/* ========================================
   MANGA READER CSS - COMPACT NEON GLASS (2025)
   Style: Ultra-Compact, Refined, Luminous
   Updated: Merged with Header styles from style.css
   ======================================== */

:root {
    /* --- Core Palette (Neon Emerald) --- */
    --c-accent: #34d399;          /* Emerald sáng */
    --c-accent-hover: #2ebb87;
    --c-accent-glow: 0 0 12px rgba(52, 211, 153, 0.35);
    --c-accent-soft: rgba(52, 211, 153, 0.15);
    
    /* --- Surfaces --- */
    --c-bg-deep: #0f172a;         /* Deep Slate */
    --c-bg-glass: rgba(30, 41, 59, 0.8); /* Kính đậm màu */
    --c-bg-card: rgba(30, 41, 59, 0.6);
    --c-bg-surface: rgba(255, 255, 255, 0.06); /* Nút bấm */
    --c-bg-hover: rgba(255, 255, 255, 0.12);
    --c-bg-active: rgba(52, 211, 153, 0.15);
    --c-bg-item: rgba(15, 23, 42, 0.6);

    /* --- Text --- */
    --c-text-main: #f1f5f9;       /* Trắng sáng */
    --c-text-light: #cbd5e1;
    --c-text-muted: #94a3b8;      /* Xám lạnh */
    
    /* --- Effects --- */
    --glass-border: 1px solid rgba(255, 255, 255, 0.1);
    --glass-shine: inset 0 1px 0 0 rgba(255, 255, 255, 0.12);
    --shadow-float: 0 15px 40px -5px rgba(0, 0, 0, 0.6);
    --shadow-card: 0 4px 20px rgba(0, 0, 0, 0.4);
    
    /* --- Dimensions (COMPACT) --- */
    --header-height: 56px;
    --sidebar-width: 260px;       /* Sidebar gọn gàng */
    --sidebar-gap: 12px;          /* Khoảng cách lề */
    --max-width: 1300px;
    
    /* --- Radius --- */
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 16px;
    --radius-pill: 99px;
    --radius-box: 10px;           /* Bo góc nhỏ hơn cho hợp với nút bé */
    
    /* --- Motion --- */
    --ease-elastic: cubic-bezier(0.34, 1.56, 0.64, 1);
    --ease-smooth: cubic-bezier(0.25, 0.8, 0.25, 1);
    --transition: all 0.25s var(--ease-smooth);

    /* --- Fonts --- */
    --font-main: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

*, *::before, *::after { 
    margin: 0; padding: 0; box-sizing: border-box; 
    -webkit-tap-highlight-color: transparent; outline: none;
}

html { font-size: 14px; }

body {
    font-family: var(--font-main);
    background-color: var(--c-bg-deep);
    background-image: 
        radial-gradient(circle at 10% 20%, rgba(52, 211, 153, 0.06), transparent 40%),
        radial-gradient(circle at 90% 80%, rgba(99, 102, 241, 0.06), transparent 40%);
    color: var(--c-text-main);
    overflow: hidden; height: 100vh;
}

a { color: inherit; text-decoration: none; transition: var(--transition); }
a:hover { color: var(--c-accent); }
img { max-width: 100%; height: auto; display: block; }
button { font-family: inherit; cursor: pointer; border: none; background: none; }

/* --- SCROLLBAR (10px) --- */
::-webkit-scrollbar { 
    width: 10px; height: 10px;
}
::-webkit-scrollbar-track { 
    background: rgba(255, 255, 255, 0.02); 
    border-left: 1px solid rgba(255,255,255,0.05);
}
::-webkit-scrollbar-thumb { 
    background: rgba(255, 255, 255, 0.25);
    border-radius: 5px; 
    border: 2px solid transparent; 
    background-clip: content-box;
}
::-webkit-scrollbar-thumb:hover { 
    background-color: var(--c-accent); 
    box-shadow: 0 0 8px var(--c-accent);
}

/* =================================================================
   HEADER (Ported from style.css)
   ================================================================= */
.header {
    background: rgba(15, 23, 42, 0.9);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: var(--glass-border);
    position: fixed; /* Fixed specifically for Reader App context */
    top: 0; left: 0; right: 0;
    z-index: 900;
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.4);
    transition: transform 0.3s var(--ease-smooth);
}

/* Logic for hiding header in reader interface */
body.header-hidden .header { transform: translateY(-100%); }

.header-top {
    max-width: var(--max-width); 
    margin: 0 auto;
    padding: 0 20px;
    height: 60px;
    display: flex; 
    align-items: center;
    gap: 20px;
}

/* --- Logo --- */
.logo { 
    display: inline-flex; 
    align-items: center; 
    gap: 10px; 
    font-weight: 700; 
    font-size: 18px; 
    color: #fff;
    text-shadow: 0 0 20px rgba(52, 211, 153, 0.3);
    flex-shrink: 0;
}
.logo:hover { opacity: 0.9; color: #fff; }

.logo-mark { 
    width: 36px; 
    height: 26px; 
    background: linear-gradient(135deg, var(--c-accent), var(--c-accent-hover)); 
    display: flex; 
    align-items: center; 
    justify-content: center; 
    border-radius: var(--radius-sm); 
    color: #000; 
    font-weight: 800; 
    font-size: 12px;
    box-shadow: var(--c-accent-glow);
    position: relative;
}
.logo-accent { display: none; }
.logo-text { display: none; } 

@media (min-width: 1200px) {
    .logo-text { display: inline; }
}

/* --- Main Navigation --- */
.main-nav {
    display: flex;
    align-items: center;
    gap: 4px;
    flex: 1;
}

.nav-link {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 8px 14px;
    color: var(--c-text-muted);
    font-size: 13px;
    font-weight: 600;
    border-radius: var(--radius-sm);
    transition: var(--transition);
    cursor: pointer;
    white-space: nowrap;
    text-decoration: none;
}
.nav-link:hover {
    color: var(--c-text-main);
    background: var(--c-bg-surface);
}
.nav-arrow {
    opacity: 0.6;
    transition: transform 0.2s;
}

/* Nav Dropdown */
.nav-item-has-child {
    position: relative;
}
.nav-item-has-child:hover .nav-link {
    color: var(--c-accent);
    background: var(--c-bg-surface);
}
.nav-item-has-child:hover .nav-arrow {
    transform: rotate(180deg);
}
.nav-item-has-child:hover .nav-dropdown {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.nav-dropdown {
    position: absolute;
    top: 100%;
    left: 0;
    min-width: 180px;
    padding-top: 8px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all 0.25s var(--ease-smooth);
    z-index: 1000;
}
.nav-dropdown-wide {
    width: 500px;
    left: 50%;
    transform: translateX(-50%) translateY(-10px);
}
.nav-item-has-child:hover .nav-dropdown-wide {
    transform: translateX(-50%) translateY(0);
}

.nav-dropdown-inner {
    background: var(--c-bg-glass);
    backdrop-filter: blur(20px);
    border: var(--glass-border);
    border-radius: var(--radius-md);
    padding: 8px;
    box-shadow: var(--shadow-float);
}
.nav-dropdown-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 4px;
    max-height: 400px;
    overflow-y: auto;
}

.nav-dropdown-item {
    display: block;
    padding: 10px 14px;
    color: var(--c-text-light);
    font-size: 13px;
    border-radius: var(--radius-sm);
    transition: var(--transition);
    text-decoration: none;
}
.nav-dropdown-item:hover {
    background: var(--c-accent);
    color: #000;
}

/* --- Search Box (Compact) --- */
.search-box { 
    position: relative; 
    display: flex; 
    align-items: center;
    width: 220px;
    flex-shrink: 0;
}

.search-box input {
    width: 100%;
    padding: 8px 70px 8px 14px; 
    border: var(--glass-border);
    font-size: 13px; 
    background: var(--c-bg-surface); 
    color: var(--c-text-main);
    border-radius: var(--radius-pill); 
    transition: var(--transition);
    height: 36px;
}

.search-box input:focus { 
    border-color: rgba(52, 211, 153, 0.5); 
    background: rgba(255, 255, 255, 0.1);
    box-shadow: 0 0 20px rgba(52, 211, 153, 0.15);
    width: 280px;
}

.search-box input::placeholder { color: var(--c-text-muted); }

.search-actions {
    position: absolute;
    right: 4px;
    top: 50%;
    transform: translateY(-50%);
    display: flex;
    align-items: center;
    gap: 2px;
}

.search-filter-btn {
    width: 28px;
    height: 28px;
    display: flex; 
    align-items: center; 
    justify-content: center;
    color: var(--c-text-muted);
    border-radius: 50%;
    transition: var(--transition);
    cursor: pointer;
}
.search-filter-btn:hover { color: var(--c-accent); background: var(--c-bg-hover); }

.search-submit-btn {
    width: 28px;
    height: 28px;
    display: flex; 
    align-items: center; 
    justify-content: center;
    color: var(--c-text-muted);
    border: none; 
    background: var(--c-accent);
    color: #000;
    border-radius: 50%;
    transition: var(--transition);
    cursor: pointer;
}
.search-submit-btn:hover { 
    background: #fff;
    box-shadow: 0 0 10px rgba(255,255,255,0.3);
}

/* Search Results Dropdown */
.search-results {
    position: absolute; 
    top: calc(100% + 8px); 
    left: 0; 
    right: 0;
    background: var(--c-bg-glass); 
    backdrop-filter: blur(20px);
    border: var(--glass-border);
    z-index: 1001; 
    display: none; 
    max-height: 400px; 
    overflow-y: auto;
    border-radius: var(--radius-md); 
    box-shadow: var(--shadow-float);
    min-width: 350px;
}

/* --- Mobile Toggle --- */
.menu-toggle { 
    display: none; 
    width: 40px;
    height: 40px;
    align-items: center;
    justify-content: center;
    color: var(--c-text-main);
    background: var(--c-bg-surface);
    border: var(--glass-border);
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: var(--transition);
}
.menu-toggle:hover {
    background: var(--c-bg-hover);
    color: var(--c-accent);
}

/* --- Mobile Navigation --- */
.mobile-nav {
    display: none;
    position: fixed;
    top: 60px;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(15, 23, 42, 0.98);
    backdrop-filter: blur(20px);
    z-index: 999;
    overflow-y: auto;
    transform: translateY(-100%);
    opacity: 0;
    transition: all 0.3s var(--ease-smooth);
}
.mobile-nav.show {
    transform: translateY(0);
    opacity: 1;
}

.mobile-nav-inner {
    padding: 20px;
    max-width: 500px;
    margin: 0 auto;
}

.mobile-nav-link {
    display: block;
    padding: 14px 16px;
    color: var(--c-text-main);
    font-size: 15px;
    font-weight: 600;
    border-radius: var(--radius-sm);
    transition: var(--transition);
    text-decoration: none;
}
.mobile-nav-link:hover {
    background: var(--c-bg-surface);
    color: var(--c-accent);
}

.mobile-nav-divider {
    height: 1px;
    background: var(--glass-border);
    margin: 16px 0;
}

.mobile-nav-section {
    margin-bottom: 20px;
}
.mobile-nav-title {
    display: block;
    padding: 8px 16px;
    color: var(--c-accent);
    font-size: 11px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.mobile-nav-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    padding: 8px 16px;
}

.mobile-nav-tag {
    display: inline-block;
    padding: 8px 14px;
    background: var(--c-bg-surface);
    border: var(--glass-border);
    color: var(--c-text-light);
    font-size: 13px;
    border-radius: var(--radius-pill);
    text-decoration: none;
    transition: var(--transition);
}
.mobile-nav-tag:hover {
    background: var(--c-accent);
    color: #000;
    border-color: var(--c-accent);
}

/* --- Auth Area --- */
.auth-area { 
    display: flex; 
    align-items: center; 
    gap: 10px; 
    margin-left: 15px; 
}

.auth-area .btn-auth { 
    padding: 8px 16px; 
    font-size: 12px; 
    font-weight: 600; 
    border-radius: var(--radius-sm); 
    cursor: pointer; 
    transition: var(--transition); 
    border: var(--glass-border); 
}

.auth-area .btn-login { 
    background: var(--c-accent); 
    color: #000; 
    border-color: var(--c-accent); 
}
.auth-area .btn-login:hover { 
    background: var(--c-accent-hover); 
    box-shadow: var(--c-accent-glow); 
}

.auth-area .btn-register { 
    background: var(--c-bg-surface); 
    color: var(--c-text-muted); 
}
.auth-area .btn-register:hover { 
    border-color: var(--c-accent); 
    color: var(--c-accent);
    background: var(--c-accent-soft);
}

/* User Logged */
.user-logged { display: flex; align-items: center; gap: 12px; }

.user-logged .user-name { 
    color: var(--c-accent); 
    font-weight: 600; 
    font-size: 13px; 
    max-width: 100px; 
    white-space: nowrap; 
    overflow: hidden; 
    text-overflow: ellipsis;
    text-shadow: 0 0 10px rgba(52, 211, 153, 0.3);
}

.user-logged .user-bm-count { 
    background: var(--c-bg-surface); 
    color: var(--c-text-muted); 
    font-size: 11px; 
    padding: 4px 10px; 
    border-radius: var(--radius-pill); 
    border: var(--glass-border); 
    text-decoration: none;
    transition: var(--transition);
}
.user-logged .user-bm-count:hover {
    border-color: rgba(255,255,255,0.2);
    color: #fff;
}

.user-logged .btn-logout { 
    background: transparent; 
    color: var(--c-text-muted); 
    font-size: 12px; 
    padding: 6px 12px; 
    border: none; 
    cursor: pointer; 
    transition: var(--transition); 
}
.user-logged .btn-logout:hover { color: #ef4444; }

.user-logged .btn-continue { display: none !important; }
/* ========================================
   MAIN CONTAINER
   ======================================== */
.app-container {
    display: flex; height: 100vh;
    padding-top: var(--header-height);
    /* Margin chuẩn + chút đệm để không dính scrollbar */
    margin-right: calc(var(--sidebar-width) + var(--sidebar-gap) + 12px);
    transition: margin-right 0.4s var(--ease-smooth), padding-top 0.4s;
    position: relative;
}
.app-container.full-width { margin-right: 0; }
body.header-hidden .app-container { padding-top: 0; }

/* ========================================
   READER VIEW
   ======================================== */
.reader-view {
    flex: 1; 
    overflow-y: auto; overflow-x: hidden;
    height: 100%; position: relative;
    display: flex; justify-content: center;
    scroll-behavior: auto; /* Fix lỗi chậm khi space */
}

#content-area { width: 100%; max-width: 900px; min-height: 100%; }
#images-container { padding: 30px 0 120px 0; min-height: 100vh; }

/* Page Animation */
.page-wrapper {
    position: relative; margin: 0 auto;
    display: flex; justify-content: center; align-items: center;
    min-height: 200px;
    opacity: 0; transform: scale(0.97);
    animation: revealPage 0.25s var(--ease-smooth) forwards;
}
@keyframes revealPage { to { opacity: 1; transform: scale(1); } }

.page-img, .page-canvas {
    display: block; 
    border-radius: 4px;
    box-shadow: 0 15px 50px rgba(0, 10, 20, 0.5);
}

/* Spinner */
.page-wrapper::before {
    content: ""; position: absolute; top: 50%; left: 50%;
    width: 36px; height: 36px; margin: -18px 0 0 -18px;
    border-radius: 50%;
    border: 2px solid rgba(255,255,255,0.1);
    border-top-color: var(--c-accent);
    border-right-color: var(--c-accent);
    animation: spin 0.8s linear infinite;
    box-shadow: 0 0 10px var(--c-accent);
}
.page-wrapper.loaded::before { display: none; }
@keyframes spin { to { transform: rotate(360deg); } }

/* Fit Modes */
.fit-width .page-wrapper { width: 100%; margin-bottom: 6px; }
.fit-width .page-img, .fit-width .page-canvas { width: 100%; height: auto; }

.fit-height .page-wrapper { margin-bottom: 0; }
.fit-height .page-img, .fit-height .page-canvas { height: calc(100vh - var(--header-height)); width: auto; max-width: 100%; object-fit: contain; }
body.header-hidden .fit-height .page-img, body.header-hidden .fit-height .page-canvas { height: 100vh; }

.fit-both .page-img, .fit-both .page-canvas { max-width: 100%; max-height: calc(100vh - var(--header-height)); width: auto; height: auto; object-fit: contain; }
body.header-hidden .fit-both .page-img, body.header-hidden .fit-both .page-canvas { max-height: 100vh; }

.mode-double { display: flex; justify-content: center; }
.mode-double .page-wrapper { flex: 0 0 auto; max-width: 50%; margin: 0; animation: none; opacity: 1; transform: none; }
.mode-double.rtl { flex-direction: row-reverse; }

/* ========================================
   BOTTOM PROGRESS BAR (ENHANCED)
   ======================================== */
.progress-bar-container {
    position: absolute; /* Relative to app-container */
    bottom: 0; left: 0; width: 100%;
    height: 30px; /* Tăng vùng nhận diện chuột một chút để dễ hover */
    display: flex; align-items: flex-end; /* Căn đáy để thanh mọc lên trên */
    z-index: 800;
    gap: 1px;
    padding: 0 2px 2px 2px;
    pointer-events: auto;
}

/* Individual segment (tick/khất) */
.progress-segment {
    flex: 1;
    height: 4px; /* Default height - mỏng */
    background: rgba(255, 255, 255, 0.15);
    transition: height 0.2s cubic-bezier(0.25, 0.8, 0.25, 1), background-color 0.2s;
    cursor: pointer;
    border-radius: 2px 2px 0 0;
    position: relative; /* Để định vị tooltip số trang */
}

/* --- YÊU CẦU 1: Khi hover vào CONTAINER, TOÀN BỘ segment cao lên --- */
.progress-bar-container:hover .progress-segment {
    height: 20px; /* Tất cả cùng cao lên */
    background: rgba(255, 255, 255, 0.3); /* Màu nền khi bar mở rộng nhưng chưa active */
}

.progress-segment.active {
    background: var(--c-accent);
    box-shadow: 0 0 5px var(--c-accent);
}

.progress-bar-container:hover .progress-segment.active {
    background: var(--c-accent);
    opacity: 1;
}

.progress-segment:hover {
    background: #fff !important; 
    box-shadow: 0 0 8px #fff;
    z-index: 2; 
}

.progress-segment::after {
    content: attr(data-page); 
    position: absolute;
    bottom: 28px;
    left: 50%;
    transform: translateX(-50%) scale(0.8);
    
    background: #0f172a;
    color: var(--c-accent);
    border: 1px solid var(--c-accent);
    padding: 2px 6px;
    border-radius: 6px;
    
    font-size: 11px;
    font-weight: 800;
    white-space: nowrap;
    opacity: 0;
    visibility: hidden;
    pointer-events: none; 
    transition: all 0.15s ease;
    box-shadow: 0 4px 10px rgba(0,0,0,0.5);
}
.progress-segment::before {
    content: "";
    position: absolute;
    bottom: 24px;
    left: 50%;
    margin-left: -4px;
    border-width: 4px;
    border-style: solid;
    border-color: var(--c-accent) transparent transparent transparent;
    opacity: 0;
    visibility: hidden;
    transition: all 0.15s ease;
}
.progress-segment:hover::after,
.progress-segment:hover::before {
    opacity: 1;
    visibility: visible;
    transform: translateX(-50%) scale(1);
}

/* ========================================
   SIDEBAR (COMPACT GLASS)
   ======================================== */
.sidebar {
    position: fixed; 
    top: var(--sidebar-gap); right: var(--sidebar-gap); bottom: var(--sidebar-gap);
    width: var(--sidebar-width);
    
    background: var(--c-bg-glass);
    backdrop-filter: blur(20px) saturate(140%);
    -webkit-backdrop-filter: blur(20px) saturate(140%);
    
    border-radius: 20px;
    border: var(--glass-border);
    box-shadow: var(--shadow-float);
    z-index: 1000;
    
    display: flex; flex-direction: column;
    transform: translateX(0); opacity: 1;
    transition: transform 0.4s var(--ease-elastic), opacity 0.3s;
}

.sidebar.collapsed { 
    transform: translateX(120%); opacity: 0; pointer-events: none;
}

.sidebar-content {
    padding: 16px; padding-top: 55px;
    flex: 1; overflow-y: auto;
    display: flex; flex-direction: column; gap: 8px; /* Gap nhỏ hơn */
}

.sidebar-title {
    color: var(--c-accent);
    font-size: 0.75rem; font-weight: 800;
    letter-spacing: 1.5px; text-transform: uppercase;
    display: flex; align-items: center; gap: 6px;
    margin-left: 4px; padding-bottom: 6px;
    border-bottom: 1px solid rgba(255,255,255,0.08);
    text-shadow: 0 0 10px rgba(52, 211, 153, 0.3);
}

.control-group { margin-bottom: 2px; }
.control-label {
    color: var(--c-text-muted);
    font-size: 0.75rem; font-weight: 700;
    margin-bottom: 4px; margin-left: 4px;
    text-transform: uppercase;
}

/* ========================================
   BUTTONS (COMPACT & CLEAN)
   ======================================== */
.btn-rotate, .btn-action, .dropdown-trigger, .btn-share, .btn-side, .btn-main, .btn-server {
    border: none; outline: none; cursor: pointer;
    font-family: inherit; position: relative; overflow: hidden;
}

/* Main Buttons - NHỎ GỌN */
.btn-rotate, .btn-action, .dropdown-trigger, .btn-share {
    width: 100%;
    background: var(--c-bg-surface);
    color: var(--c-text-main);
    
    /* Điều chỉnh kích thước tại đây */
    padding: 6px 10px;  /* Padding nhỏ */
    min-height: 34px;   /* Chiều cao compact */
    font-size: 0.9rem;  /* Font chữ nhỏ gọn */
    border-radius: var(--radius-box);
    
    display: flex; justify-content: space-between; align-items: center;
    font-weight: 500;
    transition: all 0.2s ease;
    border: 1px solid transparent;
}

/* Hover Effects */
.btn-rotate:hover, .btn-action:hover, .dropdown-trigger:hover, .btn-share:hover, .btn-side:hover, .btn-main:hover, .btn-server:hover {
    background: var(--c-bg-hover);
    color: #fff;
    border-color: rgba(255,255,255,0.15);
    box-shadow: var(--glass-shine);
    transform: translateY(-1px);
}
.btn-rotate:active, .btn-action:active { transform: scale(0.97); }

.btn-rotate-value { font-weight: 600; color: var(--c-accent); font-size: 0.9rem; }
.btn-rotate-icon, .btn-action svg { color: var(--c-text-muted); width: 14px; height: 14px; transition: 0.3s; }
.btn-rotate:hover .btn-rotate-icon svg { transform: rotate(180deg); color: #fff; filter: drop-shadow(0 0 4px white); }

/* Nav Group - Slim */
.btn-group { 
    display: flex; gap: 3px; 
    background: rgba(15, 23, 42, 0.4); 
    padding: 3px; border-radius: 12px; 
}
.btn-side { 
    width: 32px; height: 32px; /* Button vuông nhỏ */
    background: transparent; color: var(--c-text-muted); 
    border-radius: 8px; display: flex; align-items: center; justify-content: center; 
}
.btn-main { 
    flex: 1; height: 32px; background: var(--c-bg-surface); 
    color: var(--c-text-main); border-radius: 8px; 
    display: flex; align-items: center; justify-content: space-between; 
    padding: 0 10px; font-weight: 600; font-size: 0.9rem; 
}

/* Server Pills - Tiny */
.server-btns-container { 
    display: flex; gap: 4px; 
    background: rgba(15, 23, 42, 0.4); padding: 3px; border-radius: 12px; 
}
.btn-server { 
    flex: 1; padding: 6px; background: transparent; 
    color: var(--c-text-muted); border-radius: 8px; 
    font-size: 0.75rem; font-weight: 700; transition: 0.3s; 
}
.btn-server.active { 
    background: var(--c-bg-active); color: var(--c-accent); 
    box-shadow: var(--c-accent-glow), var(--glass-shine); 
    border: 1px solid rgba(52, 211, 153, 0.3);
}

/* ========================================
   DROPDOWNS
   ======================================== */
.custom-dropdown { position: relative; }
.dropdown-menu {
    position: absolute; top: 100%; left: 0; right: 0; margin-top: 4px;
    background: rgba(15, 23, 42, 0.98);
    border: var(--glass-border);
    border-radius: 12px; padding: 4px; z-index: 50;
    box-shadow: 0 10px 30px rgba(0,0,0,0.6);
    display: none; opacity: 0; transform: translateY(-5px);
    transition: 0.2s;
}
.custom-dropdown.active .dropdown-menu { display: block; opacity: 1; transform: translateY(0); }

.dropdown-item { padding: 8px 12px; font-size: 0.85rem; color: var(--c-text-muted); border-radius: 8px; cursor: pointer; }
.dropdown-item:hover { background: var(--c-bg-hover); color: #fff; }
.dropdown-item.selected { background: var(--c-bg-active); color: var(--c-accent); font-weight: 600; }

/* ========================================
   FLOATING TOGGLES
   ======================================== */
.toggle-btn {
    position: fixed; top: 14px; right: 20px; z-index: 1001;
    background: var(--c-accent); color: #000;
    width: 38px; height: 38px; border-radius: 10px; /* Nhỏ hơn chút */
    display: flex; align-items: center; justify-content: center;
    border: none; cursor: pointer;
    box-shadow: var(--c-accent-glow);
    transition: 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
}
.toggle-btn:hover { transform: scale(1.1) rotate(90deg); background: #fff; box-shadow: 0 0 15px rgba(255,255,255,0.6); }
.toggle-btn.hidden { opacity: 0; transform: scale(0); pointer-events: none; }

.btn-close-sidebar {
    position: absolute; top: 12px; right: 12px;
    width: 30px; height: 30px; border-radius: 50%;
    background: rgba(255,255,255,0.08); color: var(--c-text-muted);
    border: none; cursor: pointer; display: flex; align-items: center; justify-content: center;
    transition: 0.2s;
}
.btn-close-sidebar:hover { background: rgba(255,255,255,0.25); color: #fff; transform: rotate(90deg); }

/* Toast */
#toast {
    position: fixed; bottom: 30px; left: 50%;
    transform: translateX(-50%) translateY(20px);
    background: rgba(15, 23, 42, 0.9); backdrop-filter: blur(12px);
    border: var(--glass-border);
    color: #fff; padding: 10px 24px; border-radius: 30px;
    opacity: 0; visibility: hidden; transition: 0.3s; z-index: 3000;
    box-shadow: 0 10px 30px rgba(0,0,0,0.5); font-size: 0.85rem; font-weight: 600;
    display: flex; align-items: center; gap: 8px;
}
#toast::before { content: ""; width: 6px; height: 6px; border-radius: 50%; background: var(--c-accent); box-shadow: 0 0 8px var(--c-accent); }
#toast.show { opacity: 1; visibility: visible; transform: translateX(-50%) translateY(0); }

/* ========================================
   SUB-SIDEBAR
   ======================================== */
.sub-sidebar {
    position: absolute; top: 0; left: 0; width: 100%; height: 100%;
    background: #0f172a; /* Solid background */
    z-index: 1100; border-radius: 20px;
    display: flex; flex-direction: column;
    transform: translateX(100%); visibility: hidden; 
    transition: transform 0.3s cubic-bezier(0.2, 0.8, 0.2, 1), visibility 0.3s;
}
.sub-sidebar.active { transform: translateX(0); visibility: visible; }

.sub-header { padding: 16px; border-bottom: 1px solid rgba(255,255,255,0.08); }
.sub-header-top { display: flex; align-items: center; gap: 10px; margin-bottom: 10px; }
.sub-title { font-weight: 800; color: #fff; font-size: 0.9rem; letter-spacing: 1px; }

.search-input {
    width: 100%; background: rgba(255,255,255,0.08);
    border: 1px solid transparent; color: #fff;
    padding: 8px 12px; border-radius: 10px;
    font-size: 0.85rem; transition: 0.2s;
}
.search-input:focus { 
    background: rgba(255,255,255,0.15); 
    border-color: rgba(255,255,255,0.2);
    box-shadow: 0 0 10px rgba(52, 211, 153, 0.2);
}

.list-container { flex: 1; overflow-y: auto; padding: 10px; }
.list-item {
    padding: 10px 14px; margin-bottom: 4px;
    border-radius: 8px; cursor: pointer; color: var(--c-text-muted);
    transition: 0.2s; font-size: 0.85rem;
}
.list-item:hover { background: var(--c-bg-hover); color: #fff; }
.list-item.active { 
    background: linear-gradient(90deg, var(--c-bg-active), transparent);
    color: var(--c-accent); font-weight: 600; 
    border-left: 2px solid var(--c-accent);
}

/* ========================================
   RESPONSIVE
   ======================================== */
@media (max-width: 1024px) {
    .header-top { gap: 15px; }
    .main-nav { display: none; }
    
    .search-box {
        position: fixed; top: 60px; left: 0; right: 0; width: 100%; max-width: 100%;
        padding: 12px 20px; background: rgba(15, 23, 42, 0.98); backdrop-filter: blur(20px);
        border-bottom: var(--glass-border); display: none; z-index: 998;
    }
    .search-box.show { display: flex; }
    .search-box input { height: 44px; border-radius: var(--radius-sm); }
    .search-results { border-radius: 0 0 var(--radius-md) var(--radius-md); }
    
    .menu-toggle { display: flex; }
    .mobile-nav { display: block; }
    
    .app-container { margin-right: 0; }
    .sidebar { 
        top: 0; right: 0; bottom: 0; width: 85%; max-width: 280px;
        border-radius: 0; border: none; border-left: 1px solid rgba(255,255,255,0.1);
        background: rgba(15, 23, 42, 0.96);
    }
    .sub-sidebar { border-radius: 0; }
    .mode-double { flex-direction: column !important; }
    .mode-double .page-wrapper { flex: none; max-width: 100%; }
}

@media (max-width: 768px) {
    .header-top { padding: 0 15px; height: 56px; gap: 10px; }
    .logo-mark { width: 32px; height: 24px; font-size: 11px; }
    
    .search-box { top: 56px; padding: 12px 15px; }
    .search-box input { border-radius: var(--radius-sm); height: 42px; }
    .search-box input:focus { width: 100%; }
    .search-results { min-width: 100%; border-radius: 0 0 var(--radius-sm) var(--radius-sm); top: calc(100% + 0px); }
    
    .auth-area { margin-left: auto; }
    .auth-area .btn-auth { padding: 6px 12px; font-size: 11px; }
    .auth-area .btn-register { display: none; }
    
    .mobile-nav { top: 56px; }
}