/* ===================================================
   ملف التنسيق الرئيسي - محاكاة نسخ mRNA
   =================================================== */

/* ---- المتغيرات الأساسية ---- */
:root {
  --bg-deep:     #020d18;
  --bg-mid:      #051a2e;
  --bg-card:     #0a2540;
  --bg-card2:    #0d2e4a;
  --border:      #1a4a72;
  --accent:      #00d4ff;
  --accent2:     #00ff9d;
  --accent3:     #ff6b6b;
  --accent4:     #ffd700;
  --text-main:   #e8f4fd;
  --text-muted:  #7baec8;
  --success:     #00e676;
  --error:       #ff5252;
  --warning:     #ffab40;
  --shadow:      0 8px 32px rgba(0, 212, 255, 0.15);
  --glow-green:  0 0 20px rgba(0, 230, 118, 0.6);
  --glow-blue:   0 0 20px rgba(0, 212, 255, 0.6);
  --glow-red:    0 0 20px rgba(255, 82, 82, 0.6);
  --radius:      14px;
  --radius-sm:   8px;
  --font-ar:     'Segoe UI', 'Tahoma', 'Arial', sans-serif;
}

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

html { font-size: 16px; scroll-behavior: smooth; }

body {
  font-family: var(--font-ar);
  background: var(--bg-deep);
  color: var(--text-main);
  min-height: 100vh;
  direction: rtl;
  overflow-x: hidden;
}

/* ===================================================
   الشاشات العامة
   =================================================== */
.screen { display: none; min-height: 100vh; }
.screen.active { display: flex; }

/* ===================================================
   شاشة البداية
   =================================================== */
#screen-intro {
  position: relative;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  background: radial-gradient(ellipse at 50% 0%, #0a2540 0%, #020d18 70%);
}

.intro-bg {
  position: absolute; inset: 0;
  pointer-events: none;
  overflow: hidden;
}

/* خلفية حلزون DNA متحركة */
.dna-helix-bg {
  position: absolute;
  width: 100%; height: 100%;
  background:
    repeating-linear-gradient(
      90deg,
      transparent 0px,
      transparent 48px,
      rgba(0,212,255,0.04) 48px,
      rgba(0,212,255,0.04) 50px
    ),
    repeating-linear-gradient(
      180deg,
      transparent 0px,
      transparent 48px,
      rgba(0,255,157,0.03) 48px,
      rgba(0,255,157,0.03) 50px
    );
  animation: grid-drift 20s linear infinite;
}
@keyframes grid-drift {
  from { transform: translate(0,0); }
  to   { transform: translate(50px, 50px); }
}

.intro-content {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 20px;
  text-align: center;
  padding: 40px 20px;
  max-width: 640px;
  width: 100%;
}

.cell-nucleus-icon {
  font-size: 72px;
  animation: pulse-icon 2.5s ease-in-out infinite;
  filter: drop-shadow(0 0 20px rgba(0,212,255,0.8));
}
@keyframes pulse-icon {
  0%,100% { transform: scale(1); }
  50% { transform: scale(1.08); }
}

.game-title {
  font-size: clamp(28px, 6vw, 52px);
  font-weight: 800;
  line-height: 1.2;
  color: var(--text-main);
  letter-spacing: -0.5px;
}
.game-title .highlight {
  color: var(--accent);
  text-shadow: var(--glow-blue);
}

.game-subtitle {
  font-size: clamp(14px, 2.5vw, 18px);
  color: var(--text-muted);
  max-width: 400px;
}

.intro-features {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: center;
}

.feature-chip {
  background: rgba(0,212,255,0.1);
  border: 1px solid rgba(0,212,255,0.3);
  border-radius: 50px;
  padding: 6px 16px;
  font-size: 13px;
  color: var(--accent);
}

.target-audience {
  font-size: 12px;
  color: var(--text-muted);
  opacity: 0.7;
}

/* ===================================================
   الأزرار
   =================================================== */
.btn-primary {
  background: linear-gradient(135deg, var(--accent) 0%, #0096c7 100%);
  border: none;
  border-radius: 50px;
  color: #fff;
  cursor: pointer;
  font-family: var(--font-ar);
  font-size: 18px;
  font-weight: 700;
  padding: 14px 48px;
  transition: transform 0.15s, box-shadow 0.15s;
  box-shadow: 0 4px 24px rgba(0,212,255,0.4);
}
.btn-primary:hover  { transform: translateY(-2px); box-shadow: 0 8px 32px rgba(0,212,255,0.6); }
.btn-primary:active { transform: scale(0.97); }

.btn-secondary {
  background: transparent;
  border: 2px solid var(--accent);
  border-radius: 50px;
  color: var(--accent);
  cursor: pointer;
  font-family: var(--font-ar);
  font-size: 15px;
  font-weight: 600;
  padding: 10px 32px;
  transition: background 0.15s, color 0.15s;
}
.btn-secondary:hover { background: var(--accent); color: var(--bg-deep); }

.btn-action {
  background: rgba(0,212,255,0.1);
  border: 1px solid rgba(0,212,255,0.3);
  border-radius: var(--radius-sm);
  color: var(--accent);
  cursor: pointer;
  font-family: var(--font-ar);
  font-size: 14px;
  font-weight: 600;
  padding: 8px 20px;
  transition: all 0.15s;
}
.btn-action:hover { background: rgba(0,212,255,0.2); border-color: var(--accent); }

/* ===================================================
   واجهة اللعبة - Header
   =================================================== */
#screen-game {
  flex-direction: column;
  background: var(--bg-deep);
}

.game-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 24px;
  background: var(--bg-mid);
  border-bottom: 1px solid var(--border);
  gap: 16px;
  flex-shrink: 0;
  flex-wrap: wrap;
}

.game-logo {
  font-size: 18px;
  font-weight: 800;
  color: var(--accent);
  white-space: nowrap;
}

.progress-container {
  display: flex;
  align-items: center;
  gap: 10px;
  flex: 1;
  max-width: 380px;
}
.progress-label { font-size: 12px; color: var(--text-muted); white-space: nowrap; }
.progress-bar-wrap {
  flex: 1;
  height: 8px;
  background: rgba(255,255,255,0.08);
  border-radius: 50px;
  overflow: hidden;
}
.progress-bar {
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, var(--accent2), var(--accent));
  border-radius: 50px;
  transition: width 0.6s cubic-bezier(0.4,0,0.2,1);
}
.progress-text { font-size: 12px; color: var(--text-muted); white-space: nowrap; }

.score-box, .timer-box {
  display: flex;
  align-items: center;
  gap: 6px;
  background: rgba(0,212,255,0.08);
  border: 1px solid rgba(0,212,255,0.2);
  border-radius: 50px;
  padding: 6px 14px;
}
.score-icon, .timer-icon { font-size: 16px; }
.score-value, .timer-value { font-size: 16px; font-weight: 700; color: var(--accent4); }
.header-left { display: flex; gap: 10px; align-items: center; }

/* ===================================================
   منطقة المحتوى الرئيسية
   =================================================== */
.game-main {
  flex: 1;
  padding: 24px;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 24px;
}

/* ===================================================
   شريط الرسائل
   =================================================== */
.message-bar {
  min-height: 50px;
  padding: 12px 24px;
  text-align: center;
  font-size: 15px;
  font-weight: 600;
  border-top: 1px solid var(--border);
  background: var(--bg-mid);
  transition: all 0.3s;
  display: flex;
  align-items: center;
  justify-content: center;
}
.message-bar.success { color: var(--success); background: rgba(0,230,118,0.08); }
.message-bar.error   { color: var(--error);   background: rgba(255,82,82,0.08);  }
.message-bar.info    { color: var(--accent);  background: rgba(0,212,255,0.08);  }

/* ===================================================
   بطاقات المرحلة العامة
   =================================================== */
.phase-header {
  text-align: center;
  max-width: 700px;
  width: 100%;
}
.phase-num {
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 2px;
  color: var(--accent);
  margin-bottom: 6px;
}
.phase-title {
  font-size: clamp(20px,4vw,32px);
  font-weight: 800;
  color: var(--text-main);
  margin-bottom: 8px;
}
.phase-desc {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.7;
}

/* ===================================================
   المرحلة الأولى: مكونات النسخ
   =================================================== */
.nucleus-scene {
  position: relative;
  width: 100%;
  max-width: 700px;
  background: radial-gradient(ellipse at 50% 40%, #0d2e4a 0%, #051a2e 80%);
  border: 2px solid var(--border);
  border-radius: 20px;
  padding: 32px;
  min-height: 420px;
  overflow: hidden;
}
.nucleus-label {
  position: absolute;
  top: 12px; right: 16px;
  font-size: 11px;
  color: var(--text-muted);
  letter-spacing: 1px;
}

/* DNA مزدوج */
.dna-visual {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0;
  margin: 20px auto;
  width: fit-content;
}
.dna-strand {
  display: flex;
  align-items: center;
  gap: 0;
}
.dna-base {
  width: 36px; height: 36px;
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 13px; font-weight: 700;
  cursor: default;
  border: 2px solid transparent;
  position: relative;
  transition: transform 0.2s;
}
.dna-base.A { background: rgba(255,107,107,0.2); border-color: #ff6b6b; color: #ff6b6b; }
.dna-base.T { background: rgba(0,212,255,0.2);   border-color: #00d4ff; color: #00d4ff; }
.dna-base.C { background: rgba(255,215,0,0.2);   border-color: #ffd700; color: #ffd700; }
.dna-base.G { background: rgba(0,255,157,0.2);   border-color: #00ff9d; color: #00ff9d; }
.dna-connector {
  width: 8px; height: 20px;
  background: linear-gradient(180deg, rgba(0,212,255,0.3), rgba(0,255,157,0.3));
  margin: 0 auto;
}
.dna-gap { width: 8px; }

/* عناصر قابلة للنقر */
.clickable-element {
  cursor: pointer;
  border: 2px solid transparent;
  border-radius: var(--radius-sm);
  padding: 10px 16px;
  transition: all 0.2s;
  display: flex;
  align-items: center;
  gap: 10px;
}
.clickable-element:hover {
  border-color: var(--accent);
  background: rgba(0,212,255,0.1);
  transform: translateY(-2px);
  box-shadow: var(--glow-blue);
}

/* بطاقات العناصر في المرحلة 1 */
.components-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 14px;
  width: 100%;
  max-width: 700px;
}
.component-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px;
  cursor: pointer;
  text-align: center;
  transition: all 0.25s;
}
.component-card:hover {
  border-color: var(--accent);
  background: var(--bg-card2);
  transform: translateY(-4px);
  box-shadow: var(--shadow);
}
.component-card .card-icon  { font-size: 36px; margin-bottom: 10px; }
.component-card .card-name  { font-size: 14px; font-weight: 700; color: var(--accent); }
.component-card .card-hint  { font-size: 12px; color: var(--text-muted); margin-top: 4px; }

/* ===================================================
   المرحلة الثانية: بناء معقد البدء
   =================================================== */
.complex-area {
  display: flex;
  flex-direction: column;
  gap: 20px;
  width: 100%;
  max-width: 760px;
}

.promoter-track {
  background: var(--bg-card);
  border: 2px dashed var(--border);
  border-radius: var(--radius);
  padding: 20px;
  min-height: 90px;
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
  position: relative;
}
.promoter-label {
  position: absolute;
  top: -12px; right: 16px;
  background: var(--bg-mid);
  padding: 2px 10px;
  font-size: 12px;
  color: var(--accent);
  border-radius: 50px;
  border: 1px solid var(--border);
}

.factors-pool {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  justify-content: center;
}

.factor-card {
  background: linear-gradient(135deg, var(--bg-card) 0%, var(--bg-card2) 100%);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 12px 18px;
  cursor: grab;
  text-align: center;
  transition: all 0.2s;
  user-select: none;
  min-width: 90px;
}
.factor-card:hover { border-color: var(--accent); transform: scale(1.05); box-shadow: var(--shadow); }
.factor-card:active { cursor: grabbing; transform: scale(0.98); }
.factor-card.placed {
  opacity: 0.4;
  pointer-events: none;
  cursor: default;
}
.factor-card.correct {
  border-color: var(--success);
  background: rgba(0,230,118,0.15);
  animation: glow-success 1s ease;
}
.factor-card.wrong {
  animation: shake 0.5s ease;
  border-color: var(--error);
}
.factor-name { font-size: 13px; font-weight: 700; color: var(--accent); }
.factor-desc { font-size: 11px; color: var(--text-muted); margin-top: 4px; }

.placed-factor {
  background: rgba(0,230,118,0.15);
  border: 2px solid var(--success);
  border-radius: var(--radius-sm);
  padding: 8px 14px;
  font-size: 13px;
  font-weight: 700;
  color: var(--success);
  animation: pop-in 0.3s ease;
}

@keyframes glow-success {
  0%   { box-shadow: 0 0 0 0 rgba(0,230,118,0.8); }
  50%  { box-shadow: var(--glow-green); }
  100% { box-shadow: 0 0 0 0 transparent; }
}
@keyframes shake {
  0%,100% { transform: translateX(0); }
  20%     { transform: translateX(-8px); }
  40%     { transform: translateX(8px); }
  60%     { transform: translateX(-5px); }
  80%     { transform: translateX(5px); }
}
@keyframes pop-in {
  from { transform: scale(0.5); opacity:0; }
  to   { transform: scale(1);   opacity:1; }
}

/* ===================================================
   المرحلة الثالثة: ترتيب المراحل
   =================================================== */
.sorting-area {
  display: flex;
  gap: 20px;
  flex-wrap: wrap;
  justify-content: center;
  width: 100%;
  max-width: 760px;
}
.cards-pool-wrap, .sort-target-wrap {
  flex: 1;
  min-width: 280px;
}
.pool-title, .target-title {
  font-size: 14px;
  font-weight: 700;
  color: var(--text-muted);
  margin-bottom: 12px;
  text-align: center;
}
.sort-cards-pool {
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.sort-target {
  display: flex;
  flex-direction: column;
  gap: 6px;
  min-height: 300px;
  background: var(--bg-card);
  border: 2px dashed var(--border);
  border-radius: var(--radius);
  padding: 12px;
}
.sort-card {
  background: var(--bg-card2);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 12px 16px;
  cursor: grab;
  font-size: 13px;
  color: var(--text-main);
  transition: all 0.2s;
  user-select: none;
  display: flex;
  align-items: center;
  gap: 8px;
}
.sort-card:hover { border-color: var(--accent); background: rgba(0,212,255,0.08); }
.sort-card:active { cursor: grabbing; }
.sort-card.correct {
  border-color: var(--success);
  background: rgba(0,230,118,0.12);
  color: var(--success);
  cursor: default;
}
.sort-card.wrong {
  animation: shake 0.4s ease;
  border-color: var(--error);
}
.sort-num {
  width: 24px; height: 24px;
  border-radius: 50%;
  background: rgba(0,212,255,0.2);
  color: var(--accent);
  font-size: 12px;
  font-weight: 700;
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
}
.sort-card.correct .sort-num { background: rgba(0,230,118,0.2); color: var(--success); }

/* ===================================================
   المرحلة الرابعة: بناء mRNA
   =================================================== */
.mrna-builder {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 20px;
  width: 100%;
  max-width: 760px;
}
.dna-template-strip {
  display: flex;
  align-items: center;
  gap: 4px;
  flex-wrap: wrap;
  justify-content: center;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px;
  width: 100%;
}
.strand-label {
  font-size: 11px;
  color: var(--text-muted);
  width: 100%;
  text-align: center;
  margin-bottom: 6px;
}
.base-slot {
  width: 40px; height: 40px;
  border-radius: var(--radius-sm);
  display: flex; align-items: center; justify-content: center;
  font-size: 15px; font-weight: 700;
  position: relative;
}
.base-slot.active-slot {
  animation: pulse-slot 1s ease-in-out infinite;
  box-shadow: 0 0 12px rgba(0,212,255,0.6);
}
@keyframes pulse-slot {
  0%,100% { transform: scale(1); }
  50%     { transform: scale(1.1); }
}

.mrna-strip {
  display: flex;
  align-items: center;
  gap: 4px;
  flex-wrap: wrap;
  justify-content: center;
  background: rgba(0,255,157,0.05);
  border: 1px solid rgba(0,255,157,0.2);
  border-radius: var(--radius);
  padding: 16px;
  width: 100%;
  min-height: 72px;
}
.mrna-base-slot {
  width: 40px; height: 40px;
  border-radius: var(--radius-sm);
  display: flex; align-items: center; justify-content: center;
  font-size: 15px; font-weight: 700;
  border: 2px dashed rgba(0,255,157,0.2);
  transition: all 0.3s;
}
.mrna-base-slot.filled {
  border-style: solid;
  animation: pop-in 0.3s ease;
}
.mrna-base-slot.U { background: rgba(255,107,107,0.2); border-color: #ff6b6b; color: #ff6b6b; }
.mrna-base-slot.A { background: rgba(0,212,255,0.2);   border-color: #00d4ff; color: #00d4ff; }
.mrna-base-slot.G { background: rgba(0,255,157,0.2);   border-color: #00ff9d; color: #00ff9d; }
.mrna-base-slot.C { background: rgba(255,215,0,0.2);   border-color: #ffd700; color: #ffd700; }

.nucleotide-buttons {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  justify-content: center;
}
.nuc-btn {
  width: 70px; height: 70px;
  border-radius: 50%;
  border: 3px solid;
  font-size: 24px; font-weight: 800;
  cursor: pointer;
  transition: all 0.15s;
  display: flex; align-items: center; justify-content: center;
  font-family: var(--font-ar);
}
.nuc-btn:hover { transform: scale(1.1); }
.nuc-btn:active { transform: scale(0.95); }
.nuc-btn.U { background: rgba(255,107,107,0.15); border-color: #ff6b6b; color: #ff6b6b; }
.nuc-btn.A { background: rgba(0,212,255,0.15);   border-color: #00d4ff; color: #00d4ff; }
.nuc-btn.G { background: rgba(0,255,157,0.15);   border-color: #00ff9d; color: #00ff9d; }
.nuc-btn.C { background: rgba(255,215,0,0.15);   border-color: #ffd700; color: #ffd700; }
.nuc-btn.U:hover { background: rgba(255,107,107,0.3); box-shadow: 0 0 20px rgba(255,107,107,0.5); }
.nuc-btn.A:hover { background: rgba(0,212,255,0.3);   box-shadow: var(--glow-blue); }
.nuc-btn.G:hover { background: rgba(0,255,157,0.3);   box-shadow: var(--glow-green); }
.nuc-btn.C:hover { background: rgba(255,215,0,0.3);   box-shadow: 0 0 20px rgba(255,215,0,0.5); }

.pairing-hint {
  font-size: 13px;
  color: var(--text-muted);
  text-align: center;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 10px 16px;
  width: 100%;
}

/* ===================================================
   المرحلة الخامسة: الاستطالة
   =================================================== */
.elongation-scene {
  width: 100%;
  max-width: 760px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  position: relative;
  min-height: 320px;
  overflow: hidden;
}
.polymerase-track {
  display: flex;
  flex-direction: column;
  gap: 8px;
  align-items: flex-start;
}
.track-row {
  display: flex;
  align-items: center;
  gap: 4px;
  flex-wrap: nowrap;
  overflow: hidden;
}
.track-label {
  font-size: 11px;
  color: var(--text-muted);
  min-width: 90px;
  text-align: right;
}
.polymerase-enzyme {
  background: linear-gradient(135deg, #6c3ce1, #0096c7);
  border-radius: 10px;
  padding: 8px 14px;
  font-size: 13px; font-weight: 700;
  color: #fff;
  transition: transform 0.5s ease;
  white-space: nowrap;
  box-shadow: 0 4px 16px rgba(108,60,225,0.4);
  display: flex; align-items: center; gap: 6px;
  position: relative;
  left: 0;
}

.transcription-bubble {
  background: rgba(255,215,0,0.1);
  border: 2px solid rgba(255,215,0,0.4);
  border-radius: 8px;
  padding: 4px 8px;
  font-size: 11px;
  color: var(--accent4);
  position: absolute;
  top: -30px;
  left: 50%;
  transform: translateX(-50%);
  white-space: nowrap;
}

.elongation-controls {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
}

/* ===================================================
   المرحلة السادسة: الإنهاء
   =================================================== */
.termination-scene {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 20px;
  width: 100%;
  max-width: 640px;
}
.flow-diagram {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0;
  width: 100%;
}
.flow-box {
  background: var(--bg-card2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px 32px;
  text-align: center;
  width: 100%;
  transition: all 0.5s;
}
.flow-box.highlighted {
  border-color: var(--success);
  background: rgba(0,230,118,0.1);
  box-shadow: var(--glow-green);
}
.flow-arrow {
  font-size: 24px;
  color: var(--text-muted);
  margin: 4px 0;
}
.flow-box-title { font-size: 16px; font-weight: 700; color: var(--accent); }
.flow-box-desc  { font-size: 13px; color: var(--text-muted); margin-top: 6px; }

.mrna-product {
  background: linear-gradient(135deg, rgba(0,255,157,0.1), rgba(0,212,255,0.1));
  border: 2px solid var(--accent2);
  border-radius: var(--radius);
  padding: 20px;
  text-align: center;
  width: 100%;
}
.mrna-seq {
  font-size: 14px;
  font-family: monospace;
  color: var(--accent2);
  word-break: break-all;
  letter-spacing: 2px;
  margin-top: 8px;
}

/* ===================================================
   النوافذ المنبثقة
   =================================================== */
.modal-overlay {
  display: none;
  position: fixed; inset: 0;
  background: rgba(0,0,0,0.75);
  backdrop-filter: blur(6px);
  z-index: 1000;
  align-items: center;
  justify-content: center;
  padding: 20px;
}
.modal-overlay.active { display: flex; }

.modal-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 32px;
  max-width: 480px;
  width: 100%;
  text-align: center;
  animation: modal-enter 0.3s cubic-bezier(0.34,1.56,0.64,1);
  box-shadow: 0 20px 60px rgba(0,0,0,0.6);
}
@keyframes modal-enter {
  from { transform: scale(0.7); opacity: 0; }
  to   { transform: scale(1);   opacity: 1; }
}
.modal-icon { font-size: 52px; margin-bottom: 14px; }
.modal-title { font-size: 20px; font-weight: 800; color: var(--accent); margin-bottom: 12px; }
.modal-body  { font-size: 14px; color: var(--text-muted); line-height: 1.8; margin-bottom: 20px; }

/* السؤال */
.quiz-card { text-align: right; }
.quiz-header { display: flex; align-items: center; gap: 10px; margin-bottom: 16px; }
.quiz-icon { font-size: 28px; }
.quiz-title { font-size: 18px; font-weight: 800; color: var(--accent4); }
.quiz-question { font-size: 16px; color: var(--text-main); margin-bottom: 18px; line-height: 1.7; }
.quiz-options { display: flex; flex-direction: column; gap: 10px; }
.quiz-opt {
  background: var(--bg-card2);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 12px 16px;
  cursor: pointer;
  font-size: 14px;
  color: var(--text-main);
  text-align: right;
  transition: all 0.15s;
  font-family: var(--font-ar);
}
.quiz-opt:hover { border-color: var(--accent); background: rgba(0,212,255,0.08); }
.quiz-opt.correct { border-color: var(--success); background: rgba(0,230,118,0.15); color: var(--success); }
.quiz-opt.wrong   { border-color: var(--error);   background: rgba(255,82,82,0.1);  color: var(--error);   animation: shake 0.4s; }

/* ===================================================
   شاشة النتائج
   =================================================== */
#screen-results {
  align-items: center;
  justify-content: center;
  padding: 24px;
  background: radial-gradient(ellipse at 50% 0%, #0a2540 0%, #020d18 70%);
}
.results-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 24px;
  padding: 40px;
  max-width: 540px;
  width: 100%;
  text-align: center;
  animation: modal-enter 0.5s ease;
  box-shadow: 0 20px 60px rgba(0,0,0,0.5);
}
.results-trophy { font-size: 72px; margin-bottom: 10px; animation: bounce-in 0.8s ease; }
@keyframes bounce-in {
  0%   { transform: scale(0) rotate(-20deg); }
  60%  { transform: scale(1.2) rotate(5deg); }
  100% { transform: scale(1) rotate(0); }
}
.results-title { font-size: 26px; font-weight: 800; color: var(--accent); margin-bottom: 16px; }
.achievement-badge {
  display: inline-block;
  background: linear-gradient(135deg, rgba(255,215,0,0.2), rgba(255,215,0,0.1));
  border: 1px solid var(--accent4);
  border-radius: 50px;
  padding: 8px 24px;
  font-size: 16px;
  font-weight: 700;
  color: var(--accent4);
  margin-bottom: 20px;
}
.results-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
  margin-bottom: 28px;
}
.result-item {
  background: var(--bg-card2);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 14px;
  text-align: center;
}
.result-label { font-size: 12px; color: var(--text-muted); display: block; margin-bottom: 6px; }
.result-value { font-size: 22px; font-weight: 800; color: var(--text-main); }
.result-value.accent { color: var(--accent); }
.result-value.green  { color: var(--success); }
.result-value.red    { color: var(--error); }

/* ===================================================
   مؤثرات الاحتفال
   =================================================== */
.confetti-container {
  position: fixed; inset: 0;
  pointer-events: none;
  z-index: 9999;
  overflow: hidden;
}
.confetti-piece {
  position: absolute;
  width: 10px; height: 10px;
  border-radius: 2px;
  animation: confetti-fall 3s ease-in forwards;
}
@keyframes confetti-fall {
  from { transform: translateY(-20px) rotate(0deg); opacity: 1; }
  to   { transform: translateY(110vh) rotate(720deg); opacity: 0; }
}

/* ===================================================
   استجابة الهاتف
   =================================================== */
@media (max-width: 600px) {
  .game-header { padding: 10px 14px; gap: 8px; }
  .game-logo   { font-size: 14px; }
  .game-main   { padding: 14px; }
  .components-grid { grid-template-columns: repeat(2, 1fr); }
  .sorting-area { flex-direction: column; }
  .results-grid { grid-template-columns: 1fr; }
  .nuc-btn { width: 58px; height: 58px; font-size: 20px; }
  .dna-base { width: 30px; height: 30px; font-size: 11px; }
  .mrna-base-slot { width: 30px; height: 30px; font-size: 11px; }
}

/* ===================================================
   مؤثرات إضافية عامة
   =================================================== */
.glow-text { text-shadow: 0 0 12px var(--accent); }

.badge-earned {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(255,215,0,0.15);
  border: 1px solid var(--accent4);
  border-radius: 50px;
  padding: 8px 20px;
  font-size: 15px;
  font-weight: 700;
  color: var(--accent4);
  animation: pop-in 0.4s ease;
}

.info-tooltip {
  font-size: 12px;
  color: var(--accent);
  text-align: center;
  margin-top: 8px;
}

.step-indicator {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  justify-content: center;
}
.step-dot {
  width: 10px; height: 10px;
  border-radius: 50%;
  background: rgba(255,255,255,0.1);
  border: 1px solid var(--border);
  transition: all 0.3s;
}
.step-dot.done { background: var(--success); border-color: var(--success); box-shadow: var(--glow-green); }
.step-dot.active { background: var(--accent); border-color: var(--accent); box-shadow: var(--glow-blue); }

.section-divider {
  width: 100%;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--border), transparent);
  margin: 8px 0;
}

/* لوحة الإرشادات */
.guide-panel {
  background: rgba(0,212,255,0.05);
  border: 1px solid rgba(0,212,255,0.2);
  border-radius: var(--radius-sm);
  padding: 12px 16px;
  font-size: 13px;
  color: var(--text-muted);
  width: 100%;
  max-width: 760px;
  text-align: center;
  line-height: 1.6;
}