/* ==========================================================================
   BOOKSHARE PORTAL CORE THEME (wwwroot/css/core-theme.css)
   Kế thừa book-tracker-ver07 (Font Roboto, Status Banner, AI Widget)
   Kết hợp Bố cục Cổng Dịch vụ Portal (Không Bán Sách - 100% Mượn Trả & Theo Dõi Đọc)
   ========================================================================== */

@font-face {
    font-family: 'Roboto';
    src: url('../fonts/Roboto-Regular.ttf') format('truetype');
    font-weight: 400;
    font-style: normal;
    font-display: swap;
}
@font-face {
    font-family: 'Roboto';
    src: url('../fonts/Roboto-Bold.ttf') format('truetype');
    font-weight: 700;
    font-style: normal;
    font-display: swap;
}

:root {
    --portal-grad-start: #1e3a8a;
    --portal-grad-end: #2563eb;
    --portal-accent: #2563eb;
    --portal-light-bg: #f4f6fb;
    --bs-font-sans-serif: 'Roboto', 'Segoe UI', system-ui, -apple-system, sans-serif;
}

body[data-portal-palette="coral"] {
    --portal-grad-start: #c2410c;
    --portal-grad-end: #ea580c;
    --portal-accent: #ea580c;
}

body[data-portal-palette="emerald"] {
    --portal-grad-start: #065f46;
    --portal-grad-end: #0d9488;
    --portal-accent: #0d9488;
}

body {
    font-family: var(--bs-font-sans-serif);
    background-color: var(--portal-light-bg);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    color: #1e293b;
}

main {
    flex: 1;
}

/* 1. PORTAL HEADER & GIANT SEARCH BAR */
.portal-header-wrapper {
    background: linear-gradient(180deg, var(--portal-grad-start) 0%, var(--portal-grad-end) 100%);
    color: #ffffff;
    position: sticky;
    top: 0;
    z-index: 1030;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.12);
}

.portal-utility-bar {
    font-size: 0.78rem;
    padding: 6px 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.16);
}

.portal-utility-bar a {
    color: rgba(255, 255, 255, 0.92);
    text-decoration: none;
    transition: opacity 0.15s;
}
.portal-utility-bar a:hover {
    opacity: 0.8;
    color: #ffffff;
}

.portal-main-bar {
    padding: 12px 0 10px;
}

.portal-logo {
    color: #ffffff;
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 10px;
}
.portal-logo:hover {
    color: #ffffff;
}

.portal-search-box {
    background: #ffffff;
    border-radius: 8px;
    padding: 3px;
    display: flex;
    align-items: center;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.14);
}

.portal-search-box input {
    border: none;
    outline: none;
    flex: 1;
    padding: 8px 14px;
    font-size: 0.92rem;
    color: #1e293b;
}

.portal-search-box select {
    border: none;
    border-left: 1px solid #e2e8f0;
    padding: 8px 12px;
    font-size: 0.82rem;
    color: #475569;
    background: transparent;
    outline: none;
    max-width: 195px;
}

.portal-search-btn {
    background: var(--portal-accent);
    color: #ffffff;
    border: none;
    border-radius: 6px;
    padding: 8px 20px;
    font-weight: 600;
    transition: opacity 0.15s;
}
.portal-search-btn:hover {
    opacity: 0.92;
}

.portal-quick-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-top: 6px;
    font-size: 0.76rem;
}
.portal-quick-tags a {
    color: rgba(255, 255, 255, 0.92);
    text-decoration: none;
}
.portal-quick-tags a:hover {
    text-decoration: underline;
    color: #ffffff;
}

/* 2. KHUNG HIỂN THỊ MÃ TRẠNG THÁI & BẮT NGOẠI LỆ (KẾ THỪA VER07: MÃ 200, 300, 400, 404, 500) */
.status-banner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 11px 18px;
    border-radius: 12px;
    border-left: 6px solid #198754;
    background-color: #e8f5e9;
    color: #1b5e20;
    box-shadow: 0 3px 10px rgba(0, 0, 0, 0.05);
    transition: all 0.25s ease;
}
.status-banner.hidden-banner {
    display: none !important;
}
.status-banner-left {
    display: flex;
    align-items: center;
    gap: 14px;
    flex-wrap: wrap;
}
.status-code-pill {
    font-weight: 800;
    font-size: 0.78rem;
    padding: 4px 12px;
    border-radius: 50px;
    background-color: #198754;
    color: #ffffff;
    letter-spacing: 0.5px;
    white-space: nowrap;
}
.status-text-group {
    display: flex;
    flex-direction: column;
}
.status-detail-sub {
    font-size: 0.84rem;
    opacity: 0.9;
}
.status-close-btn {
    background: transparent;
    border: none;
    font-size: 1.35rem;
    line-height: 1;
    color: inherit;
    opacity: 0.65;
    cursor: pointer;
    padding: 0 6px;
}
.status-close-btn:hover { opacity: 1; }

.status-banner.status-200 { border-left-color: #198754; background-color: #e8f5e9; color: #1b5e20; }
.status-banner.status-200 .status-code-pill { background-color: #198754; }

.status-banner.status-300 { border-left-color: #0d6efd; background-color: #e7f1ff; color: #084298; }
.status-banner.status-300 .status-code-pill { background-color: #0d6efd; }

.status-banner.status-400 { border-left-color: #fd7e14; background-color: #fff3cd; color: #664d03; }
.status-banner.status-400 .status-code-pill { background-color: #fd7e14; }

.status-banner.status-404 { border-left-color: #d97706; background-color: #fef3c7; color: #78350f; }
.status-banner.status-404 .status-code-pill { background-color: #d97706; }

.status-banner.status-500 { border-left-color: #dc3545; background-color: #f8d7da; color: #842029; }
.status-banner.status-500 .status-code-pill { background-color: #dc3545; }

/* 3. CARDS, BADGES & PORTAL COMPONENTS */
.stat-card, .book-card {
    transition: transform 0.22s ease, box-shadow 0.22s ease;
    border-radius: 16px;
}
.stat-card:hover, .book-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 24px rgba(0, 0, 0, 0.1) !important;
}

.icon-box {
    width: 56px;
    height: 56px;
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.6rem;
    flex-shrink: 0;
}

.book-cover {
    height: 220px;
    object-fit: cover;
    background-color: #e2e8f0;
}

.owner-badge-lib {
    background-color: #0d9488;
    color: #ffffff;
    font-weight: 700;
    font-size: 0.72rem;
    padding: 3px 9px;
    border-radius: 6px;
}

.owner-badge-p2p {
    background-color: #7c3aed;
    color: #ffffff;
    font-weight: 700;
    font-size: 0.72rem;
    padding: 3px 9px;
    border-radius: 6px;
}

.trust-pill {
    background: #fef3c7;
    color: #92400e;
    font-weight: 700;
    font-size: 0.74rem;
    padding: 3px 8px;
    border-radius: 6px;
}

.btn-xs {
    font-size: 0.75rem;
    padding: 3px 9px;
    border-radius: 20px;
}

/* 4. FLOATING GEMINI AI CHAT WIDGET (S13) */
.ai-chat-widget {
    position: fixed;
    right: 22px;
    bottom: 22px;
    z-index: 1080;
}

.ai-chat-fab {
    display: flex;
    align-items: center;
    gap: 8px;
    background: linear-gradient(135deg, #1d4ed8, #7c3aed);
    color: #ffffff;
    border: none;
    border-radius: 50px;
    padding: 12px 20px;
    font-weight: 700;
    cursor: pointer;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}
.ai-chat-fab:hover {
    transform: scale(1.04);
    box-shadow: 0 8px 22px rgba(29, 78, 216, 0.4) !important;
}

.ai-chat-popup {
    position: fixed;
    right: 22px;
    bottom: 80px;
    width: 365px;
    max-width: calc(100vw - 32px);
    height: 470px;
    max-height: calc(100vh - 120px);
    background-color: #ffffff;
    color: #1e293b;
    border: 1px solid #cbd5e1;
    border-radius: 16px;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.ai-chat-header {
    background: linear-gradient(135deg, #1d4ed8, #7c3aed);
}

.ai-chat-messages {
    flex: 1;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 10px;
    background-color: #f8fafc;
}

.ai-msg {
    max-width: 86%;
    padding: 9px 13px;
    border-radius: 14px;
    font-size: 0.86rem;
    line-height: 1.45;
    white-space: pre-wrap;
    word-break: break-word;
}
.ai-msg-bot {
    align-self: flex-start;
    background-color: #eff6ff;
    border: 1px solid #bfdbfe;
    border-bottom-left-radius: 4px;
}
.ai-msg-user {
    align-self: flex-end;
    background: #2563eb;
    color: #ffffff;
    border-bottom-right-radius: 4px;
}