/* ===========================
   CSS Variables - Refined Minimalist
   =========================== */
:root {
    /* Pretos com personalidade */
    --color-black: #0A0A0A;
    --color-charcoal: #1A1A1A;

    /* Brancos com calor */
    --color-white: #FEFEFE;
    --color-cream: #F8F8F6;

    /* Cinzas com nuance */
    --color-gray-100: #E8E8E8;
    --color-gray-200: #D0D0D0;
    --color-gray-400: #8A8A8A;
    --color-gray-600: #4A4A4A;
    --color-gray-800: #2A2A2A;

    /* Fonts */
    --font-heading: 'Inter', sans-serif;
    --font-body: 'Spectral', serif;

    /* Spacing - escala dramatica */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 4rem;
    --spacing-xl: 6rem;
    --spacing-xxl: 10rem;

    /* Transitions - sofisticadas */
    --transition-base: all 0.3s ease;
    --transition-slow: all 0.6s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-spring: all 0.5s cubic-bezier(0.34, 1.56, 0.64, 1);
}

/* ===========================
   Reset & Base Styles
   =========================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-body);
    font-size: 18px;
    line-height: 1.8;
    color: var(--color-black);
    background-color: var(--color-white);
    overflow-x: hidden;
}

/* ===========================
   Typography - Refined
   =========================== */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 700;
    letter-spacing: -0.02em;
}

h1 {
    font-size: clamp(3rem, 8vw, 6rem);
    line-height: 1.05;
    letter-spacing: -0.03em;
}

h2 {
    font-size: clamp(2.25rem, 5vw, 3.5rem);
    line-height: 1.2;
    letter-spacing: -0.02em;
}

h3 {
    font-size: clamp(1.5rem, 3vw, 2rem);
    line-height: 1.3;
}

p {
    font-size: 1.125rem;
    line-height: 1.8;
}

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

a:hover {
    color: var(--color-gray-600);
}

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

/* ===========================
   Navigation - Refined
   =========================== */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background-color: var(--color-white);
    z-index: 1000;
    transition: var(--transition-slow);
    border-bottom: 1px solid transparent;
}

.nav.scrolled {
    border-bottom-color: var(--color-gray-100);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 1.5rem var(--spacing-md);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-logo {
    font-family: var(--font-heading);
    font-size: 1rem;
    font-weight: 700;
    letter-spacing: 0.15em;
    text-transform: uppercase;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: var(--spacing-md);
}

.nav-link {
    font-family: var(--font-heading);
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    padding: var(--spacing-xs) 0;
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 0;
    height: 1px;
    background: var(--color-black);
    transition: var(--transition-base);
    transform: translateX(-50%);
}

.nav-link:hover::after,
.nav-link.active::after {
    width: 100%;
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--spacing-xs);
}

.nav-toggle span {
    width: 24px;
    height: 1.5px;
    background-color: var(--color-black);
    transition: var(--transition-base);
}

/* ===========================
   Hero Section - Dramatic
   =========================== */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: var(--spacing-xxl) var(--spacing-md);
    background-color: var(--color-white);
    position: relative;
}

.hero-title {
    margin-bottom: var(--spacing-md);
    color: var(--color-black);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    animation: heroReveal 1s cubic-bezier(0.4, 0, 0.2, 1) forwards;
}

.hero-subtitle {
    font-family: var(--font-heading);
    font-size: clamp(0.875rem, 1.5vw, 1.125rem);
    font-weight: 500;
    letter-spacing: 0.25em;
    text-transform: uppercase;
    color: var(--color-gray-600);
    max-width: 800px;
    margin: 0 auto;
    animation: subtitleReveal 1s cubic-bezier(0.4, 0, 0.2, 1) 0.2s forwards;
    opacity: 0;
}

@keyframes heroReveal {
    from {
        opacity: 0;
        transform: translateY(40px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

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

/* ===========================
   Section Styles
   =========================== */
section {
    padding: var(--spacing-xl) var(--spacing-md);
}

.section-title {
    text-align: center;
    margin-bottom: var(--spacing-lg);
    color: var(--color-black);
}

/* ===========================
   Areas Section
   =========================== */
.areas {
    background-color: var(--color-cream);
}

.area-item {
    padding: var(--spacing-lg) 0;
    max-width: 900px;
    margin: 0 auto;
    border-bottom: 1px solid var(--color-gray-100);
}

.area-item:last-child {
    border-bottom: none;
}

.area-item:nth-child(1) { transition-delay: 0.1s; }
.area-item:nth-child(2) { transition-delay: 0.2s; }
.area-item:nth-child(3) { transition-delay: 0.3s; }

.area-title {
    margin-bottom: var(--spacing-sm);
    color: var(--color-black);
    text-align: center;
    font-weight: 600;
}

.area-description {
    color: var(--color-gray-600);
    text-align: center;
    max-width: 700px;
    margin: 0 auto;
}

/* ===========================
   Team Section
   =========================== */
.team {
    background-color: var(--color-white);
}

.team-member {
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
    padding: var(--spacing-lg) var(--spacing-md);
    border-bottom: 1px solid var(--color-gray-100);
}

.team-member:last-child {
    border-bottom: none;
}

.team-member:nth-child(1) { transition-delay: 0.1s; }
.team-member:nth-child(2) { transition-delay: 0.2s; }
.team-member:nth-child(3) { transition-delay: 0.3s; }
.team-member:nth-child(4) { transition-delay: 0.4s; }

.member-name {
    margin-bottom: var(--spacing-sm);
    color: var(--color-black);
    font-size: 1.75rem;
    font-weight: 600;
    letter-spacing: -0.01em;
}

.member-description {
    color: var(--color-gray-600);
    line-height: 1.8;
    max-width: 600px;
    margin: 0 auto;
}

/* ===========================
   About Section
   =========================== */
.about {
    background-color: var(--color-cream);
    padding: var(--spacing-xl) var(--spacing-md);
}

.about-content {
    max-width: 900px;
    margin: 0 auto;
    text-align: center;
}

.about-text {
    font-size: 1.375rem;
    color: var(--color-gray-600);
    line-height: 1.9;
    text-align: center;
}

/* ===========================
   Tools Section
   =========================== */
.tools {
    background-color: var(--color-white);
}

.tools-grid {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    margin-top: var(--spacing-lg);
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

.tool-item {
    padding: var(--spacing-lg);
    border: 1px solid var(--color-gray-100);
    transition: var(--transition-slow);
    text-align: center;
    background: var(--color-white);
}

.tool-item:hover {
    border-color: var(--color-gray-400);
    transform: translateY(-4px);
    box-shadow: 0 16px 48px rgba(0, 0, 0, 0.08);
}

.tool-item:nth-child(1) { transition-delay: 0.1s; }
.tool-item:nth-child(2) { transition-delay: 0.2s; }
.tool-item:nth-child(3) { transition-delay: 0.3s; }

.tool-title {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-sm);
    font-weight: 600;
}

.tool-link {
    color: var(--color-black);
    transition: var(--transition-base);
    position: relative;
}

.tool-link::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 100%;
    height: 1px;
    background: var(--color-black);
    transform: scaleX(0);
    transition: transform 0.3s ease;
}

.tool-link:hover::after {
    transform: scaleX(1);
}

.tool-description {
    font-size: 1rem;
    color: var(--color-gray-600);
    line-height: 1.7;
}

/* ===========================
   Contact Section
   =========================== */
.contact {
    background-color: var(--color-cream);
}

.contact-grid {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
    margin-top: var(--spacing-lg);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

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

.contact-label {
    font-size: 0.875rem;
    font-weight: 600;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    margin-bottom: var(--spacing-sm);
    color: var(--color-black);
}

.contact-info {
    font-size: 1.125rem;
    color: var(--color-gray-600);
    line-height: 1.7;
}

.contact-link {
    color: var(--color-black);
    position: relative;
    display: inline-block;
}

.contact-link::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 100%;
    height: 1px;
    background: var(--color-black);
    transform: scaleX(1);
    transition: transform 0.3s ease;
}

.contact-link:hover::after {
    transform: scaleX(0);
}

/* ===========================
   Footer
   =========================== */
.footer {
    background-color: var(--color-white);
    padding: var(--spacing-lg) var(--spacing-md);
    text-align: center;
    border-top: 1px solid var(--color-gray-100);
}

.footer-text {
    font-size: 0.875rem;
    color: var(--color-gray-600);
    margin-bottom: var(--spacing-sm);
}

.footer-links {
    display: flex;
    justify-content: center;
    gap: var(--spacing-md);
    flex-wrap: wrap;
}

.footer-link {
    font-family: var(--font-heading);
    font-size: 0.6875rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--color-gray-600);
    transition: var(--transition-base);
}

.footer-link:hover {
    color: var(--color-black);
}

/* ===========================
   Animations - Orchestrated
   =========================== */
.fade-in {
    opacity: 0;
    transform: translateY(40px);
    transition: opacity 0.8s cubic-bezier(0.4, 0, 0.2, 1),
                transform 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

/* ===========================
   Responsive Design
   =========================== */
@media (max-width: 768px) {
    /* Navigation */
    .nav-menu {
        position: fixed;
        top: 72px;
        left: -100%;
        width: 100%;
        flex-direction: column;
        background-color: var(--color-white);
        border-bottom: 1px solid var(--color-gray-100);
        padding: var(--spacing-lg) var(--spacing-md);
        gap: var(--spacing-md);
        transition: var(--transition-slow);
    }

    .nav-menu.active {
        left: 0;
    }

    .nav-link {
        font-size: 0.875rem;
    }

    .nav-toggle {
        display: flex;
    }

    .nav-toggle.active span:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }

    .nav-toggle.active span:nth-child(2) {
        opacity: 0;
    }

    .nav-toggle.active span:nth-child(3) {
        transform: rotate(-45deg) translate(7px, -6px);
    }

    /* Sections */
    section {
        padding: var(--spacing-lg) var(--spacing-sm);
    }

    .hero {
        min-height: 100vh;
        padding: var(--spacing-xl) var(--spacing-sm);
    }

    /* Typography */
    .hero-title {
        font-size: clamp(2.5rem, 10vw, 4rem);
    }

    .hero-subtitle {
        letter-spacing: 0.15em;
    }

    /* Team & Areas */
    .team-member,
    .area-item {
        padding: var(--spacing-md) 0;
    }

    /* Contact */
    .contact-grid {
        gap: var(--spacing-md);
    }

    /* Footer */
    .footer-links {
        gap: var(--spacing-sm);
    }
}

@media (min-width: 769px) and (max-width: 1024px) {
    .container {
        padding: 0 var(--spacing-lg);
    }

    .hero-title {
        font-size: clamp(3rem, 7vw, 5rem);
    }
}

/* ===========================
   Print Styles
   =========================== */
@media print {
    .nav,
    .nav-toggle {
        display: none;
    }

    .hero {
        min-height: auto;
        padding: var(--spacing-lg);
    }

    section {
        padding: var(--spacing-md);
    }

    .fade-in {
        opacity: 1;
        transform: none;
    }
}