:root {
    /* Colors base */
    --color-white: #ffffff;
    --color-dark-green: #0b4619;
    --color-teal: #005f73;
    --color-lead: #2b2d42; /* Chumbo */
    --color-lead-light: #3d405b;
    --color-red: #d90429;
    
    /* Light Theme Variables */
    --bg-main: #f4f7f6;
    --bg-sidebar: #ffffff;
    --bg-card: #ffffff;
    --text-main: var(--color-lead);
    --text-muted: #6c757d;
    --border-color: #e9ecef;
    --accent: var(--color-teal);
    --accent-hover: #0a9396;
    --logo-bg: transparent;
}

body.dark-mode {
    /* Dark Theme Variables */
    --bg-main: #1a1a24; /* Dark lead background */
    --bg-sidebar: #222230;
    --bg-card: #2b2b3c;
    --text-main: #e9ecef;
    --text-muted: #adb5bd;
    --border-color: #3d405b;
    --accent: #94d2bd;
    --accent-hover: #e9d8a6;
    --logo-bg: rgba(255, 255, 255, 0.85); /* Protect dark logos in dark mode */
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Inter', sans-serif;
    transition: background-color 0.3s ease, color 0.3s ease;
}

body {
    background-color: var(--bg-main);
    color: var(--text-main);
    display: flex;
    flex-direction: column;
    height: 100vh;
    overflow: hidden;
}

/* TOPBAR */
.topbar {
    height: 70px;
    background-color: var(--bg-sidebar);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 20px;
    z-index: 100;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
}

.logo-container {
    display: flex;
    align-items: center;
    gap: 15px;
}

.logo-bg {
    background-color: var(--logo-bg);
    border-radius: 8px;
    padding: 5px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.logo {
    height: 40px;
    width: auto;
}

.logo-container h1 {
    font-size: 1.2rem;
    color: var(--text-main);
    font-weight: 700;
}

.menu-toggle, .theme-toggle {
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--text-muted);
    padding: 8px;
    border-radius: 50%;
}

.menu-toggle:hover, .theme-toggle:hover {
    background-color: var(--bg-main);
    color: var(--accent);
}

/* APP CONTAINER */
.app-container {
    display: flex;
    flex: 1;
    overflow: hidden;
}

/* SIDEBAR */
.sidebar {
    width: 280px;
    background-color: var(--bg-sidebar);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    overflow-y: auto;
    transition: transform 0.3s ease;
}

.sidebar.collapsed {
    transform: translateX(-100%);
    position: absolute;
    height: calc(100vh - 70px);
    z-index: 99;
}

.sidebar-header {
    padding: 20px;
    border-bottom: 1px solid var(--border-color);
}

.sidebar-header h3 {
    font-size: 0.9rem;
    text-transform: uppercase;
    color: var(--text-muted);
    letter-spacing: 1px;
}

.doc-list {
    list-style: none;
    padding: 10px 0;
}

.doc-list li {
    padding: 12px 20px;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--text-main);
    font-size: 0.95rem;
    border-left: 3px solid transparent;
}

.doc-list li:hover {
    background-color: var(--bg-main);
    color: var(--accent);
}

.doc-list li.active {
    background-color: rgba(0, 95, 115, 0.1);
    color: var(--accent);
    border-left-color: var(--accent);
    font-weight: 600;
}

/* MAIN CONTENT */
.main-content {
    flex: 1;
    overflow-y: auto;
    padding: 30px;
    position: relative;
}

/* CARDS */
.welcome-card, .feedback-card {
    background-color: var(--bg-card);
    border-radius: 12px;
    padding: 30px;
    margin-bottom: 30px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.03);
    border: 1px solid var(--border-color);
}

.welcome-card h2 {
    color: var(--color-dark-green);
}
body.dark-mode .welcome-card h2 {
    color: var(--accent);
}

.welcome-card p, .feedback-card p {
    color: var(--text-muted);
    margin-top: 10px;
    line-height: 1.6;
}

/* FORM */
.input-group {
    margin-top: 20px;
    display: flex;
    flex-direction: column;
}

.row {
    display: flex;
    gap: 20px;
}

.row .input-group {
    flex: 1;
}

label {
    font-size: 0.9rem;
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--text-main);
}

input[type="text"], input[type="tel"], input[type="email"], textarea {
    background-color: var(--bg-main);
    border: 1px solid var(--border-color);
    color: var(--text-main);
    padding: 12px 15px;
    border-radius: 8px;
    font-size: 0.95rem;
    outline: none;
    transition: border-color 0.3s;
}

input:focus, textarea:focus {
    border-color: var(--accent);
}

.radio-group {
    display: flex;
    flex-direction: column;
    gap: 10px;
    margin-top: 5px;
}

.radio-group label {
    font-weight: 400;
    display: flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
}

.char-count {
    font-size: 0.8rem;
    color: var(--text-muted);
    text-align: right;
    margin-top: 5px;
}

.btn-submit {
    margin-top: 25px;
    background-color: var(--accent);
    color: var(--color-white);
    border: none;
    padding: 14px 24px;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: background-color 0.3s;
    width: 100%;
}

.btn-submit:hover {
    background-color: var(--accent-hover);
}

.form-message {
    margin-top: 15px;
    padding: 10px;
    border-radius: 6px;
    display: none;
    text-align: center;
}

.form-message.success {
    display: block;
    background-color: rgba(11, 70, 25, 0.1);
    color: var(--color-dark-green);
    border: 1px solid var(--color-dark-green);
}
body.dark-mode .form-message.success {
    color: #4ade80;
    border-color: #4ade80;
}

.form-message.error {
    display: block;
    background-color: rgba(217, 4, 41, 0.1);
    color: var(--color-red);
    border: 1px solid var(--color-red);
}

/* MARKDOWN VIEWER */
.markdown-body {
    background-color: var(--bg-card);
    padding: 40px;
    border-radius: 12px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.03);
    border: 1px solid var(--border-color);
    line-height: 1.7;
    font-size: 1rem;
}

.markdown-body h1, .markdown-body h2, .markdown-body h3 {
    color: var(--color-teal);
    margin-bottom: 15px;
    margin-top: 25px;
}
body.dark-mode .markdown-body h1, 
body.dark-mode .markdown-body h2, 
body.dark-mode .markdown-body h3 {
    color: var(--accent);
}

.markdown-body p, .markdown-body li {
    margin-bottom: 10px;
}

.markdown-body ul, .markdown-body ol {
    margin-left: 20px;
    margin-bottom: 20px;
}

.markdown-body table {
    width: 100%;
    border-collapse: collapse;
    margin: 20px 0;
}

.markdown-body th, .markdown-body td {
    border: 1px solid var(--border-color);
    padding: 10px;
    text-align: left;
}

.markdown-body th {
    background-color: var(--bg-main);
}

/* RESPONSIVE */
@media (max-width: 768px) {
    .sidebar {
        position: absolute;
        height: calc(100vh - 70px);
        z-index: 99;
        box-shadow: 5px 0 15px rgba(0,0,0,0.1);
    }
    
    /* Esconde a sidebar por padrão no celular */
    .sidebar.mobile-hidden {
        transform: translateX(-100%);
    }

    .sidebar.mobile-visible {
        transform: translateX(0);
    }
    
    .row {
        flex-direction: column;
        gap: 0;
    }
    
    .main-content {
        padding: 15px;
    }
    
    .markdown-body {
        padding: 20px;
    }
}

/* MURAL DE DISCUSSÕES */
.mural-card {
    background-color: var(--bg-card);
    border-radius: 12px;
    padding: 30px;
    margin-bottom: 30px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.03);
    border: 1px solid var(--border-color);
}

.mural-card h3 {
    color: var(--color-teal);
    margin-bottom: 5px;
}
body.dark-mode .mural-card h3 {
    color: var(--accent);
}

.mural-container {
    margin-top: 20px;
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.post-card {
    background-color: var(--bg-main);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    padding: 20px;
}

.post-header {
    display: flex;
    justify-content: space-between;
    margin-bottom: 10px;
    font-size: 0.9rem;
}

.post-author {
    font-weight: 600;
    color: var(--color-dark-green);
}
body.dark-mode .post-author { color: var(--accent-hover); }

.post-date {
    color: var(--text-muted);
    font-size: 0.8rem;
}

.post-text {
    margin-bottom: 15px;
    line-height: 1.5;
    font-size: 0.95rem;
}

.post-actions {
    display: flex;
    gap: 15px;
    margin-bottom: 15px;
    border-top: 1px solid var(--border-color);
    padding-top: 15px;
}

.btn-action {
    background: none;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 5px;
    font-size: 0.9rem;
    transition: color 0.3s;
}

.btn-action:hover {
    color: var(--accent);
}

.btn-action.like:hover { color: #4ade80; }
.btn-action.dislike:hover { color: var(--color-red); }

/* Respostas */
.post-replies {
    background-color: var(--bg-sidebar);
    border-radius: 8px;
    padding: 15px;
    margin-top: 10px;
    border: 1px solid var(--border-color);
}

.reply-item {
    margin-bottom: 10px;
    padding-bottom: 10px;
    border-bottom: 1px solid var(--border-color);
}
.reply-item:last-child { border-bottom: none; margin-bottom: 0; padding-bottom: 0;}

.reply-author { font-weight: 600; font-size: 0.85rem; }
.reply-text { font-size: 0.85rem; color: var(--text-muted); margin-top: 3px; }

.reply-form {
    display: flex;
    gap: 10px;
    margin-top: 15px;
}

.reply-form input {
    flex: 1;
    padding: 8px 12px;
    font-size: 0.85rem;
}

.reply-form button {
    padding: 8px 15px;
    background-color: var(--color-teal);
    color: white;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    font-size: 0.85rem;
}

/* IMAGE MODAL */
.modal {
    display: none; 
    position: fixed; 
    z-index: 1000; 
    padding-top: 100px; 
    left: 0;
    top: 0;
    width: 100%; 
    height: 100%; 
    overflow: auto; 
    background-color: rgba(0,0,0,0.9); 
}

.modal-content {
    margin: auto;
    display: block;
    max-width: 90%;
    max-height: 80vh;
    object-fit: contain;
    border-radius: 8px;
    animation-name: zoom;
    animation-duration: 0.6s;
    background-color: #fff;
    padding: 20px;
}

@keyframes zoom {
    from {transform:scale(0)} 
    to {transform:scale(1)}
}

.close-modal {
    position: absolute;
    top: 15px;
    right: 35px;
    color: #f1f1f1;
    font-size: 40px;
    font-weight: bold;
    transition: 0.3s;
    cursor: pointer;
}

.close-modal:hover,
.close-modal:focus {
    color: #bbb;
    text-decoration: none;
    cursor: pointer;
}