET (>= 640px)
   ============================================================ */

@media (min-width: 640px) {
  .header { padding: 1.25rem 1.75rem; }
  .header__brand { font-size: 0.8rem; }
  .header__brand .brand-text { letter-spacing: 0.3em; }
  .header__status { font-size: 0.7rem; }

  .main { padding: 2.5rem 1.75rem; }
  .hero { margin-bottom: 3rem; }
  .hero__kicker { font-size: 0.7rem; }
  .hero__subtitle { font-size: 0.9rem; }

  .panel { padding: 1.5rem; }
  .panel__label { font-size: 0.7rem; margin-bottom: 1.5rem; padding-bottom: 1rem; }

  .dropzone { min-height: 300px; }
  .dropzone__icon { width: 60px; height: 60px; }
  .dropzone__title { font-size: 1rem; }
  .dropzone__subtitle { font-size: 0.8rem; }

  .btn-generate {
    font-size: 0.85rem;
    letter-spacing: 0.25em;
    padding: 1.1rem 1.5rem;
  }

  .result { min-height: 320px; }
  .placeholder-frame { max-width: 260px; }

  .loader { width: 80px; height: 80px; }
  .loader__status { font-size: 0.9rem; }

  .footer {
    flex-direction: row;
    justify-content: space-between;
    padding: 1.5rem 1.75rem;
    font-size: 0.7rem;
  }
}

/* ============================================================
   DESKTOP (>= 900px) - 2 columnas
   ============================================================ */

@media (min-width: 900px) {
  .main {
    max-width: 1400px;
    padding: 3rem 2.5rem;
  }
  .header,
  .footer {
    padding-left: 2.5rem;
    padding-right: 2.5rem;
  }

  .hero { margin-bottom: 4rem; }
  .hero__title { font-size: clamp(2.5rem, 8vw, 5.5rem); }
  .hero__kicker { font-size: 0.75rem; letter-spacing: 0.3em; }
  .hero__subtitle { font-size: 0.95rem; }

  .app {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
    align-items: start;
    max-width: none;
  }

  .panel { min-height: 540px; }

  .grid-bg { background-size: 60px 60px; }

  /* En desktop sí tenemos hover */
  .dropzone:hover {
    border-color: var(--accent);
    background: rgba(0, 255, 255, 0.03);
    box-shadow: inset 0 0 30px rgba(0, 255, 255, 0.05);
  }
  .dropzone:hover .dropzone__empty {
    color: var(--accent);
  }
  .btn-generate:not(:disabled):hover {
    background: var(--accent);
    color: var(--bg-deep);
    box-shadow: 0 0 20px var(--accent-glow), inset 0 0 10px rgba(0, 0, 0, 0.3);
  }
  .btn-generate:not(:disabled):hover::before {
    transform: translateX(100%);
  }
  .btn-action:hover {
    border-color: var(--accent);
    color: var(--accent);
    background: var(--accent-soft);
  }
  .dropzone__clear:hover {
    border-color: var(--error);
    color: var(--error);
  }
}