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

:root {
    --primary-blue: #2567a6;
    --primary-blue-light: rgba(37, 103, 166, 0.1);
    --primary-blue-dark: #1a4d7a;
    --background-gradient: rgba(37, 103, 166, 0.08);
    --text-primary: #1a202c;
    --text-secondary: #4a5568;
    --text-muted: #718096;
    --white: #ffffff;
    --gray-50: #f9fafb;
    --gray-100: #f3f4f6;
    --gray-200: #e5e7eb;
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 15px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 40px rgba(0, 0, 0, 0.15);
    --border-radius: 16px;
    --border-radius-lg: 24px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.6;
    color: var(--text-primary);
    background: linear-gradient(135deg, var(--background-gradient) 0%, var(--white) 100%);
    min-height: 100vh;
    font-feature-settings: 'cv02', 'cv03', 'cv04', 'cv11';
}

/* Página inicial */
.homepage-wrapper {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2rem;
    position: relative;
}

.content-area {
    width: 100%;
    max-width: 600px;
    position: relative;
}

.site-header {
    background: var(--white);
    border-radius: var(--border-radius-lg);
    padding: 3rem 2.5rem;
    box-shadow: var(--shadow-lg);
    text-align: center;
    position: relative;
    overflow: hidden;
}

.site-header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 6px;
    background: linear-gradient(90deg, var(--primary-blue) 0%, var(--primary-blue-dark) 100%);
}

.brand-logo {
    display: flex;
    flex-direction: column;
    align-items: center;
    margin-bottom: 1.5rem;
}

.logo-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--primary-blue) 0%, var(--primary-blue-dark) 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1rem;
    box-shadow: var(--shadow-md);
}

.logo-icon i {
    width: 36px;
    height: 36px;
    color: var(--white);
    stroke-width: 2;
}

.brand-title {
    font-size: 2.25rem;
    font-weight: 700;
    color: var(--primary-blue);
    letter-spacing: -0.025em;
    line-height: 1.2;
    margin-bottom: 0;
}

.site-description {
    font-size: 1.125rem;
    color: rgba(45, 55, 72, 0.5);
    margin-bottom: 2rem;
    line-height: 1.5;
    font-weight: 400;
}

.primary-access-btn {
    background: linear-gradient(135deg, var(--primary-blue) 0%, var(--primary-blue-dark) 100%);
    color: var(--white);
    border: none;
    padding: 1rem 2.5rem;
    border-radius: 50px;
    font-size: 1.125rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    box-shadow: 0 8px 25px rgba(37, 103, 166, 0.25);
    margin-bottom: 2.5rem;
    position: relative;
    overflow: hidden;
}

.primary-access-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.5s;
}

.primary-access-btn:hover::before {
    left: 100%;
}

.primary-access-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 35px rgba(37, 103, 166, 0.35);
}

.primary-access-btn i {
    width: 20px;
    height: 20px;
    stroke-width: 2.5;
}

.info-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2.5rem;
}

.info-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    padding: 1rem;
    background: var(--gray-50);
    border-radius: var(--border-radius);
    transition: var(--transition);
}

.info-item:hover {
    background: var(--primary-blue-light);
    transform: translateY(-2px);
}

.info-item i {
    width: 24px;
    height: 24px;
    color: var(--primary-blue);
    stroke-width: 2;
}

.info-item span {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-secondary);
    text-align: center;
}

.page-footer {
    border-top: 1px solid var(--gray-200);
    padding-top: 2rem;
}

.footer-links {
    display: flex;
    justify-content: center;
    gap: 2rem;
    margin-bottom: 1.5rem;
    flex-wrap: wrap;
}

.footer-link {
    color: var(--primary-blue);
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    transition: var(--transition);
}

.footer-link:hover {
    color: var(--primary-blue-dark);
    transform: translateY(-1px);
}

.footer-link i {
    width: 16px;
    height: 16px;
    stroke-width: 2;
}

.legal-info {
    color: var(--text-muted);
    font-size: 0.8rem;
    text-align: center;
    line-height: 1.5;
}

.support-link {
    color: var(--primary-blue);
    text-decoration: none;
    transition: var(--transition);
}

.support-link:hover {
    text-decoration: underline;
}

/* Sistema de verificação (modal) */
.modal-backdrop {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(8px);
    z-index: 50;
    transition: var(--transition);
}

.verification-modal {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 90%;
    max-width: 500px;
    height: 80vh;
    max-height: 700px;
    background: var(--white);
    border-radius: var(--border-radius-lg);
    box-shadow: 0 25px 80px rgba(0, 0, 0, 0.25);
    z-index: 100;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    transition: var(--transition);
}

.modal-header {
    background: linear-gradient(135deg, var(--primary-blue) 0%, var(--primary-blue-dark) 100%);
    color: var(--white);
    padding: 1.5rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: var(--shadow-sm);
}

.header-info {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.header-info i {
    width: 24px;
    height: 24px;
    stroke-width: 2;
}

.system-title {
    font-size: 1.25rem;
    font-weight: 600;
    letter-spacing: -0.025em;
}

.close-system-btn {
    background: none;
    border: none;
    color: var(--white);
    cursor: pointer;
    padding: 0.5rem;
    border-radius: 50%;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
}

.close-system-btn:hover {
    background: rgba(255, 255, 255, 0.15);
}

.close-system-btn i {
    width: 20px;
    height: 20px;
    stroke-width: 2.5;
}

.conversation-area {
    flex: 1;
    padding: 2rem;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

/* Mensagens da conversa */
.dialog-message {
    max-width: 85%;
    padding: 1rem 1.25rem;
    border-radius: 18px;
    font-size: 0.95rem;
    line-height: 1.5;
    animation: messageSlideIn 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    word-wrap: break-word;
}

.system-message {
    background: var(--gray-100);
    color: var(--text-primary);
    align-self: flex-start;
    border-bottom-left-radius: 8px;
    border: 1px solid var(--gray-200);
}

.user-message {
    background: linear-gradient(135deg, var(--primary-blue) 0%, var(--primary-blue-dark) 100%);
    color: var(--white);
    align-self: flex-end;
    border-bottom-right-radius: 8px;
    box-shadow: var(--shadow-sm);
}

.typing-status {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 1rem 1.25rem;
    background: var(--gray-100);
    border-radius: 18px;
    border-bottom-left-radius: 8px;
    max-width: 85%;
    align-self: flex-start;
    border: 1px solid var(--gray-200);
}

.typing-animation {
    display: flex;
    gap: 4px;
}

.typing-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--primary-blue);
    animation: typingBounce 1.4s infinite ease-in-out;
}

.typing-dot:nth-child(1) { animation-delay: -0.32s; }
.typing-dot:nth-child(2) { animation-delay: -0.16s; }
.typing-dot:nth-child(3) { animation-delay: 0s; }

.verification-button {
    background: linear-gradient(135deg, var(--primary-blue) 0%, var(--primary-blue-dark) 100%);
    color: var(--white);
    border: none;
    padding: 0.875rem 1.75rem;
    border-radius: 25px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    margin-top: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    box-shadow: 0 4px 15px rgba(37, 103, 166, 0.25);
    align-self: flex-start;
}

.verification-button:hover {
    transform: translateY(-1px);
    box-shadow: 0 6px 20px rgba(37, 103, 166, 0.35);
}

.input-section {
    padding: 1.5rem 2rem;
    border-top: 1px solid var(--gray-200);
    background: var(--gray-50);
}

.input-wrapper {
    display: flex;
    gap: 0.75rem;
    align-items: flex-end;
}

.text-input {
    flex: 1;
    padding: 0.875rem 1.25rem;
    border: 2px solid var(--gray-200);
    border-radius: 25px;
    font-size: 1rem;
    outline: none;
    transition: var(--transition);
    background: var(--white);
    font-family: inherit;
}

.text-input:focus {
    border-color: var(--primary-blue);
    box-shadow: 0 0 0 3px var(--primary-blue-light);
}

.submit-btn {
    background: linear-gradient(135deg, var(--primary-blue) 0%, var(--primary-blue-dark) 100%);
    color: var(--white);
    border: none;
    width: 48px;
    height: 48px;
    border-radius: 50%;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-sm);
}

.submit-btn:hover {
    transform: scale(1.05);
    box-shadow: 0 4px 15px rgba(37, 103, 166, 0.25);
}

.submit-btn:disabled {
    background: var(--gray-200);
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
}

.submit-btn i {
    width: 18px;
    height: 18px;
    stroke-width: 2.5;
}

/* Estados de visibilidade */
.invisible {
    display: none !important;
}

/* Animações */
@keyframes messageSlideIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes typingBounce {
    0%, 60%, 100% {
        transform: translateY(0);
    }
    30% {
        transform: translateY(-8px);
    }
}

/* Responsividade */
@media (max-width: 768px) {
    .homepage-wrapper {
        padding: 1rem;
    }
    
    .site-header {
        padding: 2rem 1.5rem;
    }
    
    .brand-title {
        font-size: 1.875rem;
    }
    
    .logo-icon {
        width: 70px;
        height: 70px;
    }
    
    .logo-icon i {
        width: 32px;
        height: 32px;
    }
    
    .info-grid {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
    
    .footer-links {
        gap: 1rem;
    }
    
    .verification-modal {
        width: 95%;
        height: 85vh;
    }
    
    .conversation-area {
        padding: 1.5rem;
    }
    
    .dialog-message {
        max-width: 90%;
    }
}

@media (max-width: 480px) {
    .site-header {
        padding: 1.5rem 1rem;
    }
    
    .brand-title {
        font-size: 1.625rem;
    }
    
    .primary-access-btn {
        padding: 0.875rem 2rem;
        font-size: 1rem;
    }
    
    .footer-links {
        flex-direction: column;
        gap: 0.75rem;
        align-items: center;
    }
    
    .modal-header {
        padding: 1.25rem 1.5rem;
    }
    
    .input-section {
        padding: 1.25rem 1.5rem;
    }
}

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

/* Modo escuro (se necessário no futuro) */
@media (prefers-color-scheme: dark) {
    :root {
        --text-primary: #f7fafc;
        --text-secondary: #e2e8f0;
        --text-muted: #a0aec0;
        --gray-50: #2d3748;
        --gray-100: #4a5568;
        --gray-200: #718096;
    }
}