/* ========================================
   LISSI DESIGN - LANDING PAGE
   Design System & Styles
   ======================================== */

/* ========================================
   CSS CUSTOM PROPERTIES (DESIGN TOKENS)
   ======================================== */

:root {
    /* Colors - Paleta Dourada e Neutros */
    --color-primary: #C9A961;          /* Dourado principal */
    --color-primary-dark: #B08D48;     /* Dourado escuro */
    --color-primary-light: #E5D4A8;    /* Dourado claro */

    --color-secondary: #D4A574;        /* Terracota suave */
    --color-accent: #8B9A8B;           /* Verde sálvia */

    --color-neutral-100: #FAFAF8;      /* Off-white */
    --color-neutral-200: #F5F5F0;      /* Bege muito claro */
    --color-neutral-300: #E8E6E0;      /* Bege claro */
    --color-neutral-400: #C9C5BA;      /* Cinza bege */
    --color-neutral-500: #8F8B82;      /* Cinza médio */
    --color-neutral-600: #605D56;      /* Cinza escuro */
    --color-neutral-700: #3D3B36;      /* Quase preto */
    --color-neutral-800: #2A2826;      /* Preto suave */

    --color-white: #FFFFFF;
    --color-black: #1A1917;

    /* Typography */
    --font-serif: 'Cormorant Garamond', serif;
    --font-sans: 'Inter', sans-serif;

    --font-size-xs: 0.75rem;      /* 12px */
    --font-size-sm: 0.875rem;     /* 14px */
    --font-size-base: 1rem;       /* 16px */
    --font-size-lg: 1.125rem;     /* 18px */
    --font-size-xl: 1.25rem;      /* 20px */
    --font-size-2xl: 1.5rem;      /* 24px */
    --font-size-3xl: 1.875rem;    /* 30px */
    --font-size-4xl: 2.25rem;     /* 36px */
    --font-size-5xl: 3rem;        /* 48px */
    --font-size-6xl: 3.75rem;     /* 60px */

    --font-weight-light: 300;
    --font-weight-normal: 400;
    --font-weight-medium: 500;
    --font-weight-semibold: 600;

    --line-height-tight: 1.2;
    --line-height-normal: 1.5;
    --line-height-relaxed: 1.75;

    /* Spacing */
    --space-xs: 0.5rem;      /* 8px */
    --space-sm: 0.75rem;     /* 12px */
    --space-md: 1rem;        /* 16px */
    --space-lg: 1.5rem;      /* 24px */
    --space-xl: 2rem;        /* 32px */
    --space-2xl: 3rem;       /* 48px */
    --space-3xl: 4rem;       /* 64px */
    --space-4xl: 6rem;       /* 96px */
    --space-5xl: 8rem;       /* 128px */

    /* Layout */
    --container-width: 1200px;
    --container-padding: 1.5rem;

    /* Borders */
    --border-radius-sm: 4px;
    --border-radius-md: 8px;
    --border-radius-lg: 12px;
    --border-radius-xl: 16px;
    --border-radius-full: 9999px;

    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);

    /* Transitions */
    --transition-fast: 150ms ease-in-out;
    --transition-base: 250ms ease-in-out;
    --transition-slow: 350ms ease-in-out;

    /* Z-index */
    --z-dropdown: 1000;
    --z-sticky: 1020;
    --z-fixed: 1030;
    --z-modal-backdrop: 1040;
    --z-modal: 1050;
    --z-popover: 1060;
    --z-tooltip: 1070;
}

/* ========================================
   CSS RESET & BASE STYLES
   ======================================== */

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

html {
    font-size: 16px;
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-sans);
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-normal);
    line-height: var(--line-height-normal);
    color: var(--color-neutral-700);
    background-color: var(--color-neutral-100);
    overflow-x: hidden;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-serif);
    font-weight: var(--font-weight-medium);
    line-height: var(--line-height-tight);
    color: var(--color-neutral-800);
    margin-bottom: var(--space-md);
}

h1 { font-size: var(--font-size-5xl); }
h2 { font-size: var(--font-size-4xl); }
h3 { font-size: var(--font-size-3xl); }
h4 { font-size: var(--font-size-2xl); }
h5 { font-size: var(--font-size-xl); }
h6 { font-size: var(--font-size-lg); }

p {
    margin-bottom: var(--space-md);
}

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

a:hover,
a:focus {
    color: var(--color-primary-dark);
}

a:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

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

ul, ol {
    list-style: none;
}

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

/* ========================================
   UTILITIES
   ======================================== */

.container {
    width: 100%;
    max-width: var(--container-width);
    margin-left: auto;
    margin-right: auto;
    padding-left: var(--container-padding);
    padding-right: var(--container-padding);
}

.section {
    padding-top: var(--space-4xl);
    padding-bottom: var(--space-4xl);
}

.section-label {
    display: inline-block;
    font-family: var(--font-sans);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--color-primary);
    margin-bottom: var(--space-md);
}

.section-title {
    font-size: clamp(var(--font-size-3xl), 5vw, var(--font-size-4xl));
    max-width: 800px;
}

.section-description {
    font-size: var(--font-size-lg);
    color: var(--color-neutral-600);
    max-width: 700px;
    margin-bottom: var(--space-2xl);
}

.section-header {
    text-align: center;
    margin-bottom: var(--space-3xl);
}

.section-header .section-title,
.section-header .section-description {
    margin-left: auto;
    margin-right: auto;
}

.highlight {
    color: var(--color-primary);
    position: relative;
    display: inline-block;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    padding: var(--space-md) var(--space-xl);
    font-family: var(--font-sans);
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-medium);
    text-align: center;
    border-radius: var(--border-radius-full);
    transition: all var(--transition-base);
    cursor: pointer;
    border: 2px solid transparent;
    min-height: 44px; /* Touch-friendly */
    white-space: nowrap;
}

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

.btn-primary:hover,
.btn-primary:focus {
    background-color: var(--color-primary-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
    color: var(--color-white);
}

.btn-primary:active {
    transform: translateY(0);
}

.btn-large {
    padding: var(--space-lg) var(--space-2xl);
    font-size: var(--font-size-lg);
}

.btn-icon {
    width: 20px;
    height: 20px;
    flex-shrink: 0;
}

/* Animations */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInScale {
    from {
        opacity: 0;
        transform: scale(0.9);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

.fade-in {
    opacity: 0;
    animation: fadeIn 0.8s ease-out forwards;
}

.fade-in.visible {
    opacity: 1;
}

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

.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background-color: rgba(250, 250, 248, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--color-neutral-300);
    z-index: var(--z-fixed);
    transition: all var(--transition-base);
}

.header.scrolled {
    box-shadow: var(--shadow-sm);
}

.nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-top: var(--space-md);
    padding-bottom: var(--space-md);
}

.logo {
    font-family: var(--font-serif);
    font-size: var(--font-size-2xl);
    font-weight: var(--font-weight-semibold);
    color: var(--color-neutral-800);
}

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

.nav-menu {
    display: flex;
    align-items: center;
    gap: var(--space-xl);
}

.nav-menu a {
    font-family: var(--font-sans);
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-medium);
    color: var(--color-neutral-700);
    position: relative;
    padding: var(--space-xs) 0;
}

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

.nav-menu a:hover::after,
.nav-menu a:focus::after {
    width: 100%;
}

/* Mobile Menu Toggle */
.menu-toggle {
    display: none;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    width: 44px;
    height: 44px;
    position: relative;
    z-index: var(--z-fixed);
}

.hamburger,
.hamburger::before,
.hamburger::after {
    width: 24px;
    height: 2px;
    background-color: var(--color-neutral-800);
    transition: all var(--transition-base);
}

.hamburger {
    position: relative;
}

.hamburger::before,
.hamburger::after {
    content: '';
    position: absolute;
    left: 0;
}

.hamburger::before {
    top: -8px;
}

.hamburger::after {
    bottom: -8px;
}

.menu-toggle[aria-expanded="true"] .hamburger {
    background-color: transparent;
}

.menu-toggle[aria-expanded="true"] .hamburger::before {
    transform: rotate(45deg);
    top: 0;
}

.menu-toggle[aria-expanded="true"] .hamburger::after {
    transform: rotate(-45deg);
    bottom: 0;
}

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

.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding-top: calc(80px + var(--space-3xl));
    padding-bottom: var(--space-4xl);
    position: relative;
    background: linear-gradient(135deg, var(--color-neutral-100) 0%, var(--color-neutral-200) 100%);
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-3xl);
    align-items: center;
}

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

.hero-title {
    font-size: clamp(var(--font-size-4xl), 7vw, var(--font-size-6xl));
    font-weight: var(--font-weight-semibold);
    margin-bottom: var(--space-lg);
    line-height: 1.1;
}

.hero-subtitle {
    font-size: clamp(var(--font-size-lg), 2vw, var(--font-size-xl));
    color: var(--color-neutral-600);
    margin-bottom: var(--space-2xl);
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

.hero-cta {
    display: flex;
    justify-content: center;
    gap: var(--space-md);
}

.hero-visual {
    display: flex;
    justify-content: center;
    align-items: center;
}

.hero-showcase {
    width: 100%;
    max-width: 600px;
}

.showcase-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-md);
}

.showcase-item {
    aspect-ratio: 1;
    background: var(--color-white);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-lg);
    transition: transform var(--transition-base);
}

.showcase-item:hover {
    transform: scale(1.05);
}

/* Scroll Indicator */
.scroll-indicator {
    position: absolute;
    bottom: var(--space-2xl);
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-xs);
    color: var(--color-neutral-500);
    font-size: var(--font-size-sm);
    animation: bounce 2s infinite;
}

@keyframes bounce {
    0%, 100% {
        transform: translateX(-50%) translateY(0);
    }
    50% {
        transform: translateX(-50%) translateY(-10px);
    }
}

/* ========================================
   SOBRE SECTION
   ======================================== */

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

.sobre-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-3xl);
    align-items: center;
}

.sobre-image {
    position: relative;
}

.image-wrapper {
    position: relative;
    border-radius: var(--border-radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-xl);
}

.image-wrapper::before {
    content: '';
    position: absolute;
    top: -20px;
    left: -20px;
    width: 100%;
    height: 100%;
    border: 2px solid var(--color-primary);
    border-radius: var(--border-radius-xl);
    z-index: -1;
}

.profile-image {
    width: 100%;
    height: auto;
    object-fit: cover;
}

.sobre-content {
    max-width: 600px;
}

.sobre-text p {
    font-size: var(--font-size-lg);
    line-height: var(--line-height-relaxed);
    color: var(--color-neutral-600);
}

.sobre-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    gap: var(--space-xl);
    margin-top: var(--space-2xl);
}

.stat-item {
    text-align: center;
    padding: var(--space-lg);
    background-color: var(--color-neutral-100);
    border-radius: var(--border-radius-lg);
}

.stat-number {
    display: block;
    font-family: var(--font-serif);
    font-size: var(--font-size-4xl);
    font-weight: var(--font-weight-semibold);
    color: var(--color-primary);
    margin-bottom: var(--space-xs);
}

.stat-label {
    display: block;
    font-size: var(--font-size-sm);
    color: var(--color-neutral-600);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

/* ========================================
   PORTFOLIO SECTION
   ======================================== */

.portfolio {
    background-color: var(--color-neutral-100);
}

.portfolio-filters {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--space-sm);
    margin-bottom: var(--space-3xl);
}

.filter-btn {
    padding: var(--space-sm) var(--space-lg);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    color: var(--color-neutral-600);
    background-color: var(--color-white);
    border: 2px solid var(--color-neutral-300);
    border-radius: var(--border-radius-full);
    transition: all var(--transition-base);
}

.filter-btn:hover,
.filter-btn.active {
    color: var(--color-white);
    background-color: var(--color-primary);
    border-color: var(--color-primary);
}

.portfolio-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: var(--space-2xl);
}

.portfolio-item {
    background-color: var(--color-white);
    border-radius: var(--border-radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: all var(--transition-base);
    opacity: 1;
    transform: scale(1);
}

.portfolio-item.hidden {
    display: none;
}

.portfolio-item:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
}

.portfolio-image {
    position: relative;
    aspect-ratio: 4/3;
    overflow: hidden;
    background-color: var(--color-neutral-200);
}

.portfolio-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

.portfolio-item:hover .portfolio-image img {
    transform: scale(1.1);
}

.portfolio-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(201, 169, 97, 0.9);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity var(--transition-base);
}

.portfolio-item:hover .portfolio-overlay {
    opacity: 1;
}

.portfolio-btn {
    padding: var(--space-md) var(--space-xl);
    font-weight: var(--font-weight-medium);
    color: var(--color-white);
    background-color: transparent;
    border: 2px solid var(--color-white);
    border-radius: var(--border-radius-full);
    transition: all var(--transition-base);
}

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

.portfolio-info {
    padding: var(--space-lg);
}

.portfolio-title {
    font-size: var(--font-size-xl);
    margin-bottom: var(--space-xs);
}

.portfolio-category {
    display: inline-block;
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    color: var(--color-primary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: var(--space-sm);
}

.portfolio-description {
    font-size: var(--font-size-base);
    color: var(--color-neutral-600);
    margin-bottom: 0;
}

/* ========================================
   SERVIÇOS SECTION
   ======================================== */

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

.servicos-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--space-2xl);
    margin-bottom: var(--space-3xl);
}

.servico-card {
    padding: var(--space-2xl);
    background-color: var(--color-neutral-100);
    border-radius: var(--border-radius-lg);
    transition: all var(--transition-base);
}

.servico-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.servico-icon {
    width: 64px;
    height: 64px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--color-primary-light);
    border-radius: var(--border-radius-md);
    color: var(--color-primary-dark);
    margin-bottom: var(--space-lg);
}

.servico-title {
    font-size: var(--font-size-xl);
    margin-bottom: var(--space-md);
}

.servico-description {
    font-size: var(--font-size-base);
    color: var(--color-neutral-600);
    line-height: var(--line-height-relaxed);
    margin-bottom: var(--space-lg);
}

.servico-list {
    list-style: none;
}

.servico-list li {
    position: relative;
    padding-left: var(--space-lg);
    margin-bottom: var(--space-sm);
    font-size: var(--font-size-sm);
    color: var(--color-neutral-600);
}

.servico-list li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--color-primary);
    font-weight: var(--font-weight-semibold);
}

.servicos-cta {
    text-align: center;
    margin-top: var(--space-3xl);
}

/* ========================================
   DIFERENCIAIS SECTION
   ======================================== */

.diferenciais {
    background: linear-gradient(135deg, var(--color-neutral-100) 0%, var(--color-neutral-200) 100%);
}

.diferenciais-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--space-2xl);
}

.diferencial-item {
    text-align: center;
    padding: var(--space-xl);
}

.diferencial-icon {
    width: 80px;
    height: 80px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto var(--space-lg);
    background-color: var(--color-white);
    border-radius: var(--border-radius-full);
    color: var(--color-primary);
    box-shadow: var(--shadow-md);
}

.diferencial-title {
    font-size: var(--font-size-xl);
    margin-bottom: var(--space-md);
}

.diferencial-description {
    font-size: var(--font-size-base);
    color: var(--color-neutral-600);
    line-height: var(--line-height-relaxed);
    margin-bottom: 0;
}

/* ========================================
   PROCESSO SECTION
   ======================================== */

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

.processo-timeline {
    max-width: 800px;
    margin: 0 auto;
    position: relative;
}

.processo-timeline::before {
    content: '';
    position: absolute;
    left: 40px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: linear-gradient(to bottom, var(--color-primary), var(--color-primary-light));
}

.processo-step {
    position: relative;
    padding-left: 100px;
    margin-bottom: var(--space-3xl);
}

.processo-step:last-child {
    margin-bottom: 0;
}

.step-number {
    position: absolute;
    left: 0;
    top: 0;
    width: 80px;
    height: 80px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-serif);
    font-size: var(--font-size-3xl);
    font-weight: var(--font-weight-semibold);
    color: var(--color-white);
    background-color: var(--color-primary);
    border-radius: var(--border-radius-full);
    box-shadow: var(--shadow-lg);
}

.step-content {
    background-color: var(--color-neutral-100);
    padding: var(--space-2xl);
    border-radius: var(--border-radius-lg);
}

.step-title {
    font-size: var(--font-size-2xl);
    margin-bottom: var(--space-md);
}

.step-description {
    font-size: var(--font-size-base);
    color: var(--color-neutral-600);
    line-height: var(--line-height-relaxed);
    margin-bottom: 0;
}

/* ========================================
   CTA FINAL SECTION
   ======================================== */

.cta-final {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    color: var(--color-white);
}

.cta-content {
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
}

.cta-title {
    font-size: clamp(var(--font-size-3xl), 5vw, var(--font-size-5xl));
    color: var(--color-white);
    margin-bottom: var(--space-lg);
}

.cta-description {
    font-size: var(--font-size-lg);
    color: rgba(255, 255, 255, 0.9);
    line-height: var(--line-height-relaxed);
    margin-bottom: var(--space-2xl);
}

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

.cta-final .btn-primary:hover {
    background-color: var(--color-neutral-100);
    color: var(--color-primary-dark);
}

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

.footer {
    background-color: var(--color-neutral-800);
    color: var(--color-neutral-300);
    padding: var(--space-3xl) 0 var(--space-xl);
}

.footer-content {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-2xl);
    margin-bottom: var(--space-2xl);
}

.footer-brand {
    text-align: center;
}

.footer-logo {
    font-family: var(--font-serif);
    font-size: var(--font-size-2xl);
    font-weight: var(--font-weight-semibold);
    color: var(--color-white);
    display: block;
    margin-bottom: var(--space-xs);
}

.footer-tagline {
    font-size: var(--font-size-sm);
    color: var(--color-neutral-400);
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--space-2xl);
}

.footer-col {
    text-align: center;
}

.footer-title {
    font-family: var(--font-sans);
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-semibold);
    color: var(--color-white);
    margin-bottom: var(--space-md);
}

.footer-menu li,
.footer-social li {
    margin-bottom: var(--space-sm);
}

.footer-menu a,
.footer-social a {
    color: var(--color-neutral-400);
    font-size: var(--font-size-sm);
    transition: color var(--transition-base);
    display: inline-flex;
    align-items: center;
    gap: var(--space-xs);
}

.footer-menu a:hover,
.footer-social a:hover {
    color: var(--color-primary);
}

.footer-bottom {
    padding-top: var(--space-xl);
    border-top: 1px solid var(--color-neutral-700);
    text-align: center;
}

.footer-copyright {
    font-size: var(--font-size-sm);
    color: var(--color-neutral-500);
    margin: 0;
}

/* ========================================
   WHATSAPP FLOATING BUTTON
   ======================================== */

.whatsapp-float {
    position: fixed;
    bottom: var(--space-xl);
    right: var(--space-xl);
    width: 60px;
    height: 60px;
    background-color: #25D366;
    border-radius: var(--border-radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-xl);
    z-index: var(--z-fixed);
    transition: all var(--transition-base);
    color: var(--color-white);
}

.whatsapp-float:hover {
    transform: scale(1.1);
    box-shadow: 0 8px 16px rgba(37, 211, 102, 0.4);
    color: var(--color-white);
}

/* ========================================
   MODAL
   ======================================== */

.modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: var(--z-modal);
    display: none;
    align-items: center;
    justify-content: center;
    padding: var(--space-lg);
}

.modal.active {
    display: flex;
}

.modal-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(4px);
    cursor: pointer;
    z-index: var(--z-modal-backdrop);
}

.modal-container {
    position: relative;
    max-width: 1000px;
    width: 100%;
    max-height: 90vh;
    background-color: var(--color-white);
    border-radius: var(--border-radius-xl);
    overflow: hidden;
    z-index: var(--z-modal);
    animation: fadeInScale 0.3s ease-out;
}

.modal-close {
    position: absolute;
    top: var(--space-lg);
    right: var(--space-lg);
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--color-white);
    border-radius: var(--border-radius-full);
    box-shadow: var(--shadow-md);
    z-index: 10;
    transition: all var(--transition-base);
}

.modal-close:hover {
    background-color: var(--color-neutral-100);
    transform: rotate(90deg);
}

.modal-content {
    max-height: 90vh;
    overflow-y: auto;
}

.modal-image {
    position: relative;
    width: 100%;
    aspect-ratio: 16/9;
    background-color: var(--color-neutral-200);
}

.modal-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.modal-info {
    padding: var(--space-2xl);
}

.modal-title {
    font-size: var(--font-size-3xl);
    margin-bottom: var(--space-xs);
}

.modal-category {
    display: inline-block;
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    color: var(--color-primary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: var(--space-lg);
}

.modal-description {
    font-size: var(--font-size-lg);
    color: var(--color-neutral-600);
    line-height: var(--line-height-relaxed);
    margin-bottom: var(--space-2xl);
}

.modal-details h3 {
    font-size: var(--font-size-xl);
    margin-top: var(--space-xl);
    margin-bottom: var(--space-md);
}

.modal-details p {
    color: var(--color-neutral-600);
    line-height: var(--line-height-relaxed);
}

.modal-details ul {
    list-style: disc;
    padding-left: var(--space-xl);
}

.modal-details li {
    color: var(--color-neutral-600);
    margin-bottom: var(--space-sm);
}

/* ========================================
   RESPONSIVE DESIGN - MOBILE FIRST
   ======================================== */

/* Tablets (768px and up) */
@media (min-width: 768px) {
    :root {
        --container-padding: 2rem;
        --space-4xl: 8rem;
        --space-5xl: 10rem;
    }

    .hero-content {
        grid-template-columns: 1fr 1fr;
    }

    .hero-text {
        text-align: left;
    }

    .hero-cta {
        justify-content: flex-start;
    }

    .sobre-grid {
        grid-template-columns: 1fr 1fr;
    }

    .footer-content {
        grid-template-columns: 1fr 2fr;
    }

    .footer-brand,
    .footer-col {
        text-align: left;
    }

    .processo-timeline::before {
        left: 50%;
        transform: translateX(-1px);
    }

    .processo-step {
        padding-left: 0;
        padding-right: calc(50% + 60px);
    }

    .processo-step:nth-child(even) {
        padding-right: 0;
        padding-left: calc(50% + 60px);
    }

    .step-number {
        left: 50%;
        transform: translateX(-50%);
    }

    .processo-step:nth-child(even) .step-content {
        text-align: left;
    }
}

/* Desktops (1024px and up) */
@media (min-width: 1024px) {
    .portfolio-grid {
        grid-template-columns: repeat(3, 1fr);
    }

    .servicos-grid {
        grid-template-columns: repeat(3, 1fr);
    }

    .diferenciais-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

/* Mobile Menu (below 768px) */
@media (max-width: 767px) {
    .menu-toggle {
        display: flex;
    }

    .nav-menu {
        position: fixed;
        top: 0;
        right: -100%;
        width: 80%;
        max-width: 320px;
        height: 100vh;
        background-color: var(--color-white);
        box-shadow: var(--shadow-xl);
        flex-direction: column;
        align-items: flex-start;
        padding: var(--space-4xl) var(--space-2xl);
        transition: right var(--transition-slow);
        z-index: calc(var(--z-fixed) - 1);
    }

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

    .nav-menu a {
        font-size: var(--font-size-lg);
        padding: var(--space-md) 0;
        width: 100%;
    }

    .hero {
        min-height: auto;
        padding-top: calc(80px + var(--space-2xl));
    }

    .scroll-indicator {
        display: none;
    }
}

/* Print Styles */
@media print {
    .header,
    .whatsapp-float,
    .modal,
    .scroll-indicator {
        display: none !important;
    }

    .section {
        page-break-inside: avoid;
    }
}