/* ========================================
   WS Company - Design System
   ======================================== */

/* CSS Variables */
:root {
    /* Colors */
    --color-black: #0A0A0A;
    --color-white: #FFFFFF;
    --color-gray-100: #F5F5F5;
    --color-gray-200: #E5E5E5;
    --color-gray-400: #999999;
    --color-gray-600: #666666;
    --color-gray-800: #333333;

    /* Typography */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-size-base: 18px;
    --font-size-sm: 16px;
    --font-size-lg: 20px;
    --font-size-xl: 24px;
    --font-size-2xl: 32px;
    --font-size-3xl: 40px;
    --font-size-4xl: 48px;

    /* Spacing */
    --spacing-xs: 8px;
    --spacing-sm: 16px;
    --spacing-md: 24px;
    --spacing-lg: 32px;
    --spacing-xl: 48px;
    --spacing-2xl: 64px;
    --spacing-3xl: 96px;
    --spacing-4xl: 128px;

    /* Layout */
    --container-max: 800px;
    --header-height: 80px;

    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-base: 0.2s ease;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    line-height: 1.7;
    color: var(--color-black);
    background-color: var(--color-white);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Container */
.container {
    width: 100%;
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

/* Typography */
h1, h2, h3 {
    font-weight: 700;
    line-height: 1.2;
    letter-spacing: -0.02em;
}

h1 {
    font-size: var(--font-size-3xl);
    margin-bottom: var(--spacing-md);
}

h2 {
    font-size: var(--font-size-2xl);
    margin-bottom: var(--spacing-lg);
}

p {
    margin-bottom: var(--spacing-sm);
}

p:last-child {
    margin-bottom: 0;
}

.text-muted {
    color: var(--color-gray-600);
}

.text-light {
    color: var(--color-gray-400);
}

/* ========================================
   Header
   ======================================== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--header-height);
    background: var(--color-white);
    border-bottom: 1px solid var(--color-gray-200);
    z-index: 100;
}

.header-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
    max-width: 1200px;
}

.logo {
    display: flex;
    align-items: center;
    padding: 8px 0;
}

.logo img {
    height: 52px;
    width: auto;
}

/* ========================================
   Buttons
   ======================================== */
.btn {
    display: inline-block;
    font-family: var(--font-family);
    font-size: var(--font-size-sm);
    font-weight: 500;
    text-decoration: none;
    padding: 12px 24px;
    border-radius: 6px;
    transition: all var(--transition-base);
    cursor: pointer;
    border: none;
}

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

.btn-primary:hover {
    background: var(--color-gray-800);
}

.btn-header {
    background: var(--color-black);
    color: var(--color-white);
    padding: 10px 18px;
    font-size: 13px;
}

.btn-header:hover {
    background: var(--color-gray-800);
}

.btn-large {
    padding: 16px 32px;
    font-size: var(--font-size-base);
}

/* ========================================
   Sections
   ======================================== */
.section {
    padding: var(--spacing-3xl) 0;
}

.section-dark {
    background: var(--color-black);
    color: var(--color-white);
}

/* Bloco "Não somos ERP" - destaque controlado */
.section-highlight {
    background: #151515;
    color: var(--color-white);
    padding: var(--spacing-4xl) 0;
}

.section-highlight .content-block p {
    color: var(--color-gray-400);
}

.section-light {
    background: var(--color-gray-100);
}

.section-cta {
    text-align: center;
    padding: var(--spacing-4xl) 0;
}

/* Divisor recorrente entre seções */
.section-divider {
    display: flex;
    justify-content: center;
    padding: 0 var(--spacing-md);
}

.section-divider::before {
    content: '';
    width: 60%;
    max-width: 480px;
    height: 1px;
    background: var(--color-gray-200);
}

/* ========================================
   Hero
   ======================================== */
.hero {
    padding-top: calc(var(--header-height) + var(--spacing-4xl));
    padding-bottom: var(--spacing-3xl);
    min-height: 90vh;
    display: flex;
    align-items: center;
    position: relative;
    background-color: var(--color-white);
}

/* Hero sem textura - fundo limpo */
.hero::before {
    display: none;
}

.hero .container {
    position: relative;
    z-index: 1;
    max-width: 900px;
}

.hero h1 {
    font-size: var(--font-size-4xl);
}

.hero-subtitle {
    font-size: var(--font-size-xl);
    color: var(--color-gray-600);
    margin-bottom: var(--spacing-lg);
}

.hero-tagline {
    font-size: var(--font-size-xl);
    font-weight: 500;
    color: var(--color-gray-600);
    margin-bottom: var(--spacing-lg);
    letter-spacing: 0.02em;
}

.hero-description {
    font-size: var(--font-size-lg);
    color: var(--color-gray-600);
    margin-bottom: var(--spacing-xl);
    max-width: 700px;
}

/* ========================================
   Cards "O que fazemos"
   ======================================== */
.section-cards {
    padding: var(--spacing-2xl) 0;
    background: var(--color-gray-100);
}

.section-cards .container {
    max-width: 1000px;
}

.cards-title {
    font-size: 14px;
    font-weight: 600;
    text-align: center;
    margin-bottom: 40px;
    color: var(--color-gray-600);
    text-transform: uppercase;
    letter-spacing: 0.12em;
}

.cards-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}

.card-item {
    text-align: left;
    padding: 32px 28px;
    background: var(--color-white);
    border: 1px solid var(--color-gray-200);
    border-radius: 6px;
    transition: border-color var(--transition-base);
}

.card-item:hover {
    border-color: var(--color-gray-400);
}

.card-item.primary {
    border-color: var(--color-black);
}

.card-item strong {
    display: block;
    font-size: 18px;
    font-weight: 700;
    color: var(--color-black);
    margin-bottom: 8px;
}

.card-item span {
    font-size: 15px;
    color: var(--color-gray-600);
    line-height: 1.4;
}

/* ========================================
   Content Blocks
   ======================================== */
.content-block {
    max-width: 650px;
}

.content-block p {
    font-size: var(--font-size-base);
    color: var(--color-gray-600);
}

.section-dark .content-block p {
    color: var(--color-gray-400);
}

.highlight {
    font-size: var(--font-size-lg);
    font-weight: 500;
    color: var(--color-black);
    margin-top: var(--spacing-lg);
    padding-left: var(--spacing-md);
    border-left: 3px solid var(--color-black);
}

.highlight-light {
    font-size: var(--font-size-lg);
    font-weight: 500;
    color: var(--color-white);
    margin-top: var(--spacing-lg);
    padding-left: var(--spacing-md);
    border-left: 3px solid var(--color-white);
}

/* ========================================
   Lists
   ======================================== */
.feature-list,
.criteria-list {
    list-style: none;
    margin: var(--spacing-lg) 0;
}

.feature-list li,
.criteria-list li {
    position: relative;
    padding-left: var(--spacing-md);
    margin-bottom: var(--spacing-sm);
    color: var(--color-gray-600);
}

.feature-list li::before,
.criteria-list li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 10px;
    width: 6px;
    height: 6px;
    background: var(--color-black);
    border-radius: 50%;
}

.section-light .feature-list li {
    color: var(--color-gray-800);
}

.criteria-list li {
    font-size: var(--font-size-lg);
    color: var(--color-black);
    margin-bottom: var(--spacing-md);
}

/* ========================================
   Diagrama do Método - Leitura horizontal
   ======================================== */
.method-diagram {
    display: flex;
    align-items: center;
    gap: 20px;
    margin-top: var(--spacing-xl);
    flex-wrap: wrap;
    padding-left: 16px;
    border-left: 3px solid var(--color-black);
}

.method-step {
    font-size: 22px;
    font-weight: 500;
    color: var(--color-black);
    white-space: nowrap;
}

.method-step.emphasis {
    font-weight: 700;
}

.method-arrow {
    font-size: 20px;
    color: var(--color-gray-400);
}

/* ========================================
   Quadro de Responsabilidade IA
   ======================================== */
.responsibility-box {
    margin-top: var(--spacing-xl);
    padding: var(--spacing-lg);
    border: 1px solid var(--color-gray-800);
    background: var(--color-white);
}

.responsibility-box__title {
    font-size: 12px;
    font-weight: 600;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--color-gray-600);
    margin-bottom: var(--spacing-md);
}

.responsibility-box p {
    color: var(--color-gray-800);
    font-size: var(--font-size-sm);
    margin-bottom: var(--spacing-xs);
}

/* ========================================
   Filter Note
   ======================================== */
.filter-note {
    margin-top: var(--spacing-xl);
    padding: var(--spacing-md);
    background: var(--color-gray-100);
    border-radius: 8px;
    font-size: var(--font-size-sm);
    color: var(--color-gray-600);
}

/* ========================================
   CTA Section
   ======================================== */
.cta-subtitle {
    font-size: var(--font-size-xl);
    color: var(--color-gray-600);
    margin-bottom: var(--spacing-lg);
}

.cta-note {
    margin-top: var(--spacing-md);
    font-size: var(--font-size-sm);
    color: var(--color-gray-400);
}

/* ========================================
   Footer
   ======================================== */
.footer {
    padding: var(--spacing-xl) 0;
    border-top: 1px solid var(--color-gray-200);
    text-align: center;
    position: relative;
    background-color: var(--color-white);
}

/* Textura sutil no footer (coesão com Hero) */
.footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image:
        linear-gradient(rgba(10, 10, 10, 0.02) 1px, transparent 1px),
        linear-gradient(90deg, rgba(10, 10, 10, 0.02) 1px, transparent 1px);
    background-size: 40px 40px;
    pointer-events: none;
    z-index: 0;
}

.footer .container {
    position: relative;
    z-index: 1;
}

.footer-logo {
    height: 44px;
    width: auto;
    margin-bottom: var(--spacing-md);
    opacity: 0.8;
}

.footer p {
    font-size: var(--font-size-sm);
    color: var(--color-gray-400);
}

.footer-linkedin {
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-gray-400);
    opacity: 0.6;
    transition: opacity var(--transition-base);
    margin-bottom: var(--spacing-sm);
}

.footer-linkedin:hover {
    opacity: 1;
}

/* ========================================
   Responsive
   ======================================== */
@media (max-width: 768px) {
    :root {
        --font-size-4xl: 36px;
        --font-size-3xl: 30px;
        --font-size-2xl: 26px;
        --font-size-xl: 20px;
        --spacing-3xl: 64px;
        --spacing-4xl: 80px;
    }

    .header-content {
        padding: 0 var(--spacing-sm);
    }

    .logo img {
        height: 48px;
    }

    .btn-header {
        padding: 8px 14px;
        font-size: 12px;
    }

    .footer-logo {
        height: 40px;
    }

    .hero {
        min-height: auto;
        padding-top: calc(var(--header-height) + var(--spacing-2xl));
        padding-bottom: var(--spacing-2xl);
    }

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

    .section-cta {
        padding: var(--spacing-3xl) 0;
    }

    h2 br {
        display: none;
    }

    /* Cards responsivo tablet */
    .cards-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }

    .card-item {
        padding: 28px 24px;
    }

    .card-item span {
        font-size: 14px;
    }

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

@media (max-width: 600px) {
    /* Method-diagram vira lista no mobile */
    .method-diagram {
        flex-direction: column;
        align-items: flex-start;
        gap: 12px;
    }

    .method-arrow {
        display: none;
    }

    .method-step {
        font-size: 18px;
    }
}

@media (max-width: 480px) {
    :root {
        --font-size-4xl: 26px;
        --font-size-3xl: 24px;
        --font-size-2xl: 22px;
        --font-size-base: 16px;
    }

    .container {
        padding: 0 var(--spacing-sm);
    }

    .logo img {
        height: 38px;
    }

    .footer-logo {
        height: 32px;
    }

    .btn-large {
        width: 100%;
        text-align: center;
    }

    /* Hero mobile - slogan visível sem scroll */
    .hero h1 {
        line-height: 1.3;
    }

    .hero-tagline {
        font-size: 16px;
        margin-bottom: var(--spacing-sm);
    }

    .hero-description {
        font-size: 15px;
    }

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

    .cta-note {
        font-size: 13px;
    }
}