/* Reset e Definições de Base */
:root {
    /* Paleta de cores inspirada em café (HSL para controle preciso) */
    --color-primary: hsl(28, 45%, 25%);       /* Marrom Café Expresso */
    --color-primary-light: hsl(28, 45%, 35%); /* Marrom Médio */
    --color-secondary: hsl(35, 60%, 55%);     /* Caramelo Macchiato */
    --color-accent: hsl(28, 60%, 45%);        /* Latte / Avelã */
    --color-bg-grad-1: hsl(30, 30%, 95%);     /* Creme Claro */
    --color-bg-grad-2: hsl(30, 20%, 85%);     /* Areia Suave */
    --color-card-bg: rgba(255, 255, 255, 0.75);
    --color-card-border: rgba(255, 255, 255, 0.5);
    
    --color-text-dark: hsl(28, 50%, 15%);
    --color-text-muted: hsl(28, 20%, 40%);
    --color-success: hsl(140, 40%, 35%);
    --color-success-bg: hsl(140, 45%, 93%);
    --color-error: hsl(5, 75%, 45%);
    
    --font-heading: 'Playfair Display', Georgia, serif;
    --font-body: 'Outfit', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    
    --transition-smooth: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
    --transition-quick: all 0.2s ease;
}

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

body {
    font-family: var(--font-body);
    background: linear-gradient(135deg, var(--color-bg-grad-1) 0%, var(--color-bg-grad-2) 100%);
    color: var(--color-text-dark);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow-x: hidden;
    position: relative;
    padding: 20px;
}

/* Background Decorativo Dinâmico */
.background-decor {
    position: absolute;
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
    z-index: 0;
    overflow: hidden;
    pointer-events: none;
}

.blob {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.25;
    animation: float-slow 12s infinite alternate ease-in-out;
}

.blob-1 {
    width: 400px;
    height: 400px;
    background-color: var(--color-secondary);
    top: -100px;
    right: -100px;
}

.blob-2 {
    width: 500px;
    height: 500px;
    background-color: var(--color-accent);
    bottom: -150px;
    left: -150px;
    animation-delay: 2s;
}

@keyframes float-slow {
    0% { transform: translate(0, 0) scale(1); }
    100% { transform: translate(40px, 30px) scale(1.15); }
}

/* Container e Card Principal (Glassmorphism) */
.container {
    width: 100%;
    max-width: 480px;
    z-index: 1;
}

.card {
    background: var(--color-card-bg);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--color-card-border);
    border-radius: 28px;
    padding: 40px 32px;
    box-shadow: 0 20px 40px rgba(43, 29, 14, 0.08), 
                0 1px 3px rgba(43, 29, 14, 0.04);
    text-align: center;
    transition: var(--transition-smooth);
}

@media (max-width: 400px) {
    .card {
        padding: 32px 20px;
    }
}

/* Logo e Identidade */
.logo-area {
    margin-bottom: 32px;
}

.icon-coffee {
    font-size: 3rem;
    display: inline-block;
    margin-bottom: 12px;
    filter: drop-shadow(0 4px 6px rgba(0,0,0,0.06));
    animation: steam 3s infinite alternate ease-in-out;
}

@keyframes steam {
    0% { transform: translateY(0) rotate(0deg); }
    50% { transform: translateY(-4px) rotate(1deg); }
    100% { transform: translateY(0) rotate(-1deg); }
}

.brand-title {
    font-family: var(--font-heading);
    font-size: 2.2rem;
    font-weight: 700;
    color: var(--color-primary);
    line-height: 1.2;
    margin-bottom: 6px;
}

.brand-subtitle {
    font-size: 0.95rem;
    color: var(--color-text-muted);
    font-weight: 400;
    letter-spacing: 0.5px;
}

/* Estados da UI (Transição) */
.state-content {
    transition: opacity 0.5s ease, transform 0.5s ease;
    opacity: 0;
    transform: translateY(15px);
}

.state-content.active {
    opacity: 1;
    transform: translateY(0);
}

.state-content.hidden {
    display: none;
}

/* Estado 1: Inscrição */
.cta-description {
    font-size: 1.05rem;
    line-height: 1.6;
    color: var(--color-text-dark);
    margin-bottom: 32px;
    font-weight: 350;
}

#subscribe-form {
    margin-bottom: 28px;
}

.input-wrapper {
    display: flex;
    flex-direction: column;
    gap: 12px;
    position: relative;
}

input[type="email"] {
    width: 100%;
    padding: 16px 20px;
    border-radius: 16px;
    border: 1.5px solid hsl(28, 20%, 80%);
    background: rgba(255, 255, 255, 0.9);
    font-family: var(--font-body);
    font-size: 1rem;
    color: var(--color-text-dark);
    outline: none;
    transition: var(--transition-quick);
}

input[type="email"]:focus {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 4px rgba(62, 39, 18, 0.1);
    background: #ffffff;
}

button[type="submit"] {
    width: 100%;
    padding: 16px 24px;
    border: none;
    border-radius: 16px;
    background: var(--color-primary);
    color: #ffffff;
    font-family: var(--font-body);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition-quick);
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 12px rgba(62, 39, 18, 0.2);
}

button[type="submit"]:hover {
    background: var(--color-primary-light);
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(62, 39, 18, 0.3);
}

button[type="submit"]:active {
    transform: translateY(0);
}

button[type="submit"]:disabled {
    opacity: 0.8;
    cursor: not-allowed;
    transform: none;
}

/* Spinner de Carregamento */
.spinner {
    width: 20px;
    height: 20px;
    border: 2.5px solid rgba(255,255,255,0.3);
    border-top-color: #ffffff;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
    position: absolute;
}

.btn-text.hidden {
    visibility: hidden;
    opacity: 0;
}

.spinner.hidden {
    display: none;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* Mensagem de Erro */
.error-msg {
    color: var(--color-error);
    font-size: 0.85rem;
    margin-top: 8px;
    text-align: left;
    padding-left: 6px;
    min-height: 1.2em;
    opacity: 0;
    transition: var(--transition-quick);
}

.error-msg.visible {
    opacity: 1;
}

/* Rodapé do Card */
.card-footer {
    border-top: 1px solid rgba(43, 29, 14, 0.08);
    padding-top: 20px;
}

.footer-note {
    font-size: 0.85rem;
    color: var(--color-text-muted);
}

/* Estado 2: Agradecimento & Loop Viral */
.success-icon-wrapper {
    margin: 12px auto 24px;
}

.success-checkmark {
    width: 64px;
    height: 64px;
    border-radius: 50%;
    background: var(--color-success-bg);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto;
}

.check-icon {
    width: 24px;
    height: 12px;
    border-left: 3px solid var(--color-success);
    border-bottom: 3px solid var(--color-success);
    transform: rotate(-45deg) translate(3px, -2px);
}

.thankyou-title {
    font-family: var(--font-heading);
    font-size: 1.8rem;
    color: var(--color-primary);
    margin-bottom: 12px;
}

.thankyou-desc {
    font-size: 1rem;
    line-height: 1.6;
    color: var(--color-text-dark);
    margin-bottom: 32px;
}

/* Bloco Viral Loop */
.viral-loop-box {
    background: rgba(255, 255, 255, 0.6);
    border: 1px solid rgba(43, 29, 14, 0.06);
    border-radius: 20px;
    padding: 24px 20px;
    box-shadow: inset 0 2px 4px rgba(0,0,0,0.01);
}

.viral-loop-box h3 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--color-primary);
    margin-bottom: 6px;
}

.viral-loop-box p {
    font-size: 0.85rem;
    color: var(--color-text-muted);
    margin-bottom: 16px;
}

.whatsapp-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    width: 100%;
    padding: 14px 20px;
    background: #25D366;
    color: #ffffff;
    text-decoration: none;
    font-weight: 600;
    border-radius: 14px;
    transition: var(--transition-quick);
    box-shadow: 0 4px 10px rgba(37, 211, 102, 0.2);
    font-size: 0.95rem;
}

.whatsapp-btn:hover {
    background: #20ba59;
    transform: translateY(-2px);
    box-shadow: 0 6px 14px rgba(37, 211, 102, 0.3);
}

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

.icon-whatsapp {
    width: 20px;
    height: 20px;
}