/* ============================================================
   🌸 Fundamentos de Programación 2026 — Estilos Globales
   ============================================================ */

/* ─── Google Fonts (cargadas en HTML) ─── */
/* Quicksand: UI principal  |  Fira Code: bloques de código */

/* ─── Reset & Base ─── */
* { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
  font-family: 'Quicksand', sans-serif;
  background: linear-gradient(135deg, #fce4ec 0%, #e1bee7 30%, #b3e5fc 60%, #c8e6c9 100%);
  min-height: 100vh;
  color: #4a4a4a;
}

/* ─── Kawaii Color Palette (CSS vars) ─── */
:root {
  --kw-pink:    #fce4ec;
  --kw-rose:    #f8bbd0;
  --kw-lilac:   #e1bee7;
  --kw-mint:    #c8e6c9;
  --kw-sky:     #b3e5fc;
  --kw-peach:   #ffe0b2;
  --kw-cream:   #fffde7;
  --kw-deep:    #ad1457;
  --kw-purple:  #7b1fa2;
  --kw-text:    #4a4a4a;
  --kw-correct: #66bb6a;
  --kw-wrong:   #ef5350;
  --kw-glass:   rgba(255,255,255,0.82);
  --kw-glass-border: rgba(255,255,255,0.5);
  --kw-shadow:  rgba(173,20,87,0.08);
  --kw-radius:  1.2rem;
}

/* ─── Floating Background Shapes ─── */
.bg-shape {
  position: fixed;
  border-radius: 50%;
  opacity: 0.12;
  pointer-events: none;
  z-index: 0;
  animation: floaty 8s ease-in-out infinite alternate;
}
@keyframes floaty {
  0%   { transform: translateY(0) rotate(0deg) scale(1); }
  100% { transform: translateY(-30px) rotate(15deg) scale(1.05); }
}
.bg-shape:nth-child(2) { animation-delay: -2s; animation-duration: 10s; }
.bg-shape:nth-child(3) { animation-delay: -4s; animation-duration: 12s; }
.bg-shape:nth-child(4) { animation-delay: -1s; animation-duration: 9s; }

/* ─── Glass Card ─── */
.card {
  background: var(--kw-glass);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 2px solid var(--kw-glass-border);
  border-radius: var(--kw-radius);
  box-shadow: 0 8px 32px var(--kw-shadow);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}
.card:hover {
  transform: translateY(-3px);
  box-shadow: 0 12px 40px rgba(173,20,87,0.12);
}

/* ─── Code Block Overrides (Prism) ─── */
pre[class*="language-"] {
  border-radius: 0.8rem !important;
  font-family: 'Fira Code', monospace !important;
  font-size: 0.92rem !important;
  margin: 0 !important;
}
code[class*="language-"] {
  font-family: 'Fira Code', monospace !important;
}

/* ─── Quiz Option Buttons ─── */
.option-btn {
  background: rgba(255,255,255,0.7);
  border: 2px solid var(--kw-lilac);
  border-radius: 0.8rem;
  padding: 0.8rem 1.2rem;
  cursor: pointer;
  transition: all 0.25s ease;
  text-align: left;
  width: 100%;
  font-family: 'Quicksand', sans-serif;
  font-size: 0.95rem;
  color: var(--kw-text);
}
.option-btn:hover:not(.selected):not(.disabled) {
  background: var(--kw-rose);
  border-color: #f48fb1;
  transform: scale(1.015);
}
.option-btn.correct {
  background: var(--kw-mint);
  border-color: var(--kw-correct);
  color: #2e7d32;
  font-weight: 600;
}
.option-btn.wrong {
  background: #ffcdd2;
  border-color: var(--kw-wrong);
  color: #c62828;
}
.option-btn.disabled {
  cursor: default;
  opacity: 0.7;
}
.option-btn.reveal-correct {
  background: var(--kw-mint);
  border-color: var(--kw-correct);
  color: #2e7d32;
  font-weight: 600;
}

/* ─── Tab Buttons ─── */
.tab-btn {
  padding: 0.6rem 1.5rem;
  border-radius: 1rem 1rem 0 0;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.25s ease;
  border: 2px solid transparent;
  border-bottom: none;
  background: rgba(255,255,255,0.4);
  color: var(--kw-text);
  font-family: 'Quicksand', sans-serif;
}
.tab-btn.active {
  background: rgba(255,255,255,0.85);
  border-color: var(--kw-rose);
  color: var(--kw-deep);
}
.tab-btn:hover:not(.active) {
  background: rgba(255,255,255,0.6);
}

/* ─── Progress Bar ─── */
.progress-fill {
  transition: width 0.5s ease;
}

/* ─── Mermaid Overrides ─── */
.mermaid svg { max-width: 100%; }

/* ─── Animations ─── */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(20px); }
  to   { opacity: 1; transform: translateY(0); }
}
.fade-in-up {
  animation: fadeInUp 0.5s ease forwards;
}

@keyframes bounce-emoji {
  0%, 100% { transform: scale(1); }
  50%      { transform: scale(1.3); }
}
.bounce {
  display: inline-block;
  animation: bounce-emoji 0.5s ease;
}

@keyframes confetti-fall {
  0%   { transform: translateY(-10px) rotate(0deg); opacity: 1; }
  100% { transform: translateY(40px) rotate(360deg); opacity: 0; }
}
.confetti-piece {
  animation: confetti-fall 1s ease-out forwards;
}

/* ─── Documentation Section ─── */
.doc-section {
  background: var(--kw-glass);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 2px solid var(--kw-glass-border);
  border-radius: var(--kw-radius);
  box-shadow: 0 8px 32px var(--kw-shadow);
  padding: 2rem;
  margin-bottom: 1.5rem;
}
.doc-section h2 {
  color: var(--kw-deep);
  font-weight: 700;
  font-size: 1.4rem;
  margin-bottom: 0.8rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}
.doc-section h3 {
  color: var(--kw-purple);
  font-weight: 600;
  font-size: 1.1rem;
  margin-top: 1.2rem;
  margin-bottom: 0.5rem;
}
.doc-section p, .doc-section li {
  color: var(--kw-text);
  line-height: 1.7;
  font-size: 0.95rem;
}
.doc-section ul {
  padding-left: 1.2rem;
  list-style: none;
}
.doc-section ul li::before {
  content: '🌸 ';
}
.doc-section code {
  background: var(--kw-pink);
  color: var(--kw-deep);
  padding: 0.15rem 0.4rem;
  border-radius: 0.3rem;
  font-family: 'Fira Code', monospace;
  font-size: 0.88rem;
}
.doc-section .code-example {
  background: #2d2d2d;
  color: #ccc;
  border-radius: 0.8rem;
  padding: 1rem 1.2rem;
  font-family: 'Fira Code', monospace;
  font-size: 0.88rem;
  margin: 0.8rem 0;
  overflow-x: auto;
  line-height: 1.6;
}
.doc-section .tip-box {
  background: linear-gradient(135deg, #fffde7, #fff9c4);
  border: 2px solid #ffe082;
  border-radius: 0.8rem;
  padding: 1rem 1.2rem;
  margin: 1rem 0;
  font-size: 0.9rem;
}
.doc-section .deep-box {
  background: linear-gradient(135deg, #e1bee7, #f3e5f5);
  border: 2px solid #ce93d8;
  border-radius: 0.8rem;
  padding: 1rem 1.2rem;
  margin: 1rem 0;
  font-size: 0.9rem;
}
.doc-section a {
  color: var(--kw-purple);
  text-decoration: underline;
  font-weight: 600;
  transition: color 0.2s;
}
.doc-section a:hover {
  color: var(--kw-deep);
}

/* ─── Doc Tables ─── */
.doc-table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
  margin: 0.8rem 0;
  border-radius: 0.6rem;
  overflow: hidden;
  font-size: 0.9rem;
}
.doc-table th {
  background: var(--kw-rose);
  color: var(--kw-deep);
  font-weight: 700;
  padding: 0.6rem 1rem;
  text-align: left;
}
.doc-table td {
  padding: 0.5rem 1rem;
  border-bottom: 1px solid var(--kw-pink);
}
.doc-table tr:nth-child(even) td {
  background: rgba(248,187,208,0.1);
}
.doc-table tr:last-child td {
  border-bottom: none;
}

/* ============================================================
   🗓️ DIARY / JOURNAL STYLES
   ============================================================ */

/* ─── Diary Header ─── */
.diary-header {
  text-align: center;
  padding: 3rem 1rem 1.5rem;
}
.diary-header h1 {
  font-size: 2.8rem;
  font-weight: 700;
  color: var(--kw-deep);
  margin-bottom: 0.5rem;
  letter-spacing: -0.5px;
}
.diary-header .subtitle {
  font-size: 1.1rem;
  color: rgba(74,74,74,0.6);
  max-width: 500px;
  margin: 0 auto;
  line-height: 1.6;
}

/* ─── Search & Filter Bar ─── */
.search-bar {
  max-width: 700px;
  margin: 0 auto 2rem;
  padding: 0 1rem;
}
.search-input-wrap {
  position: relative;
  margin-bottom: 1rem;
}
.search-input-wrap .icon {
  position: absolute;
  left: 1.2rem;
  top: 50%;
  transform: translateY(-50%);
  font-size: 1.1rem;
  pointer-events: none;
}
.search-input {
  width: 100%;
  padding: 0.9rem 1.2rem 0.9rem 3rem;
  border: 2px solid var(--kw-glass-border);
  border-radius: 1rem;
  background: var(--kw-glass);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  font-family: 'Quicksand', sans-serif;
  font-size: 1rem;
  color: var(--kw-text);
  outline: none;
  transition: border-color 0.3s, box-shadow 0.3s;
}
.search-input:focus {
  border-color: var(--kw-rose);
  box-shadow: 0 0 0 4px rgba(248,187,208,0.3);
}
.search-input::placeholder {
  color: rgba(74,74,74,0.4);
}

/* ─── Tag Filter Pills ─── */
.tag-filters {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
  justify-content: center;
}
.tag-pill {
  padding: 0.4rem 1rem;
  border-radius: 2rem;
  border: 2px solid var(--kw-glass-border);
  background: rgba(255,255,255,0.5);
  font-family: 'Quicksand', sans-serif;
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.25s ease;
  color: var(--kw-text);
}
.tag-pill:hover {
  background: rgba(255,255,255,0.8);
  border-color: var(--kw-rose);
}
.tag-pill.active {
  background: var(--kw-rose);
  border-color: #f48fb1;
  color: var(--kw-deep);
}

/* ─── Timeline ─── */
.timeline {
  max-width: 700px;
  margin: 0 auto;
  padding: 0 1rem 4rem;
  position: relative;
}
.timeline::before {
  content: '';
  position: absolute;
  left: 2rem;
  top: 0;
  bottom: 0;
  width: 3px;
  background: linear-gradient(180deg, var(--kw-rose), var(--kw-lilac), var(--kw-sky));
  border-radius: 3px;
}

/* ─── Diary Entry Card ─── */
.diary-entry {
  position: relative;
  margin-left: 4rem;
  margin-bottom: 1.5rem;
  background: var(--kw-glass);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 2px solid var(--kw-glass-border);
  border-radius: var(--kw-radius);
  box-shadow: 0 8px 32px var(--kw-shadow);
  padding: 1.5rem;
  cursor: pointer;
  transition: all 0.3s ease;
  text-decoration: none;
  color: inherit;
  display: block;
}
.diary-entry:hover {
  transform: translateY(-3px) translateX(4px);
  box-shadow: 0 12px 40px rgba(173,20,87,0.14);
  border-color: var(--kw-rose);
}

/* Timeline dot */
.diary-entry::before {
  content: '';
  position: absolute;
  left: -2.75rem;
  top: 1.6rem;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--kw-rose);
  border: 3px solid white;
  box-shadow: 0 2px 8px rgba(173,20,87,0.2);
  transition: transform 0.3s ease, background 0.3s ease;
}
.diary-entry:hover::before {
  transform: scale(1.3);
  background: var(--kw-deep);
}

.diary-entry .entry-date {
  font-size: 0.78rem;
  color: rgba(74,74,74,0.45);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 0.3rem;
}
.diary-entry .entry-title {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--kw-deep);
  margin-bottom: 0.4rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}
.diary-entry .entry-emoji {
  font-size: 1.5rem;
}
.diary-entry .entry-desc {
  font-size: 0.92rem;
  color: rgba(74,74,74,0.7);
  line-height: 1.5;
  margin-bottom: 0.8rem;
}
.diary-entry .entry-tags {
  display: flex;
  gap: 0.4rem;
  flex-wrap: wrap;
}
.entry-tag {
  padding: 0.2rem 0.6rem;
  border-radius: 1rem;
  font-size: 0.72rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}
.entry-tag.python {
  background: #fff9c4;
  color: #f57f17;
  border: 1px solid #ffe082;
}
.entry-tag.flow {
  background: #e3f2fd;
  color: #1565c0;
  border: 1px solid #90caf9;
}
.entry-tag.docs {
  background: #f3e5f5;
  color: #7b1fa2;
  border: 1px solid #ce93d8;
}
.entry-tag.nuevo {
  background: #e8f5e9;
  color: #2e7d32;
  border: 1px solid #a5d6a7;
}

/* ─── Empty State ─── */
.empty-state {
  text-align: center;
  padding: 3rem 1rem;
}
.empty-state .emoji {
  font-size: 3.5rem;
  margin-bottom: 1rem;
}
.empty-state p {
  color: rgba(74,74,74,0.5);
  font-size: 1rem;
}

/* ─── Back Button ─── */
.back-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.6rem 1.2rem;
  border-radius: 2rem;
  background: var(--kw-glass);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 2px solid var(--kw-glass-border);
  font-family: 'Quicksand', sans-serif;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--kw-deep);
  text-decoration: none;
  cursor: pointer;
  transition: all 0.25s ease;
}
.back-btn:hover {
  background: var(--kw-rose);
  border-color: #f48fb1;
  transform: translateX(-3px);
}

/* ─── Page Container ─── */
.page-container {
  max-width: 800px;
  margin: 0 auto;
  padding: 1.5rem 1rem 4rem;
}
.page-header {
  padding: 1.5rem 0 1rem;
}

/* ─── Footer ─── */
.site-footer {
  text-align: center;
  padding: 2rem 1rem;
  font-size: 0.85rem;
  color: rgba(74,74,74,0.35);
}

/* ─── Utility ─── */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0,0,0,0);
  border: 0;
}

/* ─── Responsive ─── */
@media (max-width: 640px) {
  .diary-header h1 { font-size: 2rem; }
  .diary-entry { margin-left: 3rem; padding: 1.2rem; }
  .timeline::before { left: 1.2rem; }
  .diary-entry::before { left: -2.3rem; }
  .diary-entry .entry-title { font-size: 1.1rem; }
}