:root {
    --primary: #6366f1;
    --primary-glow: rgba(99, 102, 241, 0.4);
    --secondary: #10b981;
    --secondary-glow: rgba(16, 185, 129, 0.4);
    --accent: #f59e0b;
    --dark: #0f172a;
    --text-main: #1e293b;
    --text-muted: #64748b;

    /* Premium Glassmorphism */
    --glass-bg: rgba(255, 255, 255, 0.8);
    --glass-border: rgba(255, 255, 255, 0.5);
    --glass-shadow: 0 10px 40px -10px rgba(0, 0, 0, 0.1);

    --bg-mesh:
        radial-gradient(at 0% 0%, rgba(99, 102, 241, 0.1) 0px, transparent 50%),
        radial-gradient(at 100% 0%, rgba(16, 185, 129, 0.08) 0px, transparent 50%),
        radial-gradient(at 100% 100%, rgba(245, 158, 11, 0.08) 0px, transparent 50%),
        radial-gradient(at 0% 100%, rgba(99, 102, 241, 0.1) 0px, transparent 50%);

    --radius-xl: 2.5rem;
    --radius-lg: 1.75rem;
    --nav-height: 90px;
    --danger: #ef4444;
    --danger-glow: rgba(239, 68, 68, 0.4);
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: 'Plus Jakarta Sans', sans-serif;
    color: var(--text-main);
    background: #fdfdff;
    background-image: var(--bg-mesh);
    background-attachment: fixed;
    min-height: 100vh;
}

/* Glass UI */
.glass {
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    box-shadow: var(--glass-shadow);
}

/* TOP NAVBAR DESIGN */
.top-navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--nav-height);
    z-index: 1000;
    border-radius: 0 0 2rem 2rem;
    padding: 0 2rem;
}

.nav-container {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.brand-wrap {
    display: flex;
    align-items: center;
    gap: 1rem;
    text-decoration: none;
    color: inherit;
}

/* Branding Logo */
.brand-wrap img {
    height: 50px;
    width: auto;
    transition: transform 0.3s ease;
}

.brand-wrap:hover img {
    transform: scale(1.05);
}

.horizontal-menu {
    display: flex;
    list-style: none;
    gap: 1.5rem;
    margin: 0;
    padding: 0;
}

.nav-link {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem 1.25rem;
    text-decoration: none;
    color: var(--text-muted);
    font-weight: 700;
    border-radius: 1.15rem;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.nav-link.active {
    background: var(--primary);
    color: white;
    box-shadow: 0 8px 20px -5px var(--primary-glow);
}

.nav-link:not(.active):hover {
    background: rgba(99, 102, 241, 0.08);
    color: var(--primary);
    transform: translateY(-2px);
}

/* Main Layout (Fluid 100%) */
.main-wrapper {
    margin-top: calc(var(--nav-height) + 1.5rem);
    width: 100%;
    padding: 0 2rem 3rem;
}

/* Ad Placement Styles */
.top-ad-banner {
    width: 100%;
    margin-bottom: 2rem;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.bottom-ad-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
    margin-top: 4rem;
}

@media (max-width: 768px) {
    .bottom-ad-grid {
        grid-template-columns: 1fr;
    }
}

/* Content Area */
.content-area {
    padding: 3rem;
    border-radius: var(--radius-xl);
}

.ad-sidebar {
    position: sticky;
    top: calc(var(--nav-height) + 1.5rem);
    height: calc(100vh - var(--nav-height) - 3rem);
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.ad-wrapper {
    background: rgba(255, 255, 255, 0.4);
    border-radius: var(--radius-lg);
    padding: 1rem;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* Reveal Animation */
@keyframes reveal {
    from {
        opacity: 0;
        transform: translateY(25px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.reveal {
    opacity: 0;
    animation: reveal 0.8s cubic-bezier(0.25, 1, 0.5, 1) forwards;
}

.delay-1 {
    animation-delay: 0.15s;
}

.delay-2 {
    animation-delay: 0.3s;
}

/* Highlight Blink Animation for New Rules */
@keyframes highlightBlink {
    0% {
        background-color: rgba(99, 102, 241, 0.4);
        transform: scale(1.02);
        box-shadow: 0 0 15px rgba(99, 102, 241, 0.4);
    }

    50% {
        background-color: rgba(255, 255, 255, 1);
        transform: scale(1);
        box-shadow: none;
    }

    100% {
        background-color: rgba(99, 102, 241, 0.4);
        transform: scale(1.02);
        box-shadow: 0 0 15px rgba(99, 102, 241, 0.4);
    }
}

.blink-highlight {
    animation: highlightBlink 0.7s ease-in-out 3;
    border: 2px solid var(--primary) !important;
}

/* Status Pill */
.status-pill {
    padding: 0.5rem 1rem;
    background: white;
    border-radius: 2rem;
    font-size: 0.75rem;
    font-weight: 800;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.03);
}

.status-indicator {
    width: 6px;
    height: 6px;
    background: var(--secondary);
    border-radius: 50%;
    box-shadow: 0 0 10px var(--secondary);
}

/* Tool Grid Hub (iLovePDF Inspired) */
.tools-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: 1.5rem;
    margin-top: 2rem;
}

.tool-card {
    background: white;
    border-radius: 1.25rem;
    padding: 2.5rem 1.5rem;
    text-decoration: none;
    color: inherit;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    border: 1px solid rgba(0, 0, 0, 0.05);
    position: relative;
    overflow: hidden;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
}

.tool-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    border-color: var(--primary);
}

.tool-card .tool-icon {
    width: 64px;
    height: 64px;
    border-radius: 1.25rem;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    color: white;
    margin-bottom: 1.5rem;
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
}

.tool-card h4 {
    font-weight: 800;
    font-size: 1.2rem;
    margin-bottom: 0.75rem;
    color: var(--dark);
}

.tool-card p {
    font-size: 0.85rem;
    color: var(--text-muted);
    line-height: 1.5;
    margin: 0;
}

.tool-card .tool-tag {
    position: absolute;
    top: 1rem;
    right: 1rem;
    padding: 0.25rem 0.75rem;
    border-radius: 2rem;
    font-size: 0.65rem;
    font-weight: 800;
    text-transform: uppercase;
    background: rgba(0, 0, 0, 0.05);
}

.icon-box {
    width: 90px;
    height: 90px;
    border-radius: 2rem;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.75rem;
    color: white;
    margin-bottom: 2rem;
}

.module-card h3 {
    font-weight: 800;
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

.module-card p {
    color: var(--text-muted);
    line-height: 1.6;
    font-size: 0.95rem;
}

.btn-premium {
    padding: 0.9rem 1.8rem;
    border-radius: 1.15rem;
    font-weight: 800;
    border: none;
    cursor: pointer;
    transition: all 0.3s ease;
}

.btn-premium-primary {
    background: var(--primary);
    color: white;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

.btn-premium-danger {
    background: linear-gradient(135deg, #ef4444 0%, #dc2626 100%);
    color: white;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

.btn-premium-primary:hover {
    transform: scale(1.05);
    box-shadow: 0 10px 20px var(--primary-glow);
}

.btn-premium-danger:hover {
    transform: scale(1.05);
    box-shadow: 0 10px 20px var(--danger-glow);
    color: white;
}

/* Premium Form Elements */
.form-control,
.form-select,
.glass-input {
    border-radius: 1.15rem;
    padding: 0.8rem 1.25rem;
    border: 1px solid #eef0f7;
    background: #ffffff;
    font-weight: 600;
    color: var(--text-main);
    transition: all 0.3s ease;
    font-size: 0.95rem;
}

.form-control:focus,
.form-select:focus,
.glass-input:focus {
    border-color: var(--primary);
    background: #ffffff;
    box-shadow: 0 0 0 4px var(--primary-glow);
    outline: none;
}

.form-select {
    cursor: pointer;
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3e%3cpath fill='none' stroke='%236366f1' stroke-linecap='round' stroke-linejoin='round' stroke-width='2' d='M2 5l6 6 6-6'/%3e%3c/svg%3e");
    background-repeat: no-repeat;
    background-position: right 1rem center;
    background-size: 16px 12px;
}

/* Scrollbar Styling */
.scroll-thin::-webkit-scrollbar {
    width: 8px;
}

.scroll-thin::-webkit-scrollbar-track {
    background: rgba(0, 0, 0, 0.03);
    border-radius: 10px;
}

.scroll-thin::-webkit-scrollbar-thumb {
    background: rgba(99, 102, 241, 0.4);
    /* Primary color glow */
    border-radius: 10px;
    border: 2px solid rgba(255, 255, 255, 0.5);
    /* Adds a little contrast within track */
}

.scroll-thin::-webkit-scrollbar-thumb:hover {
    background: rgba(99, 102, 241, 0.7);
}

/* Modern List Adjustments */
.lista-alunos-modern,
.lista-items-modern {
    list-style: none;
    padding: 0;
    padding-right: 0.5rem;
    /* slightly larger to accommodate thicker scrollbar */
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    max-height: 35vh;
    /* Reduced height as requested */
    overflow-y: scroll;
    /* Forces scrollbar to be always visible */
    overflow-x: hidden;
}

/* Robust Fix for trapped modals and backdrop issues */
body.modal-open .reveal,
body.modal-open .content-area,
body.modal-open main.glass {
    animation: none !important;
    transform: none !important;
    opacity: 1 !important;
    z-index: 0 !important;
    perspective: none !important;
}

.modal {
    z-index: 1070 !important;
}

.modal-backdrop {
    z-index: 1060 !important;
    background-color: rgba(15, 23, 42, 0.05) !important;
    /* Even lighter blue glaze */
    backdrop-filter: blur(2px) !important;
    /* Subtle glass effect, very clear background */
    -webkit-backdrop-filter: blur(2px) !important;
}

.modal-content.glass {
    background: #ffffff !important;
    border: 1px solid rgba(0, 0, 0, 0.15) !important;
    box-shadow: 0 40px 100px rgba(0, 0, 0, 0.3) !important;
}

/* Light theme for Autocomplete/Datalist suggestions */
::-webkit-calendar-picker-indicator {
    filter: invert(0.5);
    cursor: pointer;
}

input::-webkit-calendar-picker-indicator:hover {
    filter: invert(0);
}

/* Custom Datalist Styling (where supported) */
datalist {
    background-color: #ffffff;
    color: #1e293b;
    border-radius: 1rem;
    padding: 0.5rem;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
}

.carteira-modern {
    transition: background 0.25s ease, border-color 0.25s ease, transform 0.25s ease, box-shadow 0.25s ease;
    border-radius: 1.25rem;
    background: #ffffff;
    border: 1px solid rgba(0, 0, 0, 0.07);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.06);
}

.carteira-modern:hover {
    background: #c7cbff;
    border-color: #6366f1;
    transform: translateY(-4px);
    box-shadow: 0 8px 28px rgba(99, 102, 241, 0.3);
}

/* Modern Action Pills for Desks */
.action-pill {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.85rem;
    cursor: pointer;
    transition: all 0.25s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    background: rgba(0, 0, 0, 0.04);
    color: var(--text-muted);
    border: 1px solid rgba(0, 0, 0, 0.05);
}

.action-pill:hover {
    transform: scale(1.15);
    background: white;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
}

.action-pill.active {
    background: var(--primary);
    color: white;
    border-color: var(--primary);
    box-shadow: 0 4px 12px var(--primary-glow);
}

.action-pill.danger {
    color: var(--danger);
}

.action-pill.danger:hover {
    background: var(--danger);
    color: white;
    border-color: var(--danger);
    box-shadow: 0 4px 12px var(--danger-glow);
}

/* Collapsible Sidebar Logic */
.transition-layout,
.transition-sidebar,
.transition-main {
    transition: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

.sidebar-collapsed #sidebarPanel {
    transform: translateX(-110%);
    opacity: 0;
    pointer-events: none;
    position: absolute;
    width: 0;
}

.sidebar-collapsed #mainPanel {
    width: 100% !important;
    flex: 0 0 100% !important;
    max-width: 100% !important;
}

.sidebar-collapsed #sidebarExpandBtn {
    display: flex !important;
    animation: slideInLeft 0.5s ease forwards;
}

@keyframes slideInLeft {
    from {
        transform: translateX(-100%);
    }

    to {
        transform: translateX(0);
    }
}

.fs-xs {
    font-size: 0.75rem !important;
    margin-bottom: 0 !important;
}

/* =============================
   PRINT / PDF — Paisagem Premium
   ============================= */

/* @page no nível RAIZ — browsers respeitam melhor assim */
@page {
    size: A4 landscape;
    margin: 0.6cm 0.8cm 0.6cm 0.8cm;
}

@media screen {
    .print-only {
        display: none !important;
    }
}

@media print {

    /* Corpo da página limpo */
    body {
        background: white !important;
        padding: 0 !important;
        margin: 0 !important;
        color: #111 !important;
        font-family: 'Plus Jakarta Sans', Arial, sans-serif !important;
        -webkit-print-color-adjust: exact !important;
        print-color-adjust: exact !important;
    }

    /* --- Ocultar elementos não essenciais --- */
    /* Anuncios AdSense - REMOVER DO PDF */
    .no-print,
    .top-ad-banner,
    .bottom-ad-grid,
    .adsbygoogle,
    ins.adsbygoogle,
    /* Menu de navegação — oculto com display + visibility para cobrir position:fixed */
    header,
    header *,
    footer,
    aside,
    nav,
    .top-navbar,
    .nav-container,
    .horizontal-menu,
    .brand-wrap,
    .status-pill,
    .btn-premium,
    .nav-pills,
    .nav-tabs,
    .tab-content,
    .icon-box,
    #salvarBtn,
    #imprimirBtn,
    #novaTurmaBtn,
    #excluirTurmaBtn,
    #renomearTurmaBtn,
    .border-bottom,
    .modal-backdrop,
    .pino-icone,
    .lista-alunos-modern,
    #listaAlunos,
    .col-xl-4,
    #sidebarPanel,
    #aplicarGradeBtn,
    #autoDistribuirBtn,
    #realocarBtn,
    #linhasInput,
    #colunasInput,
    #sidebarExpandBtn,
    .d-flex.flex-wrap.justify-content-between.align-items-center.mb-4,
    .mt-4.pt-4.border-top.border-light,
    .mt-4.opacity-75.small,
    .controls-row,
    .action-pill,
    .fa-chair,
    header.top-navbar,
    header.top-navbar * {
        display: none !important;
        visibility: hidden !important;
        opacity: 0 !important;
        height: 0 !important;
        pointer-events: none !important;
        position: absolute !important;
        top: -9999px !important;
    }

    /* --- Exibir elementos de impressão --- */
    .content-area,
    .view-content,
    section,
    main {
        opacity: 1 !important;
        visibility: visible !important;
        display: block !important;
        animation: none !important;
        transform: none !important;
        overflow: visible !important;
    }

    /* --- Wrappers --- */
    html,
    body {
        margin-top: 0 !important;
        padding-top: 0 !important;
    }

    .main-wrapper {
        margin: 0 !important;
        padding: 0 !important;
        width: 100% !important;
        margin-top: 0 !important;
    }

    .content-area {
        padding: 0 !important;
        border: none !important;
        box-shadow: none !important;
        background: white !important;
        margin: 0 !important;
        width: 100% !important;
    }

    .col-xl-8,
    #mainPanel {
        width: 100% !important;
        flex: 0 0 100% !important;
        max-width: 100% !important;
        padding: 0 !important;
        margin: 0 !important;
    }

    .row.g-4 {
        margin: 0 !important;
        gap: 0 !important;
    }

    /* --- Painel vidro sem efeito --- */
    .glass {
        background: white !important;
        backdrop-filter: none !important;
        border: none !important;
        box-shadow: none !important;
    }

    /* ============================
    /* ============================
       CABEÇALHO DE IMPRESSÃO — 3 colunas
       [Logo+URL] | [TURMA] | [Data]
       ============================ */
    #print-header {
        display: block !important;
        margin-bottom: 6px !important;
        padding: 0 !important;
    }

    .print-header-inner {
        display: flex !important;
        align-items: center !important;
        justify-content: space-between !important;
        padding: 4px 0 6px 0 !important;
        gap: 8px !important;
    }

    /* ESQUERDA: Logo + URL */
    .print-logo-area {
        display: flex !important;
        align-items: center !important;
        gap: 10px !important;
        flex-shrink: 0 !important;
        flex: 0 0 auto !important;
    }

    .print-logo {
        height: 40px !important;
        width: auto !important;
        display: block !important;
    }

    .print-site-info {
        display: flex !important;
        flex-direction: column !important;
        line-height: 1.2 !important;
    }

    .print-site-url {
        font-size: 11pt !important;
        font-weight: 800 !important;
        color: #6366f1 !important;
        letter-spacing: -0.3px !important;
        display: block !important;
    }

    .print-site-tagline {
        font-size: 6.5pt !important;
        color: #64748b !important;
        font-weight: 500 !important;
        display: block !important;
    }

    /* CENTRO: Nome da Turma (onde ficava o menu de navegação) */
    .print-turma-center {
        display: flex !important;
        flex-direction: column !important;
        align-items: center !important;
        justify-content: center !important;
        flex: 1 !important;
        text-align: center !important;
        padding: 0 16px !important;
    }

    .print-turma-label {
        font-size: 6pt !important;
        font-weight: 800 !important;
        color: #6366f1 !important;
        letter-spacing: 2px !important;
        text-transform: uppercase !important;
        display: block !important;
        margin-bottom: 2px !important;
    }

    .print-turma-name {
        font-size: 16pt !important;
        font-weight: 800 !important;
        color: #0f172a !important;
        margin: 0 !important;
        line-height: 1.1 !important;
        display: block !important;
        letter-spacing: -0.5px !important;
    }

    /* DIREITA: Data */
    .print-date-area {
        display: flex !important;
        flex-direction: column !important;
        align-items: flex-end !important;
        flex-shrink: 0 !important;
        flex: 0 0 auto !important;
        text-align: right !important;
    }

    .print-date-label {
        font-size: 6pt !important;
        font-weight: 800 !important;
        color: #6366f1 !important;
        letter-spacing: 2px !important;
        text-transform: uppercase !important;
        display: block !important;
        margin-bottom: 2px !important;
    }

    .print-date {
        font-size: 9pt !important;
        color: #1e293b !important;
        font-weight: 700 !important;
        display: block !important;
    }

    .print-divider {
        height: 2px !important;
        background: linear-gradient(90deg, #6366f1 0%, #10b981 60%, transparent 100%) !important;
        border-radius: 2px !important;
        margin-bottom: 6px !important;
        display: block !important;
    }

    /* Classe legada — não usada, mas mantida para compatibilidade */
    .print-title-area {
        display: none !important;
    }

    .print-turma-title {
        display: none !important;
    }

    /* ============================
       GRID DAS CARTEIRAS
       ============================ */
    .grid-sala-modern {
        display: grid !important;
        grid-template-columns: repeat(auto-fit, minmax(80px, 1fr)) !important;
        justify-content: center !important;
        align-content: start !important;
        width: 100% !important;
        gap: 5px !important;
        margin: 0 auto !important;
    }

    .carteira-modern {
        border: 1.5px solid #c7cbff !important;
        border-radius: 8px !important;
        background: #f8f9ff !important;
        min-height: 72px !important;
        height: auto !important;
        page-break-inside: avoid !important;
        padding: 4px 3px !important;
        display: flex !important;
        flex-direction: column !important;
        align-items: center !important;
        justify-content: center !important;
    }

    .carteira-modern.active {
        background: #eef0ff !important;
        border-color: #6366f1 !important;
    }

    .aluno-tag {
        color: #111 !important;
        font-weight: 700 !important;
        font-size: 7.5pt !important;
        line-height: 1.15 !important;
        text-align: center !important;
        word-break: break-word !important;
        max-height: unset !important;
        overflow: hidden !important;
        display: -webkit-box !important;
        -webkit-box-orient: vertical !important;
        -webkit-line-clamp: 3 !important;
        line-clamp: 3 !important;
        width: 100% !important;
        padding: 0 2px !important;
    }

    .student-photo-placeholder {
        width: 28px !important;
        height: 28px !important;
        border: 1px solid #bbb !important;
        border-radius: 50% !important;
        margin: 2px auto 2px auto !important;
        display: flex !important;
        align-items: center !important;
        justify-content: center !important;
        background: #e8eaff !important;
    }

    .student-photo-placeholder i {
        font-size: 10px !important;
        color: #6366f1 !important;
    }
}