/* ================================
   CSS CUSTOM PROPERTIES & RESET
   ================================ */

:root {
    /* Color Palette */
    --color-primary: #182b31;
    --color-secondary: #1e3460;
    --color-tertiary: #58717d;
    --color-quaternary: #b4c3cc;
    --color-background: #0a0e14;
    --color-text: #f4fefe;
    --color-text-muted: rgba(244, 254, 254, 0.7);
    
    /* Accent Colors */
    --color-accent: #4a9eff;
    --color-success: #10b981;
    --color-error: #ef4444;
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 4rem;
    --spacing-xl: 6rem;
    
    /* Typography */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    
    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-base: 0.3s ease;
    --transition-slow: 0.5s ease;
    
    /* Border Radius */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 20px;
    
    /* Shadows */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.2);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.3);
    --shadow-glow: 0 0 40px rgba(74, 158, 255, 0.3);
    
    /* Z-index */
    --z-nav: 1000;
    --z-back-to-top: 999;
    --z-overlay: 10;
}

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

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

body {
    font-family: var(--font-family);
    background-color: var(--color-background);
    color: var(--color-text);
    line-height: 1.6;
    overflow-x: hidden;
    isolation: isolate;
}

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

a {
    text-decoration: none;
    color: inherit;
}

ul {
    list-style: none;
}

button {
    border: none;
    background: none;
    font-family: inherit;
    cursor: pointer;
}

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

.nav {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 10000;
    padding: var(--spacing-sm) 0;
    transition: all var(--transition-base);
}

.nav.nav--scrolled {
    background: rgba(24, 43, 49, 0.9);
    backdrop-filter: blur(20px);
    box-shadow: var(--shadow-md);
}

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

.nav__logo-img {
    height: 100px;
    width: auto;
    transition: transform var(--transition-base);
}

.nav__logo-img:hover {
    transform: scale(1.05);
}

.nav__logo-text {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-text);
}

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

.nav__link {
    color: var(--color-text);
    font-weight: 500;
    position: relative;
    padding: 0.5rem 0;
    transition: color var(--transition-fast);
}

.nav__link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--color-accent);
    transition: width var(--transition-base);
}

.nav__link:hover {
    color: var(--color-accent);
}

.nav__link:hover::after {
    width: 100%;
}

.nav__toggle {
    display: none;
    flex-direction: column;
    gap: 6px;
    width: 30px;
    height: 24px;
    cursor: pointer;
    z-index: 1001;
}

.nav__toggle-line {
    width: 100%;
    height: 2px;
    background: var(--color-text);
    transition: all var(--transition-base);
    border-radius: 2px;
}

.nav__toggle.active .nav__toggle-line:nth-child(1) {
    transform: rotate(45deg) translate(8px, 8px);
}

.nav__toggle.active .nav__toggle-line:nth-child(2) {
    opacity: 0;
}

.nav__toggle.active .nav__toggle-line:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -7px);
}

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

.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
    padding: var(--spacing-xl) var(--spacing-md);
}

.hero__container {
    max-width: 1200px;
    margin: 0 auto;
    width: 100%;
    position: relative;
    z-index: 2;
}

.hero__content {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: var(--spacing-lg);
    align-items: center;
}

.hero__text {
    opacity: 0;
    animation: fadeInUp 1s ease forwards;
}

.hero__title {
    font-size: 3.5rem;
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: var(--spacing-md);
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.hero__title-line {
    display: block;
    background: linear-gradient(135deg, var(--color-text) 0%, var(--color-quaternary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    opacity: 0;
    animation: fadeInUp 0.8s ease forwards;
}

.hero__title-line:nth-child(1) {
    animation-delay: 0.2s;
}

.hero__title-line:nth-child(2) {
    animation-delay: 0.4s;
}

.hero__title-line:nth-child(3) {
    animation-delay: 0.6s;
}

.hero__subtitle {
    font-size: 1.125rem;
    color: var(--color-text-muted);
    margin-bottom: var(--spacing-md);
    max-width: 600px;
    line-height: 1.8;
}

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

.hero__image {
    position: relative;
    opacity: 0;
    animation: fadeInRight 1s ease forwards 0.5s;
}

.hero__image-wrapper {
    position: relative;
    width: 100%;
    max-width: 450px;
    margin: 0 auto;
}

.hero__img {
    width: 100%;
    height: auto;
    border-radius: var(--radius-lg);
    position: relative;
    z-index: 2;
    box-shadow: var(--shadow-lg);
}

.hero__image-glow {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 120%;
    height: 120%;
    background: radial-gradient(circle, rgba(74, 158, 255, 0.3) 0%, transparent 70%);
    filter: blur(40px);
    z-index: 1;
    animation: pulse 3s ease-in-out infinite;
}

.hero__scroll {
    position: absolute;
    bottom: var(--spacing-md);
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-xs);
    opacity: 0;
    animation: fadeIn 1s ease forwards 1.5s;
}

.hero__scroll-text {
    font-size: 0.875rem;
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 2px;
}

.hero__scroll-line {
    width: 1px;
    height: 60px;
    background: linear-gradient(to bottom, var(--color-accent), transparent);
    animation: scrollLine 2s ease-in-out infinite;
}

.hero__background {
    position: absolute;
    inset: 0;
    z-index: 1;
    overflow: hidden;
}

.hero__background-circle {
    position: absolute;
    border-radius: 50%;
    opacity: 0.1;
}

.hero__background-circle--1 {
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, var(--color-secondary) 0%, transparent 70%);
    top: -200px;
    right: -200px;
    animation: float 20s ease-in-out infinite;
}

.hero__background-circle--2 {
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, var(--color-primary) 0%, transparent 70%);
    bottom: -100px;
    left: -100px;
    animation: float 15s ease-in-out infinite reverse;
}

.hero__background-grid {
    position: absolute;
    inset: 0;
    background-image: 
        linear-gradient(rgba(180, 195, 204, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(180, 195, 204, 0.03) 1px, transparent 1px);
    background-size: 50px 50px;
    opacity: 0.5;
}

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

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.875rem 2rem;
    border-radius: var(--radius-sm);
    font-weight: 600;
    font-size: 1rem;
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
    white-space: nowrap;
}

.btn::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, transparent, rgba(255, 255, 255, 0.1));
    opacity: 0;
    transition: opacity var(--transition-base);
}

.btn:hover::before {
    opacity: 1;
}

.btn--primary {
    background: linear-gradient(135deg, var(--color-accent) 0%, #3b82f6 100%);
    color: white;
    box-shadow: 0 4px 15px rgba(74, 158, 255, 0.3);
}

.btn--primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(74, 158, 255, 0.4);
}

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

.btn--secondary:hover {
    background: var(--color-quaternary);
    color: var(--color-primary);
    transform: translateY(-2px);
}

.btn--full {
    width: 100%;
}

/* ================================
   SECTION STYLES
   ================================ */

.section__title {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
    position: relative;
}

.section__title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 0;
    width: 60px;
    height: 4px;
    background: linear-gradient(90deg, var(--color-accent), transparent);
    border-radius: 2px;
}

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

.section__title--center::after {
    left: 50%;
    transform: translateX(-50%);
}

.section__subtitle {
    font-size: 1.125rem;
    color: var(--color-text-muted);
    text-align: center;
    margin-bottom: var(--spacing-lg);
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

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

.about {
    padding: var(--spacing-xl) var(--spacing-md);
    background: linear-gradient(180deg, var(--color-background) 0%, var(--color-primary) 100%);
}

.about__container {
    max-width: 1200px;
    margin: 0 auto;
}

.about__content {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: var(--spacing-lg);
    align-items: center;
}

.about__image-wrapper {
    position: relative;
    max-width: 400px;
}

.about__img {
    width: 100%;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    position: relative;
    z-index: 2;
}

.about__image-border {
    position: absolute;
    inset: -20px;
    border: 2px solid var(--color-accent);
    border-radius: var(--radius-lg);
    opacity: 0.3;
    z-index: 1;
}

.about__description p {
    margin-bottom: var(--spacing-sm);
    color: var(--color-text-muted);
    line-height: 1.8;
}

.about__social {
    display: flex;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-md);
}

.social__link {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-sm);
    background: rgba(180, 195, 204, 0.1);
    color: var(--color-text);
    font-size: 1.25rem;
    transition: all var(--transition-base);
    backdrop-filter: blur(10px);
}

.social__link:hover {
    background: var(--color-accent);
    color: white;
    transform: translateY(-5px) scale(1.1);
    box-shadow: var(--shadow-glow);
}

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

.services {
    padding: var(--spacing-xl) var(--spacing-md);
    background: var(--color-background);
}

.services__container {
    max-width: 1200px;
    margin: 0 auto;
}

.services__grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--spacing-md);
    margin-top: var(--spacing-lg);
}

.service-card {
    background: linear-gradient(135deg, rgba(24, 43, 49, 0.6) 0%, rgba(30, 52, 96, 0.4) 100%);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    border: 1px solid rgba(180, 195, 204, 0.1);
    backdrop-filter: blur(10px);
    transition: all var(--transition-base);
    cursor: pointer;
}

.service-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 10px 40px rgba(74, 158, 255, 0.2);
    border-color: var(--color-accent);
}

.service-card__icon {
    width: 64px;
    height: 64px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--color-accent) 0%, #3b82f6 100%);
    border-radius: var(--radius-sm);
    font-size: 1.75rem;
    color: white;
    margin-bottom: var(--spacing-sm);
    transition: transform var(--transition-base);
}

.service-card:hover .service-card__icon {
    transform: scale(1.1) rotate(5deg);
}

.service-card__title {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
    color: var(--color-text);
}

.service-card__description {
    color: var(--color-text-muted);
    line-height: 1.7;
}

/* ================================
   PROJECTS SECTION
   ================================ */

.projects {
    padding: var(--spacing-xl) var(--spacing-md);
    background: linear-gradient(180deg, var(--color-background) 0%, var(--color-primary) 50%, var(--color-background) 100%);
}

.projects__container {
    max-width: 1200px;
    margin: 0 auto;
}

.projects__grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--spacing-md);
    margin-top: var(--spacing-lg);
}

.project-card {
    background: rgba(24, 43, 49, 0.6);
    border-radius: var(--radius-md);
    overflow: hidden;
    border: 1px solid rgba(180, 195, 204, 0.1);
    transition: all var(--transition-base);
    cursor: pointer;
}

.project-card:hover {
    transform: translateY(-10px) rotateX(5deg);
    box-shadow: 0 15px 50px rgba(74, 158, 255, 0.3);
    border-color: var(--color-accent);
}

.project-card__image {
    position: relative;
    overflow: hidden;
    height: 250px;
}

.project-card__img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

.project-card:hover .project-card__img {
    transform: scale(1.1);
}

.project-card__overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(74, 158, 255, 0.9), rgba(59, 130, 246, 0.9));
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity var(--transition-base);
}

.project-card:hover .project-card__overlay {
    opacity: 1;
}

.project-card__link {
    padding: 0.875rem 2rem;
    background: white;
    color: var(--color-primary);
    border-radius: var(--radius-sm);
    font-weight: 600;
    transform: translateY(20px);
    transition: transform var(--transition-base);
}

.project-card:hover .project-card__link {
    transform: translateY(0);
}

.project-card__content {
    padding: var(--spacing-md);
}

.project-card__title {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
    color: var(--color-text);
}

.project-card__description {
    color: var(--color-text-muted);
    margin-bottom: var(--spacing-sm);
    line-height: 1.7;
}

.project-card__tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-xs);
}

.project-card__tag {
    padding: 0.375rem 0.875rem;
    background: rgba(74, 158, 255, 0.2);
    color: var(--color-accent);
    border-radius: 20px;
    font-size: 0.875rem;
    font-weight: 500;
}

.cursor-trail {
    position: fixed;
    width: 20px;
    height: 20px;
    border: 2px solid var(--color-accent);
    border-radius: 50%;
    pointer-events: none;
    z-index: 5000; /* recomendado para evitar conflitos */
    mix-blend-mode: difference;
}


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

.contact {
    padding: var(--spacing-xl) var(--spacing-md);
    background: var(--color-background);
}

.contact__container {
    max-width: 900px;
    margin: 0 auto;
}

.contact__content {
    display: grid;
    grid-template-columns: 1.5fr 1fr;
    gap: var(--spacing-lg);
    margin-top: var(--spacing-lg);
}

.contact__form-wrapper {
    background: linear-gradient(135deg, rgba(24, 43, 49, 0.6) 0%, rgba(30, 52, 96, 0.4) 100%);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    border: 1px solid rgba(180, 195, 204, 0.1);
    backdrop-filter: blur(10px);
}

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

.form__label {
    display: block;
    margin-bottom: var(--spacing-xs);
    font-weight: 500;
    color: var(--color-text);
}

.form__input {
    width: 100%;
    padding: 0.875rem;
    background: rgba(244, 254, 254, 0.05);
    border: 1px solid rgba(180, 195, 204, 0.2);
    border-radius: var(--radius-sm);
    color: var(--color-text);
    font-family: inherit;
    font-size: 1rem;
    transition: all var(--transition-base);
}

.form__input:focus {
    outline: none;
    border-color: var(--color-accent);
    background: rgba(244, 254, 254, 0.08);
    box-shadow: 0 0 0 3px rgba(74, 158, 255, 0.1);
}

.form__input::placeholder {
    color: var(--color-text-muted);
}

.form__textarea {
    resize: vertical;
    min-height: 120px;
}

.btn__loader {
    display: inline-flex;
    align-items: center;
}

.form__message {
    margin-top: var(--spacing-sm);
    padding: var(--spacing-sm);
    border-radius: var(--radius-sm);
    font-weight: 500;
    text-align: center;
    opacity: 0;
    transform: translateY(-10px);
    transition: all var(--transition-base);
}

.form__message.show {
    opacity: 1;
    transform: translateY(0);
}

.form__message.success {
    background: rgba(16, 185, 129, 0.2);
    color: var(--color-success);
    border: 1px solid var(--color-success);
}

.form__message.error {
    background: rgba(239, 68, 68, 0.2);
    color: var(--color-error);
    border: 1px solid var(--color-error);
}

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

.contact__links-title {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--color-text);
}

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

.contact__link {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm);
    background: rgba(180, 195, 204, 0.1);
    border-radius: var(--radius-sm);
    border: 1px solid rgba(180, 195, 204, 0.2);
    transition: all var(--transition-base);
}

.contact__link i {
    font-size: 1.25rem;
    color: var(--color-accent);
}

.contact__link:hover {
    background: rgba(74, 158, 255, 0.2);
    border-color: var(--color-accent);
    transform: translateX(5px);
}

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

.footer {
    padding: var(--spacing-md);
    background: var(--color-primary);
    border-top: 1px solid rgba(180, 195, 204, 0.1);
}

.footer__container {
    max-width: 1200px;
    margin: 0 auto;
    text-align: center;
}

.footer__text {
    color: var(--color-text-muted);
}

.cursor-trail {
    z-index: 9999;
    position: fixed;
    width: 20px;
    height: 20px;
    border: 2px solid var(--color-accent);
    border-radius: 50%;
    pointer-events: none;
    mix-blend-mode: multiply;
    opacity: 0.5;
}


/* ================================
   BACK TO TOP BUTTON
   ================================ */

.back-to-top {
    position: fixed;
    bottom: var(--spacing-md);
    right: var(--spacing-md);
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, var(--color-accent) 0%, #3b82f6 100%);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    box-shadow: var(--shadow-md);
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: all var(--transition-base);
    z-index: var(--z-back-to-top);
}

.back-to-top.show {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.back-to-top:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-glow);
}

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

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

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

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

@keyframes float {
    0%, 100% {
        transform: translate(0, 0);
    }
    50% {
        transform: translate(30px, -30px);
    }
}

@keyframes pulse {
    0%, 100% {
        opacity: 0.3;
        transform: translate(-50%, -50%) scale(1);
    }
    50% {
        opacity: 0.5;
        transform: translate(-50%, -50%) scale(1.1);
    }
}

@keyframes scrollLine {
    0% {
        height: 0;
    }
    50% {
        height: 60px;
    }
    100% {
        height: 0;
    }
}

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

@media (max-width: 968px) {
    :root {
        --spacing-lg: 3rem;
        --spacing-xl: 4rem;
    }
    
    .hero__content {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }
    
    .hero__title {
        font-size: 2.5rem;
    }
    
    .hero__image {
        order: -1;
    }
    
    .about__content {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }
    
    .contact__content {
        grid-template-columns: 1fr;
    }
    
    .projects__grid {
        grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    }
}

@media (max-width: 768px) {
    .nav__menu {
        position: fixed;
        top: 0;
        right: -100%;
        width: 70%;
        height: 100vh;
        background: rgba(24, 43, 49, 0.98);
        backdrop-filter: blur(20px);
        padding: var(--spacing-xl) var(--spacing-md);
        transition: right var(--transition-base);
        box-shadow: var(--shadow-lg);
    }
    
    .nav__menu.active {
        right: 0;
    }
    
    .nav__list {
        flex-direction: column;
        gap: var(--spacing-md);
        align-items: flex-start;
    }
    
    .nav__toggle {
        display: flex;
    }
    
    .hero__title {
        font-size: 2rem;
    }
    
    .section__title {
        font-size: 2rem;
    }
    
    .services__grid {
        grid-template-columns: 1fr;
    }
    
    .projects__grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    :root {
        --spacing-md: 1.5rem;
        --spacing-lg: 2rem;
        --spacing-xl: 3rem;
    }
    
    .hero {
        padding: var(--spacing-lg) var(--spacing-sm);
    }
    
    .hero__title {
        font-size: 1.75rem;
    }
    
    .hero__cta {
        flex-direction: column;
    }
    
    .btn {
        width: 100%;
    }
    
    .section__title {
        font-size: 1.75rem;
    }
}

.menu-mobile {
    position: fixed;
    z-index: 10000; /* maior que o cursor */
    background-color: rgba(0,0,0,0.9); /* exemplo de fundo */
}
.menu-mobile img {
    width: 40px; /* tamanho do cursor */
    height: 40px;
    pointer-events: none; /* para não interferir em cliques */
    transition: transform 0.1s ease; /* suaviza o movimento */
}