/* ==========================================================================
   RODRIGO WILLEN — PURE BLACK & LIGHT EDITORIAL DESIGN SYSTEM
   Baseado em https://rodrigowillen.com.br/
   ========================================================================== */

/* --- VARIÁVEIS DE TEMA & DESIGN TOKENS --- */
:root {
    /* Fontes Oficiais */
    --font-display: 'Space Grotesk', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    --font-body: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    --font-mono: 'JetBrains Mono', "SF Mono", Monaco, Consolas, monospace;
    
    --transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
    --radius-xs: 4px;
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    
    color-scheme: light dark;
}

/* TEMA ESCURO (Pure Black OLED — Padrão do Portfólio) */
:root[data-theme="dark"],
:root:has(> head > meta[name="color-scheme"][content="dark"]) {
    color-scheme: dark;
    --canvas: #000000;
    --surface-1: #09090b;
    --surface-2: #121215;
    --surface-3: #18181b;
    --border-subtle: #1c1c20;
    --border-medium: #27272a;
    --border-highlight: #3f3f46;
    --border-focus: #ffffff;
    --text-primary: #ffffff;
    --text-secondary: #a1a1aa;
    --text-muted: #71717a;
    --status-online: #10b981;
    --accent: #ffffff;
    --accent-contrast: #000000;
    --card-shadow: 0 4px 20px rgba(0, 0, 0, 0.7);
    --header-bg: rgba(0, 0, 0, 0.88);
    --code-bg: #09090b;
    --badge-bg: #18181b;
}

/* TEMA CLARO (Clean Technical Minimalist) */
:root[data-theme="light"],
:root:has(> head > meta[name="color-scheme"][content="light"]) {
    color-scheme: light;
    --canvas: #fafafa;
    --surface-1: #ffffff;
    --surface-2: #f4f4f5;
    --surface-3: #e4e4e7;
    --border-subtle: #e4e4e7;
    --border-medium: #d4d4d8;
    --border-highlight: #a1a1aa;
    --border-focus: #09090b;
    --text-primary: #09090b;
    --text-secondary: #52525b;
    --text-muted: #71717a;
    --status-online: #059669;
    --accent: #09090b;
    --accent-contrast: #ffffff;
    --card-shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
    --header-bg: rgba(250, 250, 250, 0.88);
    --code-bg: #f4f4f5;
    --badge-bg: #f4f4f5;
}

/* TEMA SISTEMA (Respeita a preferência do sistema operacional) */
@media (prefers-color-scheme: dark) {
    :root[data-theme="system"],
    :root:not([data-theme]) {
        color-scheme: dark;
        --canvas: #000000;
        --surface-1: #09090b;
        --surface-2: #121215;
        --surface-3: #18181b;
        --border-subtle: #1c1c20;
        --border-medium: #27272a;
        --border-highlight: #3f3f46;
        --border-focus: #ffffff;
        --text-primary: #ffffff;
        --text-secondary: #a1a1aa;
        --text-muted: #71717a;
        --status-online: #10b981;
        --accent: #ffffff;
        --accent-contrast: #000000;
        --card-shadow: 0 4px 20px rgba(0, 0, 0, 0.7);
        --header-bg: rgba(0, 0, 0, 0.88);
        --code-bg: #09090b;
        --badge-bg: #18181b;
    }
}

@media (prefers-color-scheme: light) {
    :root[data-theme="system"],
    :root:not([data-theme]) {
        color-scheme: light;
        --canvas: #fafafa;
        --surface-1: #ffffff;
        --surface-2: #f4f4f5;
        --surface-3: #e4e4e7;
        --border-subtle: #e4e4e7;
        --border-medium: #d4d4d8;
        --border-highlight: #a1a1aa;
        --border-focus: #09090b;
        --text-primary: #09090b;
        --text-secondary: #52525b;
        --text-muted: #71717a;
        --status-online: #059669;
        --accent: #09090b;
        --accent-contrast: #ffffff;
        --card-shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
        --header-bg: rgba(250, 250, 250, 0.88);
        --code-bg: #f4f4f5;
        --badge-bg: #f4f4f5;
    }
}

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
    background-color: var(--canvas);
    color: var(--text-primary);
    transition: background-color 0.25s ease, color 0.25s ease;
}

body {
    font-family: var(--font-body);
    background-color: var(--canvas);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

::selection {
    background: var(--text-primary);
    color: var(--canvas);
}

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

/* HAIRLINE GRID (Inspirado no Portfólio) */
.grid-canvas {
    position: fixed;
    inset: 0;
    pointer-events: none;
    z-index: 0;
    background-image: 
        linear-gradient(to right, var(--border-subtle) 1px, transparent 1px),
        linear-gradient(to bottom, var(--border-subtle) 1px, transparent 1px);
    background-size: 80px 80px;
    opacity: 0.35;
    mask-image: radial-gradient(circle at center, black 40%, transparent 85%);
    -webkit-mask-image: radial-gradient(circle at center, black 40%, transparent 85%);
}

.container {
    width: 100%;
    max-width: 1140px;
    margin: 0 auto;
    padding: 0 1.5rem;
    position: relative;
    z-index: 1;
}

/* TIPOGRAFIA */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-display);
    font-weight: 700;
    color: var(--text-primary);
    letter-spacing: -0.02em;
    line-height: 1.25;
}

h1 { font-size: clamp(2rem, 4vw, 3rem); }
h2 { font-size: clamp(1.5rem, 3vw, 2rem); }
h3 { font-size: 1.35rem; }
h4 { font-size: 1.15rem; }

p {
    color: var(--text-secondary);
    font-size: 0.98rem;
    line-height: 1.65;
}

code, pre, .font-mono {
    font-family: var(--font-mono);
}

/* HEADER EDITORIAL & GLASSMORPHISM */
.site-header {
    position: sticky;
    top: 0;
    left: 0;
    width: 100%;
    height: 72px;
    background: var(--header-bg);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--border-subtle);
    z-index: 1000;
    transition: var(--transition);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
}

.brand-wrapper {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.brand-monogram {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 34px;
    height: 34px;
    background: var(--surface-2);
    border: 1px solid var(--border-medium);
    border-radius: var(--radius-xs);
    font-family: var(--font-mono);
    font-weight: 700;
    font-size: 0.9rem;
    color: var(--text-primary);
}

.brand-title {
    font-family: var(--font-mono);
    font-weight: 700;
    font-size: 0.95rem;
    letter-spacing: 0.5px;
    color: var(--text-primary);
}

.brand-sub {
    font-size: 0.7rem;
    color: var(--text-muted);
    font-family: var(--font-mono);
    margin-left: 4px;
}

.status-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-family: var(--font-mono);
    font-size: 0.7rem;
    color: var(--text-secondary);
    background: var(--surface-2);
    border: 1px solid var(--border-subtle);
    padding: 3px 8px;
    border-radius: 9999px;
}

.status-dot {
    width: 7px;
    height: 7px;
    border-radius: 50%;
    background: var(--status-online);
    box-shadow: 0 0 8px var(--status-online);
    animation: pulse 2.5s infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.4; transform: scale(0.9); }
}

/* NAVEGAÇÃO */
.nav-links {
    display: flex;
    align-items: center;
    gap: 1.75rem;
}

.nav-link {
    font-family: var(--font-mono);
    font-size: 0.82rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.8px;
    display: flex;
    align-items: center;
    gap: 4px;
    transition: var(--transition);
}

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

.nav-link:hover,
.nav-link.active {
    color: var(--text-primary);
}

/* SELETOR DE TEMAS (Claro / Escuro / Sistema) */
.theme-selector {
    display: inline-flex;
    align-items: center;
    background: var(--surface-2);
    border: 1px solid var(--border-medium);
    border-radius: 9999px;
    padding: 3px;
    gap: 2px;
}

.theme-btn {
    background: transparent;
    border: none;
    cursor: pointer;
    color: var(--text-muted);
    font-size: 0.82rem;
    width: 28px;
    height: 28px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}

.theme-btn:hover {
    color: var(--text-primary);
}

.theme-btn.active {
    background: var(--surface-1);
    color: var(--text-primary);
    box-shadow: 0 1px 4px rgba(0, 0, 0, 0.15);
}

/* BOTÕES */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    font-family: var(--font-mono);
    font-size: 0.85rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.6px;
    padding: 0.65rem 1.25rem;
    border-radius: var(--radius-xs);
    cursor: pointer;
    transition: var(--transition);
    border: 1px solid transparent;
}

.btn-primary {
    background: var(--text-primary);
    color: var(--canvas) !important;
    border-color: var(--text-primary);
}

.btn-primary:hover {
    background: transparent;
    color: var(--text-primary) !important;
    box-shadow: 0 0 16px rgba(255, 255, 255, 0.12);
}

.btn-secondary {
    background: var(--surface-2);
    color: var(--text-primary);
    border-color: var(--border-medium);
}

.btn-secondary:hover {
    background: var(--surface-3);
    border-color: var(--border-highlight);
    color: var(--text-primary);
}

.btn-outline {
    background: transparent;
    color: var(--text-primary);
    border-color: var(--border-medium);
}

.btn-outline:hover {
    border-color: var(--text-primary);
    background: var(--surface-2);
}

.btn-danger {
    background: rgba(239, 68, 68, 0.1);
    color: #ef4444;
    border-color: rgba(239, 68, 68, 0.3);
}

.btn-danger:hover {
    background: #ef4444;
    color: #ffffff !important;
}

/* CARDS */
.card {
    background: var(--surface-1);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-sm);
    padding: 1.75rem;
    margin-bottom: 1.5rem;
    box-shadow: var(--card-shadow);
    transition: var(--transition);
}

.card:hover {
    border-color: var(--border-medium);
}

.card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-bottom: 1rem;
    margin-bottom: 1rem;
    border-bottom: 1px solid var(--border-subtle);
}

.card-title {
    font-family: var(--font-display);
    font-size: 1.25rem;
    font-weight: 700;
}

/* SEÇÃO HERO */
.hero {
    padding: 5rem 0 3.5rem;
    text-align: center;
    position: relative;
    border-bottom: 1px solid var(--border-subtle);
}

.hero-tagline {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--status-online);
    text-transform: uppercase;
    letter-spacing: 2px;
    margin-bottom: 1rem;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: var(--surface-2);
    border: 1px solid var(--border-medium);
    padding: 4px 12px;
    border-radius: 9999px;
}

.hero-title {
    margin-bottom: 1.25rem;
}

.hero-desc {
    max-width: 680px;
    margin: 0 auto 2.25rem;
    font-size: 1.15rem;
}

.hero-actions {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    flex-wrap: wrap;
}

/* FORMULÁRIOS */
.form-group {
    margin-bottom: 1.25rem;
}

.form-label {
    display: block;
    font-family: var(--font-mono);
    font-size: 0.78rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
}

.form-input,
.form-textarea {
    width: 100%;
    padding: 0.75rem 1rem;
    background: var(--surface-2);
    border: 1px solid var(--border-medium);
    border-radius: var(--radius-xs);
    color: var(--text-primary);
    font-family: var(--font-body);
    font-size: 0.95rem;
    transition: var(--transition);
}

.form-input:focus,
.form-textarea:focus {
    outline: none;
    border-color: var(--border-focus);
    background: var(--surface-1);
    box-shadow: 0 0 0 1px var(--border-focus);
}

/* TERMINAL & CODE BLOCKS */
.terminal-card {
    background: var(--code-bg);
    border: 1px solid var(--border-medium);
    border-radius: var(--radius-sm);
    overflow: hidden;
    margin: 1.5rem 0;
}

.terminal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.6rem 1rem;
    background: var(--surface-2);
    border-bottom: 1px solid var(--border-subtle);
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--text-muted);
}

.terminal-controls {
    display: flex;
    gap: 6px;
}

.terminal-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--border-highlight);
}

.terminal-body {
    padding: 1.25rem;
    font-family: var(--font-mono);
    font-size: 0.85rem;
    line-height: 1.6;
    overflow-x: auto;
    color: var(--text-primary);
}

/* GRID DE PLANOS & SERVIÇOS */
.grid-2 {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
}

.grid-3 {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
}

.plan-card {
    background: var(--surface-1);
    border: 1px solid var(--border-medium);
    border-radius: var(--radius-sm);
    padding: 2rem;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    transition: var(--transition);
}

.plan-card:hover {
    border-color: var(--text-primary);
    transform: translateY(-2px);
}

.plan-card.featured {
    border-color: var(--status-online);
    position: relative;
}

.plan-badge {
    position: absolute;
    top: -10px;
    right: 20px;
    background: var(--status-online);
    color: #000000;
    font-family: var(--font-mono);
    font-size: 0.65rem;
    font-weight: 700;
    padding: 2px 8px;
    border-radius: 9999px;
    text-transform: uppercase;
}

.plan-price {
    font-family: var(--font-display);
    font-size: 2rem;
    font-weight: 700;
    color: var(--text-primary);
    margin: 1rem 0;
}

.plan-features {
    list-style: none;
    margin: 1.5rem 0;
    padding: 0;
}

.plan-features li {
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-bottom: 0.6rem;
    display: flex;
    align-items: center;
    gap: 8px;
}

.plan-features li i {
    color: var(--status-online);
    font-size: 0.8rem;
}

/* LISTA DE TOKENS */
.token-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem;
    background: var(--surface-2);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-xs);
    margin-bottom: 0.75rem;
}

.token-meta {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.token-desc {
    font-weight: 600;
    font-size: 0.95rem;
    color: var(--text-primary);
}

.token-date {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--text-muted);
}

/* FOOTER EDITORIAL */
.site-footer {
    margin-top: auto;
    background: var(--surface-1);
    border-top: 1px solid var(--border-subtle);
    padding: 2.5rem 0 2rem;
    font-size: 0.85rem;
}

.footer-grid {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 1.5rem;
}

.footer-meta {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    font-family: var(--font-mono);
    font-size: 0.78rem;
    color: var(--text-secondary);
}

.footer-links {
    display: flex;
    gap: 1.25rem;
    font-family: var(--font-mono);
    font-size: 0.78rem;
}

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

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

/* RESPONSIVIDADE */
.hamburger-btn {
    display: none;
    background: transparent;
    border: 1px solid var(--border-medium);
    color: var(--text-primary);
    width: 36px;
    height: 36px;
    border-radius: var(--radius-xs);
    cursor: pointer;
    font-size: 1.1rem;
}

@media (max-width: 868px) {
    .hamburger-btn {
        display: flex;
        align-items: center;
        justify-content: center;
    }

    .nav-links {
        display: none;
        position: absolute;
        top: 72px;
        left: 0;
        right: 0;
        background: var(--surface-1);
        border-bottom: 1px solid var(--border-medium);
        flex-direction: column;
        padding: 1.5rem;
        gap: 1.25rem;
        box-shadow: 0 10px 25px rgba(0,0,0,0.4);
    }

    .nav-links.is-open {
        display: flex;
    }

    .footer-grid {
        flex-direction: column;
        text-align: center;
        gap: 1rem;
    }

    .footer-meta {
        flex-direction: column;
        gap: 0.5rem;
    }
}