/**
 * LinkZap - Gerador de Links WhatsApp
 * Desenvolvido por B20 Conteúdo Digital
 * https://www.b20.com.br
 */

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

:root {
    /* WhatsApp Colors */
    --primary-color: #25D366;
    --secondary-color: #128C7E;
    --accent-color: #075E54;
    --success-color: #25D366;
    --error-color: #dc3545;
    --warning-color: #ffc107;
    
    /* Light Theme Colors (Default) */
    --bg-primary: #fbfbfb;
    --bg-secondary: #f4f4f5;
    --bg-tertiary: #e9ecef;
    --surface-color: rgba(255, 255, 255, 0.85);
    --surface-hover: rgba(255, 255, 255, 0.95);
    
    /* Text Colors */
    --text-primary: #212529;
    --text-secondary: #6c757d;
    --text-muted: #adb5bd;
    
    /* Border Colors */
    --border-color: rgba(0, 0, 0, 0.1);
    --border-hover: rgba(0, 0, 0, 0.2);
    
    /* Spacing */
    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;
    
    /* Border Radius */
    --radius-sm: 8px;
    --radius-md: 16px;
    --radius-lg: 24px;
    --radius-xl: 32px;
    
    /* Shadows (Premium soft shadows) */
    --shadow-sm: 0 4px 6px -1px rgba(0, 0, 0, 0.05), 0 2px 4px -1px rgba(0, 0, 0, 0.03);
    --shadow-md: 0 10px 15px -3px rgba(0, 0, 0, 0.08), 0 4px 6px -2px rgba(0, 0, 0, 0.04);
    --shadow-lg: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    --shadow-glow: 0 0 20px rgba(37, 211, 102, 0.3);
    
    /* Transitions */
    --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-normal: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 0.5s cubic-bezier(0.4, 0, 0.2, 1);
    
    /* Typography */
    --font-heading: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 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-2xl: 1.5rem;
    --font-size-3xl: 2rem;
}

body[data-theme="dark"] {
    --bg-primary: #0a0a0b;
    --bg-secondary: #131315;
    --bg-tertiary: #1c1c1e;
    --surface-color: rgba(25, 25, 28, 0.7);
    --surface-hover: rgba(35, 35, 40, 0.8);
    --text-primary: #ffffff;
    --text-secondary: #a1a1aa;
    --text-muted: #71717a;
    --border-color: rgba(255, 255, 255, 0.08);
    --border-hover: rgba(255, 255, 255, 0.15);
    --shadow-sm: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-md: 0 10px 15px -3px rgba(0, 0, 0, 0.2), 0 4px 6px -2px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 20px 25px -5px rgba(0, 0, 0, 0.3), 0 10px 10px -5px rgba(0, 0, 0, 0.2);
}

/* Base Styles */
html {
    font-size: clamp(14px, 2.5vw, 16px);
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    background-color: var(--bg-primary);
    background-image: 
        radial-gradient(circle at 10% 20%, rgba(37, 211, 102, 0.06) 0%, transparent 40%),
        radial-gradient(circle at 90% 80%, rgba(18, 140, 126, 0.06) 0%, transparent 40%);
    background-attachment: fixed;
    color: var(--text-primary);
    line-height: 1.6;
    padding-top: 70px;
    padding-bottom: 120px;
    min-height: 100vh;
    overflow-x: hidden;
    transition: background-color var(--transition-normal), color var(--transition-normal);
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: var(--spacing-sm);
    letter-spacing: -0.02em;
}

h1 { font-size: var(--font-size-3xl); font-weight: 800; }
h2 { font-size: var(--font-size-2xl); }
h3 { font-size: var(--font-size-xl); }
h4 { font-size: var(--font-size-lg); }

p {
    margin-bottom: var(--spacing-md);
    color: var(--text-secondary);
}

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

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

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

.main-content {
    min-height: calc(100vh - 140px);
    padding: var(--spacing-lg) 0;
}

/* Header */
.app-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: 70px;
    background: var(--surface-color);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-color);
    z-index: 1000;
    display: flex;
    align-items: center;
    padding: 0 var(--spacing-md);
}

.header-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
}

.header-logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    color: var(--primary-color);
}

.header-logo i {
    font-size: 1.5rem;
}

.header-logo h1 {
    font-size: var(--font-size-xl);
    font-weight: 800;
    font-family: var(--font-heading);
    margin: 0;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    background-clip: text;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    letter-spacing: -0.03em;
}

.desktop-nav {
    display: none;
}

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

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    border: none;
    border-radius: var(--radius-md);
    font-family: inherit;
    font-size: var(--font-size-sm);
    font-weight: 500;
    text-decoration: none;
    cursor: pointer;
    transition: var(--transition-fast);
    min-height: 44px;
    white-space: nowrap;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    box-shadow: var(--shadow-glow);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-xl);
    font-family: var(--font-heading);
    font-weight: 600;
}

.btn-primary:hover {
    background: linear-gradient(135deg, #2ae06f, #15a090);
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(37, 211, 102, 0.4);
}

.btn-secondary {
    background: var(--surface-color);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    font-family: var(--font-heading);
    font-weight: 600;
}

.btn-secondary:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(37, 211, 102, 0.1);
}

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

.btn-icon {
    width: 44px;
    height: 44px;
    padding: 0;
    border-radius: 50%;
    background: var(--surface-hover);
    color: var(--text-secondary);
    border: 1px solid var(--border-color);
}

.btn-icon:hover {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
}

.btn-generate {
    width: 100%;
    padding: var(--spacing-md);
    font-size: var(--font-size-lg);
    font-family: var(--font-heading);
    font-weight: 700;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-glow);
    border: 1px solid rgba(255, 255, 255, 0.2);
    letter-spacing: -0.01em;
    position: relative;
    overflow: hidden;
}

.btn-generate::after {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: linear-gradient(to right, rgba(255,255,255,0) 0%, rgba(255,255,255,0.2) 50%, rgba(255,255,255,0) 100%);
    transform: rotate(30deg) translate(-50%, 0);
    animation: buttonShine 4s infinite;
}

@keyframes buttonShine {
    0% { transform: rotate(30deg) translate(-150%, 0); }
    15% { transform: rotate(30deg) translate(150%, 0); }
    100% { transform: rotate(30deg) translate(150%, 0); }
}

.btn-generate:hover {
    transform: translateY(-2px) scale(1.02);
    box-shadow: 0 12px 30px rgba(37, 211, 102, 0.4);
}

/* Cards */
.result-placeholder {
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    background: var(--surface-color);
    backdrop-filter: blur(24px);
    -webkit-backdrop-filter: blur(24px);
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
    margin-bottom: var(--spacing-lg);
    border: 2px dashed rgba(37, 211, 102, 0.3);
    min-height: 400px;
    align-self: stretch;
}

@media (max-width: 1023px) {
    .result-placeholder {
        display: none !important;
    }
}

.placeholder-content {
    color: var(--text-muted);
    animation: pulsePlaceholder 3s infinite ease-in-out;
}

.placeholder-icon {
    font-size: 4rem;
    margin-bottom: var(--spacing-md);
    opacity: 0.8;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    background-clip: text;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

@keyframes pulsePlaceholder {
    0%, 100% { opacity: 0.7; transform: scale(1); }
    50% { opacity: 1; transform: scale(1.02); }
}

.generator-card,
.result-card {
    background: var(--surface-color);
    backdrop-filter: blur(24px);
    -webkit-backdrop-filter: blur(24px);
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
    margin-bottom: var(--spacing-lg);
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-lg);
    position: relative;
}

.card-header {
    text-align: center;
    margin-bottom: var(--spacing-xl);
}

.card-header h2,
.card-header h3 {
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
}

.card-header p {
    color: var(--text-secondary);
    margin: 0;
}

/* Forms */
.form-group {
    margin-bottom: var(--spacing-lg);
}

.form-group label {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--spacing-sm);
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
}

.form-group label span:first-child {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.shortcut-hint {
    font-size: 0.65rem;
    color: var(--text-muted);
    font-family: monospace;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    padding: 2px 6px;
    border-radius: 4px;
    opacity: 0.3;
    transition: var(--transition-fast);
}

.form-group:hover .shortcut-hint,
.form-group:focus-within .shortcut-hint {
    opacity: 1;
    color: var(--primary-color);
    border-color: rgba(37, 211, 102, 0.4);
}

.input-prefix-wrapper {
    position: relative;
    display: flex;
    align-items: center;
}

.input-help {
    font-size: 0.8rem;
    color: var(--text-muted);
    display: block;
    line-height: 1.4;
}

.form-input,
.form-textarea,
.form-select {
    width: 100%;
    padding: var(--spacing-md) calc(var(--spacing-md) * 1.2);
    background: var(--bg-secondary);
    border: 2px solid transparent;
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-family: inherit;
    font-size: var(--font-size-base);
    transition: var(--transition-fast);
    box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.02);
}

.form-input::placeholder,
.form-textarea::placeholder {
    color: var(--text-muted);
}

.form-input:focus,
.form-textarea:focus,
.form-select:focus {
    outline: none;
    border-color: var(--primary-color);
    background: var(--surface-hover);
    box-shadow: 0 0 0 4px rgba(37, 211, 102, 0.15);
}

.form-textarea {
    resize: vertical;
    min-height: 80px;
}

.input-error {
    color: var(--error-color);
    font-size: var(--font-size-sm);
    margin-top: var(--spacing-xs);
    min-height: 20px;
}

.char-counter {
    text-align: right;
    font-size: var(--font-size-xs);
    color: var(--text-muted);
    margin-top: var(--spacing-xs);
}

/* Quick Templates */
.quick-templates {
    margin-bottom: var(--spacing-lg);
}

.quick-templates h4 {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    color: var(--text-primary);
    margin-bottom: var(--spacing-md);
    font-size: var(--font-size-base);
}

.templates-grid {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
}

.template-chip {
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    cursor: pointer;
    transition: var(--transition-fast);
    text-align: center;
    font-size: var(--font-size-sm);
    font-family: var(--font-heading);
    font-weight: 600;
    white-space: nowrap;
}

.template-chip:hover {
    background: var(--surface-hover);
    border-color: var(--primary-color);
    color: var(--primary-color);
    transform: translateY(-2px);
    box-shadow: 0 4px 10px rgba(37, 211, 102, 0.1);
}

/* Result Card */
.result-card {
    animation: slideUp 0.3s ease;
}

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

.generated-link {
    display: flex;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-lg);
}

.link-input {
    flex: 1;
    font-family: 'Monaco', 'Menlo', monospace;
    font-size: var(--font-size-sm);
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    color: var(--primary-color);
}

.btn-copy {
    width: 50px;
    height: 50px;
    background: var(--primary-color);
    color: white;
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: var(--transition-fast);
}

.btn-copy:hover {
    background: var(--secondary-color);
    transform: scale(1.05);
}

.result-actions {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-lg);
}

.btn-action {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    border: none;
    cursor: pointer;
    font-family: inherit;
    font-size: var(--font-size-sm);
    font-weight: 500;
    transition: var(--transition-fast);
}

.btn-whatsapp {
    background: var(--primary-color);
    color: white;
}

.btn-share {
    background: var(--accent-color);
    color: white;
}

.btn-qr {
    background: var(--surface-hover);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

/* QR Code */
.qr-container {
    text-align: center;
    padding: var(--spacing-lg);
    background: var(--bg-secondary);
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
}

#qr-canvas {
    display: block;
    margin: 0 auto;
    margin-bottom: var(--spacing-md);
    border-radius: var(--radius-sm);
    box-shadow: var(--shadow-sm);
}

/* Sections */
.section {
    display: none;
}

.section.active {
    display: block;
}

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

.section-header h2 {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin: 0;
}

/* Templates List */
.templates-list {
    display: grid;
    gap: var(--spacing-md);
}

.template-item {
    background: var(--surface-color);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: var(--spacing-lg);
    transition: var(--transition-fast);
}

.template-item:hover {
    border-color: var(--primary-color);
    box-shadow: 0 4px 15px rgba(37, 211, 102, 0.1);
    transform: translateY(-2px);
}

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

.template-title {
    font-weight: 600;
    color: var(--text-primary);
}

.template-category {
    padding: var(--spacing-xs) var(--spacing-sm);
    background: var(--primary-color);
    color: white;
    border-radius: var(--radius-sm);
    font-size: var(--font-size-xs);
    text-transform: uppercase;
    font-weight: 500;
}

.template-message {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-md);
    font-style: italic;
}

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

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

/* History List */
.history-list {
    display: grid;
    gap: var(--spacing-md);
}

.history-item {
    background: var(--surface-color);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: var(--spacing-lg);
    transition: var(--transition-fast);
}

.history-item:hover {
    border-color: var(--primary-color);
    box-shadow: 0 4px 15px rgba(37, 211, 102, 0.1);
    transform: translateY(-2px);
}

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

.history-phone {
    font-weight: 600;
    color: var(--primary-color);
}

.history-date {
    font-size: var(--font-size-sm);
    color: var(--text-muted);
}

.history-message {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-md);
    font-style: italic;
}

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

/* Empty States */
.empty-state {
    text-align: center;
    padding: var(--spacing-xl) var(--spacing-md);
    color: var(--text-muted);
}

.empty-state i {
    font-size: 3rem;
    margin-bottom: var(--spacing-md);
    opacity: 0.5;
}

.empty-state h3 {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-sm);
}

/* FAQ */
#templates.active ~ .faq-section,
#history.active ~ .faq-section {
    display: none !important;
}

.faq-section {
    margin-top: calc(var(--spacing-xl) * 2);
    padding: var(--spacing-xl) 0;
    border-top: 1px dashed rgba(37, 211, 102, 0.3);
}

.faq-section h2 {
    max-width: 800px;
    margin: 0 auto var(--spacing-xl);
    text-align: center;
}

.faq-container {
    max-width: 800px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.faq-item {
    background: var(--surface-color);
    backdrop-filter: blur(24px);
    -webkit-backdrop-filter: blur(24px);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    transition: var(--transition-fast);
    overflow: hidden;
}

.faq-item:hover {
    border-color: var(--primary-color);
    box-shadow: 0 4px 15px rgba(37, 211, 102, 0.08);
    transform: translateY(-2px);
}

.faq-question {
    width: 100%;
    padding: var(--spacing-lg) var(--spacing-xl);
    background: none;
    border: none;
    text-align: left;
    font-size: var(--font-size-lg);
    font-family: var(--font-heading);
    font-weight: 600;
    letter-spacing: -0.01em;
    color: var(--text-primary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: space-between;
    transition: var(--transition-fast);
}

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

.faq-icon {
    font-size: var(--font-size-xl);
    font-weight: 400;
    color: var(--primary-color);
    transition: all 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.faq-question[aria-expanded="true"] .faq-icon {
    transform: rotate(45deg) scale(1.1);
}

.faq-answer {
    padding: 0 var(--spacing-xl) var(--spacing-lg);
    color: var(--text-secondary);
    line-height: 1.6;
}

/* Modals */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(4px);
    z-index: 2000;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-md);
    opacity: 0;
    visibility: hidden;
    transition: var(--transition-normal);
}

.modal-overlay.active {
    opacity: 1;
    visibility: visible;
}

.modal {
    background: var(--surface-color);
    backdrop-filter: blur(24px);
    -webkit-backdrop-filter: blur(24px);
    border-radius: var(--radius-xl);
    width: 100%;
    max-width: 500px;
    max-height: 90vh;
    overflow-y: auto;
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-lg), 0 0 40px rgba(0,0,0,0.1);
    transform: scale(0.95);
    transition: var(--transition-normal);
}

.modal-overlay.active .modal {
    transform: scale(1);
}

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

.modal-header h3 {
    margin: 0;
    color: var(--text-primary);
}

.btn-close {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: var(--surface-hover);
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    transition: var(--transition-fast);
}

.btn-close:hover {
    background: var(--error-color);
    color: white;
}

.modal-form {
    padding: var(--spacing-lg);
}

.modal-actions {
    display: flex;
    gap: var(--spacing-sm);
    justify-content: flex-end;
    margin-top: var(--spacing-lg);
}

/* Toast Notifications */
.toast-container {
    position: fixed;
    top: 90px;
    right: var(--spacing-md);
    z-index: 3000;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    pointer-events: none;
}

.toast {
    background: var(--surface-color);
    color: var(--text-primary);
    padding: var(--spacing-md) var(--spacing-lg);
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-md);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    min-width: 250px;
    animation: slideInRight 0.3s ease;
    pointer-events: auto;
}

.toast.success {
    border-color: var(--success-color);
    background: rgba(37, 211, 102, 0.1);
}

.toast.error {
    border-color: var(--error-color);
    background: rgba(220, 53, 69, 0.1);
}

@keyframes slideInRight {
    from {
        opacity: 0;
        transform: translateX(100%);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

/* Footer */
.app-footer {
    padding: var(--spacing-xl) 0 calc(var(--spacing-xl) + 80px);
    background: var(--bg-tertiary);
    border-top: 1px solid var(--border-color);
    margin-top: calc(var(--spacing-xl) * 2);
}

.footer-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-lg);
    text-align: center;
}

.footer-brand {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-xs);
    order: 2;
}

.footer-credits {
    font-size: var(--font-size-sm);
    color: var(--text-muted);
    margin: var(--spacing-xs) 0;
}

.footer-links {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-lg);
    order: 1;
}

.footer-links a {
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--text-secondary);
    text-decoration: none;
    transition: var(--transition-fast);
}

.footer-links a:hover {
    color: var(--primary-color);
}

.app-footer p {
    margin: var(--spacing-xs) 0;
    font-size: var(--font-size-sm);
    color: var(--text-muted);
}

.b20-link {
    color: var(--primary-color);
    font-weight: 600;
    text-decoration: none;
    transition: var(--transition-fast);
}

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

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

.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;
}

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

.text-success {
    color: var(--success-color);
}

.text-error {
    color: var(--error-color);
}

.mb-0 { margin-bottom: 0; }
.mb-sm { margin-bottom: var(--spacing-sm); }
.mb-md { margin-bottom: var(--spacing-md); }
.mb-lg { margin-bottom: var(--spacing-lg); }

.mt-0 { margin-top: 0; }
.mt-sm { margin-top: var(--spacing-sm); }
.mt-md { margin-top: var(--spacing-md); }
.mt-lg { margin-top: var(--spacing-lg); }