/* ==========================================================================
   ERP IW DESIGN SYSTEM - LIGHT BLUE & DARK GOLD PALETTE (erpiw.com)
   ========================================================================== */
:root {
    --bg-primary: #f4f8fb;
    --bg-secondary: #ffffff;
    --bg-card: #ffffff;
    --text-primary: #1e293b;
    --text-secondary: #64748b;
    
    --accent-blue: #0284c7;
    --accent-blue-light: #e0f2fe;
    --accent-gold: #b45309;
    --accent-gold-gradient: linear-gradient(135deg, #d97706 0%, #92400e 100%);
    --accent-gold-glow: rgba(180, 83, 9, 0.35);
    
    --border-color: rgba(2, 132, 199, 0.15);
    --shadow-subtle: 0 10px 30px -5px rgba(2, 132, 199, 0.08);
    --shadow-card: 0 20px 40px -15px rgba(14, 116, 144, 0.12);
    --radius-lg: 20px;
    --radius-md: 12px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

[data-theme="dark"] {
    --bg-primary: #070f18;
    --bg-secondary: #0f1d2a;
    --bg-card: #132235;
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    
    --accent-blue: #38bdf8;
    --accent-blue-light: rgba(56, 189, 248, 0.1);
    --accent-gold: #f59e0b;
    --accent-gold-gradient: linear-gradient(135deg, #fbbf24 0%, #d97706 100%);
    --accent-gold-glow: rgba(245, 158, 11, 0.45);
    
    --border-color: rgba(56, 189, 248, 0.15);
    --shadow-subtle: 0 10px 30px -5px rgba(0, 0, 0, 0.3);
    --shadow-card: 0 20px 40px -15px rgba(0, 0, 0, 0.5);
}

* { box-sizing: border-box; margin: 0; padding: 0; font-family: 'Plus Jakarta Sans', sans-serif; }
body { background-color: var(--bg-primary); color: var(--text-primary); min-height: 100vh; display: flex; flex-direction: column; }
.hidden { display: none !important; }

/* LOGO ANIMATION & GLOW EFFECTS */
.brand-logo-img, .footer-logo-img {
    height: 200px;
    width: auto;
    object-fit: contain;
    filter: drop-shadow(0 0 12px var(--accent-gold-glow));
    animation: floatingGlow 4s ease-in-out infinite alternate;
}

@keyframes floatingGlow {
    0% { transform: translateY(0px) scale(1); filter: drop-shadow(0 0 8px var(--accent-gold-glow)); }
    100% { transform: translateY(-3px) scale(1.03); filter: drop-shadow(0 0 18px var(--accent-gold-glow)); }
}

/* NAVBAR */
.navbar-glass { position: sticky; top: 0; z-index: 100; background: var(--bg-secondary); backdrop-filter: blur(12px); border-bottom: 1px solid var(--border-color); padding: 0.8rem 2rem; box-shadow: var(--shadow-subtle); }
.nav-container { max-width: 1200px; margin: 0 auto; display: flex; justify-content: space-between; align-items: center; }
.brand-box { display: flex; align-items: center; gap: 14px; }
.brand-title { font-size: 1.25rem; font-weight: 800; }
.brand-title span { color: var(--accent-gold); }
.nav-controls { display: flex; align-items: center; gap: 12px; }

.icon-btn { background: var(--accent-blue-light); border: 1px solid var(--border-color); color: var(--accent-blue); width: 42px; height: 42px; border-radius: 50%; display: flex; align-items: center; justify-content: center; cursor: pointer; transition: var(--transition); }
.icon-btn:hover { background: var(--accent-blue); color: #fff; }
.primary-gold-btn { background: var(--accent-gold-gradient); color: #fff; border: none; padding: 10px 20px; border-radius: var(--radius-md); font-weight: 600; cursor: pointer; display: flex; align-items: center; gap: 8px; box-shadow: 0 4px 15px var(--accent-gold-glow); }

/* MAIN CONTENT */
.app-main { flex: 1; max-width: 1100px; width: 100%; margin: 0 auto; padding: 2rem 1.5rem; }
.hero-section { text-align: center; margin-bottom: 2rem; }
.hero-content h1 { font-size: 2.5rem; font-weight: 800; margin-bottom: 0.5rem; }
.hero-content h1 span { background: var(--accent-gold-gradient); -webkit-background-clip: text; -webkit-text-fill-color: transparent; }
.hero-content p { color: var(--text-secondary); font-size: 1.05rem; max-width: 650px; margin: 0 auto 1.5rem; }

/* VIEW MODE TOGGLE SWITCH */
.view-mode-toggle { display: inline-flex; background: var(--bg-card); padding: 6px; border-radius: var(--radius-lg); border: 1px solid var(--border-color); gap: 8px; margin-bottom: 1.5rem; box-shadow: var(--shadow-subtle); }
.mode-btn { background: transparent; border: none; padding: 10px 20px; border-radius: var(--radius-md); font-weight: 600; color: var(--text-secondary); cursor: pointer; display: flex; align-items: center; gap: 8px; transition: var(--transition); }
.mode-btn.active { background: var(--accent-blue-light); color: var(--accent-blue); border: 1px solid var(--border-color); }

/* TOOLBAR */
.reader-toolbar { background: var(--bg-card); border: 1px solid var(--border-color); padding: 1.25rem; border-radius: var(--radius-lg); display: flex; flex-wrap: wrap; justify-content: space-between; align-items: center; gap: 20px; box-shadow: var(--shadow-subtle); }
.select-wrapper { display: flex; flex-direction: column; gap: 6px; flex: 1; min-width: 260px; }
.select-wrapper label, .font-scaler-group label { font-size: 0.85rem; font-weight: 600; color: var(--text-secondary); }
.select-wrapper select { background: var(--bg-primary); border: 1px solid var(--border-color); color: var(--text-primary); padding: 10px; border-radius: var(--radius-md); outline: none; }
.page-nav-box { display: flex; align-items: center; gap: 8px; }
.page-nav-box input { background: var(--bg-primary); border: 1px solid var(--border-color); color: var(--text-primary); padding: 8px; border-radius: var(--radius-md); width: 80px; text-align: center; font-weight: 700; }
.page-nav-btn { background: var(--accent-gold-gradient); color: #fff; border: none; padding: 9px 14px; border-radius: var(--radius-md); cursor: pointer; font-weight: 600; }

.font-scaler-group { display: flex; flex-direction: column; gap: 6px; }
.scaler-btns { display: flex; align-items: center; gap: 12px; background: var(--bg-primary); border: 1px solid var(--border-color); padding: 6px 12px; border-radius: var(--radius-md); }
.scaler-btns button { background: none; border: none; color: var(--accent-blue); cursor: pointer; }
#fontSizeDisplay { font-weight: 700; min-width: 45px; text-align: center; }

/* HEADER CARD */
.surah-header-card { background: var(--accent-blue-light); border: 1px solid var(--border-color); padding: 1.75rem; border-radius: var(--radius-lg); text-align: center; margin-bottom: 2rem; }
.surah-header-card h2 { font-size: 1.8rem; font-weight: 800; }
.surah-header-card p { color: var(--text-secondary); }

/* BISMILLAH HEADER */
.bismillah-header { font-family: 'Amiri Quran', 'Scheherazade New', serif; text-align: center; direction: rtl; color: var(--accent-gold); background: var(--bg-card); border: 1px solid var(--accent-gold); border-radius: var(--radius-lg); padding: 1.5rem; margin-bottom: 1.5rem; line-height: 2; }
.bismillah-header::before, .bismillah-header::after { content: "❖"; font-size: 0.8rem; color: var(--accent-gold); margin: 0 15px; }

/* MUSHAF PAGE VIEW & BOOKMARK HEADER */
.page-action-bar { display: flex; justify-content: flex-end; margin-bottom: 1rem; }
.mushaf-page-card { background: var(--bg-card); border: 2px solid var(--accent-gold); border-radius: var(--radius-lg); padding: 2.5rem; box-shadow: var(--shadow-card); direction: rtl; text-align: justify; line-height: 2.5; font-family: 'Amiri Quran', 'Scheherazade New', serif; }
.mushaf-verse-inline { display: inline; word-spacing: 2px; }
.ayah-end-symbol { display: inline-block; color: var(--accent-gold); font-size: 0.75em; margin: 0 6px; }

/* AYAHS LIST VIEW */
.ayahs-container { display: flex; flex-direction: column; gap: 20px; }
.ayah-card { background: var(--bg-card); border: 1px solid var(--border-color); border-radius: var(--radius-lg); padding: 1.75rem; box-shadow: var(--shadow-subtle); }
.ayah-top-row { display: flex; justify-content: space-between; align-items: center; margin-bottom: 1.25rem; border-bottom: 1px solid var(--border-color); padding-bottom: 0.75rem; }
.ayah-badge { background: var(--accent-blue-light); color: var(--accent-blue); font-weight: 700; padding: 4px 10px; border-radius: 6px; }

.bookmark-btn { background: none; border: 1px solid var(--border-color); color: var(--text-secondary); padding: 8px 14px; border-radius: 30px; cursor: pointer; display: flex; align-items: center; gap: 6px; font-weight: 600; font-size: 0.85rem; transition: var(--transition); }
.bookmark-btn.bookmarked { background: var(--accent-gold); border-color: var(--accent-gold); color: #ffffff; }

.ayah-text { font-family: 'Amiri Quran', 'Scheherazade New', serif; direction: rtl; text-align: right; line-height: 2.4; }
.loader-placeholder { text-align: center; padding: 4rem; color: var(--text-secondary); }
.loader-placeholder i { font-size: 2.5rem; color: var(--accent-blue); margin-bottom: 10px; }

/* MODAL TABS FOR SIGN IN / REGISTER */
.modal-overlay { position: fixed; top: 0; left: 0; width: 100%; height: 100%; background: rgba(7, 15, 24, 0.75); backdrop-filter: blur(8px); z-index: 1000; display: flex; align-items: center; justify-content: center; opacity: 0; pointer-events: none; transition: var(--transition); }
.modal-overlay.active { opacity: 1; pointer-events: auto; }
.modal-card { background: var(--bg-card); border: 1px solid var(--border-color); width: 100%; max-width: 420px; padding: 2rem; border-radius: var(--radius-lg); box-shadow: var(--shadow-card); position: relative; }
.modal-close { position: absolute; top: 15px; right: 15px; background: var(--bg-primary); border: 1px solid var(--border-color); color: var(--text-secondary); width: 32px; height: 32px; border-radius: 50%; cursor: pointer; }

.auth-tabs { display: flex; background: var(--bg-primary); border-radius: var(--radius-md); padding: 4px; margin-bottom: 1.5rem; border: 1px solid var(--border-color); }
.auth-tab-btn { flex: 1; background: transparent; border: none; padding: 8px; border-radius: 8px; font-weight: 700; color: var(--text-secondary); cursor: pointer; transition: var(--transition); }
.auth-tab-btn.active { background: var(--bg-card); color: var(--accent-gold); box-shadow: var(--shadow-subtle); }

.auth-form { display: flex; flex-direction: column; gap: 12px; }
.input-group { display: flex; flex-direction: column; gap: 4px; }
.input-group label { font-size: 0.8rem; font-weight: 600; color: var(--text-secondary); }
.input-group input { background: var(--bg-primary); border: 1px solid var(--border-color); color: var(--text-primary); padding: 10px 12px; border-radius: var(--radius-md); outline: none; }
.submit-gold-btn { background: var(--accent-gold-gradient); color: #fff; border: none; padding: 12px; border-radius: var(--radius-md); font-weight: 700; cursor: pointer; margin-top: 8px; }

/* FOOTER */
.footer-glass { border-top: 1px solid var(--border-color); background: var(--bg-secondary); padding: 2rem 1.5rem; margin-top: 3rem; text-align: center; }
.footer-container { max-width: 1100px; margin: 0 auto; display: flex; flex-direction: column; align-items: center; gap: 12px; }
.copyright-text { font-size: 0.95rem; color: var(--text-primary); }
.footer-credits { font-size: 0.85rem; color: var(--text-secondary); display: flex; align-items: center; gap: 8px; flex-wrap: wrap; justify-content: center; }
.footer-credits a { color: var(--accent-gold); text-decoration: none; font-weight: 600; }
.footer-credits a:hover { text-decoration: underline; }
.dot-sep { color: var(--text-secondary); }