/* ============================================
   RESET E BASE
   ============================================ */

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* Cores - Tema Claro */
    --color-primary: #2563eb;
    --color-primary-dark: #1d4ed8;
    --color-secondary: #10b981;
    --color-secondary-dark: #059669;
    --color-text: #1f2937;
    --color-text-light: #6b7280;
    --color-bg: #ffffff;
    --color-bg-alt: #f9fafb;
    --color-border: #e5e7eb;
    --color-shadow: rgba(0, 0, 0, 0.1);
    
    /* Espaçamentos */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 4rem;
    
    /* Fontes */
    --font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    --font-size-base: 1rem;
    --font-size-sm: 0.875rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 2rem;
    --font-size-4xl: 2.5rem;
    
    /* Bordas */
    --border-radius-sm: 0.25rem;
    --border-radius-md: 0.5rem;
    --border-radius-lg: 1rem;
    
    /* Transições */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
}

/* Tema Escuro */
body.dark-theme {
    --color-text: #ffffff;
    --color-text-light: #d1d5db;
    --color-bg: #202020;
    --color-bg-alt: #2a2a2a;
    --color-border: #404040;
    --color-shadow: rgba(0, 0, 0, 0.3);
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    color: var(--color-text);
    background-color: var(--color-bg);
    line-height: 1.6;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

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

ul {
    list-style: none;
}

/* ============================================
   CONTAINER
   ============================================ */

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

/* ============================================
   HEADER / NAVIGATION
   ============================================ */

.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background-color: var(--color-bg);
    box-shadow: 0 2px 10px var(--color-shadow);
    z-index: 1000;
}

.nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-sm) var(--spacing-md);
    max-width: 1200px;
    margin: 0 auto;
}

.nav__logo .logo {
    font-size: var(--font-size-2xl);
    font-weight: bold;
    color: var(--color-primary);
}

.nav__menu {
    display: flex;
    gap: var(--spacing-lg);
}

.nav__link {
    color: var(--color-text);
    font-weight: 500;
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--border-radius-sm);
    transition: color var(--transition-fast), background-color var(--transition-fast);
}

.nav__link:hover {
    color: var(--color-primary);
    background-color: var(--color-bg-alt);
}

.nav__toggle {
    display: none;
    flex-direction: column;
    gap: 4px;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--spacing-xs);
}

.nav__toggle-line {
    width: 25px;
    height: 3px;
    background-color: var(--color-text);
    transition: background-color var(--transition-fast);
}

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

.theme-toggle {
    background: none;
    border: 2px solid var(--color-border);
    border-radius: 50%;
    width: 40px;
    height: 40px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
}

.theme-toggle:hover {
    border-color: var(--color-primary);
    transform: scale(1.1);
}

.theme-toggle__icon {
    font-size: 1.2rem;
    transition: transform var(--transition-fast);
}

/* ============================================
   HERO SECTION
   ============================================ */

.hero {
    padding: calc(var(--spacing-2xl) + var(--spacing-xl)) 0 var(--spacing-2xl);
    background: linear-gradient(135deg, var(--color-bg-alt) 0%, var(--color-bg) 100%);
    min-height: 100vh;
    display: flex;
    align-items: center;
}

.hero__container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-2xl);
    align-items: center;
}

.hero__content {
    animation: fadeInLeft 1s ease;
}

.hero__title {
    font-size: var(--font-size-4xl);
    font-weight: bold;
    color: var(--color-text);
    margin-bottom: var(--spacing-md);
    line-height: 1.2;
}

.hero__subtitle {
    font-size: var(--font-size-lg);
    color: var(--color-text-light);
    margin-bottom: var(--spacing-lg);
}

.hero__cta {
    display: flex;
    gap: var(--spacing-md);
    flex-wrap: wrap;
}

.hero__image {
    animation: fadeInRight 1s ease;
}

.hero__img {
    border-radius: var(--border-radius-lg);
    box-shadow: 0 10px 30px var(--color-shadow);
}

/* ============================================
   BUTTONS
   ============================================ */

.btn {
    display: inline-block;
    padding: var(--spacing-sm) var(--spacing-lg);
    font-size: var(--font-size-base);
    font-weight: 600;
    text-align: center;
    border-radius: var(--border-radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
    border: 2px solid transparent;
}

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

.btn--primary:hover {
    background-color: var(--color-primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px var(--color-shadow);
}

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

.btn--secondary:hover {
    background-color: var(--color-primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px var(--color-shadow);
}

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

.btn--outline:hover {
    background-color: var(--color-primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px var(--color-shadow);
}

.btn--whatsapp {
    background-color: #25D366;
    color: white;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    text-decoration: none;
    margin-top: var(--spacing-sm);
}

.btn--whatsapp:hover {
    background-color: #1da851;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(37, 211, 102, 0.3);
}

.contact__whatsapp {
    margin-top: var(--spacing-md);
}

/* ============================================
   SECTIONS
   ============================================ */

section {
    padding: var(--spacing-2xl) 0;
}

.section__title {
    font-size: var(--font-size-3xl);
    font-weight: bold;
    color: var(--color-text);
    text-align: center;
    margin-bottom: var(--spacing-sm);
}

.section__subtitle {
    font-size: var(--font-size-lg);
    color: var(--color-text-light);
    text-align: center;
    margin-bottom: var(--spacing-2xl);
}

/* ============================================
   ABOUT SECTION
   ============================================ */

.about {
    background-color: var(--color-bg-alt);
}

.about__content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-2xl);
    align-items: center;
    margin-top: var(--spacing-2xl);
}

.about__text h3 {
    font-size: var(--font-size-2xl);
    font-weight: bold;
    color: var(--color-text);
    margin-bottom: var(--spacing-md);
}

.about__description {
    color: var(--color-text-light);
    line-height: 1.8;
    margin-bottom: var(--spacing-md);
}

.about__skills {
    margin-top: var(--spacing-lg);
}

.about__skills h4 {
    font-size: var(--font-size-lg);
    font-weight: bold;
    color: var(--color-text);
    margin-bottom: var(--spacing-sm);
}

.skills__list {
    list-style: none;
    padding: 0;
}

.skills__list li {
    color: var(--color-text-light);
    padding: var(--spacing-xs) 0;
    padding-left: var(--spacing-md);
    position: relative;
}

.skills__list li::before {
    content: "•";
    color: var(--color-primary);
    position: absolute;
    left: 0;
    font-weight: bold;
}

.about__image {
    display: flex;
    justify-content: center;
}

.about__img {
    max-width: 100%;
    border-radius: var(--border-radius-lg);
    box-shadow: 0 10px 30px var(--color-shadow);
}

/* ============================================
   SERVICES SECTION
   ============================================ */

.services {
    background-color: var(--color-bg-alt);
}

.services__grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-lg);
}

.service-card {
    background-color: var(--color-bg);
    padding: var(--spacing-lg);
    border-radius: var(--border-radius-lg);
    box-shadow: 0 4px 6px var(--color-shadow);
    transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

.service-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 15px var(--color-shadow);
}

.service-card__icon {
    width: 300px;
    height: 100px;
    margin-bottom: var(--spacing-md);
}

.service-card__icon img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: var(--border-radius-md);
}

.service-card__title {
    font-size: var(--font-size-xl);
    font-weight: bold;
    color: var(--color-text);
    margin-bottom: var(--spacing-sm);
}

.service-card__description {
    color: var(--color-text-light);
    line-height: 1.6;
}

/* ============================================
   SOFTWARE SECTION
   ============================================ */

.software__grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--spacing-xl);
}

.software-card {
    background-color: var(--color-bg);
    border-radius: var(--border-radius-lg);
    overflow: hidden;
    box-shadow: 0 4px 6px var(--color-shadow);
    transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

.software-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 15px var(--color-shadow);
}

.software-card__image {
    width: 100%;
    height: 200px;
    overflow: hidden;
}

.software-card__image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.software-card__content {
    padding: var(--spacing-lg);
}

.software-card__title {
    font-size: var(--font-size-xl);
    font-weight: bold;
    color: var(--color-text);
    margin-bottom: var(--spacing-sm);
}

.software-card__description {
    color: var(--color-text-light);
    margin-bottom: var(--spacing-md);
    line-height: 1.6;
}

.software-card__video {
    margin-bottom: var(--spacing-md);
}

.software-card__video video {
    width: 100%;
    border-radius: var(--border-radius-md);
}

/* ============================================
   TESTIMONIALS SECTION
   ============================================ */

.testimonials {
    background-color: var(--color-bg-alt);
}

.testimonials__grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-lg);
}

.testimonial-card {
    background-color: var(--color-bg);
    padding: var(--spacing-lg);
    border-radius: var(--border-radius-lg);
    box-shadow: 0 4px 6px var(--color-shadow);
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
}

.testimonial-card__image {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    overflow: hidden;
    margin-bottom: var(--spacing-md);
}

.testimonial-card__image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.testimonial-card__text {
    color: var(--color-text-light);
    font-style: italic;
    margin-bottom: var(--spacing-md);
    line-height: 1.6;
}

.testimonial-card__name {
    font-size: var(--font-size-lg);
    font-weight: bold;
    color: var(--color-text);
    margin-bottom: var(--spacing-xs);
}

.testimonial-card__role {
    color: var(--color-text-light);
    font-size: var(--font-size-sm);
}

/* ============================================
   CONTACT SECTION
   ============================================ */

.contact__content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-2xl);
    margin-top: var(--spacing-xl);
}

.contact__info {
    background-color: var(--color-bg-alt);
    padding: var(--spacing-lg);
    border-radius: var(--border-radius-lg);
}

.contact__info h3 {
    font-size: var(--font-size-xl);
    margin-bottom: var(--spacing-md);
    color: var(--color-text);
}

.contact__item {
    margin-bottom: var(--spacing-md);
}

.contact__item strong {
    display: block;
    margin-bottom: var(--spacing-xs);
    color: var(--color-text);
}

.contact__item a,
.contact__item p {
    color: var(--color-text-light);
}

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

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

.form__group {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.form__group label {
    font-weight: 500;
    color: var(--color-text);
}

.form__group input,
.form__group textarea {
    padding: var(--spacing-sm);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-md);
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    transition: border-color var(--transition-fast);
    background-color: var(--color-bg);
    color: var(--color-text);
}

body.dark-theme .form__group input,
body.dark-theme .form__group textarea {
    background-color: #000000;
    color: #ffffff;
}

.form__group input:focus,
.form__group textarea:focus {
    outline: none;
    border-color: var(--color-primary);
}

.form__group textarea {
    resize: vertical;
}

/* ============================================
   FOOTER
   ============================================ */

.footer {
    background-color: #ffffff;
    color: #1f2937;
    padding: var(--spacing-2xl) 0 var(--spacing-md);
}

body.dark-theme .footer {
    background-color: #333333;
    color: white;
}

.footer__content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
}

.footer__title {
    font-size: var(--font-size-xl);
    font-weight: bold;
    margin-bottom: var(--spacing-md);
}

.footer__text {
    color: var(--color-text-light);
    line-height: 1.6;
}

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

.footer__links a {
    color: var(--color-text-light);
    transition: color var(--transition-fast);
}

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

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

.footer__social a {
    color: var(--color-text-light);
    transition: color var(--transition-fast);
}

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

body.dark-theme .footer__text,
body.dark-theme .footer__links a,
body.dark-theme .footer__social a {
    color: rgba(255, 255, 255, 0.8);
}

body.dark-theme .footer__links a:hover,
body.dark-theme .footer__social a:hover {
    color: white;
}

.footer__bottom {
    text-align: center;
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--color-border);
    color: var(--color-text-light);
}

body.dark-theme .footer__bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: rgba(255, 255, 255, 0.6);
}

/* ============================================
   ANIMATIONS
   ============================================ */

@keyframes fadeInLeft {
    from {
        opacity: 0;
        transform: translateX(-30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

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

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

/* ============================================
   RESPONSIVE
   ============================================ */

@media (max-width: 768px) {
    :root {
        --font-size-4xl: 2rem;
        --font-size-3xl: 1.75rem;
        --font-size-2xl: 1.25rem;
    }
    
    .nav__menu {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background-color: var(--color-bg);
        flex-direction: column;
        padding: var(--spacing-md);
        box-shadow: 0 4px 6px var(--color-shadow);
    }
    
    .nav__menu.active {
        display: flex;
    }
    
    .nav__toggle {
        display: flex;
    }
    
    .hero__container {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .hero__cta {
        justify-content: center;
    }
    
    .contact__content {
        grid-template-columns: 1fr;
    }
    
    .software__grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 var(--spacing-sm);
    }
    
    .hero__title {
        font-size: var(--font-size-2xl);
    }
    
    .hero__cta {
        flex-direction: column;
    }
    
    .btn {
        width: 100%;
    }
}