/* MB MEDIA — Built for MOHAMAD BASSEM MEFTAH — mftahbassem@gmail.com */
/* MB MEDIA — لغز الـ15 (15-Puzzle). كل القواعد معزولة تحت #mb-app؛
   الاستثناءات الوحيدة: تعريف المتغيرات (بند 3) + @font-face (الخطوط المحلية). */

/* 3. الهوية البصرية — ملزمة بلا تعديل */
:root {
  --navy:  #0E1B2E;
  --cyan:  #17B4D6;
  --white: #FFFFFF;
  --coral: #E8734A;
}

/* 4. الوضع الداكن (الافتراضي) / الفاتح */
:root {
  color-scheme: dark;
  --bg:            var(--navy);
  --fg:            var(--white);
  --bg-soft:       #16233B;
  --bg-softer:     #1C2C47;
  --border:        rgba(255, 255, 255, 0.13);
  --border-strong: rgba(255, 255, 255, 0.30);
  --fg-muted:      #A9B7CC;
  --fg-faint:      #76859E;
  --cyan-ink:      var(--cyan);
  --cyan-soft:     rgba(23, 180, 214, 0.14);
  --cyan-soft-2:   rgba(23, 180, 214, 0.24);
  --coral-hover:   #F0815B;
  --coral-glow:    rgba(232, 115, 74, 0.30);
  --overlay-bg:    rgba(14, 27, 46, 0.82);
  --card-bg:       var(--bg-soft);
  --shadow:        0 18px 40px rgba(0, 0, 0, 0.35);
  --radius:        14px;
  --radius-lg:     18px;

  --board-bg:      #131F33;
  --tile-bg:       linear-gradient(135deg, #17B4D6, #1499B8);
  --tile-bg-correct: #0E8DA8;
  --tile-shadow:   rgba(0, 0, 0, 0.35);
}

[data-theme="light"] {
  color-scheme: light;
  --bg:            #EFF4F9;
  --fg:            var(--navy);
  --bg-soft:       #FFFFFF;
  --bg-softer:     #E6EEF5;
  --border:        rgba(14, 27, 46, 0.14);
  --border-strong: rgba(14, 27, 46, 0.32);
  --fg-muted:      #47576E;
  --fg-faint:      #7B889E;
  --cyan-ink:      #0B7E9C;
  --cyan-soft:     rgba(11, 143, 174, 0.12);
  --cyan-soft-2:   rgba(11, 143, 174, 0.22);
  --overlay-bg:    rgba(232, 238, 245, 0.88);
  --card-bg:       #FFFFFF;
  --shadow:        0 18px 40px rgba(14, 27, 46, 0.14);

  --board-bg:      #DCE6F0;
  --tile-bg:       linear-gradient(135deg, #0B93B5, #0B7E9C);
  --tile-bg-correct: #07596E;
  --tile-shadow:   rgba(14, 27, 46, 0.20);
}
html, body { background: var(--bg); }

/* الخطوط المحلية — الأسماء المستعارة تمنع تصادم الخطوط عند الدمج بالموقع.
   المستخدم فعلياً: خط عربي (400/700) للواجهة + MB Mono (500) للأرقام. */
@font-face {
  font-family: "MB Sans Arabic"; font-style: normal; font-weight: 400; font-display: swap;
  src: url("./vendor/fonts/ibmplexarabic-400-arabic.woff2") format("woff2");
  unicode-range: U+0600-06FF, U+0750-077F, U+0870-088E, U+0890-0891, U+0897-08E1, U+08E3-08FF, U+200C-200E, U+2010-2011, U+204F, U+2E41, U+FB50-FDFF, U+FE70-FE74, U+FE76-FEFC, U+102E0-102FB, U+10E60-10E7E, U+10EC2-10EC4, U+10EFC-10EFF, U+1EE00-1EE03, U+1EE05-1EE1F, U+1EE21-1EE22, U+1EE24, U+1EE27, U+1EE29-1EE32, U+1EE34-1EE37, U+1EE39, U+1EE3B, U+1EE42, U+1EE47, U+1EE49, U+1EE4B, U+1EE4D-1EE4F, U+1EE51-1EE52, U+1EE54, U+1EE57, U+1EE59, U+1EE5B, U+1EE5D, U+1EE5F, U+1EE61-1EE62, U+1EE64, U+1EE67-1EE6A, U+1EE6C-1EE72, U+1EE74-1EE77, U+1EE79-1EE7C, U+1EE7E, U+1EE80-1EE89, U+1EE8B-1EE9B, U+1EEA1-1EEA3, U+1EEA5-1EEA9, U+1EEAB-1EEBB, U+1EEF0-1EEF1;
}
@font-face {
  font-family: "MB Sans Arabic"; font-style: normal; font-weight: 700; font-display: swap;
  src: url("./vendor/fonts/ibmplexarabic-700-arabic.woff2") format("woff2");
  unicode-range: U+0600-06FF, U+0750-077F, U+0870-088E, U+0890-0891, U+0897-08E1, U+08E3-08FF, U+200C-200E, U+2010-2011, U+204F, U+2E41, U+FB50-FDFF, U+FE70-FE74, U+FE76-FEFC, U+102E0-102FB, U+10E60-10E7E, U+10EC2-10EC4, U+10EFC-10EFF, U+1EE00-1EE03, U+1EE05-1EE1F, U+1EE21-1EE22, U+1EE24, U+1EE27, U+1EE29-1EE32, U+1EE34-1EE37, U+1EE39, U+1EE3B, U+1EE42, U+1EE47, U+1EE49, U+1EE4B, U+1EE4D-1EE4F, U+1EE51-1EE52, U+1EE54, U+1EE57, U+1EE59, U+1EE5B, U+1EE5D, U+1EE5F, U+1EE61-1EE62, U+1EE64, U+1EE67-1EE6A, U+1EE6C-1EE72, U+1EE74-1EE77, U+1EE79-1EE7C, U+1EE7E, U+1EE80-1EE89, U+1EE8B-1EE9B, U+1EEA1-1EEA3, U+1EEA5-1EEA9, U+1EEAB-1EEBB, U+1EEF0-1EEF1;
}
@font-face {
  font-family: "MB Mono"; font-style: normal; font-weight: 500; font-display: swap;
  src: url("./vendor/fonts/jetbrainsmono-500-latin.woff2") format("woff2");
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}

#mb-app {
  --font-sans: "MB Sans Arabic", system-ui, -apple-system, "Segoe UI", Tahoma, Arial, sans-serif;
  --font-mono: "MB Mono", ui-monospace, "SF Mono", Menlo, Consolas, monospace;
}

/* BASE */
#mb-app {
  box-sizing: border-box;
  min-height: 100dvh;
  margin-inline: auto;
  padding: 20px 16px 44px;
  max-width: 480px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  margin-block: 16px;
  color: var(--fg);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.6;
  text-align: start;
  transition: background-color 0.25s ease, color 0.25s ease;
}
#mb-app *, #mb-app *::before, #mb-app *::after { box-sizing: inherit; }
#mb-app [hidden] { display: none !important; }
#mb-app button { font: inherit; color: inherit; cursor: pointer; touch-action: manipulation; }
#mb-app svg { display: block; flex: none; }
#mb-app :focus-visible { outline: 2px solid var(--cyan); outline-offset: 2px; }

/* الرأس */
#mb-app .mb-head { display: flex; align-items: flex-start; justify-content: space-between; gap: 12px; margin-block-end: 14px; }
#mb-app .mb-brand { display: grid; gap: 2px; }
#mb-app .mb-eyebrow { display: inline-flex; align-items: center; gap: 8px; margin: 0; font-size: 0.72rem; font-weight: 700; letter-spacing: 0.14em; color: var(--cyan-ink); text-transform: uppercase; }
#mb-app .mb-title { margin: 0; font-family: var(--font-sans); font-size: clamp(1.5rem, 8vw, 2rem); font-weight: 700; line-height: 1.15; letter-spacing: -0.01em; color: var(--cyan-ink); }

#mb-app .mb-icon-btn {
  display: inline-flex; align-items: center; justify-content: center;
  width: 44px; height: 44px; flex: none;
  border: 1px solid transparent; border-radius: 12px; background: transparent; color: var(--fg-muted);
  transition: color 0.2s ease, background-color 0.2s ease, border-color 0.2s ease;
}
#mb-app .mb-icon-btn:hover, #mb-app .mb-icon-btn:focus-visible { color: var(--cyan-ink); border-color: var(--border-strong); background: var(--cyan-soft); }
#mb-app .mb-icon-btn:active { background: var(--cyan-soft-2); }
#mb-app .mb-icon-btn svg { width: 22px; height: 22px; }
#mb-app .mb-icon-btn .mb-icon-btn__label { font-size: 0.85rem; font-weight: 700; }
#mb-app .mb-lang-btn { gap: 6px; padding-inline: 10px; width: auto; }
#mb-app .mb-lang-btn__label { font-family: var(--font-mono); font-size: 0.8rem; font-weight: 700; letter-spacing: 0.04em; }
#mb-app .mb-head__actions { display: flex; align-items: center; gap: 8px; }

/* شريط النقاط */
#mb-app .mb-scorebar { display: flex; gap: 10px; margin-block-end: 12px; }
#mb-app .mb-score { flex: 1; padding: 10px 14px; border: 1px solid var(--border); border-radius: var(--radius); background: var(--bg-soft); }
#mb-app .mb-score__label { margin: 0; font-size: 0.74rem; font-weight: 700; color: var(--fg-muted); }
#mb-app .mb-score__value { margin: 4px 0 0; font-family: var(--font-mono); font-size: clamp(1.3rem, 7vw, 1.7rem); font-weight: 500; line-height: 1.1; direction: ltr; text-align: start; font-variant-numeric: tabular-nums; }
#mb-app .mb-score--best .mb-score__value { color: var(--cyan-ink); }

/* اللوحة — شبكة 4×4 */
#mb-app .mb-board {
  position: relative; width: 100%; max-width: 420px; margin-inline: auto;
  aspect-ratio: 1 / 1;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  background: var(--board-bg);
  box-shadow: var(--shadow);
  direction: ltr;
  touch-action: manipulation;
  user-select: none;
  -webkit-user-select: none;
  -webkit-tap-highlight-color: transparent;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 6px;
  padding: 8px;
}

#mb-app .mb-tile {
  display: flex; align-items: center; justify-content: center;
  background: var(--tile-bg);
  color: var(--white);
  font-family: var(--font-mono);
  font-size: clamp(1.1rem, 5vw, 1.6rem);
  font-weight: 500;
  border-radius: 8px;
  cursor: pointer;
  user-select: none;
  -webkit-user-select: none;
  aspect-ratio: 1;
  transition: transform 0.12s ease, opacity 0.12s ease;
  box-shadow: 0 2px 8px var(--tile-shadow);
  min-block-size: 44px;
  min-inline-size: 44px;
}
#mb-app .mb-tile:active { transform: scale(0.93); }
#mb-app .mb-tile.mb-empty {
  background: transparent;
  box-shadow: none;
  cursor: default;
  pointer-events: none;
}
#mb-app .mb-tile.mb-correct {
  background: var(--tile-bg-correct);
  box-shadow: 0 0 0 2px rgba(23, 180, 214, 0.3), 0 2px 8px var(--tile-shadow);
}

/* النوافذ (فوز) */
#mb-app .mb-overlay {
  position: absolute; inset: 0; z-index: 10;
  display: flex; align-items: center; justify-content: center;
  padding: 20px;
  border-radius: var(--radius-lg);
  background: var(--overlay-bg);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
}
#mb-app .mb-overlay.mb-visible { opacity: 1; pointer-events: auto; }
#mb-app .mb-overlay__card {
  width: 100%; max-width: 300px;
  padding: 22px 18px;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  background: var(--card-bg);
  box-shadow: var(--shadow);
  text-align: center;
}
#mb-app .mb-overlay__title { margin: 0 0 8px; font-family: var(--font-sans); font-size: 1.5rem; font-weight: 700; color: var(--cyan-ink); }
#mb-app .mb-overlay__text { margin: 0 0 10px; font-size: 0.92rem; color: var(--fg-muted); }
#mb-app .mb-overlay__newbest { margin: 0 0 14px; font-size: 0.84rem; font-weight: 700; color: var(--coral); }
#mb-app .mb-overlay__actions { display: grid; gap: 10px; }

/* الأزرار — --coral حصراً لزر فعل واحد */
#mb-app .mb-btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 10px;
  width: 100%; min-height: 48px; padding: 0 20px;
  border-radius: 12px; border: 1px solid transparent;
  font-size: 1rem; font-weight: 700;
  transition: transform 0.12s ease, box-shadow 0.2s ease, background-color 0.2s ease;
}
#mb-app .mb-btn:active { transform: translateY(1px); }
#mb-app .mb-btn svg { width: 20px; height: 20px; }
#mb-app .mb-btn--new { background: var(--coral); color: var(--white); box-shadow: 0 10px 26px var(--coral-glow); }
#mb-app .mb-btn--new:hover { background: var(--coral-hover); }
#mb-app .mb-btn--ghost { background: transparent; border-color: var(--border-strong); color: var(--fg-muted); }
#mb-app .mb-btn--ghost:hover { color: var(--cyan-ink); border-color: var(--cyan-ink); }

/* الحاشية */
#mb-app .mb-footnote { display: flex; align-items: flex-start; gap: 8px; margin: 18px 0 0; font-size: 0.72rem; color: var(--fg-faint); }
#mb-app .mb-footnote svg { width: 15px; height: 15px; flex: none; margin-block-start: 2px; }
#mb-app .mb-live { position: absolute; inline-size: 1px; block-size: 1px; opacity: 0; overflow: hidden; clip-path: inset(50%); white-space: nowrap; }

/* حركة مخففة */
@media (prefers-reduced-motion: reduce) {
  #mb-app *, #mb-app *::before, #mb-app *::after {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
  }
}