/* ==========================================================================
   1. CONFIGURAÇÕES MINIMALISTAS (MONOCHROME ACCENTS)
   ========================================================================== */
:root {
    --bg-principal: #050505; /* Preto absoluto sofisticado */
    --bg-card: rgba(20, 20, 20, 0.4);
    --bg-card-hover: rgba(30, 30, 30, 0.6);
    --border-color: rgba(255, 255, 255, 0.05);
    --border-hover: rgba(255, 255, 255, 0.3);
    
    --texto-principal: #ffffff;
    --texto-secundario: #888888;
    --texto-muted: #444444;
    
    /* Glow Base baseado em Branco Puro com Alta Transparência */
    --accent-glow: radial-gradient(circle, rgba(255, 255, 255, 0.05) 0%, transparent 70%);
    --gradient-glow: linear-gradient(135deg, #ffffff 0%, #333333 100%);
    
    /* Curvas de Animação Fluidas */
    --ease-fluid: cubic-bezier(0.16, 1, 0.3, 1);
    --transition-fast: all 0.2s var(--ease-fluid);
    --transition-slow: all 0.6s var(--ease-fluid);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    scroll-behavior: smooth;
}

body {
    background-color: var(--bg-principal);
    color: var(--texto-principal);
    font-family: 'Inter', sans-serif;
    overflow-x: hidden;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

/* ==========================================================================
   2. FLOW ANIMATIONS & BACKGROUND
   ========================================================================== */
.bg-glow {
    position: fixed;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: 
        radial-gradient(circle at 25% 35%, rgba(255, 255, 255, 0.03) 0%, transparent 40%),
        radial-gradient(circle at 75% 65%, rgba(255, 255, 255, 0.02) 0%, transparent 40%);
    z-index: -1;
    pointer-events: none;
    animation: flowBackground 30s ease-in-out infinite alternate;
}

@keyframes flowBackground {
    0% { transform: translate(0, 0) rotate(0deg) scale(1); }
    50% { transform: translate(3%, -3%) rotate(45deg) scale(1.05); }
    100% { transform: translate(-2%, 2%) rotate(90deg) scale(1); }
}

@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(20px); filter: blur(4px); }
    to { opacity: 1; transform: translateY(0); filter: blur(0); }
}

/* ==========================================================================
   3. MÁXIMO CONTRASTE & 3D INTERACTIVE HOVERS
   ========================================================================== */
.hover3d {
    position: relative;
    transition: var(--transition-slow);
    transform-style: preserve-3d;
    perspective: 1000px;
}

.hover3d::before {
    content: '';
    position: absolute;
    inset: -1px;
    background: transparent;
    border-radius: inherit;
    z-index: -1;
    transition: var(--transition-slow);
    opacity: 0;
}

.hover3d:hover {
    transform: translateY(-6px) rotateX(2deg) rotateY(1deg);
    border-color: var(--border-hover);
    box-shadow: 0 30px 60px rgba(0, 0, 0, 0.8), 0 0 40px rgba(255, 255, 255, 0.02);
}

.hover3d:hover::before {
    opacity: 1;
    background: linear-gradient(135deg, rgba(255,255,255,0.2) 0%, transparent 100%);
    filter: blur(8px);
}

/* Sistema de Botões */
.btn, .btn-primary, .btn-outline {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.75rem 1.5rem;
    font-size: 0.95rem;
    font-weight: 500;
    border-radius: 6px;
    cursor: pointer;
    transition: var(--transition-fast);
    text-decoration: none;
    border: none;
}

.btn {
    background: transparent;
    color: var(--texto-principal);
    border: 1px solid var(--border-color);
}

.btn:hover {
    background: rgba(255, 255, 255, 0.08);
    border-color: var(--texto-principal);
}

.btn-primary {
    background: var(--texto-principal);
    color: var(--bg-principal);
    font-weight: 600;
}

.btn-primary:hover {
    background: #e5e5e5;
    box-shadow: 0 0 25px rgba(255, 255, 255, 0.2);
    transform: translateY(-2px);
}

.btn-primary:disabled {
    background: var(--texto-muted);
    color: var(--texto-secundario);
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
}

.btn-outline {
    background: transparent;
    color: var(--texto-principal);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.btn-outline:hover {
    background: rgba(255, 255, 255, 0.05);
    border-color: var(--texto-principal);
    transform: translateY(-2px);
}

/* Badges Monocromáticas */
.badge {
    display: inline-block;
    font-size: 0.65rem;
    font-weight: 600;
    padding: 0.35rem 0.75rem;
    border-radius: 4px;
    letter-spacing: 0.05em;
    margin-bottom: 1.5rem;
    text-transform: uppercase;
    background: rgba(255, 255, 255, 0.05);
    color: var(--texto-principal);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

/* ==========================================================================
   4. ESTRUTURAS DE LAYOUT (HEADER, HERO, GRID)
   ========================================================================== */
.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem 5%;
    position: sticky;
    top: 0;
    background: rgba(5, 5, 5, 0.7);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-color);
    z-index: 100;
    transition: background 0.3s var(--ease-fluid), border-color 0.3s var(--ease-fluid);
}

.logo {
    font-size: 1.35rem;
    font-weight: 700;
    letter-spacing: -0.04em;
}

.logo span {
    color: var(--texto-secundario);
    font-weight: 300;
}

.header nav a {
    color: var(--texto-secundario);
    text-decoration: none;
    margin: 0 1.2rem;
    font-size: 0.9rem;
    transition: var(--transition-fast);
    position: relative;
}

.header nav a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 1px;
    background: var(--texto-principal);
    transition: var(--transition-fast);
}

.header nav a:hover {
    color: var(--texto-principal);
}

.header nav a:hover::after {
    width: 100%;
}

/* Hero Section */
.hero {
    max-width: 900px;
    margin: 0 auto;
    padding: 11rem 2rem 7rem 2rem;
    text-align: center;
    animation: fadeInUp 1.2s var(--ease-fluid) forwards;
}

.hero h1 {
    font-size: 4.25rem;
    font-weight: 700;
    line-height: 1.1;
    letter-spacing: -0.05em;
    margin-bottom: 1.75rem;
    background: linear-gradient(180deg, #ffffff 50%, rgba(255, 255, 255, 0.3) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero p {
    font-size: 1.15rem;
    color: var(--texto-secundario);
    margin-bottom: 3rem;
    max-width: 550px;
    margin-left: auto;
    margin-right: auto;
}

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

/* Stats Section */
.stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
    max-width: 1100px;
    margin: 0 auto 7rem auto;
    padding: 0 2rem;
}

.stats .card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 2.5rem 2rem;
    text-align: center;
    backdrop-filter: blur(12px);
}

.stat-number {
    display: block;
    font-size: 3rem;
    font-weight: 600;
    letter-spacing: -0.04em;
    color: var(--texto-principal);
    margin-bottom: 0.25rem;
}

.stats .card p {
    color: var(--texto-muted);
    font-size: 0.8rem;
    font-weight: 600;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

/* ==========================================================================
   5. SECTIONS, CARDS & ICONS
   ========================================================================== */
.section {
    max-width: 1100px;
    margin: 0 auto 9rem auto;
    padding: 0 2rem;
}

.title {
    font-size: 1.6rem;
    font-weight: 600;
    margin-bottom: 2.5rem;
    letter-spacing: -0.03em;
    color: var(--texto-principal);
}

/* Grid de Categorias */
.grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
    gap: 1.25rem;
}

.grid .item {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 1.75rem 1.5rem;
    text-align: center;
    font-weight: 500;
    font-size: 0.9rem;
    cursor: pointer;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.75rem;
    backdrop-filter: blur(8px);
}

.grid .item:hover {
    background: var(--bg-card-hover);
    border-color: var(--border-hover);
}

.grid .item svg {
    width: 22px;
    height: 22px;
    stroke: var(--texto-secundario);
    transition: var(--transition-fast);
}

.grid .item:hover svg {
    stroke: var(--texto-principal);
    transform: scale(1.1) translateY(-2px);
}

/* Grid de Cards de Prompts */
.grid-cards {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 2rem;
}

.prompt {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 14px;
    padding: 2.5rem;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    backdrop-filter: blur(12px);
}

.prompt h3 {
    font-size: 1.3rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    letter-spacing: -0.02em;
}

.prompt p {
    color: var(--texto-secundario);
    font-size: 0.95rem;
    margin-bottom: 2.5rem;
    flex-grow: 1;
}

.prompt .btn-primary, .prompt .btn-outline {
    width: 100%;
}

.free-card {
    max-width: 550px;
    margin: 0 auto;
}

/* ==========================================================================
   6. CTA & FOOTER
   ========================================================================== */
.cta {
    background: radial-gradient(circle at 50% 50%, rgba(255, 255, 255, 0.02) 0%, transparent 60%), var(--bg-card);
    border-top: 1px solid var(--border-color);
    border-bottom: 1px solid var(--border-color);
    text-align: center;
    padding: 8rem 2rem;
    margin-bottom: 4rem;
}

.cta h2 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    letter-spacing: -0.04em;
}

.cta p {
    color: var(--texto-secundario);
    margin-bottom: 2.5rem;
    font-size: 1.05rem;
    max-width: 480px;
    margin-left: auto;
    margin-right: auto;
}

.footer {
    text-align: center;
    padding: 3rem 2rem;
    color: var(--texto-muted);
    font-size: 0.8rem;
    letter-spacing: 0.03em;
    border-top: 1px solid var(--border-color);
}

/* ==========================================================================
   7. FORMULÁRIOS INTERNOS (CHECKOUT, LOGIN & REGISTRO)
   ========================================================================== */
.modal-title {
    font-size: 1.5rem;
    font-weight: 600;
    letter-spacing: -0.03em;
    margin-bottom: 0.5rem;
    color: var(--texto-principal);
    width: 100%;
    text-align: left;
}

.modal-subtitle {
    font-size: 0.9rem;
    color: var(--texto-secundario);
    margin-bottom: 2rem;
    width: 100%;
    text-align: left;
}

.input-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    margin-bottom: 1.25rem;
    width: 100%;
    text-align: left;
}

.input-group label {
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--texto-secundario);
    letter-spacing: 0.02em;
}

.input-group input {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border-color);
    color: var(--texto-principal);
    padding: 0.8rem 1rem;
    font-size: 0.95rem;
    border-radius: 6px;
    font-family: inherit;
    transition: var(--transition-fast);
    width: 100%;
}

.input-group input:focus {
    outline: none;
    background: rgba(255, 255, 255, 0.06);
    border-color: rgba(255, 255, 255, 0.4);
    box-shadow: 0 0 15px rgba(255, 255, 255, 0.03);
}

.input-group input::placeholder {
    color: rgba(255, 255, 255, 0.2);
}

/* Elementos Exclusivos do Checkout Pix */
.qrcode-container {
    display: flex;
    align-items: center;
    justify-content: center;
    background: #ffffff;
    padding: 1rem;
    border-radius: 8px;
    width: 200px;
    height: 200px;
    margin: 0 auto 2rem auto;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
}

/* Área de segurança oculta / Biblioteca de Membros */
textarea {
    width: 100%;
    height: 100px;
    background: rgba(0, 0, 0, 0.3);
    border: 1px solid var(--border-color);
    color: var(--texto-secundario);
    border-radius: 6px;
    padding: 0.75rem;
    font-family: monospace;
    font-size: 0.85rem;
    resize: none;
    margin-bottom: 1rem;
}

/* ==========================================================================
   8. RESPONSIVIDADE
   ========================================================================== */
@media (max-width: 768px) {
    .header nav { display: none; }
    .hero { padding: 8rem 1.5rem 5rem 1.5rem; }
    .hero h1 { font-size: 2.75rem; }
    .stats { grid-template-columns: 1fr; gap: 1rem; }
    .grid-cards { grid-template-columns: 1fr; }
    .hero .actions { flex-direction: column; gap: 0.75rem; }
    .cta h2 { font-size: 2rem; }
    
    .prompt { padding: 1.75rem; }
    .modal-title { font-size: 1.35rem; }
}