:root {
    /* Cores Base */
    --color-primary: #6f59b4;
    --color-primary-darker: #6f59b4;
    --color-primary-lighter: #e6f0ff;
    --color-secondary: #ff4081;
    --color-secondary-darker: #c60055;
    --color-secondary-lighter: #ffe6f0;
    
    /* Tons Neutros */
    --color-background: #f5f8fa;
    --color-surface: #ffffff;
    --color-surface-alt: #f3f0ff;
    --color-border: #e2e8f0;
    --color-border-dark: #cbd5e1;
    
    /* Texto */
    --color-text-primary: #1a202c;
    --color-text-secondary: #4a5568;
    --color-text-tertiary: #718096;
    --color-text-inverse: #ffffff;
    
    /* Estados */
    --color-success: #22c55e;
    --color-warning: #f59e0b;
    --color-error: #ef4444;
    --color-info: #3b82f6;
    
    /* Sombras */
    --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);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    
    /* Tipografia */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-md: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 1.875rem;
    --font-size-4xl: 2.25rem;
    
    /* Espaçamento */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    
    /* Arredondamento */
    --radius-sm: 0.25rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-full: 9999px;
    
    /* Layout */
    --sidebar-width: 380px;
    --header-height: 60px;
    --chat-height: 600px;
    --chat-collapsed-height: 48px;
    
    /* Transições */
    --transition-fast: 150ms ease;
    --transition-normal: 250ms ease;
    --transition-slow: 350ms ease;
    
    /* Z-index */
    --z-header: 10;
    --z-sidebar: 5;
    --z-modal: 100;
    --z-dropdown: 50;

    /* Gradientes */
    --gradient-primary: linear-gradient(135deg, #6f59b4 0%, var(--color-primary-darker) 100%);
    --gradient-secondary: linear-gradient(135deg, var(--color-secondary) 0%, var(--color-secondary-darker) 100%);
    --gradient-hero: linear-gradient(135deg, #6f59b4 0%, var(--color-primary-darker) 100%);
    
    /* Gradientes do Hero */
    --hero-gradient-from: #1a472a;
    --hero-gradient-to: #0d47a1;

    /* Cores do Hero */
    --hero-bg-color: #1a472a;
    --hero-gradient-angle: 135deg;
    --hero-gradient-start: var(--hero-bg-color);
    --hero-gradient-end: #0d47a1;
}

/* Reset e Estilos Base */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html, body {
    height: 100%;
    font-family: var(--font-family);
    font-size: 16px;
    line-height: 1.5;
    color: var(--color-text-primary);
    background-color: var(--color-background);
}

h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.25;
    margin-bottom: 0.5em;
}

h1 { font-size: var(--font-size-3xl); }
h2 { font-size: var(--font-size-2xl); }
h3 { font-size: var(--font-size-xl); }
h4 { font-size: var(--font-size-lg); }
h5 { font-size: var(--font-size-md); }
h6 { font-size: var(--font-size-sm); }

p {
    margin-bottom: 1em;
}

ul, ol {
    margin-left: 1.5em;
    margin-bottom: 1em;
}

a {
    color: #6f59b4;
    text-decoration: none;
    transition: color var(--transition-fast);
}

a:hover {
    color: #6f59b4;
    text-decoration: underline;
}

button, input, select, textarea {
    font-family: inherit;
    font-size: inherit;
    line-height: inherit;
}

button:focus, input:focus, select:focus, textarea:focus {
    outline: 2px solid var(--color-primary-lighter);
    outline-offset: 2px;
}

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

.app-header {
    height: var(--header-height);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 var(--spacing-lg);
    background-color: var(--color-surface);
    border-bottom: 1px solid var(--color-border);
    z-index: var(--z-header);
}

.app-content {
    display: flex;
    flex: 1;
    overflow: hidden;
    min-height: 0; /* Importante para que o flex-grow funcione com scroll */
}

/* Logo */
.logo {
    display: flex;
    align-items: center;
    font-weight: 700;
    color: #6f59b4;
    text-decoration: none;
    font-size: 1.25rem;
}
.logo-icon {
    color: white;
    width: 36px;
    height: 36px;
    border-radius: 8px;
    display: flex
;
    align-items: center;
    justify-content: center;
    margin-right: 0.5rem;
    font-weight: bold;
    font-size: 0.875rem;
    overflow: hidden;
}


.logo-container {
    display: flex;
    flex-direction: column;
}

.logo-text {
    font-size: var(--font-size-lg);
    font-weight: 700;
    margin: 0;
    line-height: 1.1;
}

.logo-slogan {
    font-size: var(--font-size-xs);
    color: var(--color-text-tertiary);
    font-weight: 400;
    font-style: italic;
    margin-top: 2px;
}

/* Botões */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-md);
    font-weight: 500;
    border: none;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.btn-sm {
    padding: var(--spacing-xs) var(--spacing-sm);
    font-size: var(--font-size-sm);
}

.btn-icon {
    width: 36px;
    height: 36px;
    padding: 0;
    border-radius: var(--radius-md);
}

.btn-primary {
    background-color: #6f59b4;
    color: var(--color-text-inverse);
}

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

.btn-secondary {
    background-color: var(--color-secondary);
    color: var(--color-text-inverse);
}

.btn-secondary:hover {
    background-color: var(--color-secondary-darker);
}

.btn-outline {
    background-color: transparent;
    color: var(--color-text-primary);
    border: 1px solid var(--color-border-dark);
}

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

.btn-icon-only {
    padding: var(--spacing-xs);
}

.btn-gradient-primary {
    background: var(--gradient-primary);
    color: var(--color-text-inverse);
    border: none;
}

.btn-gradient-primary:hover {
    background: linear-gradient(135deg, var(--color-primary-darker) 0%, #6f59b4 100%);
}

.btn-gradient-secondary {
    background: var(--gradient-secondary);
    color: var(--color-text-inverse);
    border: none;
}

.btn-gradient-secondary:hover {
    background: linear-gradient(135deg, var(--color-secondary-darker) 0%, var(--color-secondary) 100%);
}

.header-actions {
    display: flex;
    gap: var(--spacing-sm);
}

.header-actions.hidden-actions {
    display: none;
}

/* Utilitários */
.hidden {
    display: none !important;
}

/* Modais */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    z-index: var(--z-modal);
    align-items: center;
    justify-content: center;
}

.modal.active {
    display: flex;
}

.fullscreen-modal .modal-content {
    width: 95%;
    height: 95%;
    max-width: 1400px;
}

.modal-content {
    background-color: var(--color-surface);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
    width: 90%;
    max-width: 600px;
    max-height: 90vh;
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

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

.modal-body {
    padding: var(--spacing-lg);
    overflow-y: auto;
}

.close-modal {
    background: transparent;
    border: none;
    font-size: var(--font-size-xl);
    cursor: pointer;
    color: var(--color-text-tertiary);
    transition: color var(--transition-fast);
}

.close-modal:hover {
    color: var(--color-error);
}

/* Estado vazio */
.empty-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: var(--spacing-2xl);
    color: var(--color-text-tertiary);
}

.empty-icon {
    font-size: 3rem;
    margin-bottom: var(--spacing-lg);
}

/* Inputs e Campos de Formulário */
.input-group {
    margin-bottom: var(--spacing-md);
}

label {
    display: block;
    font-size: var(--font-size-sm);
    font-weight: 500;
    margin-bottom: var(--spacing-xs);
    color: var(--color-text-secondary);
}

input[type="text"],
input[type="number"],
input[type="email"],
input[type="url"],
input[type="password"],
textarea,
select {
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-md);
    border: 1px solid var(--color-border-dark);
    border-radius: var(--radius-md);
    background-color: var(--color-surface);
    transition: border-color var(--transition-fast);
}

input[type="text"]:focus,
input[type="number"]:focus,
input[type="email"]:focus,
input[type="url"]:focus,
input[type="password"]:focus,
textarea:focus,
select:focus {
    border-color: #6f59b4;
}

input[type="color"] {
    width: 40px;
    height: 40px;
    border: 1px solid var(--color-border-dark);
    border-radius: var(--radius-sm);
    padding: 2px;
    cursor: pointer;
}

textarea {
    min-height: 100px;
    resize: vertical;
}

/* Dropdown */
.dropdown {
    position: relative;
    display: inline-block;
}

.dropdown-menu {
    display: none;
    position: absolute;
    top: 100%;
    right: 0;
    min-width: 200px;
    background-color: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    z-index: var(--z-dropdown);
    margin-top: 0.5rem;
}

.dropdown-menu.show {
    display: block;
    animation: fadeIn var(--transition-fast);
}

.dropdown-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-md);
    border: none;
    background: none;
    color: var(--color-text-primary);
    font-size: var(--font-size-sm);
    text-align: left;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.dropdown-item:hover {
    background-color: var(--color-background);
}

.dropdown-item i {
    width: 16px;
    color: var(--color-text-tertiary);
}

/* Responsividade */
@media (max-width: 1200px) {
    :root {
        --sidebar-width: 320px;
    }
}

@media (max-width: 768px) {
    .app-content {
        flex-direction: column;
    }
    
    :root {
        --sidebar-width: 100%;
        --header-height: 50px;
    }
    
    .app-header {
        padding: 0 var(--spacing-md);
    }
    
    .logo-text {
        font-size: var(--font-size-md);
    }
    
    .logo-slogan {
        font-size: calc(var(--font-size-xs) - 1px);
    }
    
    .header-actions {
        gap: var(--spacing-xs);
    }
    
    .btn {
        padding: var(--spacing-xs) var(--spacing-sm);
        font-size: var(--font-size-sm);
    }
    
    .modal-content {
        width: 95%;
    }
    
    .app-content {
        flex-direction: column;
        height: 100%;
    }
    
    .sidebar {
        width: 100%;
        height: 50vh;
        min-height: 300px;
        overflow-y: auto;
    }
    
    .preview-container {
        height: 50vh;
        min-height: 300px;
        position: relative;
        overflow: hidden;
        -webkit-overflow-scrolling: touch;
    }

    .preview-frame {
        height: 100%;
        overflow-y: auto !important;
        -webkit-overflow-scrolling: touch;
        touch-action: pan-y pinch-zoom;
        overscroll-behavior-y: none;
    }

    .landing-page {
        min-height: 100%;
        height: auto !important;
        width: 100%;
        overflow-y: auto !important;
        -webkit-overflow-scrolling: touch;
        overscroll-behavior-y: none;
    }

    /* Removendo qualquer impedimento de scroll */
    .preview-frame,
    .landing-page,
    .preview-container {
        touch-action: pan-y pinch-zoom;
        -ms-touch-action: pan-y pinch-zoom;
        pointer-events: auto;
    }
}

@media screen and (max-width: 768px) and (orientation: portrait) {
    .orientation-warning {
        display: block;
    }
    
    .preview-container {
        position: relative;
    }
    
    .preview-frame {
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
    }
    
    .landing-page {
        min-width: 100%;
        padding: 0 var(--spacing-md);
    }
    
    .sidebar, .preview-container {
        height: calc(50vh - var(--header-height) / 2);
    }
}

@media screen and (max-width: 768px) and (orientation: landscape) {
    .app-content {
        flex-direction: row;
        height: calc(100vh - var(--header-height));
        overflow: hidden;
    }
    
    .sidebar {
        width: 320px;
        height: 100%;
        overflow-y: auto;
        -webkit-overflow-scrolling: touch;
    }
    
    .preview-container {
        flex: 1;
        height: 100%;
        overflow: hidden;
    }

    .preview-frame {
        height: 100%;
        overflow-y: auto !important;
        -webkit-overflow-scrolling: touch;
    }

    .preview-frame.mobile .landing-page {
        width: 100%;
        min-height: 100%;
        margin: 0;
        padding: 0 var(--spacing-sm);
        border: none;
        border-radius: 0;
        box-shadow: none;
        overflow-y: auto !important;
    }

    .landing-page {
        min-width: 320px;
        width: 100%;
        height: auto;
        min-height: 100%;
        overflow-y: auto !important;
        -webkit-overflow-scrolling: touch;
        transform: translateZ(0);
        will-change: scroll-position;
    }

    /* Scrollbar customizada para mobile landscape */
    .landing-page::-webkit-scrollbar {
        width: 14px;
        height: 14px;
    }

    .landing-page::-webkit-scrollbar-track {
        background: var(--color-background);
        border-radius: 7px;
    }

    .landing-page::-webkit-scrollbar-thumb {
        background: var(--color-primary-lighter);
        border-radius: 7px;
        border: 2px solid var(--color-background);
    }

    .landing-page::-webkit-scrollbar-thumb:hover {
        background: var(--color-primary);
    }
}

/* Animações */
@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes slideUp {
    from { transform: translateY(20px); opacity: 0; }
    to { transform: translateY(0); opacity: 1; }
}

.fade-in {
    animation: fadeIn var(--transition-normal);
}

.slide-up {
    animation: slideUp var(--transition-normal);
}

/* Success Animation */
.success-animation {
    text-align: center;
    margin: var(--spacing-xl) 0;
}

.success-animation i {
    font-size: 4rem;
    color: var(--color-success);
    animation: pulse 1s infinite alternate;
}

@keyframes pulse {
    from { transform: scale(1); }
    to { transform: scale(1.1); }
}

/* Download Modal */
.support-options {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: var(--spacing-md);
    margin: var(--spacing-lg) 0;
}

.support-option {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    padding: var(--spacing-lg);
    border-radius: var(--radius-md);
    background-color: var(--color-surface-alt);
    transition: transform var(--transition-fast), box-shadow var(--transition-fast);
    text-decoration: none;
    color: var(--color-text-primary);
}

.support-option:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
    text-decoration: none;
}

.support-option i {
    font-size: 2rem;
    margin-bottom: var(--spacing-md);
    color: #6f59b4;
}

.support-option h5 {
    margin-bottom: var(--spacing-xs);
    color: var(--color-text-primary);
}

.support-option p {
    color: var(--color-text-tertiary);
    font-size: var(--font-size-sm);
    margin-bottom: 0;
}

.download-actions {
    display: flex;
    justify-content: center;
    margin-top: var(--spacing-lg);
}

/* Estilos específicos para o tema claro */
.app-header button#btnDownload {
    color: var(--color-text-inverse);
    background-color: #6f59b4;
}
.app-header .btn-outline {
    background-color: transparent;
    color: #6f59b4;
    border: 1px solid var(--color-border-dark);
}
.app-header .tab-btn.active {
    color: #6f59b4;
    border-bottom-color: #6f59b4;
}
.app-header .device-btn.active {
    color: var(--color-text-inverse);
    background-color: #6f59b4;
}
a:hover {
    color: #6f59b4;
}

/* Hero Section */
.template-ebook .hero-section {
    background: linear-gradient(
        var(--hero-gradient-angle),
        var(--hero-gradient-from) 0%,
        var(--hero-gradient-to) 100%
    );
    color: var(--color-text-inverse);
    position: relative;
    overflow: hidden;
}

/* Removendo classes duplicadas e mantendo apenas o necessário */
.hero-section > * {
    position: relative;
    z-index: 2;
}

/* Orientação de Tela */
.orientation-warning {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background-color: var(--color-warning);
    color: var(--color-text-inverse);
    padding: var(--spacing-md);
    text-align: center;
    z-index: var(--z-modal);
    font-weight: 500;
    animation: slideDown 0.3s ease;
}

@keyframes slideDown {
    from { transform: translateY(-100%); }
    to { transform: translateY(0); }
}