/* Reset e base */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    -webkit-tap-highlight-color: transparent;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Fira Code', monospace;
    background: var(--main-bg);
    color: var(--text-primary);
    height: 100vh;
    overflow: hidden;
    font-size: 14px;
    line-height: 1.5;
}

/* Variáveis de cores (serão mescladas com theme.css depois) */
:root {
    --primary-color: #FF6C37;
    --primary-dark: #E55A2B;
    --primary-light: #FF8C5F;
    --sidebar-bg: #252C3A;
    --sidebar-text: #B0B7C3;
    --sidebar-active: #FF6C37;
    --main-bg: #0F1217;
    --card-bg: #1A1D24;
    --card-border: #2D3440;
    --text-primary: #FFFFFF;
    --text-secondary: #8C95A6;
    --text-muted: #5A6375;
    --success-color: #4CAF50;
    --danger-color: #F44336;
    --warning-color: #FF9800;
    --info-color: #2196F3;
    --border-radius: 4px;
    --shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
    --transition: all 0.2s ease;
}

/* Container principal */
.app-container {
    height: 100vh;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

/* Top Bar (mobile-first) */
.top-bar {
    background: var(--card-bg);
    border-bottom: 1px solid var(--card-border);
    padding: 12px 16px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-shrink: 0;
    height: 56px;
    z-index: 100;
}

.menu-toggle {
    background: none;
    border: none;
    color: var(--text-primary);
    font-size: 24px;
    cursor: pointer;
    padding: 8px;
    border-radius: var(--border-radius);
    transition: var(--transition);
}

.menu-toggle:hover {
    background: rgba(255, 255, 255, 0.1);
}

.hamburger {
    display: block;
    width: 20px;
    height: 2px;
    background: var(--text-primary);
    position: relative;
}

.hamburger::before,
.hamburger::after {
    content: '';
    position: absolute;
    width: 20px;
    height: 2px;
    background: var(--text-primary);
    left: 0;
}

.hamburger::before {
    top: -6px;
}

.hamburger::after {
    bottom: -6px;
}

.app-title {
    display: flex;
    align-items: center;
    gap: 10px;
    flex: 1;
    justify-content: center;
}

.logo-icon {
    color: var(--primary-color);
    font-weight: bold;
    font-size: 18px;
}

.app-title h1 {
    font-size: 16px;
    font-weight: 600;
    color: var(--text-primary);
}

.connection-status {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--success-color);
    display: inline-block;
    margin-left: 8px;
}

.connection-status.offline {
    background: var(--text-muted);
}

.action-btn {
    background: var(--primary-color);
    color: white;
    border: none;
    width: 36px;
    height: 36px;
    border-radius: var(--border-radius);
    cursor: pointer;
    font-size: 18px;
    transition: var(--transition);
}

.action-btn:hover {
    background: var(--primary-dark);
}

/* Layout principal */
.main-layout {
    display: flex;
    flex: 1;
    overflow: hidden;
    position: relative;
}

/* Sidebar */
.sidebar {
    position: fixed;
    top: 56px;
    left: 0;
    bottom: 0;
    width: 280px;
    background: var(--sidebar-bg);
    color: var(--sidebar-text);
    transform: translateX(-100%);
    transition: transform 0.3s ease;
    z-index: 200;
    display: flex;
    flex-direction: column;
    border-right: 1px solid var(--card-border);
}

.sidebar.open {
    transform: translateX(0);
}

.sidebar-header {
    padding: 16px;
    border-bottom: 1px solid var(--card-border);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.sidebar-header h2 {
    font-size: 16px;
    font-weight: 600;
    color: var(--text-primary);
}

.sidebar-close {
    background: none;
    border: none;
    color: var(--sidebar-text);
    font-size: 24px;
    cursor: pointer;
    padding: 4px;
    line-height: 1;
}

.sidebar-tabs {
    display: flex;
    padding: 8px;
    border-bottom: 1px solid var(--card-border);
    gap: 4px;
}

.tab-btn {
    flex: 1;
    background: none;
    border: none;
    color: var(--sidebar-text);
    padding: 10px 8px;
    border-radius: var(--border-radius);
    cursor: pointer;
    font-size: 13px;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
}

.tab-btn.active {
    background: rgba(255, 108, 55, 0.15);
    color: var(--primary-color);
}

.tab-btn:hover:not(.active) {
    background: rgba(255, 255, 255, 0.05);
}

.sidebar-content {
    flex: 1;
    overflow: auto;
    padding: 16px;
}

.file-explorer {
    min-height: 100%;
}

.empty-state {
    text-align: center;
    padding: 40px 20px;
    color: var(--text-muted);
}

.empty-state p {
    margin-bottom: 20px;
}

.btn-primary {
    background: var(--primary-color);
    color: white;
    border: none;
    padding: 12px 24px;
    border-radius: var(--border-radius);
    cursor: pointer;
    font-weight: 500;
    transition: var(--transition);
    width: 100%;
}

.btn-primary:hover {
    background: var(--primary-dark);
}

/* Overlay para mobile */
.sidebar-overlay {
    position: fixed;
    top: 56px;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: 150;
    display: none;
}

.sidebar-overlay.open {
    display: block;
}

/* Área principal */
.editor-area {
    flex: 1;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

/* Tabs */
.tabs-container {
    background: var(--card-bg);
    border-bottom: 1px solid var(--card-border);
    display: flex;
    align-items: center;
    flex-shrink: 0;
    min-height: 48px;
}

.tabs-scroll {
    flex: 1;
    overflow-x: auto;
    overflow-y: hidden;
    display: flex;
    scrollbar-width: none; /* Firefox */
    -ms-overflow-style: none; /* IE/Edge */
}

.tabs-scroll::-webkit-scrollbar {
    display: none; /* Chrome/Safari */
}

.tab {
    padding: 12px 20px;
    background: transparent;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    position: relative;
    white-space: nowrap;
    flex-shrink: 0;
    border-right: 1px solid var(--card-border);
    transition: var(--transition);
    font-size: 13px;
    display: flex;
    align-items: center;
    gap: 8px;
    min-width: 120px;
    max-width: 200px;
}

.tab.active {
    background: var(--main-bg);
    color: var(--text-primary);
}

.tab.active::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--primary-color);
}

.tab-close {
    background: none;
    border: none;
    color: inherit;
    opacity: 0.5;
    padding: 2px 4px;
    border-radius: 2px;
    cursor: pointer;
    font-size: 16px;
    line-height: 1;
}

.tab-close:hover {
    opacity: 1;
    background: rgba(255, 255, 255, 0.1);
}

.tabs-menu-btn {
    background: none;
    border: none;
    color: var(--text-secondary);
    padding: 12px 16px;
    cursor: pointer;
    font-size: 20px;
    line-height: 1;
    transition: var(--transition);
}

.tabs-menu-btn:hover {
    color: var(--text-primary);
}

/* Container do editor */
.editor-container {
    flex: 1;
    overflow: hidden;
    position: relative;
}

.editor-placeholder {
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--main-bg);
}

.welcome-screen {
    text-align: center;
    padding: 40px;
    max-width: 400px;
}

.welcome-icon {
    font-size: 60px;
    color: var(--primary-color);
    margin-bottom: 20px;
}

.welcome-screen h2 {
    font-size: 24px;
    margin-bottom: 12px;
    color: var(--text-primary);
}

.welcome-screen p {
    color: var(--text-secondary);
    margin-bottom: 30px;
}

.quick-actions {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    gap: 16px;
    margin-top: 30px;
}

.action-card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: var(--border-radius);
    padding: 20px 12px;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
}

.action-card:hover {
    border-color: var(--primary-color);
    transform: translateY(-2px);
}

.action-card .icon {
    font-size: 32px;
}

.action-card span {
    color: var(--text-primary);
    font-size: 13px;
}

/* Status bar */
.status-bar {
    background: var(--card-bg);
    border-top: 1px solid var(--card-border);
    padding: 8px 16px;
    display: flex;
    justify-content: space-between;
    color: var(--text-secondary);
    font-size: 12px;
    flex-shrink: 0;
}

.status-left,
.status-right {
    display: flex;
    gap: 20px;
}

/* Modal */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.7);
    z-index: 1000;
    display: none;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.modal.open {
    display: flex;
}

.modal-content {
    background: var(--card-bg);
    border-radius: var(--border-radius);
    width: 100%;
    max-width: 500px;
    max-height: 80vh;
    overflow: hidden;
    border: 1px solid var(--card-border);
    box-shadow: var(--shadow);
}

.modal-header {
    padding: 20px;
    border-bottom: 1px solid var(--card-border);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.modal-title {
    color: var(--text-primary);
    font-size: 18px;
}

.modal-close {
    background: none;
    border: none;
    color: var(--text-secondary);
    font-size: 24px;
    cursor: pointer;
    line-height: 1;
    padding: 4px;
}

.modal-body {
    padding: 20px;
    overflow-y: auto;
    max-height: 60vh;
}

/* Responsividade Desktop */
@media (min-width: 768px) {
    .top-bar {
        padding: 12px 20px;
        height: 64px;
    }
    
    .app-title h1 {
        font-size: 18px;
    }
    
    .sidebar {
        position: relative;
        top: 0;
        transform: translateX(0);
        width: 300px;
    }
    
    .sidebar-header {
        padding: 20px;
    }
    
    .sidebar-tabs {
        padding: 12px;
    }
    
    .sidebar-content {
        padding: 20px;
    }
    
    .menu-toggle {
        display: none;
    }
    
    .sidebar-close {
        display: none;
    }
    
    .sidebar-overlay {
        display: none !important;
    }
    
    .editor-area {
        margin-left: 0;
    }
    
    .tab {
        min-width: 150px;
        max-width: 250px;
        padding: 14px 24px;
    }
    
    .welcome-screen {
        max-width: 500px;
    }
}

@media (min-width: 1024px) {
    .sidebar {
        width: 320px;
    }
    
    .quick-actions {
        grid-template-columns: repeat(3, 1fr);
    }
}