/* Reset e configurações base */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* Cores principais */
    --primary-color: #6366f1;
    --primary-hover: #4f46e5;
    --primary-light: #e0e7ff;
    --secondary-color: #10b981;
    --secondary-hover: #059669;
    
    /* Cores neutras */
    --text-primary: #1f2937;
    --text-secondary: #6b7280;
    --text-muted: #9ca3af;
    --background: #f9fafb;
    --surface: #ffffff;
    --border: #e5e7eb;
    --border-focus: #6366f1;
    
    /* Cores de estado */
    --success: #10b981;
    --success-light: #d1fae5;
    --error: #ef4444;
    --error-light: #fee2e2;
    --warning: #f59e0b;
    --warning-light: #fef3c7;
    
    /* 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);
    
    /* Transições */
    --transition-fast: 0.15s ease-in-out;
    --transition-normal: 0.3s ease-in-out;
    --transition-slow: 0.5s ease-in-out;
    
    /* Bordas */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    line-height: 1.6;
    color: var(--text-primary);
    padding: 1rem;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* Container principal */
.main-container {
    width: 100%;
    max-width: 1200px;
    background: var(--surface);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl);
    overflow: hidden;
    display: grid;
    grid-template-columns: 1fr 1fr;
    min-height: 600px;
    position: relative;
}

/* Animação de entrada */
.main-container {
    animation: slideUp 0.6s ease-out;
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Coluna do formulário */
.form-column {
    padding: 3rem 2.5rem;
    display: flex;
    flex-direction: column;
    justify-content: center;
    position: relative;
    overflow-y: auto;
}

/* Coluna de informações */
.info-column {
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.9) 0%, rgba(79, 70, 229, 0.9) 100%),
                url('https://iannini.online/eventos/fundo.png');
    background-size: cover;
    background-position: center;
    color: white;
    padding: 3rem 2.5rem;
    display: flex;
    flex-direction: column;
    justify-content: center;
    text-align: center;
    position: relative;
}

.info-column::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.1) 0%, rgba(79, 70, 229, 0.2) 100%);
    backdrop-filter: blur(1px);
}

.info-column > * {
    position: relative;
    z-index: 1;
}

/* Logo */
.form-logo {
    width: 160px;
    height: auto;
    margin: 0 auto 2rem auto;
    display: block;
    filter: drop-shadow(var(--shadow-sm));
}

/* Títulos */
.form-title {
    font-size: 2rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
    text-align: center;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-hover));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.form-subtitle {
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-bottom: 2rem;
    text-align: center;
    font-weight: 400;
}

/* Progress indicator */
.progress-indicator {
    display: flex;
    justify-content: center;
    margin-bottom: 2rem;
    gap: 0.5rem;
}

.progress-step {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--border);
    transition: var(--transition-normal);
}

.progress-step.active {
    background: var(--primary-color);
    transform: scale(1.2);
}

/* Grupos de formulário */
.form-group {
    margin-bottom: 1.5rem;
    position: relative;
}

.form-group label {
    display: block;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
    font-size: 0.95rem;
    transition: var(--transition-fast);
}

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

/* Campos de entrada */
.form-input {
    width: 100%;
    padding: 0.875rem 1rem;
    border: 2px solid var(--border);
    border-radius: var(--radius-md);
    font-size: 1rem;
    color: var(--text-primary);
    background: var(--surface);
    transition: var(--transition-fast);
    position: relative;
}

.form-input:focus {
    outline: none;
    border-color: var(--border-focus);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
    transform: translateY(-1px);
}

.form-input:hover:not(:focus) {
    border-color: var(--text-muted);
}

.form-input.error {
    border-color: var(--error);
    box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.1);
}

.form-input.success {
    border-color: var(--success);
    box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.1);
}

/* Ícones nos campos */
.input-wrapper {
    position: relative;
}

.input-icon {
    position: absolute;
    right: 1rem;
    top: 50%;
    transform: translateY(-50%);
    width: 20px;
    height: 20px;
    opacity: 0.5;
    transition: var(--transition-fast);
    pointer-events: none;
}

.form-input:focus + .input-icon {
    opacity: 1;
    color: var(--primary-color);
}

/* Mensagens de validação */
.field-message {
    font-size: 0.875rem;
    margin-top: 0.5rem;
    display: flex;
    align-items: center;
    gap: 0.25rem;
    opacity: 0;
    transform: translateY(-5px);
    transition: var(--transition-fast);
}

.field-message.show {
    opacity: 1;
    transform: translateY(0);
}

.field-message.error {
    color: var(--error);
}

.field-message.success {
    color: var(--success);
}

/* Indicador obrigatório */
.required {
    color: var(--error);
    font-weight: 600;
}

/* Botões */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.875rem 1.5rem;
    border: none;
    border-radius: var(--radius-md);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition-fast);
    text-decoration: none;
    position: relative;
    overflow: hidden;
}

.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-hover));
    color: white;
    box-shadow: var(--shadow-md);
}

.btn-primary:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

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

.btn-secondary {
    background: linear-gradient(135deg, var(--secondary-color), var(--secondary-hover));
    color: white;
    box-shadow: var(--shadow-md);
}

.btn-secondary:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-full {
    width: 100%;
}

/* Loading spinner */
.btn-loading {
    position: relative;
    color: transparent;
}

.btn-loading::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 20px;
    height: 20px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-top: 2px solid white;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    to {
        transform: translate(-50%, -50%) rotate(360deg);
    }
}

/* Alertas e mensagens */
.alert {
    padding: 1rem 1.25rem;
    border-radius: var(--radius-md);
    margin-bottom: 1.5rem;
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
    animation: slideDown 0.3s ease-out;
}

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

.alert-success {
    background: var(--success-light);
    color: #065f46;
    border: 1px solid #6ee7b7;
}

.alert-error {
    background: var(--error-light);
    color: #b91c1c;
    border: 1px solid #fca5a5;
}

.alert-icon {
    width: 20px;
    height: 20px;
    flex-shrink: 0;
    margin-top: 0.125rem;
}

/* Card de convite */
.invite-card {
    margin-top: 2rem;
    padding: 1.5rem;
    background: linear-gradient(135deg, #f8fafc 0%, #f1f5f9 100%);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    position: relative;
    overflow: hidden;
}

.invite-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
}

.invite-title {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.book-image {
    max-width: 200px;
    width: 100%;
    height: auto;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-md);
    margin: 0 auto 1.5rem auto;
    display: block;
    transition: var(--transition-normal);
}

.book-image:hover {
    transform: scale(1.05);
    box-shadow: var(--shadow-lg);
}

.share-link {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 1rem;
}

.share-input {
    flex: 1;
    padding: 0.75rem;
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    background: var(--surface);
    font-size: 0.9rem;
    cursor: pointer;
}

.copy-btn {
    padding: 0.75rem 1rem;
    background: var(--text-secondary);
    color: white;
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: var(--transition-fast);
}

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

.copy-btn.copied {
    background: var(--success);
}

/* Informações do evento */
.event-info h2 {
    font-size: 2.5rem;
    font-weight: 800;
    margin-bottom: 1rem;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.event-info p {
    font-size: 1.1rem;
    line-height: 1.7;
    margin-bottom: 1.5rem;
    opacity: 0.95;
}

.event-details {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    padding: 1.5rem;
    border-radius: var(--radius-lg);
    margin-top: 2rem;
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.event-details h3 {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: #fbbf24;
}

.event-details p {
    font-size: 0.95rem;
    margin-bottom: 0.75rem;
}

.event-details strong {
    color: #fbbf24;
}

/* Footer */
.form-footer {
    text-align: center;
    font-size: 0.875rem;
    color: var(--text-muted);
    margin-top: 2rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--border);
}

.form-footer a {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 500;
}

.form-footer a:hover {
    text-decoration: underline;
}

/* QR Code */
.qr-code-container {
    text-align: center;
    margin: 1.5rem 0;
}

.qr-code-image {
    background: white;
    padding: 0.75rem;
    border-radius: var(--radius-lg);
    border: 2px solid var(--border);
    box-shadow: var(--shadow-md);
    transition: var(--transition-normal);
}

.qr-code-image:hover {
    transform: scale(1.05);
    box-shadow: var(--shadow-lg);
}

/* Responsividade */
@media (max-width: 1024px) {
    .main-container {
        max-width: 900px;
    }
    
    .form-column,
    .info-column {
        padding: 2.5rem 2rem;
    }
}

@media (max-width: 768px) {
    body {
        padding: 0.5rem;
        align-items: flex-start;
        padding-top: 2rem;
    }
    
    .main-container {
        grid-template-columns: 1fr;
        max-width: 500px;
        min-height: auto;
    }
    
    .info-column {
        order: -1;
        min-height: 300px;
        padding: 2rem 1.5rem;
    }
    
    .form-column {
        padding: 2rem 1.5rem;
    }
    
    .form-title {
        font-size: 1.75rem;
    }
    
    .event-info h2 {
        font-size: 2rem;
    }
    
    .event-info p {
        font-size: 1rem;
    }
}

@media (max-width: 480px) {
    body {
        padding: 0.25rem;
        padding-top: 1rem;
    }
    
    .main-container {
        border-radius: var(--radius-lg);
    }
    
    .form-column,
    .info-column {
        padding: 1.5rem 1rem;
    }
    
    .form-logo {
        width: 140px;
        margin-bottom: 1.5rem;
    }
    
    .form-title {
        font-size: 1.5rem;
        margin-bottom: 0.25rem;
    }
    
    .form-subtitle {
        font-size: 1rem;
        margin-bottom: 1.5rem;
    }
    
    .event-info h2 {
        font-size: 1.75rem;
    }
    
    .event-details {
        padding: 1rem;
    }
    
    .invite-card {
        padding: 1rem;
    }
}

/* Animações de hover para interatividade */
.form-group:hover label {
    color: var(--primary-color);
}

.interactive-element {
    transition: var(--transition-fast);
}

.interactive-element:hover {
    transform: translateY(-1px);
}

/* Melhorias de acessibilidade */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* Focus visible para navegação por teclado */
.btn:focus-visible,
.form-input:focus-visible {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

/* Estilo para campos com máscara */
.masked-input {
    font-family: 'Courier New', monospace;
    letter-spacing: 0.5px;
}

/* Tooltip */
.tooltip {
    position: relative;
    display: inline-block;
}

.tooltip .tooltiptext {
    visibility: hidden;
    width: 200px;
    background-color: var(--text-primary);
    color: white;
    text-align: center;
    border-radius: var(--radius-md);
    padding: 0.5rem;
    position: absolute;
    z-index: 1;
    bottom: 125%;
    left: 50%;
    margin-left: -100px;
    opacity: 0;
    transition: var(--transition-fast);
    font-size: 0.875rem;
}

.tooltip:hover .tooltiptext {
    visibility: visible;
    opacity: 1;
}