/**
 * Gerador de Lorem Ipsum - Styles
 * Desenvolvido por B20 Conteúdo Digital
 * https://www.b20.com.br
 */

/* ===== CSS Variables ===== */
:root {
    /* Color Palette */
    --color-primary: #833AB4;
    --color-secondary: #FD1D1D;
    --color-accent-1: #F77737;
    --color-accent-2: #FCAF45;
    --color-accent-3: #FFDC80;
    
    /* Gradients */
    --gradient-primary: linear-gradient(135deg, #833AB4 0%, #FD1D1D 50%, #F77737 100%);
    --gradient-secondary: linear-gradient(135deg, #FCAF45 0%, #FFDC80 100%);
    
    /* Neutral Colors */
    --color-bg: #F8F9FA;
    --color-surface: #FFFFFF;
    --color-text: #212529;
    --color-text-secondary: #6C757D;
    --color-border: #DEE2E6;
    --color-shadow: rgba(0, 0, 0, 0.1);
    
    /* Status Colors */
    --color-success: #28A745;
    --color-error: #DC3545;
    --color-warning: #FFC107;
    --color-info: #17A2B8;
    
    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-xxl: 3rem;
    
    /* Typography */
    --font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-xxl: 1.5rem;
    --font-size-xxxl: 2rem;
    
    /* Border Radius */
    --radius-sm: 0.25rem;
    --radius-md: 0.5rem;
    --radius-lg: 1rem;
    --radius-full: 9999px;
    
    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 250ms ease;
    --transition-slow: 350ms ease;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
    
    /* Z-index */
    --z-dropdown: 1000;
    --z-sticky: 1020;
    --z-fixed: 1030;
    --z-modal: 1040;
    --z-toast: 1050;
}

/* ===== Reset & Base ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    line-height: 1.6;
    color: var(--color-text);
    background-color: var(--color-bg);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    padding-bottom: 70px;
}

/* ===== Typography ===== */
h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.2;
    margin-bottom: var(--spacing-md);
}

h1 { font-size: var(--font-size-xxxl); }
h2 { font-size: var(--font-size-xxl); }
h3 { font-size: var(--font-size-xl); }

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

a:hover {
    color: var(--color-secondary);
}

/* ===== Layout ===== */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

/* ===== Header ===== */
.app-header {
    background: var(--gradient-primary);
    color: white;
    padding: var(--spacing-xl) 0;
    box-shadow: var(--shadow-md);
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: var(--z-fixed);
}

.header-content {
    text-align: center;
}
.black-bar {
position: fixed;
bottom: 0;
left: 0;
right: 0;
height: 30px;
background-color: #000000;
z-index: 1001;
}
.app-title {
    font-size: var(--font-size-xxxl);
    margin-bottom: var(--spacing-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-md);
    flex-wrap: wrap;
}

.app-title i {
    font-size: 2.5rem;
}

.app-logo {
    height: 80px;
    width: auto;
    object-fit: contain;
    filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.2));
    transition: transform var(--transition-base);
}

.app-logo:hover {
    transform: scale(1.05);
}

.app-subtitle {
    font-size: var(--font-size-lg);
    opacity: 0.95;
    margin: 0;
}

/* ===== Main Content ===== */
.app-main {
    flex: 1;
    padding: var(--spacing-xl) 0;
    margin-top: 140px;
}

/* ===== Cards ===== */
.controls-card,
.output-card,
.history-card {
    background: var(--color-surface);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
    box-shadow: var(--shadow-md);
    transition: box-shadow var(--transition-base);
}

.controls-card:hover,
.output-card:hover,
.history-card:hover {
    box-shadow: var(--shadow-lg);
}

.section-title {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    color: var(--color-primary);
    margin-bottom: var(--spacing-lg);
    font-size: var(--font-size-xl);
}

.section-title i {
    font-size: 1.5rem;
}

/* ===== Forms ===== */
.generator-form {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.form-label {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-weight: 600;
    color: var(--color-text);
    font-size: var(--font-size-base);
}

.form-label i {
    color: var(--color-primary);
}

.quantity-value {
    margin-left: auto;
    background: var(--gradient-primary);
    color: white;
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: var(--radius-full);
    font-weight: 700;
    min-width: 40px;
    text-align: center;
}

.form-select,
.form-input {
    width: 100%;
    padding: var(--spacing-md);
    border: 2px solid var(--color-border);
    border-radius: var(--radius-md);
    font-size: var(--font-size-base);
    font-family: var(--font-family);
    transition: all var(--transition-base);
    background: var(--color-surface);
}

.form-select:focus,
.form-input:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(131, 58, 180, 0.1);
}

.form-select:hover,
.form-input:hover {
    border-color: var(--color-primary);
}

/* Range Input */
.form-range {
    width: 100%;
    height: 8px;
    border-radius: var(--radius-full);
    background: linear-gradient(to right, var(--color-primary) 0%, var(--color-primary) 15%, var(--color-border) 15%, var(--color-border) 100%);
    outline: none;
    -webkit-appearance: none;
    appearance: none;
}

.form-range::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 24px;
    height: 24px;
    border-radius: 50%;
    background: var(--gradient-primary);
    cursor: pointer;
    box-shadow: var(--shadow-md);
    transition: transform var(--transition-fast);
}

.form-range::-webkit-slider-thumb:hover {
    transform: scale(1.2);
}

.form-range::-moz-range-thumb {
    width: 24px;
    height: 24px;
    border-radius: 50%;
    background: var(--gradient-primary);
    cursor: pointer;
    border: none;
    box-shadow: var(--shadow-md);
    transition: transform var(--transition-fast);
}

.form-range::-moz-range-thumb:hover {
    transform: scale(1.2);
}

.range-labels {
    display: flex;
    justify-content: space-between;
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    margin-top: var(--spacing-xs);
}

/* Checkbox */
.form-checkbox {
    margin: var(--spacing-sm) 0;
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    cursor: pointer;
    user-select: none;
}

.checkbox-label input[type="checkbox"] {
    position: absolute;
    opacity: 0;
    cursor: pointer;
}

.checkbox-custom {
    position: relative;
    width: 24px;
    height: 24px;
    border: 2px solid var(--color-border);
    border-radius: var(--radius-sm);
    transition: all var(--transition-base);
    flex-shrink: 0;
}

.checkbox-label input[type="checkbox"]:checked ~ .checkbox-custom {
    background: var(--gradient-primary);
    border-color: var(--color-primary);
}

.checkbox-label input[type="checkbox"]:checked ~ .checkbox-custom::after {
    content: '\f00c';
    font-family: 'Font Awesome 6 Free';
    font-weight: 900;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: white;
    font-size: 12px;
}

.checkbox-text {
    font-size: var(--font-size-base);
    color: var(--color-text);
}

/* ===== Buttons ===== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md) var(--spacing-xl);
    border: none;
    border-radius: var(--radius-md);
    font-size: var(--font-size-base);
    font-weight: 600;
    font-family: var(--font-family);
    cursor: pointer;
    transition: all var(--transition-base);
    text-decoration: none;
    min-height: 44px;
    touch-action: manipulation;
}

.btn:focus {
    outline: 3px solid rgba(131, 58, 180, 0.3);
    outline-offset: 2px;
}

.btn-primary {
    background: var(--gradient-primary);
    color: white;
    box-shadow: var(--shadow-md);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-primary:active {
    transform: translateY(0);
}

.btn-secondary {
    background: var(--color-surface);
    color: var(--color-text);
    border: 2px solid var(--color-border);
}

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

.btn-generate {
    width: 100%;
    font-size: var(--font-size-lg);
    padding: var(--spacing-lg) var(--spacing-xl);
}

.btn-small {
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: var(--font-size-sm);
    min-height: 36px;
}

/* ===== Output Section ===== */
.output-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

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

.output-content {
    background: var(--color-bg);
    border: 2px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: var(--spacing-xl);
    min-height: 200px;
    max-height: 500px;
    overflow-y: auto;
    font-size: var(--font-size-base);
    line-height: 1.8;
    white-space: pre-wrap;
    word-wrap: break-word;
}

.output-content p {
    margin-bottom: var(--spacing-md);
}

.output-content p:last-child {
    margin-bottom: 0;
}

.output-placeholder {
    color: var(--color-text-secondary);
    text-align: center;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    min-height: 200px;
}

.output-placeholder i {
    font-size: var(--font-size-xl);
}

.output-content ul {
    list-style: none;
    padding-left: 0;
}

.output-content ul li {
    padding-left: var(--spacing-xl);
    position: relative;
    margin-bottom: var(--spacing-sm);
}

.output-content ul li::before {
    content: '•';
    position: absolute;
    left: var(--spacing-md);
    color: var(--color-primary);
    font-weight: bold;
    font-size: var(--font-size-lg);
}

.output-stats {
    display: flex;
    justify-content: space-around;
    flex-wrap: wrap;
    gap: var(--spacing-md);
    margin-top: var(--spacing-lg);
    padding-top: var(--spacing-lg);
    border-top: 2px solid var(--color-border);
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
}

.output-stats span {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.output-stats i {
    color: var(--color-primary);
}

.output-stats strong {
    color: var(--color-text);
    font-size: var(--font-size-lg);
}

/* ===== History Section ===== */
.history-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.history-item {
    background: var(--color-bg);
    border: 2px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    cursor: pointer;
    transition: all var(--transition-base);
}

.history-item:hover {
    border-color: var(--color-primary);
    transform: translateX(4px);
}

.history-item-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-sm);
}

.history-item-meta {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
}

.history-item-preview {
    font-size: var(--font-size-sm);
    color: var(--color-text);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

/* ===== FAQ Section ===== */
.faq-section {
    margin-top: var(--spacing-xxl);
    padding: var(--spacing-xl);
    background: var(--color-surface);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
}

.faq-container {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.faq-item {
    border: 2px solid var(--color-border);
    border-radius: var(--radius-md);
    overflow: hidden;
    transition: border-color var(--transition-base);
}

.faq-item:hover {
    border-color: var(--color-primary);
}

.faq-question {
    width: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-lg);
    background: var(--color-surface);
    border: none;
    font-size: var(--font-size-base);
    font-weight: 600;
    font-family: var(--font-family);
    color: var(--color-text);
    cursor: pointer;
    text-align: left;
    transition: all var(--transition-base);
    min-height: 44px;
}

.faq-question:hover {
    background: var(--color-bg);
}

.faq-question[aria-expanded="true"] {
    background: var(--color-bg);
    color: var(--color-primary);
}

.faq-icon {
    font-size: var(--font-size-xl);
    font-weight: 300;
    color: var(--color-primary);
    transition: transform var(--transition-base);
    flex-shrink: 0;
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.faq-question[aria-expanded="true"] .faq-icon {
    transform: rotate(45deg);
}

.faq-answer {
    padding: 0 var(--spacing-lg) var(--spacing-lg);
    background: var(--color-bg);
    animation: fadeIn var(--transition-base);
}

.faq-answer p {
    margin: 0;
    line-height: 1.8;
    color: var(--color-text-secondary);
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ===== Footer ===== */
.app-footer {
    background: var(--color-text);
    color: white;
    padding: var(--spacing-xl) 0;
    margin-top: auto;
    margin-bottom: 60px;
}

.footer-content {
    text-align: center;
}

.footer-text {
    font-size: var(--font-size-base);
    margin-bottom: var(--spacing-sm);
}

.b20-link {
    color: var(--color-accent-3);
    font-weight: 700;
    text-decoration: none;
    transition: all var(--transition-base);
    display: inline-block;
}

.b20-link:hover {
    color: white;
    transform: scale(1.05);
    text-decoration: underline;
}

.footer-link {
    margin-bottom: var(--spacing-sm);
}

.footer-link a {
    color: var(--color-accent-2);
    text-decoration: none;
    transition: color var(--transition-fast);
}

.footer-link a:hover {
    color: white;
}

.footer-copyright {
    font-size: var(--font-size-sm);
    color: rgba(255, 255, 255, 0.7);
    margin: 0;
}

/* ===== Bottom Navigation ===== */
.bottom-nav {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: var(--color-surface);
    border-top: 2px solid var(--color-border);
    display: flex;
    justify-content: space-around;
    padding: var(--spacing-sm) 0;
    box-shadow: 0 -2px 10px var(--color-shadow);
    z-index: var(--z-fixed);
    margin-bottom: 80px;
}

.nav-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-sm) var(--spacing-md);
    color: var(--color-text-secondary);
    text-decoration: none;
    transition: all var(--transition-base);
    min-width: 70px;
    min-height: 44px;
    border-radius: var(--radius-md);
}

.nav-item i {
    font-size: var(--font-size-xl);
}

.nav-item span {
    font-size: var(--font-size-xs);
    font-weight: 600;
}

.nav-item:hover,
.nav-item.active {
    color: var(--color-primary);
    background: rgba(131, 58, 180, 0.1);
}

/* ===== Toast Notification ===== */
.toast {
    position: fixed;
    top: 160px;
    left: 50%;
    transform: translateX(-50%) translateY(-150px);
    background: var(--color-text);
    color: white;
    padding: var(--spacing-md) var(--spacing-xl);
    border-radius: var(--radius-full);
    box-shadow: var(--shadow-xl);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    z-index: var(--z-toast);
    transition: transform var(--transition-base), opacity var(--transition-base);
    max-width: 90%;
    opacity: 0;
    pointer-events: none;
}

.toast.show {
    transform: translateX(-50%) translateY(0);
    opacity: 1;
    pointer-events: auto;
}

.toast-icon {
    font-size: var(--font-size-lg);
}

.toast.success .toast-icon {
    color: var(--color-success);
}

.toast.error .toast-icon {
    color: var(--color-error);
}

.toast-message {
    font-size: var(--font-size-base);
    font-weight: 500;
}

/* ===== Responsive Design ===== */
@media (max-width: 767px) {
    .app-title {
        font-size: 1.5rem;
    }
    
    .app-logo {
        height: 55px;
    }
    
    .app-subtitle {
        font-size: var(--font-size-base);
    }
}

@media (min-width: 768px) {
    body {
        padding-bottom: 0;
    }
    
    .bottom-nav {
        display: none;
    }
    
    .app-title {
        font-size: 3rem;
    }
    
    .app-title i {
        font-size: 3rem;
    }
    
    .app-logo {
        height: 90px;
    }
    
    .generator-form {
        display: grid;
        grid-template-columns: repeat(2, 1fr);
        gap: var(--spacing-lg);
    }
    
    .form-group:last-of-type,
    .btn-generate {
        grid-column: 1 / -1;
    }
    
    .output-stats {
        justify-content: flex-start;
        gap: var(--spacing-xl);
    }
    
    .toast {
        top: 160px;
    }
}

@media (min-width: 1024px) {
    .container {
        padding: 0 var(--spacing-xl);
    }
    
    .generator-section {
        display: grid;
        grid-template-columns: 1fr 1.5fr;
        gap: var(--spacing-xl);
        align-items: start;
    }
    
    .controls-card {
        position: sticky;
        top: var(--spacing-xl);
    }
    
    .output-card,
    .history-card {
        grid-column: 2;
    }
}

/* ===== Accessibility ===== */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border-width: 0;
}

*:focus-visible {
    outline: 3px solid var(--color-primary);
    outline-offset: 2px;
}

/* ===== Print Styles ===== */
@media print {
    .app-header,
    .controls-card,
    .bottom-nav,
    .app-footer,
    .output-actions,
    .history-card,
    .faq-section {
        display: none;
    }
    
    .output-card {
        box-shadow: none;
        border: 1px solid var(--color-border);
    }
}

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

.controls-card,
.output-card,
.history-card,
.faq-section {
    animation: slideUp var(--transition-slow) ease-out;
}

/* ===== Scrollbar Styling ===== */
.output-content::-webkit-scrollbar {
    width: 8px;
}

.output-content::-webkit-scrollbar-track {
    background: var(--color-border);
    border-radius: var(--radius-full);
}

.output-content::-webkit-scrollbar-thumb {
    background: var(--color-primary);
    border-radius: var(--radius-full);
}

.output-content::-webkit-scrollbar-thumb:hover {
    background: var(--color-secondary);
}