/* =========================================
   SISTEMA ESTUDO - CSS BASE GLOBAL
   Variables & Theming
========================================= */
:root {
    /* LIGHT MODE (Default) */
    --bg-main: #f5f7fa;
    --bg-header: #ffffff;
    --bg-card: #ffffff;
    
    --color-primary: #4F46E5; /* Indigo */
    --color-primary-hover: #4338ca;
    --color-text: #1f2937;
    --color-text-muted: #6b7280;
    
    --border-color: #e5e7eb;
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    
    --btn-text: #ffffff;
}

body.dark-mode {
    /* DARK MODE */
    --bg-main: #111827;
    --bg-header: #1f2937;
    --bg-card: #1f2937;
    
    --color-primary: #6366f1; /* Light Indigo */
    --color-primary-hover: #818cf8;
    --color-text: #f9fafb;
    --color-text-muted: #9ca3af;
    
    --border-color: #374151;
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.5);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.4), 0 2px 4px -1px rgba(0, 0, 0, 0.3);
    
    --btn-text: #ffffff;
}

/* =========================================
   RESET & TYPOGRAPHY
========================================= */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--bg-main);
    color: var(--color-text);
    line-height: 1.6;
    transition: background-color 0.3s ease, color 0.3s ease;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

a {
    text-decoration: none;
    color: var(--color-primary);
}

/* =========================================
   HEADER
========================================= */
.estudo-header {
    background-color: var(--bg-header);
    border-bottom: 1px solid var(--border-color);
    box-shadow: var(--shadow-sm);
    position: sticky;
    top: 0;
    z-index: 50;
    transition: background-color 0.3s ease, border-color 0.3s ease;
}

.header-container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo-area {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    cursor: pointer;
}

.logo-icon {
    font-size: 1.8rem;
    color: var(--color-primary);
}

.logo-text {
    font-size: 1.5rem;
    font-weight: 700;
    letter-spacing: -0.5px;
}

/* Global Search Config */
.search-area {
    flex-grow: 1;
    max-width: 400px;
    margin: 0 2rem;
}

.search-form {
    display: flex;
    align-items: center;
    background-color: var(--bg-main);
    border: 1px solid var(--border-color);
    border-radius: 999px;
    padding: 0.25rem 0.5rem;
    transition: border-color 0.2s;
}

.search-form:focus-within {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 2px rgba(79, 70, 229, 0.2);
}

.search-input {
    flex-grow: 1;
    background: transparent;
    border: none;
    padding: 0.5rem 1rem;
    color: var(--color-text);
    font-family: inherit;
    font-size: 0.95rem;
}

.search-input:focus {
    outline: none;
}

.search-button {
    background: none;
    border: none;
    color: var(--color-text-muted);
    padding: 0.5rem;
    cursor: pointer;
    border-radius: 50%;
    transition: color 0.2s;
}

.search-button:hover {
    color: var(--color-primary);
}

/* Header Layout Base */
.header-left {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.menu-toggle {
    display: none; /* Hide on Desktop */
    background: none;
    border: none;
    color: var(--color-text);
    font-size: 1.5rem;
    cursor: pointer;
    transition: color 0.2s;
}
.menu-toggle:hover {
    color: var(--color-primary);
}

.nav-area {
    display: flex;
    align-items: center;
    gap: 2rem;
}

.nav-header-mobile {
    display: none; /* Only for Mobile drawer */
}

/* Main Navigation Links (Vitrine, Aluno, Painel) */
.main-nav {
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

.nav-link {
    font-weight: 600;
    color: var(--color-text-muted);
    font-size: 0.95rem;
    padding: 0.5rem 0.75rem;
    border-radius: 8px;
    transition: all 0.2s;
}

.nav-link i {
    margin-right: 0.4rem;
}

.nav-link:hover, .nav-link.active {
    background-color: var(--bg-main);
    color: var(--color-primary);
}

/* Overlay do Menu Mobile */
.menu-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background-color: rgba(0,0,0,0.5);
    z-index: 90;
    display: flex;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease;
}

.nav-actions {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding-left: 1.5rem;
    border-left: 1px solid var(--border-color);
}

/* Responsividade do Header Mobile (Drawer) */
@media (max-width: 900px) {
    .menu-toggle {
        display: block;
    }

    /* Menu Base converte em Drawer esquerdo */
    .nav-area {
        position: fixed;
        top: 0;
        left: -300px; /* Hidden off-screen */
        width: 280px;
        height: 100vh;
        background-color: var(--bg-header);
        flex-direction: column;
        align-items: stretch;
        justify-content: flex-start;
        padding: 0;
        z-index: 100;
        transition: left 0.3s ease;
        overflow-y: auto;
        box-shadow: 4px 0 15px rgba(0,0,0,0.1);
    }
    
    .nav-area.open {
        left: 0; /* Desliza pra dentro */
    }

    .menu-overlay.open {
        opacity: 1;
        pointer-events: auto;
    }

    .nav-header-mobile {
        display: flex;
        justify-content: space-between;
        align-items: center;
        padding: 1.5rem;
        border-bottom: 1px solid var(--border-color);
    }

    .nav-header-mobile h2 {
        font-size: 1.25rem;
        font-weight: 700;
        margin:0;
    }

    .menu-close {
        background: none;
        border: none;
        color: var(--color-text);
        font-size: 1.5rem;
        cursor: pointer;
    }

    .main-nav {
        flex-direction: column;
        align-items: stretch;
        padding: 1rem;
        gap: 0.5rem;
    }

    .nav-link {
        padding: 1rem;
        font-size: 1rem;
    }

    .nav-actions {
        flex-direction: column;
        align-items: stretch;
        padding: 1.5rem;
        border-left: none;
        border-top: 1px solid var(--border-color);
        gap: 1.5rem;
    }
}

/* Theme Toggle Button */
.theme-btn {
    background: none;
    border: none;
    color: var(--color-text-muted);
    font-size: 1.25rem;
    cursor: pointer;
    transition: color 0.2s;
    padding: 0.5rem;
    border-radius: 50%;
}
.theme-btn:hover {
    color: var(--color-primary);
}

/* User Info */
.user-info {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.user-name {
    font-weight: 600;
}

.login-btn {
    background-color: var(--color-primary);
    color: var(--btn-text);
    padding: 0.5rem 1.25rem;
    border-radius: 9999px;
    font-size: 0.95rem;
    font-weight: 600;
    transition: background-color 0.2s;
}
.login-btn:hover {
    background-color: var(--color-primary-hover);
    color: var(--btn-text);
}

.logout-btn {
    color: var(--color-text-muted);
    transition: color 0.2s;
}
.logout-btn:hover {
    color: #ef4444; /* red */
}

/* =========================================
   FORMS & BUTTONS (GLOBAL GLOBALS)
========================================= */
.form-moderno {
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.form-group label {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--color-text);
}

.input-form {
    background-color: var(--bg-main);
    border: 1px solid var(--border-color);
    color: var(--color-text);
    padding: 0.75rem 1rem;
    border-radius: 8px;
    font-size: 1rem;
    font-family: inherit;
    transition: all 0.2s ease;
}

.input-form:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.2);
}

.form-row {
    display: flex;
    gap: 1.5rem;
}

.col-50 {
    flex: 1 1 50%;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    border-radius: 8px;
    font-weight: 600;
    font-size: 0.95rem;
    cursor: pointer;
    transition: all 0.2s;
    border: 1px solid transparent;
}

.btn-primary {
    background-color: var(--color-primary);
    color: #fff;
}

.btn-primary:hover {
    background-color: var(--color-primary-hover);
    transform: translateY(-1px);
}

.btn-secondary {
    background-color: #10B981;
    color: #fff;
}

.btn-secondary:hover {
    background-color: #059669;
}

.btn-outline {
    background-color: transparent;
    border-color: var(--border-color);
    color: var(--color-text);
}

.btn-outline:hover {
    border-color: var(--color-primary);
    color: var(--color-primary);
}

.btn-block {
    width: 100%;
}

@media (max-width: 768px) {
    .form-row {
        flex-direction: column;
        gap: 1.25rem;
    }
}

/* =========================================
   MAIN CONTENT
========================================= */
.estudo-main {
    flex-grow: 1;
    max-width: 1280px;
    margin: 0 auto;
    width: 100%;
    padding: 2rem;
}

/* ==============================================
   MODAL NATIVO CSS (Rápido e sem JS Dependencies)
   GLOBAL PARA TODAS AS PAGINAS
============================================== */
.modal-overlay {
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    background-color: rgba(0,0,0,0.6);
    backdrop-filter: blur(3px);
    z-index: 999;
    display: flex;
    justify-content: center;
    align-items: center;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease;
}

.modal-overlay:target {
    opacity: 1;
    pointer-events: auto;
}

.modal-box {
    background-color: var(--bg-header);
    width: 100%;
    max-width: 650px;
    max-height: 90vh; /* Impede que seja maior que a tela */
    overflow-y: auto; /* Adiciona scroll interno se o conteudo for grande */
    border-radius: 16px;
    padding: 2.5rem;
    position: relative;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
    transform: translateY(-20px);
    transition: transform 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.modal-overlay:target .modal-box {
    transform: translateY(0);
}

.modal-close {
    position: absolute;
    top: 1.5rem;
    right: 1.5rem;
    font-size: 1.5rem;
    color: var(--color-text-muted);
    transition: color 0.2s;
}

.modal-close:hover {
    color: #EF4444;
}

.modal-box h3 {
    font-size: 1.5rem;
    margin-bottom: 0.2rem;
    color: var(--color-text);
}

.modal-subtitle {
    color: var(--color-text-muted);
    font-size: 0.95rem;
    margin-bottom: 1rem;
}

/* Responsividade Mobile Tweak Global */
@media (max-width: 768px) {
    .modal-box {
        max-width: 95%;
        padding: 1.5rem;
    }
}

/* =========================================
   FOOTER
========================================= */
.estudo-footer {
    background-color: var(--bg-header);
    border-top: 1px solid var(--border-color);
    padding: 2rem;
    text-align: center;
    color: var(--color-text-muted);
    font-size: 0.9rem;
    transition: background-color 0.3s ease, border-color 0.3s ease;
}