/* Reset e configurações básicas */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html, body {
    height: 100%;
    overflow: hidden;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
}

/* Container principal */
.container {
    min-height: 100vh;
    width: 100%;
    background: white;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
}

/* Gradiente sutil de fundo */
.background-gradient {
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(249, 250, 251, 0.3) 0%, white 50%, rgba(249, 250, 251, 0.3) 100%);
}

/* Conteúdo principal */
.main-content {
    position: relative;
    z-index: 10;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 2rem;
    max-width: 32rem;
    margin: 0 auto;
}

/* Título */
.title {
    font-size: 2.5rem;
    font-weight: bold;
    color: #111827;
    margin-bottom: 3rem;
    line-height: 1.2;
    letter-spacing: -0.025em;
}

.title-highlight {
    background: linear-gradient(135deg, #16a34a, #22c55e);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    color: transparent;
}

/* Container das setas */
.arrows-container {
    margin-bottom: 3rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
    animation: bounce 1s infinite;
}

.arrow {
    width: 2.5rem;
    height: 2.5rem;
    color: #22c55e;
    stroke-width: 3;
}

/* Botão de contribuição */
.contribute-button {
    position: relative;
    padding: 1.25rem 3rem;
    background: #22c55e;
    color: white;
    font-size: 1.25rem;
    font-weight: 600;
    border: none;
    border-radius: 9999px;
    cursor: pointer;
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    transition: all 0.3s ease-out;
    transform: scale(1);
    animation: pulse 2s ease-in-out infinite;
    outline: none;
    margin-bottom: 2rem;
}

.contribute-button:hover {
    background: #16a34a;
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    transform: scale(1.05);
    animation: none;
}

.contribute-button:focus {
    box-shadow: 0 0 0 4px rgba(34, 197, 94, 0.5);
}

.contribute-button:active {
    transform: scale(0.95);
}

/* Efeito de brilho do botão */
.button-glow {
    position: absolute;
    inset: 0;
    background: rgba(34, 197, 94, 0.2);
    border-radius: 9999px;
    filter: blur(1rem);
    opacity: 0;
    transition: all 0.3s ease;
}

.contribute-button:hover .button-glow {
    filter: blur(2rem);
    opacity: 1;
}

/* Texto do botão */
.button-text {
    position: relative;
    z-index: 10;
}

/* Destaque interno do botão */
.button-highlight {
    position: absolute;
    inset: 0.25rem;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 9999px;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.contribute-button:hover .button-highlight {
    opacity: 1;
}

/* Texto de instrução */
.instruction-text {
    color: #6b7280;
    font-size: 0.875rem;
    font-weight: 500;
    letter-spacing: 0.025em;
    opacity: 0.6;
}

/* Elementos decorativos */
.decorative-dot {
    position: absolute;
    background: #dcfce7;
    border-radius: 50%;
    animation: ping 2s cubic-bezier(0, 0, 0.2, 1) infinite;
}

.dot-1 {
    top: 5rem;
    left: 5rem;
    width: 0.5rem;
    height: 0.5rem;
    opacity: 0.3;
}

.dot-2 {
    bottom: 8rem;
    right: 8rem;
    width: 0.25rem;
    height: 0.25rem;
    opacity: 0.4;
    animation-delay: 1s;
}

.dot-3 {
    top: 33.333333%;
    right: 5rem;
    width: 0.375rem;
    height: 0.375rem;
    opacity: 0.2;
    animation-delay: 2s;
}

/* Animações */
@keyframes bounce {
    0%, 100% {
        transform: translateY(0);
        animation-timing-function: cubic-bezier(0.8, 0, 1, 1);
    }
    50% {
        transform: translateY(-25%);
        animation-timing-function: cubic-bezier(0, 0, 0.2, 1);
    }
}

@keyframes pulse {
    0%, 100% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.02);
    }
}

@keyframes ping {
    75%, 100% {
        transform: scale(2);
        opacity: 0;
    }
}

/* Responsividade */
@media (min-width: 768px) {
    .title {
        font-size: 3.75rem;
    }
}

@media (max-width: 640px) {
    .main-content {
        padding: 1rem;
    }
    
    .title {
        font-size: 2rem;
        margin-bottom: 2rem;
    }
    
    .arrows-container {
        margin-bottom: 2rem;
    }
    
    .contribute-button {
        padding: 1rem 2rem;
        font-size: 1.125rem;
    }
}