/* ============================================
   Madeira Creative House — Refined Design System
   ============================================ */

:root {
    --color-bg: #0a0a0a;
    --color-bg-elevated: #0f0f0f;
    --color-bg-subtle: #161616;
    --color-bg-card: #111111;
    --color-text: #f0f0f0;
    --color-text-secondary: #8a8a8a;
    --color-text-muted: #555555;
    --color-accent: #b8704e;
    --color-accent-hover: #c98060;
    --color-accent-subtle: rgba(184, 112, 78, 0.08);
    --color-border: #1e1e1e;
    --color-border-light: #2a2a2a;
    --color-white: #ffffff;

    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-size-xs: 0.6875rem;
    --font-size-sm: 0.8125rem;
    --font-size-base: 0.9375rem;
    --font-size-lg: 1.0625rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 1.875rem;
    --font-size-4xl: 2.25rem;
    --font-size-5xl: 3rem;
    --font-size-6xl: 3.75rem;

    --space-xs: 0.25rem;
    --space-sm: 0.5rem;
    --space-md: 0.75rem;
    --space-lg: 1.25rem;
    --space-xl: 1.75rem;
    --space-2xl: 2.5rem;
    --space-3xl: 3.5rem;
    --space-4xl: 5rem;
    --space-5xl: 7rem;
    --space-6xl: 9rem;

    --container-max: 1280px;
    --container-padding: 1.5rem;
    --header-height: 72px;

    --transition-fast: 200ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base: 300ms cubic-bezier(0.4, 0, 0.2, 1);

    --z-header: 100;
    --z-mobile-nav: 99;
}

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

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeLegibility;
}

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

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

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

ul, ol {
    list-style: none;
}

h1, h2, h3, h4, h5, h6 {
    font-weight: 500;
    line-height: 1.1;
    letter-spacing: -0.025em;
    color: var(--color-text);
}

p {
    color: var(--color-text-secondary);
    line-height: 1.65;
}

.section-label {
    font-size: var(--font-size-xs);
    font-weight: 500;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--color-accent);
    margin-bottom: var(--space-xl);
}

.section-title {
    font-size: var(--font-size-4xl);
    font-weight: 500;
    line-height: 1.08;
    letter-spacing: -0.03em;
    color: var(--color-text);
}

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

/* --- Buttons --- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-family);
    font-size: var(--font-size-sm);
    font-weight: 500;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    padding: 0.875rem 1.75rem;
    border: none;
    cursor: pointer;
    transition: all var(--transition-base);
    text-decoration: none;
}

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

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

.btn-secondary {
    background-color: transparent;
    color: var(--color-text-secondary);
    border: 1px solid var(--color-border-light);
}

.btn-secondary:hover {
    color: var(--color-text);
    border-color: var(--color-text-muted);
}

.btn-large {
    padding: 1rem 2.5rem;
    font-size: var(--font-size-sm);
}

.btn-full {
    width: 100%;
}

/* --- Header --- */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: var(--z-header);
    height: var(--header-height);
    transition: background-color var(--transition-base);
}

.header.scrolled {
    background-color: rgba(10, 10, 10, 0.92);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
}

.header-inner {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--container-padding);
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.header-logo {
    display: flex;
    align-items: center;
}

.logo-svg {
    display: block;
}

.footer-logo {
    opacity: 0.6;
    transition: opacity var(--transition-fast);
}

.footer-brand:hover .footer-logo {
    opacity: 0.9;
}

.header-nav {
    display: none;
}

.nav-list {
    display: flex;
    align-items: center;
    gap: var(--space-2xl);
}

.nav-list a {
    font-size: var(--font-size-sm);
    font-weight: 400;
    letter-spacing: 0.01em;
    color: var(--color-text-secondary);
    transition: color var(--transition-fast);
}

.nav-list a:hover {
    color: var(--color-text);
}

.nav-cta {
    font-weight: 500 !important;
    color: var(--color-text) !important;
}

.nav-cta::after {
    content: '';
    display: block;
    width: 100%;
    height: 1px;
    background-color: var(--color-accent);
    transform: scaleX(0);
    transform-origin: right;
    transition: transform var(--transition-base);
}

.nav-cta:hover::after {
    transform: scaleX(1);
    transform-origin: left;
}

.header-toggle {
    display: flex;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--space-sm);
    z-index: calc(var(--z-mobile-nav) + 1);
}

.toggle-line {
    display: block;
    width: 22px;
    height: 1px;
    background-color: var(--color-text);
    transition: all var(--transition-base);
    transform-origin: center;
}

.header-toggle[aria-expanded="true"] .toggle-line:first-child {
    transform: rotate(45deg) translate(4px, 4px);
}

.header-toggle[aria-expanded="true"] .toggle-line:last-child {
    transform: rotate(-45deg) translate(4px, -4px);
}

/* --- Mobile Nav --- */
.mobile-nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: var(--z-mobile-nav);
    background-color: var(--color-bg);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-base);
}

.mobile-nav.active {
    opacity: 1;
    visibility: visible;
}

.mobile-nav-list {
    text-align: center;
}

.mobile-nav-list li {
    margin-bottom: var(--space-xl);
}

.mobile-nav-list a {
    font-size: var(--font-size-3xl);
    font-weight: 400;
    color: var(--color-text);
    transition: color var(--transition-fast);
}

.mobile-nav-list a:hover {
    color: var(--color-accent);
}

/* --- Hero --- */
.hero {
    position: relative;
    min-height: 100vh;
    min-height: 100dvh;
    display: flex;
    align-items: flex-end;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    inset: 0;
    z-index: 1;
}

.hero-bg img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center 30%;
    filter: grayscale(30%) contrast(1.05);
}

.hero-overlay {
    position: absolute;
    inset: 0;
    z-index: 2;
    background: linear-gradient(
        180deg,
        rgba(10, 10, 10, 0.55) 0%,
        rgba(10, 10, 10, 0.75) 40%,
        rgba(10, 10, 10, 0.92) 100%
    );
}

.hero-content {
    position: relative;
    z-index: 3;
    width: 100%;
    padding: 0 var(--container-padding) var(--space-5xl);
}

.hero-inner {
    max-width: 720px;
}

.hero-label {
    font-size: var(--font-size-xs);
    font-weight: 500;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--color-accent);
    margin-bottom: var(--space-lg);
}

.hero-title {
    font-size: var(--font-size-5xl);
    font-weight: 500;
    line-height: 1.05;
    letter-spacing: -0.035em;
    color: var(--color-white);
    margin-bottom: var(--space-lg);
}

.hero-subtitle {
    font-size: var(--font-size-lg);
    line-height: 1.6;
    color: var(--color-text-secondary);
    max-width: 540px;
    margin-bottom: var(--space-2xl);
}

.hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-md);
    align-items: center;
}

/* --- About --- */
.about {
    padding: var(--space-5xl) 0 var(--space-6xl);
    background-color: var(--color-bg);
}

.about-grid {
    display: grid;
    gap: var(--space-3xl);
    align-items: start;
}

.about-content {
    max-width: 560px;
}

.about-content .section-title {
    margin-bottom: var(--space-xl);
}

.about-text p {
    margin-bottom: var(--space-md);
    font-size: var(--font-size-base);
    line-height: 1.7;
}

.about-text p:last-child {
    margin-bottom: 0;
}

.about-image {
    position: relative;
    overflow: hidden;
}

.about-image img {
    width: 100%;
    height: auto;
}

/* --- Services --- */
.services {
    padding: var(--space-6xl) 0;
    background-color: var(--color-bg-elevated);
}

.services-header {
    margin-bottom: var(--space-4xl);
    max-width: 480px;
}

.services-grid {
    display: grid;
    gap: 1px;
    background-color: var(--color-border);
}

.service-card {
    background-color: var(--color-bg-elevated);
    padding: var(--space-2xl);
}

.service-number {
    font-size: var(--font-size-xs);
    font-weight: 500;
    letter-spacing: 0.1em;
    color: var(--color-text-muted);
    margin-bottom: var(--space-lg);
}

.service-title {
    font-size: var(--font-size-xl);
    font-weight: 500;
    color: var(--color-text);
    margin-bottom: var(--space-md);
    line-height: 1.15;
}

.service-intro {
    font-size: var(--font-size-sm);
    font-weight: 400;
    color: var(--color-accent);
    margin-bottom: var(--space-lg);
    line-height: 1.5;
}

.service-text {
    font-size: var(--font-size-sm);
    line-height: 1.65;
    margin-bottom: var(--space-md);
    color: var(--color-text-secondary);
}

.service-text:last-of-type {
    margin-bottom: var(--space-lg);
}

.service-note {
    font-size: var(--font-size-xs);
    font-style: italic;
    color: var(--color-text-muted);
    margin-bottom: var(--space-lg);
    line-height: 1.5;
}

.service-benefits,
.service-list {
    margin-bottom: var(--space-xl);
}

.service-benefits li,
.service-list li {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    padding: var(--space-sm) 0;
    border-bottom: 1px solid var(--color-border);
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.service-benefits li::before,
.service-list li::before {
    content: '';
    width: 3px;
    height: 3px;
    background-color: var(--color-accent);
    border-radius: 50%;
    flex-shrink: 0;
}

.service-cta {
    display: inline-flex;
    align-items: center;
    font-size: var(--font-size-xs);
    font-weight: 500;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--color-text-secondary);
    padding-bottom: 2px;
    border-bottom: 1px solid var(--color-border-light);
    transition: all var(--transition-fast);
}

.service-cta:hover {
    color: var(--color-accent);
    border-color: var(--color-accent);
}

/* --- Use Cases --- */
.use-cases {
    padding: var(--space-6xl) 0;
    background-color: var(--color-bg);
}

.use-cases-header {
    margin-bottom: var(--space-3xl);
}

.use-cases-intro {
    font-size: var(--font-size-base);
    color: var(--color-text-secondary);
    max-width: 520px;
    margin-top: var(--space-md);
    line-height: 1.65;
}

.use-cases-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 0;
    border-top: 1px solid var(--color-border);
    margin-bottom: var(--space-3xl);
}

.use-case-item {
    display: flex;
    align-items: baseline;
    gap: var(--space-lg);
    padding: var(--space-lg) 0;
    border-bottom: 1px solid var(--color-border);
    transition: color var(--transition-fast);
}

.use-case-item:hover {
    color: var(--color-accent);
}

.use-case-item:hover .use-case-number {
    color: var(--color-accent);
}

.use-case-number {
    font-size: var(--font-size-xs);
    font-weight: 400;
    letter-spacing: 0.05em;
    color: var(--color-text-muted);
    min-width: 28px;
    transition: color var(--transition-fast);
}

.use-case-name {
    font-size: var(--font-size-base);
    font-weight: 400;
}

.use-cases-closing {
    font-size: var(--font-size-base);
    line-height: 1.7;
    color: var(--color-text-secondary);
    max-width: 600px;
}

/* --- Why --- */
.why {
    padding: var(--space-6xl) 0;
    background-color: var(--color-bg-elevated);
}

.why-grid {
    display: grid;
    gap: var(--space-3xl);
}

.why-content .section-title {
    max-width: 440px;
}

.why-text {
    font-size: var(--font-size-base);
    line-height: 1.7;
    margin-bottom: var(--space-lg);
}

.why-text:last-of-type {
    margin-bottom: var(--space-xl);
}

.why-list {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-sm);
}

.why-list li {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    padding: var(--space-sm) 0;
    padding-left: var(--space-lg);
    position: relative;
}

.why-list li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0.7em;
    width: 4px;
    height: 4px;
    background-color: var(--color-accent);
    border-radius: 50%;
}

/* --- CTA Band --- */
.cta-band {
    padding: var(--space-5xl) 0;
    background-color: var(--color-bg);
    border-top: 1px solid var(--color-border);
}

.cta-band-content {
    text-align: center;
    max-width: 560px;
    margin: 0 auto;
}

.cta-band-title {
    font-size: var(--font-size-3xl);
    font-weight: 500;
    color: var(--color-text);
    margin-bottom: var(--space-2xl);
    line-height: 1.15;
    letter-spacing: -0.02em;
}

/* --- Contact --- */
.contact {
    padding: var(--space-6xl) 0;
    background-color: var(--color-bg-elevated);
}

.contact-grid {
    display: grid;
    gap: var(--space-4xl);
}

.contact-info .section-title {
    margin-bottom: var(--space-lg);
}

.contact-text {
    font-size: var(--font-size-base);
    line-height: 1.7;
    margin-bottom: var(--space-md);
}

.contact-methods {
    margin: var(--space-2xl) 0 var(--space-xl);
}

.contact-method {
    display: flex;
    align-items: center;
    gap: var(--space-lg);
    padding: var(--space-xl);
    background-color: var(--color-bg);
    border: 1px solid var(--color-border);
    transition: all var(--transition-base);
}

.contact-method:hover {
    border-color: var(--color-border-light);
}

.contact-method svg {
    width: 28px;
    height: 28px;
    color: #25D366;
    flex-shrink: 0;
}

.contact-method-label {
    display: block;
    font-size: var(--font-size-xs);
    font-weight: 500;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--color-text-muted);
    margin-bottom: 2px;
}

.contact-method-value {
    display: block;
    font-size: var(--font-size-lg);
    font-weight: 400;
    color: var(--color-text);
}

.contact-note {
    font-size: var(--font-size-xs);
    color: var(--color-text-muted);
    line-height: 1.5;
}

/* --- Contact Form --- */
.contact-form-wrapper {
    background-color: var(--color-bg);
    border: 1px solid var(--color-border);
    padding: var(--space-2xl);
}

.form-title {
    font-size: var(--font-size-lg);
    font-weight: 500;
    color: var(--color-text);
    margin-bottom: var(--space-xs);
    letter-spacing: -0.01em;
}

.form-subtitle {
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
    margin-bottom: var(--space-2xl);
    line-height: 1.5;
}

.form-row {
    display: grid;
    gap: var(--space-lg);
    margin-bottom: var(--space-lg);
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.form-group label {
    font-size: var(--font-size-xs);
    font-weight: 500;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    color: var(--color-text-secondary);
}

.required {
    color: var(--color-accent);
}

.form-group input,
.form-group select,
.form-group textarea {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    padding: 0.75rem 0.875rem;
    background-color: var(--color-bg-elevated);
    border: 1px solid var(--color-border);
    color: var(--color-text);
    transition: border-color var(--transition-fast);
    outline: none;
    border-radius: 0;
    -webkit-appearance: none;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    border-color: var(--color-accent);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: var(--color-text-muted);
}

.form-group select {
    cursor: pointer;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6' viewBox='0 0 10 6'%3E%3Cpath d='M1 1l4 4 4-4' fill='none' stroke='%23555' stroke-width='1.2' stroke-linecap='round'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 0.875rem center;
    padding-right: 2.25rem;
}

.form-group textarea {
    resize: vertical;
    min-height: 100px;
}

.form-privacy {
    font-size: var(--font-size-xs);
    color: var(--color-text-muted);
    margin-bottom: var(--space-lg);
    line-height: 1.5;
}

.form-status {
    margin-top: var(--space-md);
    font-size: var(--font-size-sm);
    min-height: 1.5em;
}

.form-status.success {
    color: #4ade80;
}

.form-status.error {
    color: #f87171;
}

/* --- Footer --- */
.footer {
    padding: var(--space-4xl) 0 var(--space-2xl);
    background-color: var(--color-bg);
    border-top: 1px solid var(--color-border);
}

.footer-grid {
    display: grid;
    gap: var(--space-3xl);
    margin-bottom: var(--space-3xl);
}

.footer-brand {
    display: flex;
    flex-direction: column;
}

.footer-description {
    font-size: var(--font-size-sm);
    line-height: 1.65;
    color: var(--color-text-muted);
    max-width: 280px;
}

.footer-heading {
    font-size: var(--font-size-xs);
    font-weight: 500;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--color-text-secondary);
    margin-bottom: var(--space-lg);
}

.footer-links ul li {
    margin-bottom: var(--space-sm);
}

.footer-links a {
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
    transition: color var(--transition-fast);
}

.footer-links a:hover {
    color: var(--color-text);
}

.footer-address {
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
    line-height: 1.6;
    margin-bottom: var(--space-lg);
}

.footer-whatsapp {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    font-size: var(--font-size-sm);
    color: #25D366;
    margin-bottom: var(--space-lg);
    transition: opacity var(--transition-fast);
}

.footer-whatsapp:hover {
    opacity: 0.8;
}

.footer-microcopy {
    font-size: var(--font-size-xs);
    color: var(--color-text-muted);
    line-height: 1.5;
}

.footer-bottom {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    align-items: center;
    gap: var(--space-md);
    padding-top: var(--space-xl);
    border-top: 1px solid var(--color-border);
}

.footer-bottom p {
    font-size: var(--font-size-xs);
    color: var(--color-text-muted);
}

.footer-bottom a {
    font-size: var(--font-size-xs);
    color: var(--color-text-muted);
    transition: color var(--transition-fast);
}

.footer-bottom a:hover {
    color: var(--color-text);
}

/* --- Tablet (768px+) --- */
@media (min-width: 768px) {
    :root {
        --container-padding: 2.5rem;
    }

    .section-title {
        font-size: var(--font-size-5xl);
    }

    .header-toggle {
        display: none;
    }

    .header-nav {
        display: block;
    }

    .hero-title {
        font-size: var(--font-size-6xl);
    }

    .about-grid {
        grid-template-columns: 1fr 1fr;
        gap: var(--space-4xl);
    }

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

    .use-cases-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .why-grid {
        grid-template-columns: 1fr 1fr;
        gap: var(--space-4xl);
    }

    .why-list {
        grid-template-columns: 1fr 1fr;
    }

    .contact-grid {
        grid-template-columns: 1fr 1.1fr;
        gap: var(--space-4xl);
    }

    .footer-grid {
        grid-template-columns: 1.5fr 1fr 1fr;
    }
}

/* --- Desktop (1024px+) --- */
@media (min-width: 1024px) {
    :root {
        --container-padding: 3.5rem;
    }

    .hero-content {
        padding: 0 var(--container-padding) var(--space-6xl);
    }

    .hero-inner {
        max-width: 800px;
    }
}

/* --- Large Desktop (1280px+) --- */
@media (min-width: 1280px) {
    .hero-inner {
        max-width: 860px;
    }
}

/* --- Reduced Motion --- */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }

    html {
        scroll-behavior: auto;
    }
}

/* --- Selection --- */
::selection {
    background-color: var(--color-accent);
    color: var(--color-white);
}